Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btBoxCollision.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btBoxCollision.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btBoxCollision.h	(revision 2431)
@@ -0,0 +1,647 @@
+#ifndef BT_BOX_COLLISION_H_INCLUDED
+#define BT_BOX_COLLISION_H_INCLUDED
+
+/*! \file gim_box_collision.h
+\author Francisco Len Nßjera
+*/
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "LinearMath/btTransform.h"
+
+
+///Swap numbers
+#define BT_SWAP_NUMBERS(a,b){ \
+    a = a+b; \
+    b = a-b; \
+    a = a-b; \
+}\
+
+
+#define BT_MAX(a,b) (a<b?b:a)
+#define BT_MIN(a,b) (a>b?b:a)
+
+#define BT_GREATER(x, y)	btFabs(x) > (y)
+
+#define BT_MAX3(a,b,c) BT_MAX(a,BT_MAX(b,c))
+#define BT_MIN3(a,b,c) BT_MIN(a,BT_MIN(b,c))
+
+
+
+
+
+
+enum eBT_PLANE_INTERSECTION_TYPE
+{
+	BT_CONST_BACK_PLANE = 0,
+	BT_CONST_COLLIDE_PLANE,
+	BT_CONST_FRONT_PLANE
+};
+
+//SIMD_FORCE_INLINE bool test_cross_edge_box(
+//	const btVector3 & edge,
+//	const btVector3 & absolute_edge,
+//	const btVector3 & pointa,
+//	const btVector3 & pointb, const btVector3 & extend,
+//	int dir_index0,
+//	int dir_index1
+//	int component_index0,
+//	int component_index1)
+//{
+//	// dir coords are -z and y
+//
+//	const btScalar dir0 = -edge[dir_index0];
+//	const btScalar dir1 = edge[dir_index1];
+//	btScalar pmin = pointa[component_index0]*dir0 + pointa[component_index1]*dir1;
+//	btScalar pmax = pointb[component_index0]*dir0 + pointb[component_index1]*dir1;
+//	//find minmax
+//	if(pmin>pmax)
+//	{
+//		BT_SWAP_NUMBERS(pmin,pmax);
+//	}
+//	//find extends
+//	const btScalar rad = extend[component_index0] * absolute_edge[dir_index0] +
+//					extend[component_index1] * absolute_edge[dir_index1];
+//
+//	if(pmin>rad || -rad>pmax) return false;
+//	return true;
+//}
+//
+//SIMD_FORCE_INLINE bool test_cross_edge_box_X_axis(
+//	const btVector3 & edge,
+//	const btVector3 & absolute_edge,
+//	const btVector3 & pointa,
+//	const btVector3 & pointb, btVector3 & extend)
+//{
+//
+//	return test_cross_edge_box(edge,absolute_edge,pointa,pointb,extend,2,1,1,2);
+//}
+//
+//
+//SIMD_FORCE_INLINE bool test_cross_edge_box_Y_axis(
+//	const btVector3 & edge,
+//	const btVector3 & absolute_edge,
+//	const btVector3 & pointa,
+//	const btVector3 & pointb, btVector3 & extend)
+//{
+//
+//	return test_cross_edge_box(edge,absolute_edge,pointa,pointb,extend,0,2,2,0);
+//}
+//
+//SIMD_FORCE_INLINE bool test_cross_edge_box_Z_axis(
+//	const btVector3 & edge,
+//	const btVector3 & absolute_edge,
+//	const btVector3 & pointa,
+//	const btVector3 & pointb, btVector3 & extend)
+//{
+//
+//	return test_cross_edge_box(edge,absolute_edge,pointa,pointb,extend,1,0,0,1);
+//}
+
+
+#define TEST_CROSS_EDGE_BOX_MCR(edge,absolute_edge,pointa,pointb,_extend,i_dir_0,i_dir_1,i_comp_0,i_comp_1)\
+{\
+	const btScalar dir0 = -edge[i_dir_0];\
+	const btScalar dir1 = edge[i_dir_1];\
+	btScalar pmin = pointa[i_comp_0]*dir0 + pointa[i_comp_1]*dir1;\
+	btScalar pmax = pointb[i_comp_0]*dir0 + pointb[i_comp_1]*dir1;\
+	if(pmin>pmax)\
+	{\
+		BT_SWAP_NUMBERS(pmin,pmax); \
+	}\
+	const btScalar abs_dir0 = absolute_edge[i_dir_0];\
+	const btScalar abs_dir1 = absolute_edge[i_dir_1];\
+	const btScalar rad = _extend[i_comp_0] * abs_dir0 + _extend[i_comp_1] * abs_dir1;\
+	if(pmin>rad || -rad>pmax) return false;\
+}\
+
+
+#define TEST_CROSS_EDGE_BOX_X_AXIS_MCR(edge,absolute_edge,pointa,pointb,_extend)\
+{\
+	TEST_CROSS_EDGE_BOX_MCR(edge,absolute_edge,pointa,pointb,_extend,2,1,1,2);\
+}\
+
+#define TEST_CROSS_EDGE_BOX_Y_AXIS_MCR(edge,absolute_edge,pointa,pointb,_extend)\
+{\
+	TEST_CROSS_EDGE_BOX_MCR(edge,absolute_edge,pointa,pointb,_extend,0,2,2,0);\
+}\
+
+#define TEST_CROSS_EDGE_BOX_Z_AXIS_MCR(edge,absolute_edge,pointa,pointb,_extend)\
+{\
+	TEST_CROSS_EDGE_BOX_MCR(edge,absolute_edge,pointa,pointb,_extend,1,0,0,1);\
+}\
+
+
+//! Returns the dot product between a vec3f and the col of a matrix
+SIMD_FORCE_INLINE btScalar bt_mat3_dot_col(
+const btMatrix3x3 & mat, const btVector3 & vec3, int colindex)
+{
+	return vec3[0]*mat[0][colindex] + vec3[1]*mat[1][colindex] + vec3[2]*mat[2][colindex];
+}
+
+
+//!  Class for transforming a model1 to the space of model0
+ATTRIBUTE_ALIGNED16	(class) BT_BOX_BOX_TRANSFORM_CACHE
+{
+public:
+    btVector3  m_T1to0;//!< Transforms translation of model1 to model 0
+	btMatrix3x3 m_R1to0;//!< Transforms Rotation of model1 to model 0, equal  to R0' * R1
+	btMatrix3x3 m_AR;//!< Absolute value of m_R1to0
+
+	SIMD_FORCE_INLINE void calc_absolute_matrix()
+	{
+//		static const btVector3 vepsi(1e-6f,1e-6f,1e-6f);
+//		m_AR[0] = vepsi + m_R1to0[0].absolute();
+//		m_AR[1] = vepsi + m_R1to0[1].absolute();
+//		m_AR[2] = vepsi + m_R1to0[2].absolute();
+
+		int i,j;
+
+        for(i=0;i<3;i++)
+        {
+            for(j=0;j<3;j++ )
+            {
+            	m_AR[i][j] = 1e-6f + btFabs(m_R1to0[i][j]);
+            }
+        }
+
+	}
+
+	BT_BOX_BOX_TRANSFORM_CACHE()
+	{
+	}
+
+
+
+	//! Calc the transformation relative  1 to 0. Inverts matrics by transposing
+	SIMD_FORCE_INLINE void calc_from_homogenic(const btTransform & trans0,const btTransform & trans1)
+	{
+
+		btTransform temp_trans = trans0.inverse();
+		temp_trans = temp_trans * trans1;
+
+		m_T1to0 = temp_trans.getOrigin();
+		m_R1to0 = temp_trans.getBasis();
+
+
+		calc_absolute_matrix();
+	}
+
+	//! Calcs the full invertion of the matrices. Useful for scaling matrices
+	SIMD_FORCE_INLINE void calc_from_full_invert(const btTransform & trans0,const btTransform & trans1)
+	{
+		m_R1to0 = trans0.getBasis().inverse();
+		m_T1to0 = m_R1to0 * (-trans0.getOrigin());
+
+		m_T1to0 += m_R1to0*trans1.getOrigin();
+		m_R1to0 *= trans1.getBasis();
+
+		calc_absolute_matrix();
+	}
+
+	SIMD_FORCE_INLINE btVector3 transform(const btVector3 & point) const
+	{
+		return btVector3(m_R1to0[0].dot(point) + m_T1to0.x(),
+			m_R1to0[1].dot(point) + m_T1to0.y(),
+			m_R1to0[2].dot(point) + m_T1to0.z());
+	}
+};
+
+
+#define BOX_PLANE_EPSILON 0.000001f
+
+//! Axis aligned box
+ATTRIBUTE_ALIGNED16	(class) btAABB
+{
+public:
+	btVector3 m_min;
+	btVector3 m_max;
+
+	btAABB()
+	{}
+
+
+	btAABB(const btVector3 & V1,
+			 const btVector3 & V2,
+			 const btVector3 & V3)
+	{
+		m_min[0] = BT_MIN3(V1[0],V2[0],V3[0]);
+		m_min[1] = BT_MIN3(V1[1],V2[1],V3[1]);
+		m_min[2] = BT_MIN3(V1[2],V2[2],V3[2]);
+
+		m_max[0] = BT_MAX3(V1[0],V2[0],V3[0]);
+		m_max[1] = BT_MAX3(V1[1],V2[1],V3[1]);
+		m_max[2] = BT_MAX3(V1[2],V2[2],V3[2]);
+	}
+
+	btAABB(const btVector3 & V1,
+			 const btVector3 & V2,
+			 const btVector3 & V3,
+			 btScalar margin)
+	{
+		m_min[0] = BT_MIN3(V1[0],V2[0],V3[0]);
+		m_min[1] = BT_MIN3(V1[1],V2[1],V3[1]);
+		m_min[2] = BT_MIN3(V1[2],V2[2],V3[2]);
+
+		m_max[0] = BT_MAX3(V1[0],V2[0],V3[0]);
+		m_max[1] = BT_MAX3(V1[1],V2[1],V3[1]);
+		m_max[2] = BT_MAX3(V1[2],V2[2],V3[2]);
+
+		m_min[0] -= margin;
+		m_min[1] -= margin;
+		m_min[2] -= margin;
+		m_max[0] += margin;
+		m_max[1] += margin;
+		m_max[2] += margin;
+	}
+
+	btAABB(const btAABB &other):
+		m_min(other.m_min),m_max(other.m_max)
+	{
+	}
+
+	btAABB(const btAABB &other,btScalar margin ):
+		m_min(other.m_min),m_max(other.m_max)
+	{
+		m_min[0] -= margin;
+		m_min[1] -= margin;
+		m_min[2] -= margin;
+		m_max[0] += margin;
+		m_max[1] += margin;
+		m_max[2] += margin;
+	}
+
+	SIMD_FORCE_INLINE void invalidate()
+	{
+		m_min[0] = SIMD_INFINITY;
+		m_min[1] = SIMD_INFINITY;
+		m_min[2] = SIMD_INFINITY;
+		m_max[0] = -SIMD_INFINITY;
+		m_max[1] = -SIMD_INFINITY;
+		m_max[2] = -SIMD_INFINITY;
+	}
+
+	SIMD_FORCE_INLINE void increment_margin(btScalar margin)
+	{
+		m_min[0] -= margin;
+		m_min[1] -= margin;
+		m_min[2] -= margin;
+		m_max[0] += margin;
+		m_max[1] += margin;
+		m_max[2] += margin;
+	}
+
+	SIMD_FORCE_INLINE void copy_with_margin(const btAABB &other, btScalar margin)
+	{
+		m_min[0] = other.m_min[0] - margin;
+		m_min[1] = other.m_min[1] - margin;
+		m_min[2] = other.m_min[2] - margin;
+
+		m_max[0] = other.m_max[0] + margin;
+		m_max[1] = other.m_max[1] + margin;
+		m_max[2] = other.m_max[2] + margin;
+	}
+
+	template<typename CLASS_POINT>
+	SIMD_FORCE_INLINE void calc_from_triangle(
+							const CLASS_POINT & V1,
+							const CLASS_POINT & V2,
+							const CLASS_POINT & V3)
+	{
+		m_min[0] = BT_MIN3(V1[0],V2[0],V3[0]);
+		m_min[1] = BT_MIN3(V1[1],V2[1],V3[1]);
+		m_min[2] = BT_MIN3(V1[2],V2[2],V3[2]);
+
+		m_max[0] = BT_MAX3(V1[0],V2[0],V3[0]);
+		m_max[1] = BT_MAX3(V1[1],V2[1],V3[1]);
+		m_max[2] = BT_MAX3(V1[2],V2[2],V3[2]);
+	}
+
+	template<typename CLASS_POINT>
+	SIMD_FORCE_INLINE void calc_from_triangle_margin(
+							const CLASS_POINT & V1,
+							const CLASS_POINT & V2,
+							const CLASS_POINT & V3, btScalar margin)
+	{
+		m_min[0] = BT_MIN3(V1[0],V2[0],V3[0]);
+		m_min[1] = BT_MIN3(V1[1],V2[1],V3[1]);
+		m_min[2] = BT_MIN3(V1[2],V2[2],V3[2]);
+
+		m_max[0] = BT_MAX3(V1[0],V2[0],V3[0]);
+		m_max[1] = BT_MAX3(V1[1],V2[1],V3[1]);
+		m_max[2] = BT_MAX3(V1[2],V2[2],V3[2]);
+
+		m_min[0] -= margin;
+		m_min[1] -= margin;
+		m_min[2] -= margin;
+		m_max[0] += margin;
+		m_max[1] += margin;
+		m_max[2] += margin;
+	}
+
+	//! Apply a transform to an AABB
+	SIMD_FORCE_INLINE void appy_transform(const btTransform & trans)
+	{
+		btVector3 center = (m_max+m_min)*0.5f;
+		btVector3 extends = m_max - center;
+		// Compute new center
+		center = trans(center);
+
+		btVector3 textends(extends.dot(trans.getBasis().getRow(0).absolute()),
+ 				 extends.dot(trans.getBasis().getRow(1).absolute()),
+				 extends.dot(trans.getBasis().getRow(2).absolute()));
+
+		m_min = center - textends;
+		m_max = center + textends;
+	}
+
+
+	//! Apply a transform to an AABB
+	SIMD_FORCE_INLINE void appy_transform_trans_cache(const BT_BOX_BOX_TRANSFORM_CACHE & trans)
+	{
+		btVector3 center = (m_max+m_min)*0.5f;
+		btVector3 extends = m_max - center;
+		// Compute new center
+		center = trans.transform(center);
+
+		btVector3 textends(extends.dot(trans.m_R1to0.getRow(0).absolute()),
+ 				 extends.dot(trans.m_R1to0.getRow(1).absolute()),
+				 extends.dot(trans.m_R1to0.getRow(2).absolute()));
+
+		m_min = center - textends;
+		m_max = center + textends;
+	}
+
+	//! Merges a Box
+	SIMD_FORCE_INLINE void merge(const btAABB & box)
+	{
+		m_min[0] = BT_MIN(m_min[0],box.m_min[0]);
+		m_min[1] = BT_MIN(m_min[1],box.m_min[1]);
+		m_min[2] = BT_MIN(m_min[2],box.m_min[2]);
+
+		m_max[0] = BT_MAX(m_max[0],box.m_max[0]);
+		m_max[1] = BT_MAX(m_max[1],box.m_max[1]);
+		m_max[2] = BT_MAX(m_max[2],box.m_max[2]);
+	}
+
+	//! Merges a point
+	template<typename CLASS_POINT>
+	SIMD_FORCE_INLINE void merge_point(const CLASS_POINT & point)
+	{
+		m_min[0] = BT_MIN(m_min[0],point[0]);
+		m_min[1] = BT_MIN(m_min[1],point[1]);
+		m_min[2] = BT_MIN(m_min[2],point[2]);
+
+		m_max[0] = BT_MAX(m_max[0],point[0]);
+		m_max[1] = BT_MAX(m_max[1],point[1]);
+		m_max[2] = BT_MAX(m_max[2],point[2]);
+	}
+
+	//! Gets the extend and center
+	SIMD_FORCE_INLINE void get_center_extend(btVector3 & center,btVector3 & extend)  const
+	{
+		center = (m_max+m_min)*0.5f;
+		extend = m_max - center;
+	}
+
+	//! Finds the intersecting box between this box and the other.
+	SIMD_FORCE_INLINE void find_intersection(const btAABB & other, btAABB & intersection)  const
+	{
+		intersection.m_min[0] = BT_MAX(other.m_min[0],m_min[0]);
+		intersection.m_min[1] = BT_MAX(other.m_min[1],m_min[1]);
+		intersection.m_min[2] = BT_MAX(other.m_min[2],m_min[2]);
+
+		intersection.m_max[0] = BT_MIN(other.m_max[0],m_max[0]);
+		intersection.m_max[1] = BT_MIN(other.m_max[1],m_max[1]);
+		intersection.m_max[2] = BT_MIN(other.m_max[2],m_max[2]);
+	}
+
+
+	SIMD_FORCE_INLINE bool has_collision(const btAABB & other) const
+	{
+		if(m_min[0] > other.m_max[0] ||
+		   m_max[0] < other.m_min[0] ||
+		   m_min[1] > other.m_max[1] ||
+		   m_max[1] < other.m_min[1] ||
+		   m_min[2] > other.m_max[2] ||
+		   m_max[2] < other.m_min[2])
+		{
+			return false;
+		}
+		return true;
+	}
+
+	/*! \brief Finds the Ray intersection parameter.
+	\param aabb Aligned box
+	\param vorigin A vec3f with the origin of the ray
+	\param vdir A vec3f with the direction of the ray
+	*/
+	SIMD_FORCE_INLINE bool collide_ray(const btVector3 & vorigin,const btVector3 & vdir)  const
+	{
+		btVector3 extents,center;
+		this->get_center_extend(center,extents);;
+
+		btScalar Dx = vorigin[0] - center[0];
+		if(BT_GREATER(Dx, extents[0]) && Dx*vdir[0]>=0.0f)	return false;
+		btScalar Dy = vorigin[1] - center[1];
+		if(BT_GREATER(Dy, extents[1]) && Dy*vdir[1]>=0.0f)	return false;
+		btScalar Dz = vorigin[2] - center[2];
+		if(BT_GREATER(Dz, extents[2]) && Dz*vdir[2]>=0.0f)	return false;
+
+
+		btScalar f = vdir[1] * Dz - vdir[2] * Dy;
+		if(btFabs(f) > extents[1]*btFabs(vdir[2]) + extents[2]*btFabs(vdir[1])) return false;
+		f = vdir[2] * Dx - vdir[0] * Dz;
+		if(btFabs(f) > extents[0]*btFabs(vdir[2]) + extents[2]*btFabs(vdir[0]))return false;
+		f = vdir[0] * Dy - vdir[1] * Dx;
+		if(btFabs(f) > extents[0]*btFabs(vdir[1]) + extents[1]*btFabs(vdir[0]))return false;
+		return true;
+	}
+
+
+	SIMD_FORCE_INLINE void projection_interval(const btVector3 & direction, btScalar &vmin, btScalar &vmax) const
+	{
+		btVector3 center = (m_max+m_min)*0.5f;
+		btVector3 extend = m_max-center;
+
+		btScalar _fOrigin =  direction.dot(center);
+		btScalar _fMaximumExtent = extend.dot(direction.absolute());
+		vmin = _fOrigin - _fMaximumExtent;
+		vmax = _fOrigin + _fMaximumExtent;
+	}
+
+	SIMD_FORCE_INLINE eBT_PLANE_INTERSECTION_TYPE plane_classify(const btVector4 &plane) const
+	{
+		btScalar _fmin,_fmax;
+		this->projection_interval(plane,_fmin,_fmax);
+
+		if(plane[3] > _fmax + BOX_PLANE_EPSILON)
+		{
+			return BT_CONST_BACK_PLANE; // 0
+		}
+
+		if(plane[3]+BOX_PLANE_EPSILON >=_fmin)
+		{
+			return BT_CONST_COLLIDE_PLANE; //1
+		}
+		return BT_CONST_FRONT_PLANE;//2
+	}
+
+	SIMD_FORCE_INLINE bool overlapping_trans_conservative(const btAABB & box, btTransform & trans1_to_0) const
+	{
+		btAABB tbox = box;
+		tbox.appy_transform(trans1_to_0);
+		return has_collision(tbox);
+	}
+
+	SIMD_FORCE_INLINE bool overlapping_trans_conservative2(const btAABB & box,
+		const BT_BOX_BOX_TRANSFORM_CACHE & trans1_to_0) const
+	{
+		btAABB tbox = box;
+		tbox.appy_transform_trans_cache(trans1_to_0);
+		return has_collision(tbox);
+	}
+
+	//! transcache is the transformation cache from box to this AABB
+	SIMD_FORCE_INLINE bool overlapping_trans_cache(
+		const btAABB & box,const BT_BOX_BOX_TRANSFORM_CACHE & transcache, bool fulltest) const
+	{
+
+		//Taken from OPCODE
+		btVector3 ea,eb;//extends
+		btVector3 ca,cb;//extends
+		get_center_extend(ca,ea);
+		box.get_center_extend(cb,eb);
+
+
+		btVector3 T;
+		btScalar t,t2;
+		int i;
+
+		// Class I : A's basis vectors
+		for(i=0;i<3;i++)
+		{
+			T[i] =  transcache.m_R1to0[i].dot(cb) + transcache.m_T1to0[i] - ca[i];
+			t = transcache.m_AR[i].dot(eb) + ea[i];
+			if(BT_GREATER(T[i], t))	return false;
+		}
+		// Class II : B's basis vectors
+		for(i=0;i<3;i++)
+		{
+			t = bt_mat3_dot_col(transcache.m_R1to0,T,i);
+			t2 = bt_mat3_dot_col(transcache.m_AR,ea,i) + eb[i];
+			if(BT_GREATER(t,t2))	return false;
+		}
+		// Class III : 9 cross products
+		if(fulltest)
+		{
+			int j,m,n,o,p,q,r;
+			for(i=0;i<3;i++)
+			{
+				m = (i+1)%3;
+				n = (i+2)%3;
+				o = i==0?1:0;
+				p = i==2?1:2;
+				for(j=0;j<3;j++)
+				{
+					q = j==2?1:2;
+					r = j==0?1:0;
+					t = T[n]*transcache.m_R1to0[m][j] - T[m]*transcache.m_R1to0[n][j];
+					t2 = ea[o]*transcache.m_AR[p][j] + ea[p]*transcache.m_AR[o][j] +
+						eb[r]*transcache.m_AR[i][q] + eb[q]*transcache.m_AR[i][r];
+					if(BT_GREATER(t,t2))	return false;
+				}
+			}
+		}
+		return true;
+	}
+
+	//! Simple test for planes.
+	SIMD_FORCE_INLINE bool collide_plane(
+		const btVector4 & plane) const
+	{
+		eBT_PLANE_INTERSECTION_TYPE classify = plane_classify(plane);
+		return (classify == BT_CONST_COLLIDE_PLANE);
+	}
+
+	//! test for a triangle, with edges
+	SIMD_FORCE_INLINE bool collide_triangle_exact(
+		const btVector3 & p1,
+		const btVector3 & p2,
+		const btVector3 & p3,
+		const btVector4 & triangle_plane) const
+	{
+		if(!collide_plane(triangle_plane)) return false;
+
+		btVector3 center,extends;
+		this->get_center_extend(center,extends);
+
+		const btVector3 v1(p1 - center);
+		const btVector3 v2(p2 - center);
+		const btVector3 v3(p3 - center);
+
+		//First axis
+		btVector3 diff(v2 - v1);
+		btVector3 abs_diff = diff.absolute();
+		//Test With X axis
+		TEST_CROSS_EDGE_BOX_X_AXIS_MCR(diff,abs_diff,v1,v3,extends);
+		//Test With Y axis
+		TEST_CROSS_EDGE_BOX_Y_AXIS_MCR(diff,abs_diff,v1,v3,extends);
+		//Test With Z axis
+		TEST_CROSS_EDGE_BOX_Z_AXIS_MCR(diff,abs_diff,v1,v3,extends);
+
+
+		diff = v3 - v2;
+		abs_diff = diff.absolute();
+		//Test With X axis
+		TEST_CROSS_EDGE_BOX_X_AXIS_MCR(diff,abs_diff,v2,v1,extends);
+		//Test With Y axis
+		TEST_CROSS_EDGE_BOX_Y_AXIS_MCR(diff,abs_diff,v2,v1,extends);
+		//Test With Z axis
+		TEST_CROSS_EDGE_BOX_Z_AXIS_MCR(diff,abs_diff,v2,v1,extends);
+
+		diff = v1 - v3;
+		abs_diff = diff.absolute();
+		//Test With X axis
+		TEST_CROSS_EDGE_BOX_X_AXIS_MCR(diff,abs_diff,v3,v2,extends);
+		//Test With Y axis
+		TEST_CROSS_EDGE_BOX_Y_AXIS_MCR(diff,abs_diff,v3,v2,extends);
+		//Test With Z axis
+		TEST_CROSS_EDGE_BOX_Z_AXIS_MCR(diff,abs_diff,v3,v2,extends);
+
+		return true;
+	}
+};
+
+
+//! Compairison of transformation objects
+SIMD_FORCE_INLINE bool btCompareTransformsEqual(const btTransform & t1,const btTransform & t2)
+{
+	if(!(t1.getOrigin() == t2.getOrigin()) ) return false;
+
+	if(!(t1.getBasis().getRow(0) == t2.getBasis().getRow(0)) ) return false;
+	if(!(t1.getBasis().getRow(1) == t2.getBasis().getRow(1)) ) return false;
+	if(!(t1.getBasis().getRow(2) == t2.getBasis().getRow(2)) ) return false;
+	return true;
+}
+
+
+
+#endif // GIM_BOX_COLLISION_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btClipPolygon.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btClipPolygon.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btClipPolygon.h	(revision 2431)
@@ -0,0 +1,182 @@
+#ifndef BT_CLIP_POLYGON_H_INCLUDED
+#define BT_CLIP_POLYGON_H_INCLUDED
+
+/*! \file btClipPolygon.h
+\author Francisco Len Nßjera
+*/
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "LinearMath/btTransform.h"
+#include "LinearMath/btGeometryUtil.h"
+
+
+SIMD_FORCE_INLINE btScalar bt_distance_point_plane(const btVector4 & plane,const btVector3 &point)
+{
+	return point.dot(plane) - plane[3];
+}
+
+/*! Vector blending
+Takes two vectors a, b, blends them together*/
+SIMD_FORCE_INLINE void bt_vec_blend(btVector3 &vr, const btVector3 &va,const btVector3 &vb, btScalar blend_factor)
+{
+	vr = (1-blend_factor)*va + blend_factor*vb;
+}
+
+//! This function calcs the distance from a 3D plane
+SIMD_FORCE_INLINE void bt_plane_clip_polygon_collect(
+						const btVector3 & point0,
+						const btVector3 & point1,
+						btScalar dist0,
+						btScalar dist1,
+						btVector3 * clipped,
+						int & clipped_count)
+{
+	bool _prevclassif = (dist0>SIMD_EPSILON);
+	bool _classif = (dist1>SIMD_EPSILON);
+	if(_classif!=_prevclassif)
+	{
+		btScalar blendfactor = -dist0/(dist1-dist0);
+		bt_vec_blend(clipped[clipped_count],point0,point1,blendfactor);
+		clipped_count++;
+	}
+	if(!_classif)
+	{
+		clipped[clipped_count] = point1;
+		clipped_count++;
+	}
+}
+
+
+//! Clips a polygon by a plane
+/*!
+*\return The count of the clipped counts
+*/
+SIMD_FORCE_INLINE int bt_plane_clip_polygon(
+						const btVector4 & plane,
+						const btVector3 * polygon_points,
+						int polygon_point_count,
+						btVector3 * clipped)
+{
+    int clipped_count = 0;
+
+
+    //clip first point
+	btScalar firstdist = bt_distance_point_plane(plane,polygon_points[0]);;
+	if(!(firstdist>SIMD_EPSILON))
+	{
+		clipped[clipped_count] = polygon_points[0];
+		clipped_count++;
+	}
+
+	btScalar olddist = firstdist;
+	for(int i=1;i<polygon_point_count;i++)
+	{
+		btScalar dist = bt_distance_point_plane(plane,polygon_points[i]);
+
+		bt_plane_clip_polygon_collect(
+						polygon_points[i-1],polygon_points[i],
+						olddist,
+						dist,
+						clipped,
+						clipped_count);
+
+
+		olddist = dist;
+	}
+
+	//RETURN TO FIRST  point
+
+	bt_plane_clip_polygon_collect(
+					polygon_points[polygon_point_count-1],polygon_points[0],
+					olddist,
+					firstdist,
+					clipped,
+					clipped_count);
+
+	return clipped_count;
+}
+
+//! Clips a polygon by a plane
+/*!
+*\param clipped must be an array of 16 points.
+*\return The count of the clipped counts
+*/
+SIMD_FORCE_INLINE int bt_plane_clip_triangle(
+						const btVector4 & plane,
+						const btVector3 & point0,
+						const btVector3 & point1,
+						const btVector3& point2,
+						btVector3 * clipped // an allocated array of 16 points at least
+						)
+{
+    int clipped_count = 0;
+
+    //clip first point0
+	btScalar firstdist = bt_distance_point_plane(plane,point0);;
+	if(!(firstdist>SIMD_EPSILON))
+	{
+		clipped[clipped_count] = point0;
+		clipped_count++;
+	}
+
+	// point 1
+	btScalar olddist = firstdist;
+	btScalar dist = bt_distance_point_plane(plane,point1);
+
+	bt_plane_clip_polygon_collect(
+					point0,point1,
+					olddist,
+					dist,
+					clipped,
+					clipped_count);
+
+	olddist = dist;
+
+
+	// point 2
+	dist = bt_distance_point_plane(plane,point2);
+
+	bt_plane_clip_polygon_collect(
+					point1,point2,
+					olddist,
+					dist,
+					clipped,
+					clipped_count);
+	olddist = dist;
+
+
+
+	//RETURN TO FIRST  point0
+	bt_plane_clip_polygon_collect(
+					point2,point0,
+					olddist,
+					firstdist,
+					clipped,
+					clipped_count);
+
+	return clipped_count;
+}
+
+
+
+
+
+#endif // GIM_TRI_COLLISION_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btContactProcessing.cpp
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btContactProcessing.cpp	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btContactProcessing.cpp	(revision 2431)
@@ -0,0 +1,181 @@
+
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+#include "btContactProcessing.h"
+
+#define MAX_COINCIDENT 8
+
+struct CONTACT_KEY_TOKEN
+{
+	unsigned int m_key;
+	int m_value;
+	CONTACT_KEY_TOKEN()
+    {
+    }
+
+    CONTACT_KEY_TOKEN(unsigned int key,int token)
+    {
+    	m_key = key;
+    	m_value =  token;
+    }
+
+    CONTACT_KEY_TOKEN(const CONTACT_KEY_TOKEN& rtoken)
+    {
+    	m_key = rtoken.m_key;
+    	m_value = rtoken.m_value;
+    }
+
+    inline bool operator <(const CONTACT_KEY_TOKEN& other) const
+	{
+		return (m_key < other.m_key);
+	}
+
+	inline bool operator >(const CONTACT_KEY_TOKEN& other) const
+	{
+		return (m_key > other.m_key);
+	}
+
+};
+
+class CONTACT_KEY_TOKEN_COMP
+{
+	public:
+
+		bool operator() ( const CONTACT_KEY_TOKEN& a, const CONTACT_KEY_TOKEN& b )
+		{
+			return ( a < b );
+		}
+};
+
+
+void btContactArray::merge_contacts(
+	const btContactArray & contacts, bool normal_contact_average)
+{
+	clear();
+
+	int i;
+	if(contacts.size()==0) return;
+
+
+	if(contacts.size()==1)
+	{
+		push_back(contacts[0]);
+		return;
+	}
+
+	btAlignedObjectArray<CONTACT_KEY_TOKEN> keycontacts;
+
+	keycontacts.reserve(contacts.size());
+
+	//fill key contacts
+
+	for ( i = 0;i<contacts.size() ;i++ )
+	{
+		keycontacts.push_back(CONTACT_KEY_TOKEN(contacts[i].calc_key_contact(),i));
+	}
+
+	//sort keys
+	keycontacts.quickSort(CONTACT_KEY_TOKEN_COMP());
+
+	// Merge contacts
+	int coincident_count=0;
+	btVector3 coincident_normals[MAX_COINCIDENT];
+
+	unsigned int last_key = keycontacts[0].m_key;
+	unsigned int key = 0;
+
+	push_back(contacts[keycontacts[0].m_value]);
+
+	GIM_CONTACT * pcontact = &(*this)[0];
+
+	for( i=1;i<keycontacts.size();i++)
+	{
+	    key = keycontacts[i].m_key;
+		const GIM_CONTACT * scontact = &contacts[keycontacts[i].m_value];
+
+		if(last_key ==  key)//same points
+		{
+			//merge contact
+			if(pcontact->m_depth - CONTACT_DIFF_EPSILON > scontact->m_depth)//)
+			{
+				*pcontact = *scontact;
+                coincident_count = 0;
+			}
+			else if(normal_contact_average)
+			{
+				if(btFabs(pcontact->m_depth - scontact->m_depth)<CONTACT_DIFF_EPSILON)
+                {
+                    if(coincident_count<MAX_COINCIDENT)
+                    {
+                    	coincident_normals[coincident_count] = scontact->m_normal;
+                        coincident_count++;
+                    }
+                }
+			}
+		}
+		else
+		{//add new contact
+
+		    if(normal_contact_average && coincident_count>0)
+		    {
+		    	pcontact->interpolate_normals(coincident_normals,coincident_count);
+		        coincident_count = 0;
+		    }
+
+		    push_back(*scontact);
+		    pcontact = &(*this)[this->size()-1];
+        }
+		last_key = key;
+	}
+}
+
+void btContactArray::merge_contacts_unique(const btContactArray & contacts)
+{
+	clear();
+
+	if(contacts.size()==0) return;
+
+	if(contacts.size()==1)
+	{
+		push_back(contacts[0]);
+		return;
+	}
+
+	GIM_CONTACT average_contact = contacts[0];
+
+	for (int i=1;i<contacts.size() ;i++ )
+	{
+		average_contact.m_point += contacts[i].m_point;
+		average_contact.m_normal += contacts[i].m_normal * contacts[i].m_depth;
+	}
+
+	//divide
+	btScalar divide_average = 1.0f/((btScalar)contacts.size());
+
+	average_contact.m_point *= divide_average;
+
+	average_contact.m_normal *= divide_average;
+
+	average_contact.m_depth = average_contact.m_normal.length();
+
+	average_contact.m_normal /= average_contact.m_depth;
+
+}
+
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btContactProcessing.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btContactProcessing.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btContactProcessing.h	(revision 2431)
@@ -0,0 +1,145 @@
+#ifndef BT_CONTACT_H_INCLUDED
+#define BT_CONTACT_H_INCLUDED
+
+/*! \file gim_contact.h
+\author Francisco Len Nßjera
+*/
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "LinearMath/btTransform.h"
+#include "LinearMath/btAlignedObjectArray.h"
+#include "btTriangleShapeEx.h"
+
+
+
+/**
+Configuration var for applying interpolation of  contact normals
+*/
+#define NORMAL_CONTACT_AVERAGE 1
+
+#define CONTACT_DIFF_EPSILON 0.00001f
+
+///The GIM_CONTACT is an internal GIMPACT structure, similar to btManifoldPoint.
+///@todo: remove and replace GIM_CONTACT by btManifoldPoint.
+class GIM_CONTACT
+{
+public:
+    btVector3 m_point;
+    btVector3 m_normal;
+    btScalar m_depth;//Positive value indicates interpenetration
+    btScalar m_distance;//Padding not for use
+    int m_feature1;//Face number
+    int m_feature2;//Face number
+public:
+    GIM_CONTACT()
+    {
+    }
+
+    GIM_CONTACT(const GIM_CONTACT & contact):
+				m_point(contact.m_point),
+				m_normal(contact.m_normal),
+				m_depth(contact.m_depth),
+				m_feature1(contact.m_feature1),
+				m_feature2(contact.m_feature2)
+    {
+    }
+
+    GIM_CONTACT(const btVector3 &point,const btVector3 & normal,
+    	 			btScalar depth, int feature1, int feature2):
+				m_point(point),
+				m_normal(normal),
+				m_depth(depth),
+				m_feature1(feature1),
+				m_feature2(feature2)
+    {
+    }
+
+	//! Calcs key for coord classification
+    SIMD_FORCE_INLINE unsigned int calc_key_contact() const
+    {
+    	int _coords[] = {
+    		(int)(m_point[0]*1000.0f+1.0f),
+    		(int)(m_point[1]*1333.0f),
+    		(int)(m_point[2]*2133.0f+3.0f)};
+		unsigned int _hash=0;
+		unsigned int *_uitmp = (unsigned int *)(&_coords[0]);
+		_hash = *_uitmp;
+		_uitmp++;
+		_hash += (*_uitmp)<<4;
+		_uitmp++;
+		_hash += (*_uitmp)<<8;
+		return _hash;
+    }
+
+    SIMD_FORCE_INLINE void interpolate_normals( btVector3 * normals,int normal_count)
+    {
+    	btVector3 vec_sum(m_normal);
+		for(int i=0;i<normal_count;i++)
+		{
+			vec_sum += normals[i];
+		}
+
+		btScalar vec_sum_len = vec_sum.length2();
+		if(vec_sum_len <CONTACT_DIFF_EPSILON) return;
+
+		//GIM_INV_SQRT(vec_sum_len,vec_sum_len); // 1/sqrt(vec_sum_len)
+
+		m_normal = vec_sum/btSqrt(vec_sum_len);
+    }
+
+};
+
+
+class btContactArray:public btAlignedObjectArray<GIM_CONTACT>
+{
+public:
+	btContactArray()
+	{
+		reserve(64);
+	}
+
+	SIMD_FORCE_INLINE void push_contact(
+		const btVector3 &point,const btVector3 & normal,
+		btScalar depth, int feature1, int feature2)
+	{
+		push_back( GIM_CONTACT(point,normal,depth,feature1,feature2) );
+	}
+
+	SIMD_FORCE_INLINE void push_triangle_contacts(
+		const GIM_TRIANGLE_CONTACT & tricontact,
+		int feature1,int feature2)
+	{
+		for(int i = 0;i<tricontact.m_point_count ;i++ )
+		{
+			push_contact(
+				tricontact.m_points[i],
+				tricontact.m_separating_normal,
+				tricontact.m_penetration_depth,feature1,feature2);
+		}
+	}
+
+	void merge_contacts(const btContactArray & contacts, bool normal_contact_average = true);
+
+	void merge_contacts_unique(const btContactArray & contacts);
+};
+
+
+#endif // GIM_CONTACT_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactBvh.cpp
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactBvh.cpp	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactBvh.cpp	(revision 2431)
@@ -0,0 +1,499 @@
+/*! \file gim_box_set.h
+\author Francisco Len Nßjera
+*/
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+#include "btGImpactBvh.h"
+#include "LinearMath/btQuickprof.h"
+
+#ifdef TRI_COLLISION_PROFILING
+
+btClock g_tree_clock;
+
+float g_accum_tree_collision_time = 0;
+int g_count_traversing = 0;
+
+
+void bt_begin_gim02_tree_time()
+{
+	g_tree_clock.reset();
+}
+
+void bt_end_gim02_tree_time()
+{
+	g_accum_tree_collision_time += g_tree_clock.getTimeMicroseconds();
+	g_count_traversing++;
+}
+
+//! Gets the average time in miliseconds of tree collisions
+float btGImpactBvh::getAverageTreeCollisionTime()
+{
+	if(g_count_traversing == 0) return 0;
+
+	float avgtime = g_accum_tree_collision_time;
+	avgtime /= (float)g_count_traversing;
+
+	g_accum_tree_collision_time = 0;
+	g_count_traversing = 0;
+	return avgtime;
+
+//	float avgtime = g_count_traversing;
+//	g_count_traversing = 0;
+//	return avgtime;
+
+}
+
+#endif //TRI_COLLISION_PROFILING
+
+/////////////////////// btBvhTree /////////////////////////////////
+
+int btBvhTree::_calc_splitting_axis(
+	GIM_BVH_DATA_ARRAY & primitive_boxes, int startIndex,  int endIndex)
+{
+
+	int i;
+
+	btVector3 means(btScalar(0.),btScalar(0.),btScalar(0.));
+	btVector3 variance(btScalar(0.),btScalar(0.),btScalar(0.));
+	int numIndices = endIndex-startIndex;
+
+	for (i=startIndex;i<endIndex;i++)
+	{
+		btVector3 center = btScalar(0.5)*(primitive_boxes[i].m_bound.m_max +
+					 primitive_boxes[i].m_bound.m_min);
+		means+=center;
+	}
+	means *= (btScalar(1.)/(btScalar)numIndices);
+
+	for (i=startIndex;i<endIndex;i++)
+	{
+		btVector3 center = btScalar(0.5)*(primitive_boxes[i].m_bound.m_max +
+					 primitive_boxes[i].m_bound.m_min);
+		btVector3 diff2 = center-means;
+		diff2 = diff2 * diff2;
+		variance += diff2;
+	}
+	variance *= (btScalar(1.)/	((btScalar)numIndices-1)	);
+
+	return variance.maxAxis();
+}
+
+
+int btBvhTree::_sort_and_calc_splitting_index(
+	GIM_BVH_DATA_ARRAY & primitive_boxes, int startIndex,
+	int endIndex, int splitAxis)
+{
+	int i;
+	int splitIndex =startIndex;
+	int numIndices = endIndex - startIndex;
+
+	// average of centers
+	btScalar splitValue = 0.0f;
+
+	btVector3 means(btScalar(0.),btScalar(0.),btScalar(0.));
+	for (i=startIndex;i<endIndex;i++)
+	{
+		btVector3 center = btScalar(0.5)*(primitive_boxes[i].m_bound.m_max +
+					 primitive_boxes[i].m_bound.m_min);
+		means+=center;
+	}
+	means *= (btScalar(1.)/(btScalar)numIndices);
+
+	splitValue = means[splitAxis];
+
+
+	//sort leafNodes so all values larger then splitValue comes first, and smaller values start from 'splitIndex'.
+	for (i=startIndex;i<endIndex;i++)
+	{
+		btVector3 center = btScalar(0.5)*(primitive_boxes[i].m_bound.m_max +
+					 primitive_boxes[i].m_bound.m_min);
+		if (center[splitAxis] > splitValue)
+		{
+			//swap
+			primitive_boxes.swap(i,splitIndex);
+			//swapLeafNodes(i,splitIndex);
+			splitIndex++;
+		}
+	}
+
+	//if the splitIndex causes unbalanced trees, fix this by using the center in between startIndex and endIndex
+	//otherwise the tree-building might fail due to stack-overflows in certain cases.
+	//unbalanced1 is unsafe: it can cause stack overflows
+	//bool unbalanced1 = ((splitIndex==startIndex) || (splitIndex == (endIndex-1)));
+
+	//unbalanced2 should work too: always use center (perfect balanced trees)
+	//bool unbalanced2 = true;
+
+	//this should be safe too:
+	int rangeBalancedIndices = numIndices/3;
+	bool unbalanced = ((splitIndex<=(startIndex+rangeBalancedIndices)) || (splitIndex >=(endIndex-1-rangeBalancedIndices)));
+
+	if (unbalanced)
+	{
+		splitIndex = startIndex+ (numIndices>>1);
+	}
+
+	bool unbal = (splitIndex==startIndex) || (splitIndex == (endIndex));
+	btAssert(!unbal);
+
+	return splitIndex;
+
+}
+
+
+void btBvhTree::_build_sub_tree(GIM_BVH_DATA_ARRAY & primitive_boxes, int startIndex,  int endIndex)
+{
+	int curIndex = m_num_nodes;
+	m_num_nodes++;
+
+	btAssert((endIndex-startIndex)>0);
+
+	if ((endIndex-startIndex)==1)
+	{
+	    //We have a leaf node
+	    setNodeBound(curIndex,primitive_boxes[startIndex].m_bound);
+		m_node_array[curIndex].setDataIndex(primitive_boxes[startIndex].m_data);
+
+		return;
+	}
+	//calculate Best Splitting Axis and where to split it. Sort the incoming 'leafNodes' array within range 'startIndex/endIndex'.
+
+	//split axis
+	int splitIndex = _calc_splitting_axis(primitive_boxes,startIndex,endIndex);
+
+	splitIndex = _sort_and_calc_splitting_index(
+			primitive_boxes,startIndex,endIndex,
+			splitIndex//split axis
+			);
+
+
+	//calc this node bounding box
+
+	btAABB node_bound;
+	node_bound.invalidate();
+
+	for (int i=startIndex;i<endIndex;i++)
+	{
+		node_bound.merge(primitive_boxes[i].m_bound);
+	}
+
+	setNodeBound(curIndex,node_bound);
+
+
+	//build left branch
+	_build_sub_tree(primitive_boxes, startIndex, splitIndex );
+
+
+	//build right branch
+	 _build_sub_tree(primitive_boxes, splitIndex ,endIndex);
+
+	m_node_array[curIndex].setEscapeIndex(m_num_nodes - curIndex);
+
+
+}
+
+//! stackless build tree
+void btBvhTree::build_tree(
+	GIM_BVH_DATA_ARRAY & primitive_boxes)
+{
+	// initialize node count to 0
+	m_num_nodes = 0;
+	// allocate nodes
+	m_node_array.resize(primitive_boxes.size()*2);
+
+	_build_sub_tree(primitive_boxes, 0, primitive_boxes.size());
+}
+
+////////////////////////////////////class btGImpactBvh
+
+void btGImpactBvh::refit()
+{
+	int nodecount = getNodeCount();
+	while(nodecount--)
+	{
+		if(isLeafNode(nodecount))
+		{
+			btAABB leafbox;
+			m_primitive_manager->get_primitive_box(getNodeData(nodecount),leafbox);
+			setNodeBound(nodecount,leafbox);
+		}
+		else
+		{
+			//const GIM_BVH_TREE_NODE * nodepointer = get_node_pointer(nodecount);
+			//get left bound
+			btAABB bound;
+			bound.invalidate();
+
+			btAABB temp_box;
+
+			int child_node = getLeftNode(nodecount);
+			if(child_node)
+			{
+				getNodeBound(child_node,temp_box);
+				bound.merge(temp_box);
+			}
+
+			child_node = getRightNode(nodecount);
+			if(child_node)
+			{
+				getNodeBound(child_node,temp_box);
+				bound.merge(temp_box);
+			}
+
+			setNodeBound(nodecount,bound);
+		}
+	}
+}
+
+//! this rebuild the entire set
+void btGImpactBvh::buildSet()
+{
+	//obtain primitive boxes
+	GIM_BVH_DATA_ARRAY primitive_boxes;
+	primitive_boxes.resize(m_primitive_manager->get_primitive_count());
+
+	for (int i = 0;i<primitive_boxes.size() ;i++ )
+	{
+		 m_primitive_manager->get_primitive_box(i,primitive_boxes[i].m_bound);
+		 primitive_boxes[i].m_data = i;
+	}
+
+	m_box_tree.build_tree(primitive_boxes);
+}
+
+//! returns the indices of the primitives in the m_primitive_manager
+bool btGImpactBvh::boxQuery(const btAABB & box, btAlignedObjectArray<int> & collided_results) const
+{
+	int curIndex = 0;
+	int numNodes = getNodeCount();
+
+	while (curIndex < numNodes)
+	{
+		btAABB bound;
+		getNodeBound(curIndex,bound);
+
+		//catch bugs in tree data
+
+		bool aabbOverlap = bound.has_collision(box);
+		bool isleafnode = isLeafNode(curIndex);
+
+		if (isleafnode && aabbOverlap)
+		{
+			collided_results.push_back(getNodeData(curIndex));
+		}
+
+		if (aabbOverlap || isleafnode)
+		{
+			//next subnode
+			curIndex++;
+		}
+		else
+		{
+			//skip node
+			curIndex+= getEscapeNodeIndex(curIndex);
+		}
+	}
+	if(collided_results.size()>0) return true;
+	return false;
+}
+
+
+
+//! returns the indices of the primitives in the m_primitive_manager
+bool btGImpactBvh::rayQuery(
+	const btVector3 & ray_dir,const btVector3 & ray_origin ,
+	btAlignedObjectArray<int> & collided_results) const
+{
+	int curIndex = 0;
+	int numNodes = getNodeCount();
+
+	while (curIndex < numNodes)
+	{
+		btAABB bound;
+		getNodeBound(curIndex,bound);
+
+		//catch bugs in tree data
+
+		bool aabbOverlap = bound.collide_ray(ray_origin,ray_dir);
+		bool isleafnode = isLeafNode(curIndex);
+
+		if (isleafnode && aabbOverlap)
+		{
+			collided_results.push_back(getNodeData( curIndex));
+		}
+
+		if (aabbOverlap || isleafnode)
+		{
+			//next subnode
+			curIndex++;
+		}
+		else
+		{
+			//skip node
+			curIndex+= getEscapeNodeIndex(curIndex);
+		}
+	}
+	if(collided_results.size()>0) return true;
+	return false;
+}
+
+
+SIMD_FORCE_INLINE bool _node_collision(
+	btGImpactBvh * boxset0, btGImpactBvh * boxset1,
+	const BT_BOX_BOX_TRANSFORM_CACHE & trans_cache_1to0,
+	int node0 ,int node1, bool complete_primitive_tests)
+{
+	btAABB box0;
+	boxset0->getNodeBound(node0,box0);
+	btAABB box1;
+	boxset1->getNodeBound(node1,box1);
+
+	return box0.overlapping_trans_cache(box1,trans_cache_1to0,complete_primitive_tests );
+//	box1.appy_transform_trans_cache(trans_cache_1to0);
+//	return box0.has_collision(box1);
+
+}
+
+
+//stackless recursive collision routine
+static void _find_collision_pairs_recursive(
+	btGImpactBvh * boxset0, btGImpactBvh * boxset1,
+	btPairSet * collision_pairs,
+	const BT_BOX_BOX_TRANSFORM_CACHE & trans_cache_1to0,
+	int node0, int node1, bool complete_primitive_tests)
+{
+
+
+
+	if( _node_collision(
+		boxset0,boxset1,trans_cache_1to0,
+		node0,node1,complete_primitive_tests) ==false) return;//avoid colliding internal nodes
+
+	if(boxset0->isLeafNode(node0))
+	{
+		if(boxset1->isLeafNode(node1))
+		{
+			// collision result
+			collision_pairs->push_pair(
+				boxset0->getNodeData(node0),boxset1->getNodeData(node1));
+			return;
+		}
+		else
+		{
+
+			//collide left recursive
+
+			_find_collision_pairs_recursive(
+								boxset0,boxset1,
+								collision_pairs,trans_cache_1to0,
+								node0,boxset1->getLeftNode(node1),false);
+
+			//collide right recursive
+			_find_collision_pairs_recursive(
+								boxset0,boxset1,
+								collision_pairs,trans_cache_1to0,
+								node0,boxset1->getRightNode(node1),false);
+
+
+		}
+	}
+	else
+	{
+		if(boxset1->isLeafNode(node1))
+		{
+
+			//collide left recursive
+			_find_collision_pairs_recursive(
+								boxset0,boxset1,
+								collision_pairs,trans_cache_1to0,
+								boxset0->getLeftNode(node0),node1,false);
+
+
+			//collide right recursive
+
+			_find_collision_pairs_recursive(
+								boxset0,boxset1,
+								collision_pairs,trans_cache_1to0,
+								boxset0->getRightNode(node0),node1,false);
+
+
+		}
+		else
+		{
+			//collide left0 left1
+
+
+
+			_find_collision_pairs_recursive(
+				boxset0,boxset1,
+				collision_pairs,trans_cache_1to0,
+				boxset0->getLeftNode(node0),boxset1->getLeftNode(node1),false);
+
+			//collide left0 right1
+
+			_find_collision_pairs_recursive(
+				boxset0,boxset1,
+				collision_pairs,trans_cache_1to0,
+				boxset0->getLeftNode(node0),boxset1->getRightNode(node1),false);
+
+
+			//collide right0 left1
+
+			_find_collision_pairs_recursive(
+				boxset0,boxset1,
+				collision_pairs,trans_cache_1to0,
+				boxset0->getRightNode(node0),boxset1->getLeftNode(node1),false);
+
+			//collide right0 right1
+
+			_find_collision_pairs_recursive(
+				boxset0,boxset1,
+				collision_pairs,trans_cache_1to0,
+				boxset0->getRightNode(node0),boxset1->getRightNode(node1),false);
+
+		}// else if node1 is not a leaf
+	}// else if node0 is not a leaf
+}
+
+
+void btGImpactBvh::find_collision(btGImpactBvh * boxset0, const btTransform & trans0,
+		btGImpactBvh * boxset1, const btTransform & trans1,
+		btPairSet & collision_pairs)
+{
+
+	if(boxset0->getNodeCount()==0 || boxset1->getNodeCount()==0 ) return;
+
+	BT_BOX_BOX_TRANSFORM_CACHE trans_cache_1to0;
+
+	trans_cache_1to0.calc_from_homogenic(trans0,trans1);
+
+#ifdef TRI_COLLISION_PROFILING
+	bt_begin_gim02_tree_time();
+#endif //TRI_COLLISION_PROFILING
+
+	_find_collision_pairs_recursive(
+		boxset0,boxset1,
+		&collision_pairs,trans_cache_1to0,0,0,true);
+#ifdef TRI_COLLISION_PROFILING
+	bt_end_gim02_tree_time();
+#endif //TRI_COLLISION_PROFILING
+
+}
+
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactBvh.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactBvh.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactBvh.h	(revision 2431)
@@ -0,0 +1,394 @@
+#ifndef GIM_BOX_SET_H_INCLUDED
+#define GIM_BOX_SET_H_INCLUDED
+
+/*! \file gim_box_set.h
+\author Francisco Len Nßjera
+*/
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+
+#include "LinearMath/btAlignedObjectArray.h"
+
+#include "btBoxCollision.h"
+#include "btTriangleShapeEx.h"
+
+
+
+
+
+//! Overlapping pair
+struct GIM_PAIR
+{
+    int m_index1;
+    int m_index2;
+    GIM_PAIR()
+    {}
+
+    GIM_PAIR(const GIM_PAIR & p)
+    {
+    	m_index1 = p.m_index1;
+    	m_index2 = p.m_index2;
+	}
+
+	GIM_PAIR(int index1, int index2)
+    {
+    	m_index1 = index1;
+    	m_index2 = index2;
+	}
+};
+
+//! A pairset array
+class btPairSet: public btAlignedObjectArray<GIM_PAIR>
+{
+public:
+	btPairSet()
+	{
+		reserve(32);
+	}
+	inline void push_pair(int index1,int index2)
+	{
+		push_back(GIM_PAIR(index1,index2));
+	}
+
+	inline void push_pair_inv(int index1,int index2)
+	{
+		push_back(GIM_PAIR(index2,index1));
+	}
+};
+
+
+///GIM_BVH_DATA is an internal GIMPACT collision structure to contain axis aligned bounding box
+struct GIM_BVH_DATA
+{
+	btAABB m_bound;
+	int m_data;
+};
+
+//! Node Structure for trees
+class GIM_BVH_TREE_NODE
+{
+public:
+	btAABB m_bound;
+protected:
+	int	m_escapeIndexOrDataIndex;
+public:
+	GIM_BVH_TREE_NODE()
+	{
+		m_escapeIndexOrDataIndex = 0;
+	}
+
+	SIMD_FORCE_INLINE bool isLeafNode() const
+	{
+		//skipindex is negative (internal node), triangleindex >=0 (leafnode)
+		return (m_escapeIndexOrDataIndex>=0);
+	}
+
+	SIMD_FORCE_INLINE int getEscapeIndex() const
+	{
+		//btAssert(m_escapeIndexOrDataIndex < 0);
+		return -m_escapeIndexOrDataIndex;
+	}
+
+	SIMD_FORCE_INLINE void setEscapeIndex(int index)
+	{
+		m_escapeIndexOrDataIndex = -index;
+	}
+
+	SIMD_FORCE_INLINE int getDataIndex() const
+	{
+		//btAssert(m_escapeIndexOrDataIndex >= 0);
+
+		return m_escapeIndexOrDataIndex;
+	}
+
+	SIMD_FORCE_INLINE void setDataIndex(int index)
+	{
+		m_escapeIndexOrDataIndex = index;
+	}
+
+};
+
+
+class GIM_BVH_DATA_ARRAY:public btAlignedObjectArray<GIM_BVH_DATA>
+{
+};
+
+
+class GIM_BVH_TREE_NODE_ARRAY:public btAlignedObjectArray<GIM_BVH_TREE_NODE>
+{
+};
+
+
+
+
+//! Basic Box tree structure
+class btBvhTree
+{
+protected:
+	int m_num_nodes;
+	GIM_BVH_TREE_NODE_ARRAY m_node_array;
+protected:
+	int _sort_and_calc_splitting_index(
+		GIM_BVH_DATA_ARRAY & primitive_boxes,
+		 int startIndex,  int endIndex, int splitAxis);
+
+	int _calc_splitting_axis(GIM_BVH_DATA_ARRAY & primitive_boxes, int startIndex,  int endIndex);
+
+	void _build_sub_tree(GIM_BVH_DATA_ARRAY & primitive_boxes, int startIndex,  int endIndex);
+public:
+	btBvhTree()
+	{
+		m_num_nodes = 0;
+	}
+
+	//! prototype functions for box tree management
+	//!@{
+	void build_tree(GIM_BVH_DATA_ARRAY & primitive_boxes);
+
+	SIMD_FORCE_INLINE void clearNodes()
+	{
+		m_node_array.clear();
+		m_num_nodes = 0;
+	}
+
+	//! node count
+	SIMD_FORCE_INLINE int getNodeCount() const
+	{
+		return m_num_nodes;
+	}
+
+	//! tells if the node is a leaf
+	SIMD_FORCE_INLINE bool isLeafNode(int nodeindex) const
+	{
+		return m_node_array[nodeindex].isLeafNode();
+	}
+
+	SIMD_FORCE_INLINE int getNodeData(int nodeindex) const
+	{
+		return m_node_array[nodeindex].getDataIndex();
+	}
+
+	SIMD_FORCE_INLINE void getNodeBound(int nodeindex, btAABB & bound) const
+	{
+		bound = m_node_array[nodeindex].m_bound;
+	}
+
+	SIMD_FORCE_INLINE void setNodeBound(int nodeindex, const btAABB & bound)
+	{
+		m_node_array[nodeindex].m_bound = bound;
+	}
+
+	SIMD_FORCE_INLINE int getLeftNode(int nodeindex) const
+	{
+		return nodeindex+1;
+	}
+
+	SIMD_FORCE_INLINE int getRightNode(int nodeindex) const
+	{
+		if(m_node_array[nodeindex+1].isLeafNode()) return nodeindex+2;
+		return nodeindex+1 + m_node_array[nodeindex+1].getEscapeIndex();
+	}
+
+	SIMD_FORCE_INLINE int getEscapeNodeIndex(int nodeindex) const
+	{
+		return m_node_array[nodeindex].getEscapeIndex();
+	}
+
+	SIMD_FORCE_INLINE const GIM_BVH_TREE_NODE * get_node_pointer(int index = 0) const
+	{
+		return &m_node_array[index];
+	}
+
+	//!@}
+};
+
+
+//! Prototype Base class for primitive classification
+/*!
+This class is a wrapper for primitive collections.
+This tells relevant info for the Bounding Box set classes, which take care of space classification.
+This class can manage Compound shapes and trimeshes, and if it is managing trimesh then the  Hierarchy Bounding Box classes will take advantage of primitive Vs Box overlapping tests for getting optimal results and less Per Box compairisons.
+*/
+class btPrimitiveManagerBase
+{
+public:
+
+	//! determines if this manager consist on only triangles, which special case will be optimized
+	virtual bool is_trimesh() const = 0;
+	virtual int get_primitive_count() const = 0;
+	virtual void get_primitive_box(int prim_index ,btAABB & primbox) const = 0;
+	//! retrieves only the points of the triangle, and the collision margin
+	virtual void get_primitive_triangle(int prim_index,btPrimitiveTriangle & triangle) const= 0;
+};
+
+
+//! Structure for containing Boxes
+/*!
+This class offers an structure for managing a box tree of primitives.
+Requires a Primitive prototype (like btPrimitiveManagerBase )
+*/
+class btGImpactBvh
+{
+protected:
+	btBvhTree m_box_tree;
+	btPrimitiveManagerBase * m_primitive_manager;
+
+protected:
+	//stackless refit
+	void refit();
+public:
+
+	//! this constructor doesn't build the tree. you must call	buildSet
+	btGImpactBvh()
+	{
+		m_primitive_manager = NULL;
+	}
+
+	//! this constructor doesn't build the tree. you must call	buildSet
+	btGImpactBvh(btPrimitiveManagerBase * primitive_manager)
+	{
+		m_primitive_manager = primitive_manager;
+	}
+
+	SIMD_FORCE_INLINE btAABB getGlobalBox()  const
+	{
+		btAABB totalbox;
+		getNodeBound(0, totalbox);
+		return totalbox;
+	}
+
+	SIMD_FORCE_INLINE void setPrimitiveManager(btPrimitiveManagerBase * primitive_manager)
+	{
+		m_primitive_manager = primitive_manager;
+	}
+
+	SIMD_FORCE_INLINE btPrimitiveManagerBase * getPrimitiveManager() const
+	{
+		return m_primitive_manager;
+	}
+
+
+//! node manager prototype functions
+///@{
+
+	//! this attemps to refit the box set.
+	SIMD_FORCE_INLINE void update()
+	{
+		refit();
+	}
+
+	//! this rebuild the entire set
+	void buildSet();
+
+	//! returns the indices of the primitives in the m_primitive_manager
+	bool boxQuery(const btAABB & box, btAlignedObjectArray<int> & collided_results) const;
+
+	//! returns the indices of the primitives in the m_primitive_manager
+	SIMD_FORCE_INLINE bool boxQueryTrans(const btAABB & box,
+		 const btTransform & transform, btAlignedObjectArray<int> & collided_results) const
+	{
+		btAABB transbox=box;
+		transbox.appy_transform(transform);
+		return boxQuery(transbox,collided_results);
+	}
+
+	//! returns the indices of the primitives in the m_primitive_manager
+	bool rayQuery(
+		const btVector3 & ray_dir,const btVector3 & ray_origin ,
+		btAlignedObjectArray<int> & collided_results) const;
+
+	//! tells if this set has hierarcht
+	SIMD_FORCE_INLINE bool hasHierarchy() const
+	{
+		return true;
+	}
+
+	//! tells if this set is a trimesh
+	SIMD_FORCE_INLINE bool isTrimesh()  const
+	{
+		return m_primitive_manager->is_trimesh();
+	}
+
+	//! node count
+	SIMD_FORCE_INLINE int getNodeCount() const
+	{
+		return m_box_tree.getNodeCount();
+	}
+
+	//! tells if the node is a leaf
+	SIMD_FORCE_INLINE bool isLeafNode(int nodeindex) const
+	{
+		return m_box_tree.isLeafNode(nodeindex);
+	}
+
+	SIMD_FORCE_INLINE int getNodeData(int nodeindex) const
+	{
+		return m_box_tree.getNodeData(nodeindex);
+	}
+
+	SIMD_FORCE_INLINE void getNodeBound(int nodeindex, btAABB & bound)  const
+	{
+		m_box_tree.getNodeBound(nodeindex, bound);
+	}
+
+	SIMD_FORCE_INLINE void setNodeBound(int nodeindex, const btAABB & bound)
+	{
+		m_box_tree.setNodeBound(nodeindex, bound);
+	}
+
+
+	SIMD_FORCE_INLINE int getLeftNode(int nodeindex) const
+	{
+		return m_box_tree.getLeftNode(nodeindex);
+	}
+
+	SIMD_FORCE_INLINE int getRightNode(int nodeindex) const
+	{
+		return m_box_tree.getRightNode(nodeindex);
+	}
+
+	SIMD_FORCE_INLINE int getEscapeNodeIndex(int nodeindex) const
+	{
+		return m_box_tree.getEscapeNodeIndex(nodeindex);
+	}
+
+	SIMD_FORCE_INLINE void getNodeTriangle(int nodeindex,btPrimitiveTriangle & triangle) const
+	{
+		m_primitive_manager->get_primitive_triangle(getNodeData(nodeindex),triangle);
+	}
+
+
+	SIMD_FORCE_INLINE const GIM_BVH_TREE_NODE * get_node_pointer(int index = 0) const
+	{
+		return m_box_tree.get_node_pointer(index);
+	}
+
+
+	static float getAverageTreeCollisionTime();
+
+
+	static void find_collision(btGImpactBvh * boxset1, const btTransform & trans1,
+		btGImpactBvh * boxset2, const btTransform & trans2,
+		btPairSet & collision_pairs);
+};
+
+
+#endif // GIM_BOXPRUNING_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactCollisionAlgorithm.cpp
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactCollisionAlgorithm.cpp	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactCollisionAlgorithm.cpp	(revision 2431)
@@ -0,0 +1,897 @@
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+/*
+Author: Francisco Len Nßjera
+Concave-Concave Collision
+
+*/
+
+#include "BulletCollision/CollisionDispatch/btManifoldResult.h"
+#include "LinearMath/btIDebugDraw.h"
+#include "BulletCollision/CollisionDispatch/btCollisionObject.h"
+#include "BulletCollision/CollisionShapes/btBoxShape.h"
+#include "btGImpactCollisionAlgorithm.h"
+#include "btContactProcessing.h"
+#include "LinearMath/btQuickprof.h"
+
+
+//! Class for accessing the plane equation
+class btPlaneShape : public btStaticPlaneShape
+{
+public:
+
+	btPlaneShape(const btVector3& v, float f)
+		:btStaticPlaneShape(v,f)
+	{
+	}
+
+	void get_plane_equation(btVector4 &equation)
+	{
+		equation[0] = m_planeNormal[0];
+		equation[1] = m_planeNormal[1];
+		equation[2] = m_planeNormal[2];
+		equation[3] = m_planeConstant;
+	}
+
+
+	void get_plane_equation_transformed(const btTransform & trans,btVector4 &equation)
+	{
+		equation[0] = trans.getBasis().getRow(0).dot(m_planeNormal);
+		equation[1] = trans.getBasis().getRow(1).dot(m_planeNormal);
+		equation[2] = trans.getBasis().getRow(2).dot(m_planeNormal);
+		equation[3] = trans.getOrigin().dot(m_planeNormal) + m_planeConstant;
+	}
+};
+
+
+
+//////////////////////////////////////////////////////////////////////////////////////////////
+#ifdef TRI_COLLISION_PROFILING
+
+btClock g_triangle_clock;
+
+float g_accum_triangle_collision_time = 0;
+int g_count_triangle_collision = 0;
+
+void bt_begin_gim02_tri_time()
+{
+	g_triangle_clock.reset();
+}
+
+void bt_end_gim02_tri_time()
+{
+	g_accum_triangle_collision_time += g_triangle_clock.getTimeMicroseconds();
+	g_count_triangle_collision++;
+}
+#endif //TRI_COLLISION_PROFILING
+//! Retrieving shapes shapes
+/*!
+Declared here due of insuficent space on Pool allocators
+*/
+//!@{
+class GIM_ShapeRetriever
+{
+public:
+	btGImpactShapeInterface * m_gim_shape;
+	btTriangleShapeEx m_trishape;
+	btTetrahedronShapeEx m_tetrashape;
+
+public:
+	class ChildShapeRetriever
+	{
+	public:
+		GIM_ShapeRetriever * m_parent;
+		virtual btCollisionShape * getChildShape(int index)
+		{
+			return m_parent->m_gim_shape->getChildShape(index);
+		}
+	};
+
+	class TriangleShapeRetriever:public ChildShapeRetriever
+	{
+	public:
+
+		virtual btCollisionShape * getChildShape(int index)
+		{
+			m_parent->m_gim_shape->getBulletTriangle(index,m_parent->m_trishape);
+			return &m_parent->m_trishape;
+		}
+	};
+
+	class TetraShapeRetriever:public ChildShapeRetriever
+	{
+	public:
+
+		virtual btCollisionShape * getChildShape(int index)
+		{
+			m_parent->m_gim_shape->getBulletTetrahedron(index,m_parent->m_tetrashape);
+			return &m_parent->m_tetrashape;
+		}
+	};
+public:
+	ChildShapeRetriever m_child_retriever;
+	TriangleShapeRetriever m_tri_retriever;
+	TetraShapeRetriever  m_tetra_retriever;
+	ChildShapeRetriever * m_current_retriever;
+
+	GIM_ShapeRetriever(btGImpactShapeInterface * gim_shape)
+	{
+		m_gim_shape = gim_shape;
+		//select retriever
+		if(m_gim_shape->needsRetrieveTriangles())
+		{
+			m_current_retriever = &m_tri_retriever;
+		}
+		else if(m_gim_shape->needsRetrieveTetrahedrons())
+		{
+			m_current_retriever = &m_tetra_retriever;
+		}
+		else
+		{
+			m_current_retriever = &m_child_retriever;
+		}
+
+		m_current_retriever->m_parent = this;
+	}
+
+	btCollisionShape * getChildShape(int index)
+	{
+		return m_current_retriever->getChildShape(index);
+	}
+
+
+};
+
+
+
+//!@}
+
+
+#ifdef TRI_COLLISION_PROFILING
+
+//! Gets the average time in miliseconds of tree collisions
+float btGImpactCollisionAlgorithm::getAverageTreeCollisionTime()
+{
+	return btGImpactBoxSet::getAverageTreeCollisionTime();
+
+}
+
+//! Gets the average time in miliseconds of triangle collisions
+float btGImpactCollisionAlgorithm::getAverageTriangleCollisionTime()
+{
+	if(g_count_triangle_collision == 0) return 0;
+
+	float avgtime = g_accum_triangle_collision_time;
+	avgtime /= (float)g_count_triangle_collision;
+
+	g_accum_triangle_collision_time = 0;
+	g_count_triangle_collision = 0;
+
+	return avgtime;
+}
+
+#endif //TRI_COLLISION_PROFILING
+
+
+
+btGImpactCollisionAlgorithm::btGImpactCollisionAlgorithm( const btCollisionAlgorithmConstructionInfo& ci, btCollisionObject* body0,btCollisionObject* body1)
+: btActivatingCollisionAlgorithm(ci,body0,body1)
+{
+	m_manifoldPtr = NULL;
+	m_convex_algorithm = NULL;
+}
+
+btGImpactCollisionAlgorithm::~btGImpactCollisionAlgorithm()
+{
+	clearCache();
+}
+
+
+
+
+
+void btGImpactCollisionAlgorithm::addContactPoint(btCollisionObject * body0,
+				btCollisionObject * body1,
+				const btVector3 & point,
+				const btVector3 & normal,
+				btScalar distance)
+{
+	m_resultOut->setShapeIdentifiers(m_part0,m_triface0,m_part1,m_triface1);
+	checkManifold(body0,body1);
+	m_resultOut->addContactPoint(normal,point,distance);
+}
+
+
+void btGImpactCollisionAlgorithm::shape_vs_shape_collision(
+					  btCollisionObject * body0,
+					  btCollisionObject * body1,
+					  btCollisionShape * shape0,
+					  btCollisionShape * shape1)
+{
+
+	btCollisionShape* tmpShape0 = body0->getCollisionShape();
+	btCollisionShape* tmpShape1 = body1->getCollisionShape();
+	
+	body0->internalSetTemporaryCollisionShape(shape0);
+	body1->internalSetTemporaryCollisionShape(shape1);
+
+	{
+		btCollisionAlgorithm* algor = newAlgorithm(body0,body1);
+		// post :	checkManifold is called
+
+		m_resultOut->setShapeIdentifiers(m_part0,m_triface0,m_part1,m_triface1);
+
+		algor->processCollision(body0,body1,*m_dispatchInfo,m_resultOut);
+
+		algor->~btCollisionAlgorithm();
+		m_dispatcher->freeCollisionAlgorithm(algor);
+	}
+
+	body0->internalSetTemporaryCollisionShape(tmpShape0);
+	body1->internalSetTemporaryCollisionShape(tmpShape1);
+}
+
+void btGImpactCollisionAlgorithm::convex_vs_convex_collision(
+					  btCollisionObject * body0,
+					  btCollisionObject * body1,
+					  btCollisionShape * shape0,
+					  btCollisionShape * shape1)
+{
+
+	btCollisionShape* tmpShape0 = body0->getCollisionShape();
+	btCollisionShape* tmpShape1 = body1->getCollisionShape();
+	
+	body0->internalSetTemporaryCollisionShape(shape0);
+	body1->internalSetTemporaryCollisionShape(shape1);
+
+
+	m_resultOut->setShapeIdentifiers(m_part0,m_triface0,m_part1,m_triface1);
+
+	checkConvexAlgorithm(body0,body1);
+	m_convex_algorithm->processCollision(body0,body1,*m_dispatchInfo,m_resultOut);
+
+	body0->internalSetTemporaryCollisionShape(tmpShape0);
+	body1->internalSetTemporaryCollisionShape(tmpShape1);
+
+}
+
+
+
+
+void btGImpactCollisionAlgorithm::gimpact_vs_gimpact_find_pairs(
+					  const btTransform & trans0,
+					  const btTransform & trans1,
+					  btGImpactShapeInterface * shape0,
+					  btGImpactShapeInterface * shape1,btPairSet & pairset)
+{
+	if(shape0->hasBoxSet() && shape1->hasBoxSet())
+	{
+		btGImpactBoxSet::find_collision(shape0->getBoxSet(),trans0,shape1->getBoxSet(),trans1,pairset);
+	}
+	else
+	{
+		btAABB boxshape0;
+		btAABB boxshape1;
+		int i = shape0->getNumChildShapes();
+
+		while(i--)
+		{
+			shape0->getChildAabb(i,trans0,boxshape0.m_min,boxshape0.m_max);
+
+			int j = shape1->getNumChildShapes();
+			while(j--)
+			{
+				shape1->getChildAabb(i,trans1,boxshape1.m_min,boxshape1.m_max);
+
+				if(boxshape1.has_collision(boxshape0))
+				{
+					pairset.push_pair(i,j);
+				}
+			}
+		}
+	}
+
+
+}
+
+
+void btGImpactCollisionAlgorithm::gimpact_vs_shape_find_pairs(
+					  const btTransform & trans0,
+					  const btTransform & trans1,
+					  btGImpactShapeInterface * shape0,
+					  btCollisionShape * shape1,
+					  btAlignedObjectArray<int> & collided_primitives)
+{
+
+	btAABB boxshape;
+
+
+	if(shape0->hasBoxSet())
+	{
+		btTransform trans1to0 = trans0.inverse();
+		trans1to0 *= trans1;
+
+		shape1->getAabb(trans1to0,boxshape.m_min,boxshape.m_max);
+
+		shape0->getBoxSet()->boxQuery(boxshape, collided_primitives);
+	}
+	else
+	{
+		shape1->getAabb(trans1,boxshape.m_min,boxshape.m_max);
+
+		btAABB boxshape0;
+		int i = shape0->getNumChildShapes();
+
+		while(i--)
+		{
+			shape0->getChildAabb(i,trans0,boxshape0.m_min,boxshape0.m_max);
+
+			if(boxshape.has_collision(boxshape0))
+			{
+				collided_primitives.push_back(i);
+			}
+		}
+
+	}
+
+}
+
+
+void btGImpactCollisionAlgorithm::collide_gjk_triangles(btCollisionObject * body0,
+				  btCollisionObject * body1,
+				  btGImpactMeshShapePart * shape0,
+				  btGImpactMeshShapePart * shape1,
+				  const int * pairs, int pair_count)
+{
+	btTriangleShapeEx tri0;
+	btTriangleShapeEx tri1;
+
+	shape0->lockChildShapes();
+	shape1->lockChildShapes();
+
+	const int * pair_pointer = pairs;
+
+	while(pair_count--)
+	{
+
+		m_triface0 = *(pair_pointer);
+		m_triface1 = *(pair_pointer+1);
+		pair_pointer+=2;
+
+
+
+		shape0->getBulletTriangle(m_triface0,tri0);
+		shape1->getBulletTriangle(m_triface1,tri1);
+
+
+		//collide two convex shapes
+		if(tri0.overlap_test_conservative(tri1))
+		{
+			convex_vs_convex_collision(body0,body1,&tri0,&tri1);
+		}
+
+	}
+
+	shape0->unlockChildShapes();
+	shape1->unlockChildShapes();
+}
+
+void btGImpactCollisionAlgorithm::collide_sat_triangles(btCollisionObject * body0,
+					  btCollisionObject * body1,
+					  btGImpactMeshShapePart * shape0,
+					  btGImpactMeshShapePart * shape1,
+					  const int * pairs, int pair_count)
+{
+	btTransform orgtrans0 = body0->getWorldTransform();
+	btTransform orgtrans1 = body1->getWorldTransform();
+
+	btPrimitiveTriangle ptri0;
+	btPrimitiveTriangle ptri1;
+	GIM_TRIANGLE_CONTACT contact_data;
+
+	shape0->lockChildShapes();
+	shape1->lockChildShapes();
+
+	const int * pair_pointer = pairs;
+
+	while(pair_count--)
+	{
+
+		m_triface0 = *(pair_pointer);
+		m_triface1 = *(pair_pointer+1);
+		pair_pointer+=2;
+
+
+		shape0->getPrimitiveTriangle(m_triface0,ptri0);
+		shape1->getPrimitiveTriangle(m_triface1,ptri1);
+
+		#ifdef TRI_COLLISION_PROFILING
+		bt_begin_gim02_tri_time();
+		#endif
+
+		ptri0.applyTransform(orgtrans0);
+		ptri1.applyTransform(orgtrans1);
+
+
+		//build planes
+		ptri0.buildTriPlane();
+		ptri1.buildTriPlane();
+		// test conservative
+
+
+
+		if(ptri0.overlap_test_conservative(ptri1))
+		{
+			if(ptri0.find_triangle_collision_clip_method(ptri1,contact_data))
+			{
+
+				int j = contact_data.m_point_count;
+				while(j--)
+				{
+
+					addContactPoint(body0, body1,
+								contact_data.m_points[j],
+								contact_data.m_separating_normal,
+								-contact_data.m_penetration_depth);
+				}
+			}
+		}
+
+		#ifdef TRI_COLLISION_PROFILING
+		bt_end_gim02_tri_time();
+		#endif
+
+	}
+
+	shape0->unlockChildShapes();
+	shape1->unlockChildShapes();
+
+}
+
+
+void btGImpactCollisionAlgorithm::gimpact_vs_gimpact(
+						btCollisionObject * body0,
+					   	btCollisionObject * body1,
+					  	btGImpactShapeInterface * shape0,
+					  	btGImpactShapeInterface * shape1)
+{
+
+	if(shape0->getGImpactShapeType()==CONST_GIMPACT_TRIMESH_SHAPE)
+	{
+		btGImpactMeshShape * meshshape0 = static_cast<btGImpactMeshShape *>(shape0);
+		m_part0 = meshshape0->getMeshPartCount();
+
+		while(m_part0--)
+		{
+			gimpact_vs_gimpact(body0,body1,meshshape0->getMeshPart(m_part0),shape1);
+		}
+
+		return;
+	}
+
+	if(shape1->getGImpactShapeType()==CONST_GIMPACT_TRIMESH_SHAPE)
+	{
+		btGImpactMeshShape * meshshape1 = static_cast<btGImpactMeshShape *>(shape1);
+		m_part1 = meshshape1->getMeshPartCount();
+
+		while(m_part1--)
+		{
+
+			gimpact_vs_gimpact(body0,body1,shape0,meshshape1->getMeshPart(m_part1));
+
+		}
+
+		return;
+	}
+
+
+	btTransform orgtrans0 = body0->getWorldTransform();
+	btTransform orgtrans1 = body1->getWorldTransform();
+
+	btPairSet pairset;
+
+	gimpact_vs_gimpact_find_pairs(orgtrans0,orgtrans1,shape0,shape1,pairset);
+
+	if(pairset.size()== 0) return;
+
+	if(shape0->getGImpactShapeType() == CONST_GIMPACT_TRIMESH_SHAPE_PART &&
+		shape1->getGImpactShapeType() == CONST_GIMPACT_TRIMESH_SHAPE_PART)
+	{
+		btGImpactMeshShapePart * shapepart0 = static_cast<btGImpactMeshShapePart * >(shape0);
+		btGImpactMeshShapePart * shapepart1 = static_cast<btGImpactMeshShapePart * >(shape1);
+		//specialized function
+		#ifdef BULLET_TRIANGLE_COLLISION
+		collide_gjk_triangles(body0,body1,shapepart0,shapepart1,&pairset[0].m_index1,pairset.size());
+		#else
+		collide_sat_triangles(body0,body1,shapepart0,shapepart1,&pairset[0].m_index1,pairset.size());
+		#endif
+
+		return;
+	}
+
+	//general function
+
+	shape0->lockChildShapes();
+	shape1->lockChildShapes();
+
+	GIM_ShapeRetriever retriever0(shape0);
+	GIM_ShapeRetriever retriever1(shape1);
+
+	bool child_has_transform0 = shape0->childrenHasTransform();
+	bool child_has_transform1 = shape1->childrenHasTransform();
+
+	int i = pairset.size();
+	while(i--)
+	{
+		GIM_PAIR * pair = &pairset[i];
+		m_triface0 = pair->m_index1;
+		m_triface1 = pair->m_index2;
+		btCollisionShape * colshape0 = retriever0.getChildShape(m_triface0);
+		btCollisionShape * colshape1 = retriever1.getChildShape(m_triface1);
+
+		if(child_has_transform0)
+		{
+			body0->setWorldTransform(orgtrans0*shape0->getChildTransform(m_triface0));
+		}
+
+		if(child_has_transform1)
+		{
+			body1->setWorldTransform(orgtrans1*shape1->getChildTransform(m_triface1));
+		}
+
+		//collide two convex shapes
+		convex_vs_convex_collision(body0,body1,colshape0,colshape1);
+
+
+		if(child_has_transform0)
+		{
+			body0->setWorldTransform(orgtrans0);
+		}
+
+		if(child_has_transform1)
+		{
+			body1->setWorldTransform(orgtrans1);
+		}
+
+	}
+
+	shape0->unlockChildShapes();
+	shape1->unlockChildShapes();
+}
+
+void btGImpactCollisionAlgorithm::gimpact_vs_shape(btCollisionObject * body0,
+				  btCollisionObject * body1,
+				  btGImpactShapeInterface * shape0,
+				  btCollisionShape * shape1,bool swapped)
+{
+	if(shape0->getGImpactShapeType()==CONST_GIMPACT_TRIMESH_SHAPE)
+	{
+		btGImpactMeshShape * meshshape0 = static_cast<btGImpactMeshShape *>(shape0);
+		int& part = swapped ? m_part1 : m_part0;
+		part = meshshape0->getMeshPartCount();
+
+		while(part--)
+		{
+
+			gimpact_vs_shape(body0,
+				  body1,
+				  meshshape0->getMeshPart(part),
+				  shape1,swapped);
+
+		}
+
+		return;
+	}
+
+	#ifdef GIMPACT_VS_PLANE_COLLISION
+	if(shape0->getGImpactShapeType() == CONST_GIMPACT_TRIMESH_SHAPE_PART &&
+		shape1->getShapeType() == STATIC_PLANE_PROXYTYPE)
+	{
+		btGImpactMeshShapePart * shapepart = static_cast<btGImpactMeshShapePart *>(shape0);
+		btStaticPlaneShape * planeshape = static_cast<btStaticPlaneShape * >(shape1);
+		gimpacttrimeshpart_vs_plane_collision(body0,body1,shapepart,planeshape,swapped);
+		return;
+	}
+
+	#endif
+
+
+
+	if(shape1->isCompound())
+	{
+		btCompoundShape * compoundshape = static_cast<btCompoundShape *>(shape1);
+		gimpact_vs_compoundshape(body0,body1,shape0,compoundshape,swapped);
+		return;
+	}
+	else if(shape1->isConcave())
+	{
+		btConcaveShape * concaveshape = static_cast<btConcaveShape *>(shape1);
+		gimpact_vs_concave(body0,body1,shape0,concaveshape,swapped);
+		return;
+	}
+
+
+	btTransform orgtrans0 = body0->getWorldTransform();
+
+	btTransform orgtrans1 = body1->getWorldTransform();
+
+	btAlignedObjectArray<int> collided_results;
+
+	gimpact_vs_shape_find_pairs(orgtrans0,orgtrans1,shape0,shape1,collided_results);
+
+	if(collided_results.size() == 0) return;
+
+
+	shape0->lockChildShapes();
+
+	GIM_ShapeRetriever retriever0(shape0);
+
+
+	bool child_has_transform0 = shape0->childrenHasTransform();
+
+
+	int i = collided_results.size();
+
+	while(i--)
+	{
+		int child_index = collided_results[i];
+        if(swapped)
+    		m_triface1 = child_index;
+        else
+            m_triface0 = child_index;
+
+		btCollisionShape * colshape0 = retriever0.getChildShape(child_index);
+
+		if(child_has_transform0)
+		{
+			body0->setWorldTransform(orgtrans0*shape0->getChildTransform(child_index));
+		}
+
+		//collide two shapes
+		if(swapped)
+		{
+			shape_vs_shape_collision(body1,body0,shape1,colshape0);
+		}
+		else
+		{
+			shape_vs_shape_collision(body0,body1,colshape0,shape1);
+		}
+
+		//restore transforms
+		if(child_has_transform0)
+		{
+			body0->setWorldTransform(orgtrans0);
+		}
+
+	}
+
+	shape0->unlockChildShapes();
+
+}
+
+void btGImpactCollisionAlgorithm::gimpact_vs_compoundshape(btCollisionObject * body0,
+				  btCollisionObject * body1,
+				  btGImpactShapeInterface * shape0,
+				  btCompoundShape * shape1,bool swapped)
+{
+	btTransform orgtrans1 = body1->getWorldTransform();
+
+	int i = shape1->getNumChildShapes();
+	while(i--)
+	{
+
+		btCollisionShape * colshape1 = shape1->getChildShape(i);
+		btTransform childtrans1 = orgtrans1*shape1->getChildTransform(i);
+
+		body1->setWorldTransform(childtrans1);
+
+		//collide child shape
+		gimpact_vs_shape(body0, body1,
+					  shape0,colshape1,swapped);
+
+
+		//restore transforms
+		body1->setWorldTransform(orgtrans1);
+	}
+}
+
+void btGImpactCollisionAlgorithm::gimpacttrimeshpart_vs_plane_collision(
+					  btCollisionObject * body0,
+					  btCollisionObject * body1,
+					  btGImpactMeshShapePart * shape0,
+					  btStaticPlaneShape * shape1,bool swapped)
+{
+
+
+	btTransform orgtrans0 = body0->getWorldTransform();
+	btTransform orgtrans1 = body1->getWorldTransform();
+
+	btPlaneShape * planeshape = static_cast<btPlaneShape *>(shape1);
+	btVector4 plane;
+	planeshape->get_plane_equation_transformed(orgtrans1,plane);
+
+	//test box against plane
+
+	btAABB tribox;
+	shape0->getAabb(orgtrans0,tribox.m_min,tribox.m_max);
+	tribox.increment_margin(planeshape->getMargin());
+
+	if( tribox.plane_classify(plane)!= BT_CONST_COLLIDE_PLANE) return;
+
+	shape0->lockChildShapes();
+
+	btScalar margin = shape0->getMargin() + planeshape->getMargin();
+
+	btVector3 vertex;
+	int vi = shape0->getVertexCount();
+	while(vi--)
+	{
+		shape0->getVertex(vi,vertex);
+		vertex = orgtrans0(vertex);
+
+		btScalar distance = vertex.dot(plane) - plane[3] - margin;
+
+		if(distance<0.0)//add contact
+		{
+			if(swapped)
+			{
+				addContactPoint(body1, body0,
+					vertex,
+					-plane,
+					distance);
+			}
+			else
+			{
+				addContactPoint(body0, body1,
+					vertex,
+					plane,
+					distance);
+			}
+		}
+	}
+
+	shape0->unlockChildShapes();
+}
+
+
+
+
+class btGImpactTriangleCallback: public btTriangleCallback
+{
+public:
+	btGImpactCollisionAlgorithm * algorithm;
+	btCollisionObject * body0;
+	btCollisionObject * body1;
+	btGImpactShapeInterface * gimpactshape0;
+	bool swapped;
+	btScalar margin;
+
+	virtual void processTriangle(btVector3* triangle, int partId, int triangleIndex)
+	{
+		btTriangleShapeEx tri1(triangle[0],triangle[1],triangle[2]);
+		tri1.setMargin(margin);
+        if(swapped)
+        {
+            algorithm->setPart0(partId);
+            algorithm->setFace0(triangleIndex);
+        }
+        else
+        {
+            algorithm->setPart1(partId);
+            algorithm->setFace1(triangleIndex);
+        }
+		algorithm->gimpact_vs_shape(
+							body0,body1,gimpactshape0,&tri1,swapped);
+	}
+};
+
+
+
+
+void btGImpactCollisionAlgorithm::gimpact_vs_concave(
+				  btCollisionObject * body0,
+				  btCollisionObject * body1,
+				  btGImpactShapeInterface * shape0,
+				  btConcaveShape * shape1,bool swapped)
+{
+	//create the callback
+	btGImpactTriangleCallback tricallback;
+	tricallback.algorithm = this;
+	tricallback.body0 = body0;
+	tricallback.body1 = body1;
+	tricallback.gimpactshape0 = shape0;
+	tricallback.swapped = swapped;
+	tricallback.margin = shape1->getMargin();
+
+	//getting the trimesh AABB
+	btTransform gimpactInConcaveSpace;
+
+	gimpactInConcaveSpace = body1->getWorldTransform().inverse() * body0->getWorldTransform();
+
+	btVector3 minAABB,maxAABB;
+	shape0->getAabb(gimpactInConcaveSpace,minAABB,maxAABB);
+
+	shape1->processAllTriangles(&tricallback,minAABB,maxAABB);
+
+}
+
+
+
+void btGImpactCollisionAlgorithm::processCollision (btCollisionObject* body0,btCollisionObject* body1,const btDispatcherInfo& dispatchInfo,btManifoldResult* resultOut)
+{
+    clearCache();
+
+    m_resultOut = resultOut;
+	m_dispatchInfo = &dispatchInfo;
+    btGImpactShapeInterface * gimpactshape0;
+    btGImpactShapeInterface * gimpactshape1;
+
+	if (body0->getCollisionShape()->getShapeType()==GIMPACT_SHAPE_PROXYTYPE)
+	{
+		gimpactshape0 = static_cast<btGImpactShapeInterface *>(body0->getCollisionShape());
+
+		if( body1->getCollisionShape()->getShapeType()==GIMPACT_SHAPE_PROXYTYPE )
+		{
+			gimpactshape1 = static_cast<btGImpactShapeInterface *>(body1->getCollisionShape());
+
+			gimpact_vs_gimpact(body0,body1,gimpactshape0,gimpactshape1);
+		}
+		else
+		{
+			gimpact_vs_shape(body0,body1,gimpactshape0,body1->getCollisionShape(),false);
+		}
+
+	}
+	else if (body1->getCollisionShape()->getShapeType()==GIMPACT_SHAPE_PROXYTYPE )
+	{
+		gimpactshape1 = static_cast<btGImpactShapeInterface *>(body1->getCollisionShape());
+
+		gimpact_vs_shape(body1,body0,gimpactshape1,body0->getCollisionShape(),true);
+	}
+}
+
+
+btScalar btGImpactCollisionAlgorithm::calculateTimeOfImpact(btCollisionObject* body0,btCollisionObject* body1,const btDispatcherInfo& dispatchInfo,btManifoldResult* resultOut)
+{
+	return 1.f;
+
+}
+
+///////////////////////////////////// REGISTERING ALGORITHM //////////////////////////////////////////////
+
+btGImpactCollisionAlgorithm::CreateFunc g_gimpact_cf;
+
+//! Use this function for register the algorithm externally
+void btGImpactCollisionAlgorithm::registerAlgorithm(btCollisionDispatcher * dispatcher)
+{
+
+	int i;
+
+	for ( i = 0;i < MAX_BROADPHASE_COLLISION_TYPES ;i++ )
+	{
+		dispatcher->registerCollisionCreateFunc(GIMPACT_SHAPE_PROXYTYPE,i ,&g_gimpact_cf);
+	}
+
+	for ( i = 0;i < MAX_BROADPHASE_COLLISION_TYPES ;i++ )
+	{
+		dispatcher->registerCollisionCreateFunc(i,GIMPACT_SHAPE_PROXYTYPE ,&g_gimpact_cf);
+	}
+
+}
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactCollisionAlgorithm.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactCollisionAlgorithm.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactCollisionAlgorithm.h	(revision 2431)
@@ -0,0 +1,306 @@
+/*! \file btGImpactShape.h
+\author Francisco Len Nßjera
+*/
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef BVH_CONCAVE_COLLISION_ALGORITHM_H
+#define BVH_CONCAVE_COLLISION_ALGORITHM_H
+
+#include "BulletCollision/CollisionDispatch/btActivatingCollisionAlgorithm.h"
+#include "BulletCollision/BroadphaseCollision/btDispatcher.h"
+#include "BulletCollision/BroadphaseCollision/btBroadphaseInterface.h"
+#include "BulletCollision/NarrowPhaseCollision/btPersistentManifold.h"
+class btDispatcher;
+#include "BulletCollision/BroadphaseCollision/btBroadphaseProxy.h"
+#include "BulletCollision/CollisionDispatch/btCollisionCreateFunc.h"
+#include "BulletCollision/CollisionDispatch/btCollisionDispatcher.h"
+
+#include "LinearMath/btAlignedObjectArray.h"
+
+#include "btGImpactShape.h"
+#include "BulletCollision/CollisionShapes/btStaticPlaneShape.h"
+#include "BulletCollision/CollisionShapes/btCompoundShape.h"
+#include "BulletCollision/CollisionDispatch/btConvexConvexAlgorithm.h"
+#include "LinearMath/btIDebugDraw.h"
+
+
+
+//! Collision Algorithm for GImpact Shapes
+/*!
+For register this algorithm in Bullet, proceed as following:
+ \code
+btCollisionDispatcher * dispatcher = static_cast<btCollisionDispatcher *>(m_dynamicsWorld ->getDispatcher());
+btGImpactCollisionAlgorithm::registerAlgorithm(dispatcher);
+ \endcode
+*/
+class btGImpactCollisionAlgorithm : public btActivatingCollisionAlgorithm
+{
+protected:
+	btCollisionAlgorithm * m_convex_algorithm;
+    btPersistentManifold * m_manifoldPtr;
+	btManifoldResult* m_resultOut;
+	const btDispatcherInfo * m_dispatchInfo;
+	int m_triface0;
+	int m_part0;
+	int m_triface1;
+	int m_part1;
+
+
+	//! Creates a new contact point
+	SIMD_FORCE_INLINE btPersistentManifold* newContactManifold(btCollisionObject* body0,btCollisionObject* body1)
+	{
+		m_manifoldPtr = m_dispatcher->getNewManifold(body0,body1);
+		return m_manifoldPtr;
+	}
+
+	SIMD_FORCE_INLINE void destroyConvexAlgorithm()
+	{
+		if(m_convex_algorithm)
+		{
+			m_convex_algorithm->~btCollisionAlgorithm();
+			m_dispatcher->freeCollisionAlgorithm( m_convex_algorithm);
+			m_convex_algorithm = NULL;
+		}
+	}
+
+	SIMD_FORCE_INLINE void destroyContactManifolds()
+	{
+		if(m_manifoldPtr == NULL) return;
+		m_dispatcher->releaseManifold(m_manifoldPtr);
+		m_manifoldPtr = NULL;
+	}
+
+	SIMD_FORCE_INLINE void clearCache()
+	{
+		destroyContactManifolds();
+		destroyConvexAlgorithm();
+
+		m_triface0 = -1;
+		m_part0 = -1;
+		m_triface1 = -1;
+		m_part1 = -1;
+	}
+
+	SIMD_FORCE_INLINE btPersistentManifold* getLastManifold()
+	{
+		return m_manifoldPtr;
+	}
+
+
+	// Call before process collision
+	SIMD_FORCE_INLINE void checkManifold(btCollisionObject* body0,btCollisionObject* body1)
+	{
+		if(getLastManifold() == 0)
+		{
+			newContactManifold(body0,body1);
+		}
+
+		m_resultOut->setPersistentManifold(getLastManifold());
+	}
+
+	// Call before process collision
+	SIMD_FORCE_INLINE btCollisionAlgorithm * newAlgorithm(btCollisionObject* body0,btCollisionObject* body1)
+	{
+		checkManifold(body0,body1);
+
+		btCollisionAlgorithm * convex_algorithm = m_dispatcher->findAlgorithm(
+				body0,body1,getLastManifold());
+		return convex_algorithm ;
+	}
+
+	// Call before process collision
+	SIMD_FORCE_INLINE void checkConvexAlgorithm(btCollisionObject* body0,btCollisionObject* body1)
+	{
+		if(m_convex_algorithm) return;
+		m_convex_algorithm = newAlgorithm(body0,body1);
+	}
+
+
+
+
+	void addContactPoint(btCollisionObject * body0,
+					btCollisionObject * body1,
+					const btVector3 & point,
+					const btVector3 & normal,
+					btScalar distance);
+
+//! Collision routines
+//!@{
+
+	void collide_gjk_triangles(btCollisionObject * body0,
+				  btCollisionObject * body1,
+				  btGImpactMeshShapePart * shape0,
+				  btGImpactMeshShapePart * shape1,
+				  const int * pairs, int pair_count);
+
+	void collide_sat_triangles(btCollisionObject * body0,
+					  btCollisionObject * body1,
+					  btGImpactMeshShapePart * shape0,
+					  btGImpactMeshShapePart * shape1,
+					  const int * pairs, int pair_count);
+
+
+
+
+	void shape_vs_shape_collision(
+					  btCollisionObject * body0,
+					  btCollisionObject * body1,
+					  btCollisionShape * shape0,
+					  btCollisionShape * shape1);
+
+	void convex_vs_convex_collision(btCollisionObject * body0,
+					  btCollisionObject * body1,
+					  btCollisionShape * shape0,
+					  btCollisionShape * shape1);
+
+
+
+	void gimpact_vs_gimpact_find_pairs(
+					  const btTransform & trans0,
+					  const btTransform & trans1,
+					  btGImpactShapeInterface * shape0,
+					  btGImpactShapeInterface * shape1,btPairSet & pairset);
+
+	void gimpact_vs_shape_find_pairs(
+					  const btTransform & trans0,
+					  const btTransform & trans1,
+					  btGImpactShapeInterface * shape0,
+					  btCollisionShape * shape1,
+					  btAlignedObjectArray<int> & collided_primitives);
+
+
+	void gimpacttrimeshpart_vs_plane_collision(
+					  btCollisionObject * body0,
+					  btCollisionObject * body1,
+					  btGImpactMeshShapePart * shape0,
+					  btStaticPlaneShape * shape1,bool swapped);
+
+
+public:
+
+	btGImpactCollisionAlgorithm( const btCollisionAlgorithmConstructionInfo& ci,btCollisionObject* body0,btCollisionObject* body1);
+
+	virtual ~btGImpactCollisionAlgorithm();
+
+	virtual void processCollision (btCollisionObject* body0,btCollisionObject* body1,const btDispatcherInfo& dispatchInfo,btManifoldResult* resultOut);
+
+	btScalar	calculateTimeOfImpact(btCollisionObject* body0,btCollisionObject* body1,const btDispatcherInfo& dispatchInfo,btManifoldResult* resultOut);
+
+	virtual	void	getAllContactManifolds(btManifoldArray&	manifoldArray)
+	{
+		if (m_manifoldPtr)
+			manifoldArray.push_back(m_manifoldPtr);
+	}
+
+
+	struct CreateFunc :public 	btCollisionAlgorithmCreateFunc
+	{
+		virtual	btCollisionAlgorithm* CreateCollisionAlgorithm(btCollisionAlgorithmConstructionInfo& ci, btCollisionObject* body0,btCollisionObject* body1)
+		{
+			void* mem = ci.m_dispatcher1->allocateCollisionAlgorithm(sizeof(btGImpactCollisionAlgorithm));
+			return new(mem) btGImpactCollisionAlgorithm(ci,body0,body1);
+		}
+	};
+
+	//! Use this function for register the algorithm externally
+	static void registerAlgorithm(btCollisionDispatcher * dispatcher);
+
+	//! Gets the average time in miliseconds of tree collisions
+	static float getAverageTreeCollisionTime();
+
+	//! Gets the average time in miliseconds of triangle collisions
+	static float getAverageTriangleCollisionTime();
+
+
+	//! Collides two gimpact shapes
+	/*!
+	\pre shape0 and shape1 couldn't be btGImpactMeshShape objects
+	*/
+
+
+	void gimpact_vs_gimpact(btCollisionObject * body0,
+					  btCollisionObject * body1,
+					  btGImpactShapeInterface * shape0,
+					  btGImpactShapeInterface * shape1);
+
+	void gimpact_vs_shape(btCollisionObject * body0,
+					  btCollisionObject * body1,
+					  btGImpactShapeInterface * shape0,
+					  btCollisionShape * shape1,bool swapped);
+
+	void gimpact_vs_compoundshape(btCollisionObject * body0,
+					  btCollisionObject * body1,
+					  btGImpactShapeInterface * shape0,
+					  btCompoundShape * shape1,bool swapped);
+
+	void gimpact_vs_concave(
+					  btCollisionObject * body0,
+					  btCollisionObject * body1,
+					  btGImpactShapeInterface * shape0,
+					  btConcaveShape * shape1,bool swapped);
+
+
+
+
+		/// Accessor/Mutator pairs for Part and triangleID
+    void 	setFace0(int value) 
+    { 
+    	m_triface0 = value; 
+    }
+    int getFace0() 
+    { 
+    	return m_triface0; 
+    }
+    void setFace1(int value) 
+    { 
+    	m_triface1 = value; 
+    }
+    int getFace1() 
+    { 
+    	return m_triface1; 
+    }
+    void setPart0(int value) 
+    { 
+    	m_part0 = value; 
+    }
+    int getPart0() 
+    { 
+    	return m_part0; 
+    }
+    void setPart1(int value) 
+    { 
+    	m_part1 = value; 
+		}
+    int getPart1() 
+    { 
+    	return m_part1; 
+    }
+
+};
+
+
+//algorithm details
+//#define BULLET_TRIANGLE_COLLISION 1
+#define GIMPACT_VS_PLANE_COLLISION 1
+
+
+
+#endif //BVH_CONCAVE_COLLISION_ALGORITHM_H
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactMassUtil.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactMassUtil.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactMassUtil.h	(revision 2431)
@@ -0,0 +1,60 @@
+/*! \file btGImpactMassUtil.h
+\author Francisco Len Nßjera
+*/
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+
+#ifndef GIMPACT_MASS_UTIL_H
+#define GIMPACT_MASS_UTIL_H
+
+#include "LinearMath/btTransform.h"
+
+
+
+SIMD_FORCE_INLINE btVector3 gim_inertia_add_transformed(
+	const btVector3 & source_inertia, const btVector3 & added_inertia, const btTransform & transform)
+{
+	btMatrix3x3  rotatedTensor = transform.getBasis().scaled(added_inertia) * transform.getBasis().transpose();
+
+	btScalar x2 = transform.getOrigin()[0];
+	x2*= x2;
+	btScalar y2 = transform.getOrigin()[1];
+	y2*= y2;
+	btScalar z2 = transform.getOrigin()[2];
+	z2*= z2;
+
+	btScalar ix = rotatedTensor[0][0]*(y2+z2);
+	btScalar iy = rotatedTensor[1][1]*(x2+z2);
+	btScalar iz = rotatedTensor[2][2]*(x2+y2);
+
+	return btVector3(source_inertia[0]+ix,source_inertia[1]+iy,source_inertia[2] + iz);
+}
+
+SIMD_FORCE_INLINE btVector3 gim_get_point_inertia(const btVector3 & point, btScalar mass)
+{
+	btScalar x2 = point[0]*point[0];
+	btScalar y2 = point[1]*point[1];
+	btScalar z2 = point[2]*point[2];
+	return btVector3(mass*(y2+z2),mass*(x2+z2),mass*(x2+y2));
+}
+
+
+#endif //GIMPACT_MESH_SHAPE_H
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactQuantizedBvh.cpp
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactQuantizedBvh.cpp	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactQuantizedBvh.cpp	(revision 2431)
@@ -0,0 +1,529 @@
+/*! \file gim_box_set.h
+\author Francisco Len Nßjera
+*/
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "btGImpactQuantizedBvh.h"
+#include "LinearMath/btQuickprof.h"
+
+#ifdef TRI_COLLISION_PROFILING
+btClock g_q_tree_clock;
+
+
+float g_q_accum_tree_collision_time = 0;
+int g_q_count_traversing = 0;
+
+
+void bt_begin_gim02_q_tree_time()
+{
+	g_q_tree_clock.reset();
+}
+
+void bt_end_gim02_q_tree_time()
+{
+	g_q_accum_tree_collision_time += g_q_tree_clock.getTimeMicroseconds();
+	g_q_count_traversing++;
+}
+
+
+//! Gets the average time in miliseconds of tree collisions
+float btGImpactQuantizedBvh::getAverageTreeCollisionTime()
+{
+	if(g_q_count_traversing == 0) return 0;
+
+	float avgtime = g_q_accum_tree_collision_time;
+	avgtime /= (float)g_q_count_traversing;
+
+	g_q_accum_tree_collision_time = 0;
+	g_q_count_traversing = 0;
+	return avgtime;
+
+//	float avgtime = g_q_count_traversing;
+//	g_q_count_traversing = 0;
+//	return avgtime;
+
+}
+
+#endif //TRI_COLLISION_PROFILING
+
+/////////////////////// btQuantizedBvhTree /////////////////////////////////
+
+void btQuantizedBvhTree::calc_quantization(
+	GIM_BVH_DATA_ARRAY & primitive_boxes, btScalar boundMargin)
+{
+	//calc globa box
+	btAABB global_bound;
+	global_bound.invalidate();
+
+	for (int i=0;i<primitive_boxes.size() ;i++ )
+	{
+		global_bound.merge(primitive_boxes[i].m_bound);
+	}
+
+	bt_calc_quantization_parameters(
+		m_global_bound.m_min,m_global_bound.m_max,m_bvhQuantization,global_bound.m_min,global_bound.m_max,boundMargin);
+
+}
+
+
+
+int btQuantizedBvhTree::_calc_splitting_axis(
+	GIM_BVH_DATA_ARRAY & primitive_boxes, int startIndex,  int endIndex)
+{
+
+	int i;
+
+	btVector3 means(btScalar(0.),btScalar(0.),btScalar(0.));
+	btVector3 variance(btScalar(0.),btScalar(0.),btScalar(0.));
+	int numIndices = endIndex-startIndex;
+
+	for (i=startIndex;i<endIndex;i++)
+	{
+		btVector3 center = btScalar(0.5)*(primitive_boxes[i].m_bound.m_max +
+					 primitive_boxes[i].m_bound.m_min);
+		means+=center;
+	}
+	means *= (btScalar(1.)/(btScalar)numIndices);
+
+	for (i=startIndex;i<endIndex;i++)
+	{
+		btVector3 center = btScalar(0.5)*(primitive_boxes[i].m_bound.m_max +
+					 primitive_boxes[i].m_bound.m_min);
+		btVector3 diff2 = center-means;
+		diff2 = diff2 * diff2;
+		variance += diff2;
+	}
+	variance *= (btScalar(1.)/	((btScalar)numIndices-1)	);
+
+	return variance.maxAxis();
+}
+
+
+int btQuantizedBvhTree::_sort_and_calc_splitting_index(
+	GIM_BVH_DATA_ARRAY & primitive_boxes, int startIndex,
+	int endIndex, int splitAxis)
+{
+	int i;
+	int splitIndex =startIndex;
+	int numIndices = endIndex - startIndex;
+
+	// average of centers
+	btScalar splitValue = 0.0f;
+
+	btVector3 means(btScalar(0.),btScalar(0.),btScalar(0.));
+	for (i=startIndex;i<endIndex;i++)
+	{
+		btVector3 center = btScalar(0.5)*(primitive_boxes[i].m_bound.m_max +
+					 primitive_boxes[i].m_bound.m_min);
+		means+=center;
+	}
+	means *= (btScalar(1.)/(btScalar)numIndices);
+
+	splitValue = means[splitAxis];
+
+
+	//sort leafNodes so all values larger then splitValue comes first, and smaller values start from 'splitIndex'.
+	for (i=startIndex;i<endIndex;i++)
+	{
+		btVector3 center = btScalar(0.5)*(primitive_boxes[i].m_bound.m_max +
+					 primitive_boxes[i].m_bound.m_min);
+		if (center[splitAxis] > splitValue)
+		{
+			//swap
+			primitive_boxes.swap(i,splitIndex);
+			//swapLeafNodes(i,splitIndex);
+			splitIndex++;
+		}
+	}
+
+	//if the splitIndex causes unbalanced trees, fix this by using the center in between startIndex and endIndex
+	//otherwise the tree-building might fail due to stack-overflows in certain cases.
+	//unbalanced1 is unsafe: it can cause stack overflows
+	//bool unbalanced1 = ((splitIndex==startIndex) || (splitIndex == (endIndex-1)));
+
+	//unbalanced2 should work too: always use center (perfect balanced trees)
+	//bool unbalanced2 = true;
+
+	//this should be safe too:
+	int rangeBalancedIndices = numIndices/3;
+	bool unbalanced = ((splitIndex<=(startIndex+rangeBalancedIndices)) || (splitIndex >=(endIndex-1-rangeBalancedIndices)));
+
+	if (unbalanced)
+	{
+		splitIndex = startIndex+ (numIndices>>1);
+	}
+
+	bool unbal = (splitIndex==startIndex) || (splitIndex == (endIndex));
+	btAssert(!unbal);
+
+	return splitIndex;
+
+}
+
+
+void btQuantizedBvhTree::_build_sub_tree(GIM_BVH_DATA_ARRAY & primitive_boxes, int startIndex,  int endIndex)
+{
+	int curIndex = m_num_nodes;
+	m_num_nodes++;
+
+	btAssert((endIndex-startIndex)>0);
+
+	if ((endIndex-startIndex)==1)
+	{
+	    //We have a leaf node
+	    setNodeBound(curIndex,primitive_boxes[startIndex].m_bound);
+		m_node_array[curIndex].setDataIndex(primitive_boxes[startIndex].m_data);
+
+		return;
+	}
+	//calculate Best Splitting Axis and where to split it. Sort the incoming 'leafNodes' array within range 'startIndex/endIndex'.
+
+	//split axis
+	int splitIndex = _calc_splitting_axis(primitive_boxes,startIndex,endIndex);
+
+	splitIndex = _sort_and_calc_splitting_index(
+			primitive_boxes,startIndex,endIndex,
+			splitIndex//split axis
+			);
+
+
+	//calc this node bounding box
+
+	btAABB node_bound;
+	node_bound.invalidate();
+
+	for (int i=startIndex;i<endIndex;i++)
+	{
+		node_bound.merge(primitive_boxes[i].m_bound);
+	}
+
+	setNodeBound(curIndex,node_bound);
+
+
+	//build left branch
+	_build_sub_tree(primitive_boxes, startIndex, splitIndex );
+
+
+	//build right branch
+	 _build_sub_tree(primitive_boxes, splitIndex ,endIndex);
+
+	m_node_array[curIndex].setEscapeIndex(m_num_nodes - curIndex);
+
+
+}
+
+//! stackless build tree
+void btQuantizedBvhTree::build_tree(
+	GIM_BVH_DATA_ARRAY & primitive_boxes)
+{
+	calc_quantization(primitive_boxes);
+	// initialize node count to 0
+	m_num_nodes = 0;
+	// allocate nodes
+	m_node_array.resize(primitive_boxes.size()*2);
+
+	_build_sub_tree(primitive_boxes, 0, primitive_boxes.size());
+}
+
+////////////////////////////////////class btGImpactQuantizedBvh
+
+void btGImpactQuantizedBvh::refit()
+{
+	int nodecount = getNodeCount();
+	while(nodecount--)
+	{
+		if(isLeafNode(nodecount))
+		{
+			btAABB leafbox;
+			m_primitive_manager->get_primitive_box(getNodeData(nodecount),leafbox);
+			setNodeBound(nodecount,leafbox);
+		}
+		else
+		{
+			//const GIM_BVH_TREE_NODE * nodepointer = get_node_pointer(nodecount);
+			//get left bound
+			btAABB bound;
+			bound.invalidate();
+
+			btAABB temp_box;
+
+			int child_node = getLeftNode(nodecount);
+			if(child_node)
+			{
+				getNodeBound(child_node,temp_box);
+				bound.merge(temp_box);
+			}
+
+			child_node = getRightNode(nodecount);
+			if(child_node)
+			{
+				getNodeBound(child_node,temp_box);
+				bound.merge(temp_box);
+			}
+
+			setNodeBound(nodecount,bound);
+		}
+	}
+}
+
+//! this rebuild the entire set
+void btGImpactQuantizedBvh::buildSet()
+{
+	//obtain primitive boxes
+	GIM_BVH_DATA_ARRAY primitive_boxes;
+	primitive_boxes.resize(m_primitive_manager->get_primitive_count());
+
+	for (int i = 0;i<primitive_boxes.size() ;i++ )
+	{
+		 m_primitive_manager->get_primitive_box(i,primitive_boxes[i].m_bound);
+		 primitive_boxes[i].m_data = i;
+	}
+
+	m_box_tree.build_tree(primitive_boxes);
+}
+
+//! returns the indices of the primitives in the m_primitive_manager
+bool btGImpactQuantizedBvh::boxQuery(const btAABB & box, btAlignedObjectArray<int> & collided_results) const
+{
+	int curIndex = 0;
+	int numNodes = getNodeCount();
+
+	//quantize box
+
+	unsigned short quantizedMin[3];
+	unsigned short quantizedMax[3];
+
+	m_box_tree.quantizePoint(quantizedMin,box.m_min);
+	m_box_tree.quantizePoint(quantizedMax,box.m_max);
+
+
+	while (curIndex < numNodes)
+	{
+
+		//catch bugs in tree data
+
+		bool aabbOverlap = m_box_tree.testQuantizedBoxOverlapp(curIndex, quantizedMin,quantizedMax);
+		bool isleafnode = isLeafNode(curIndex);
+
+		if (isleafnode && aabbOverlap)
+		{
+			collided_results.push_back(getNodeData(curIndex));
+		}
+
+		if (aabbOverlap || isleafnode)
+		{
+			//next subnode
+			curIndex++;
+		}
+		else
+		{
+			//skip node
+			curIndex+= getEscapeNodeIndex(curIndex);
+		}
+	}
+	if(collided_results.size()>0) return true;
+	return false;
+}
+
+
+
+//! returns the indices of the primitives in the m_primitive_manager
+bool btGImpactQuantizedBvh::rayQuery(
+	const btVector3 & ray_dir,const btVector3 & ray_origin ,
+	btAlignedObjectArray<int> & collided_results) const
+{
+	int curIndex = 0;
+	int numNodes = getNodeCount();
+
+	while (curIndex < numNodes)
+	{
+		btAABB bound;
+		getNodeBound(curIndex,bound);
+
+		//catch bugs in tree data
+
+		bool aabbOverlap = bound.collide_ray(ray_origin,ray_dir);
+		bool isleafnode = isLeafNode(curIndex);
+
+		if (isleafnode && aabbOverlap)
+		{
+			collided_results.push_back(getNodeData( curIndex));
+		}
+
+		if (aabbOverlap || isleafnode)
+		{
+			//next subnode
+			curIndex++;
+		}
+		else
+		{
+			//skip node
+			curIndex+= getEscapeNodeIndex(curIndex);
+		}
+	}
+	if(collided_results.size()>0) return true;
+	return false;
+}
+
+
+SIMD_FORCE_INLINE bool _quantized_node_collision(
+	btGImpactQuantizedBvh * boxset0, btGImpactQuantizedBvh * boxset1,
+	const BT_BOX_BOX_TRANSFORM_CACHE & trans_cache_1to0,
+	int node0 ,int node1, bool complete_primitive_tests)
+{
+	btAABB box0;
+	boxset0->getNodeBound(node0,box0);
+	btAABB box1;
+	boxset1->getNodeBound(node1,box1);
+
+	return box0.overlapping_trans_cache(box1,trans_cache_1to0,complete_primitive_tests );
+//	box1.appy_transform_trans_cache(trans_cache_1to0);
+//	return box0.has_collision(box1);
+
+}
+
+
+//stackless recursive collision routine
+static void _find_quantized_collision_pairs_recursive(
+	btGImpactQuantizedBvh * boxset0, btGImpactQuantizedBvh * boxset1,
+	btPairSet * collision_pairs,
+	const BT_BOX_BOX_TRANSFORM_CACHE & trans_cache_1to0,
+	int node0, int node1, bool complete_primitive_tests)
+{
+
+
+
+	if( _quantized_node_collision(
+		boxset0,boxset1,trans_cache_1to0,
+		node0,node1,complete_primitive_tests) ==false) return;//avoid colliding internal nodes
+
+	if(boxset0->isLeafNode(node0))
+	{
+		if(boxset1->isLeafNode(node1))
+		{
+			// collision result
+			collision_pairs->push_pair(
+				boxset0->getNodeData(node0),boxset1->getNodeData(node1));
+			return;
+		}
+		else
+		{
+
+			//collide left recursive
+
+			_find_quantized_collision_pairs_recursive(
+								boxset0,boxset1,
+								collision_pairs,trans_cache_1to0,
+								node0,boxset1->getLeftNode(node1),false);
+
+			//collide right recursive
+			_find_quantized_collision_pairs_recursive(
+								boxset0,boxset1,
+								collision_pairs,trans_cache_1to0,
+								node0,boxset1->getRightNode(node1),false);
+
+
+		}
+	}
+	else
+	{
+		if(boxset1->isLeafNode(node1))
+		{
+
+			//collide left recursive
+			_find_quantized_collision_pairs_recursive(
+								boxset0,boxset1,
+								collision_pairs,trans_cache_1to0,
+								boxset0->getLeftNode(node0),node1,false);
+
+
+			//collide right recursive
+
+			_find_quantized_collision_pairs_recursive(
+								boxset0,boxset1,
+								collision_pairs,trans_cache_1to0,
+								boxset0->getRightNode(node0),node1,false);
+
+
+		}
+		else
+		{
+			//collide left0 left1
+
+
+
+			_find_quantized_collision_pairs_recursive(
+				boxset0,boxset1,
+				collision_pairs,trans_cache_1to0,
+				boxset0->getLeftNode(node0),boxset1->getLeftNode(node1),false);
+
+			//collide left0 right1
+
+			_find_quantized_collision_pairs_recursive(
+				boxset0,boxset1,
+				collision_pairs,trans_cache_1to0,
+				boxset0->getLeftNode(node0),boxset1->getRightNode(node1),false);
+
+
+			//collide right0 left1
+
+			_find_quantized_collision_pairs_recursive(
+				boxset0,boxset1,
+				collision_pairs,trans_cache_1to0,
+				boxset0->getRightNode(node0),boxset1->getLeftNode(node1),false);
+
+			//collide right0 right1
+
+			_find_quantized_collision_pairs_recursive(
+				boxset0,boxset1,
+				collision_pairs,trans_cache_1to0,
+				boxset0->getRightNode(node0),boxset1->getRightNode(node1),false);
+
+		}// else if node1 is not a leaf
+	}// else if node0 is not a leaf
+}
+
+
+void btGImpactQuantizedBvh::find_collision(btGImpactQuantizedBvh * boxset0, const btTransform & trans0,
+		btGImpactQuantizedBvh * boxset1, const btTransform & trans1,
+		btPairSet & collision_pairs)
+{
+
+	if(boxset0->getNodeCount()==0 || boxset1->getNodeCount()==0 ) return;
+
+	BT_BOX_BOX_TRANSFORM_CACHE trans_cache_1to0;
+
+	trans_cache_1to0.calc_from_homogenic(trans0,trans1);
+
+#ifdef TRI_COLLISION_PROFILING
+	bt_begin_gim02_q_tree_time();
+#endif //TRI_COLLISION_PROFILING
+
+	_find_quantized_collision_pairs_recursive(
+		boxset0,boxset1,
+		&collision_pairs,trans_cache_1to0,0,0,true);
+#ifdef TRI_COLLISION_PROFILING
+	bt_end_gim02_q_tree_time();
+#endif //TRI_COLLISION_PROFILING
+
+}
+
+
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactQuantizedBvh.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactQuantizedBvh.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactQuantizedBvh.h	(revision 2431)
@@ -0,0 +1,372 @@
+#ifndef GIM_QUANTIZED_SET_H_INCLUDED
+#define GIM_QUANTIZED_SET_H_INCLUDED
+
+/*! \file btGImpactQuantizedBvh.h
+\author Francisco Len Nßjera
+*/
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "btGImpactBvh.h"
+#include "btQuantization.h"
+
+
+
+
+
+///btQuantizedBvhNode is a compressed aabb node, 16 bytes.
+///Node can be used for leafnode or internal node. Leafnodes can point to 32-bit triangle index (non-negative range).
+ATTRIBUTE_ALIGNED16	(struct) BT_QUANTIZED_BVH_NODE
+{
+	//12 bytes
+	unsigned short int	m_quantizedAabbMin[3];
+	unsigned short int	m_quantizedAabbMax[3];
+	//4 bytes
+	int	m_escapeIndexOrDataIndex;
+
+	BT_QUANTIZED_BVH_NODE()
+	{
+		m_escapeIndexOrDataIndex = 0;
+	}
+
+	SIMD_FORCE_INLINE bool isLeafNode() const
+	{
+		//skipindex is negative (internal node), triangleindex >=0 (leafnode)
+		return (m_escapeIndexOrDataIndex>=0);
+	}
+
+	SIMD_FORCE_INLINE int getEscapeIndex() const
+	{
+		//btAssert(m_escapeIndexOrDataIndex < 0);
+		return -m_escapeIndexOrDataIndex;
+	}
+
+	SIMD_FORCE_INLINE void setEscapeIndex(int index)
+	{
+		m_escapeIndexOrDataIndex = -index;
+	}
+
+	SIMD_FORCE_INLINE int getDataIndex() const
+	{
+		//btAssert(m_escapeIndexOrDataIndex >= 0);
+
+		return m_escapeIndexOrDataIndex;
+	}
+
+	SIMD_FORCE_INLINE void setDataIndex(int index)
+	{
+		m_escapeIndexOrDataIndex = index;
+	}
+
+	SIMD_FORCE_INLINE bool testQuantizedBoxOverlapp(
+		unsigned short * quantizedMin,unsigned short * quantizedMax) const
+	{
+		if(m_quantizedAabbMin[0] > quantizedMax[0] ||
+		   m_quantizedAabbMax[0] < quantizedMin[0] ||
+		   m_quantizedAabbMin[1] > quantizedMax[1] ||
+		   m_quantizedAabbMax[1] < quantizedMin[1] ||
+		   m_quantizedAabbMin[2] > quantizedMax[2] ||
+		   m_quantizedAabbMax[2] < quantizedMin[2])
+		{
+			return false;
+		}
+		return true;
+	}
+
+};
+
+
+
+class GIM_QUANTIZED_BVH_NODE_ARRAY:public btAlignedObjectArray<BT_QUANTIZED_BVH_NODE>
+{
+};
+
+
+
+
+//! Basic Box tree structure
+class btQuantizedBvhTree
+{
+protected:
+	int m_num_nodes;
+	GIM_QUANTIZED_BVH_NODE_ARRAY m_node_array;
+	btAABB m_global_bound;
+	btVector3 m_bvhQuantization;
+protected:
+	void calc_quantization(GIM_BVH_DATA_ARRAY & primitive_boxes, btScalar boundMargin = btScalar(1.0) );
+
+	int _sort_and_calc_splitting_index(
+		GIM_BVH_DATA_ARRAY & primitive_boxes,
+		 int startIndex,  int endIndex, int splitAxis);
+
+	int _calc_splitting_axis(GIM_BVH_DATA_ARRAY & primitive_boxes, int startIndex,  int endIndex);
+
+	void _build_sub_tree(GIM_BVH_DATA_ARRAY & primitive_boxes, int startIndex,  int endIndex);
+public:
+	btQuantizedBvhTree()
+	{
+		m_num_nodes = 0;
+	}
+
+	//! prototype functions for box tree management
+	//!@{
+	void build_tree(GIM_BVH_DATA_ARRAY & primitive_boxes);
+
+	SIMD_FORCE_INLINE void quantizePoint(
+		unsigned short * quantizedpoint, const btVector3 & point) const
+	{
+		bt_quantize_clamp(quantizedpoint,point,m_global_bound.m_min,m_global_bound.m_max,m_bvhQuantization);
+	}
+
+
+	SIMD_FORCE_INLINE bool testQuantizedBoxOverlapp(
+		int node_index,
+		unsigned short * quantizedMin,unsigned short * quantizedMax) const
+	{
+		return m_node_array[node_index].testQuantizedBoxOverlapp(quantizedMin,quantizedMax);
+	}
+
+	SIMD_FORCE_INLINE void clearNodes()
+	{
+		m_node_array.clear();
+		m_num_nodes = 0;
+	}
+
+	//! node count
+	SIMD_FORCE_INLINE int getNodeCount() const
+	{
+		return m_num_nodes;
+	}
+
+	//! tells if the node is a leaf
+	SIMD_FORCE_INLINE bool isLeafNode(int nodeindex) const
+	{
+		return m_node_array[nodeindex].isLeafNode();
+	}
+
+	SIMD_FORCE_INLINE int getNodeData(int nodeindex) const
+	{
+		return m_node_array[nodeindex].getDataIndex();
+	}
+
+	SIMD_FORCE_INLINE void getNodeBound(int nodeindex, btAABB & bound) const
+	{
+		bound.m_min = bt_unquantize(
+			m_node_array[nodeindex].m_quantizedAabbMin,
+			m_global_bound.m_min,m_bvhQuantization);
+
+		bound.m_max = bt_unquantize(
+			m_node_array[nodeindex].m_quantizedAabbMax,
+			m_global_bound.m_min,m_bvhQuantization);
+	}
+
+	SIMD_FORCE_INLINE void setNodeBound(int nodeindex, const btAABB & bound)
+	{
+		bt_quantize_clamp(	m_node_array[nodeindex].m_quantizedAabbMin,
+							bound.m_min,
+							m_global_bound.m_min,
+							m_global_bound.m_max,
+							m_bvhQuantization);
+
+		bt_quantize_clamp(	m_node_array[nodeindex].m_quantizedAabbMax,
+							bound.m_max,
+							m_global_bound.m_min,
+							m_global_bound.m_max,
+							m_bvhQuantization);
+	}
+
+	SIMD_FORCE_INLINE int getLeftNode(int nodeindex) const
+	{
+		return nodeindex+1;
+	}
+
+	SIMD_FORCE_INLINE int getRightNode(int nodeindex) const
+	{
+		if(m_node_array[nodeindex+1].isLeafNode()) return nodeindex+2;
+		return nodeindex+1 + m_node_array[nodeindex+1].getEscapeIndex();
+	}
+
+	SIMD_FORCE_INLINE int getEscapeNodeIndex(int nodeindex) const
+	{
+		return m_node_array[nodeindex].getEscapeIndex();
+	}
+
+	SIMD_FORCE_INLINE const BT_QUANTIZED_BVH_NODE * get_node_pointer(int index = 0) const
+	{
+		return &m_node_array[index];
+	}
+
+	//!@}
+};
+
+
+
+//! Structure for containing Boxes
+/*!
+This class offers an structure for managing a box tree of primitives.
+Requires a Primitive prototype (like btPrimitiveManagerBase )
+*/
+class btGImpactQuantizedBvh
+{
+protected:
+	btQuantizedBvhTree m_box_tree;
+	btPrimitiveManagerBase * m_primitive_manager;
+
+protected:
+	//stackless refit
+	void refit();
+public:
+
+	//! this constructor doesn't build the tree. you must call	buildSet
+	btGImpactQuantizedBvh()
+	{
+		m_primitive_manager = NULL;
+	}
+
+	//! this constructor doesn't build the tree. you must call	buildSet
+	btGImpactQuantizedBvh(btPrimitiveManagerBase * primitive_manager)
+	{
+		m_primitive_manager = primitive_manager;
+	}
+
+	SIMD_FORCE_INLINE btAABB getGlobalBox()  const
+	{
+		btAABB totalbox;
+		getNodeBound(0, totalbox);
+		return totalbox;
+	}
+
+	SIMD_FORCE_INLINE void setPrimitiveManager(btPrimitiveManagerBase * primitive_manager)
+	{
+		m_primitive_manager = primitive_manager;
+	}
+
+	SIMD_FORCE_INLINE btPrimitiveManagerBase * getPrimitiveManager() const
+	{
+		return m_primitive_manager;
+	}
+
+
+//! node manager prototype functions
+///@{
+
+	//! this attemps to refit the box set.
+	SIMD_FORCE_INLINE void update()
+	{
+		refit();
+	}
+
+	//! this rebuild the entire set
+	void buildSet();
+
+	//! returns the indices of the primitives in the m_primitive_manager
+	bool boxQuery(const btAABB & box, btAlignedObjectArray<int> & collided_results) const;
+
+	//! returns the indices of the primitives in the m_primitive_manager
+	SIMD_FORCE_INLINE bool boxQueryTrans(const btAABB & box,
+		 const btTransform & transform, btAlignedObjectArray<int> & collided_results) const
+	{
+		btAABB transbox=box;
+		transbox.appy_transform(transform);
+		return boxQuery(transbox,collided_results);
+	}
+
+	//! returns the indices of the primitives in the m_primitive_manager
+	bool rayQuery(
+		const btVector3 & ray_dir,const btVector3 & ray_origin ,
+		btAlignedObjectArray<int> & collided_results) const;
+
+	//! tells if this set has hierarcht
+	SIMD_FORCE_INLINE bool hasHierarchy() const
+	{
+		return true;
+	}
+
+	//! tells if this set is a trimesh
+	SIMD_FORCE_INLINE bool isTrimesh()  const
+	{
+		return m_primitive_manager->is_trimesh();
+	}
+
+	//! node count
+	SIMD_FORCE_INLINE int getNodeCount() const
+	{
+		return m_box_tree.getNodeCount();
+	}
+
+	//! tells if the node is a leaf
+	SIMD_FORCE_INLINE bool isLeafNode(int nodeindex) const
+	{
+		return m_box_tree.isLeafNode(nodeindex);
+	}
+
+	SIMD_FORCE_INLINE int getNodeData(int nodeindex) const
+	{
+		return m_box_tree.getNodeData(nodeindex);
+	}
+
+	SIMD_FORCE_INLINE void getNodeBound(int nodeindex, btAABB & bound)  const
+	{
+		m_box_tree.getNodeBound(nodeindex, bound);
+	}
+
+	SIMD_FORCE_INLINE void setNodeBound(int nodeindex, const btAABB & bound)
+	{
+		m_box_tree.setNodeBound(nodeindex, bound);
+	}
+
+
+	SIMD_FORCE_INLINE int getLeftNode(int nodeindex) const
+	{
+		return m_box_tree.getLeftNode(nodeindex);
+	}
+
+	SIMD_FORCE_INLINE int getRightNode(int nodeindex) const
+	{
+		return m_box_tree.getRightNode(nodeindex);
+	}
+
+	SIMD_FORCE_INLINE int getEscapeNodeIndex(int nodeindex) const
+	{
+		return m_box_tree.getEscapeNodeIndex(nodeindex);
+	}
+
+	SIMD_FORCE_INLINE void getNodeTriangle(int nodeindex,btPrimitiveTriangle & triangle) const
+	{
+		m_primitive_manager->get_primitive_triangle(getNodeData(nodeindex),triangle);
+	}
+
+
+	SIMD_FORCE_INLINE const BT_QUANTIZED_BVH_NODE * get_node_pointer(int index = 0) const
+	{
+		return m_box_tree.get_node_pointer(index);
+	}
+
+
+	static float getAverageTreeCollisionTime();
+
+
+	static void find_collision(btGImpactQuantizedBvh * boxset1, const btTransform & trans1,
+		btGImpactQuantizedBvh * boxset2, const btTransform & trans2,
+		btPairSet & collision_pairs);
+};
+
+
+#endif // GIM_BOXPRUNING_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactShape.cpp
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactShape.cpp	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactShape.cpp	(revision 2431)
@@ -0,0 +1,183 @@
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+
+#include "btGImpactShape.h"
+#include "btGImpactMassUtil.h"
+
+
+#define CALC_EXACT_INERTIA 1
+
+void btGImpactCompoundShape::calculateLocalInertia(btScalar mass,btVector3& inertia) const
+{
+	lockChildShapes();
+#ifdef CALC_EXACT_INERTIA
+	inertia.setValue(0.f,0.f,0.f);
+
+	int i = this->getNumChildShapes();
+	btScalar shapemass = mass/btScalar(i);
+
+	while(i--)
+	{
+		btVector3 temp_inertia;
+		m_childShapes[i]->calculateLocalInertia(shapemass,temp_inertia);
+		if(childrenHasTransform())
+		{
+			inertia = gim_inertia_add_transformed( inertia,temp_inertia,m_childTransforms[i]);
+		}
+		else
+		{
+			inertia = gim_inertia_add_transformed( inertia,temp_inertia,btTransform::getIdentity());
+		}
+
+	}
+
+#else
+
+	// Calc box inertia
+
+	btScalar lx= m_localAABB.m_max[0] - m_localAABB.m_min[0];
+	btScalar ly= m_localAABB.m_max[1] - m_localAABB.m_min[1];
+	btScalar lz= m_localAABB.m_max[2] - m_localAABB.m_min[2];
+	const btScalar x2 = lx*lx;
+	const btScalar y2 = ly*ly;
+	const btScalar z2 = lz*lz;
+	const btScalar scaledmass = mass * btScalar(0.08333333);
+
+	inertia = scaledmass * (btVector3(y2+z2,x2+z2,x2+y2));
+
+#endif
+	unlockChildShapes();
+}
+
+
+
+void btGImpactMeshShapePart::calculateLocalInertia(btScalar mass,btVector3& inertia) const
+{
+	lockChildShapes();
+
+
+#ifdef CALC_EXACT_INERTIA
+	inertia.setValue(0.f,0.f,0.f);
+
+	int i = this->getVertexCount();
+	btScalar pointmass = mass/btScalar(i);
+
+	while(i--)
+	{
+		btVector3 pointintertia;
+		this->getVertex(i,pointintertia);
+		pointintertia = gim_get_point_inertia(pointintertia,pointmass);
+		inertia+=pointintertia;
+	}
+
+#else
+
+	// Calc box inertia
+
+	btScalar lx= m_localAABB.m_max[0] - m_localAABB.m_min[0];
+	btScalar ly= m_localAABB.m_max[1] - m_localAABB.m_min[1];
+	btScalar lz= m_localAABB.m_max[2] - m_localAABB.m_min[2];
+	const btScalar x2 = lx*lx;
+	const btScalar y2 = ly*ly;
+	const btScalar z2 = lz*lz;
+	const btScalar scaledmass = mass * btScalar(0.08333333);
+
+	inertia = scaledmass * (btVector3(y2+z2,x2+z2,x2+y2));
+
+#endif
+
+	unlockChildShapes();
+}
+
+void btGImpactMeshShape::calculateLocalInertia(btScalar mass,btVector3& inertia) const
+{
+
+#ifdef CALC_EXACT_INERTIA
+	inertia.setValue(0.f,0.f,0.f);
+
+	int i = this->getMeshPartCount();
+	btScalar partmass = mass/btScalar(i);
+
+	while(i--)
+	{
+		btVector3 partinertia;
+		getMeshPart(i)->calculateLocalInertia(partmass,partinertia);
+		inertia+=partinertia;
+	}
+
+#else
+
+	// Calc box inertia
+
+	btScalar lx= m_localAABB.m_max[0] - m_localAABB.m_min[0];
+	btScalar ly= m_localAABB.m_max[1] - m_localAABB.m_min[1];
+	btScalar lz= m_localAABB.m_max[2] - m_localAABB.m_min[2];
+	const btScalar x2 = lx*lx;
+	const btScalar y2 = ly*ly;
+	const btScalar z2 = lz*lz;
+	const btScalar scaledmass = mass * btScalar(0.08333333);
+
+	inertia = scaledmass * (btVector3(y2+z2,x2+z2,x2+y2));
+
+#endif
+}
+
+void btGImpactMeshShape::rayTest(const btVector3& rayFrom, const btVector3& rayTo, btCollisionWorld::RayResultCallback& resultCallback) const
+{
+}
+
+
+void btGImpactMeshShapePart::processAllTriangles(btTriangleCallback* callback,const btVector3& aabbMin,const btVector3& aabbMax) const
+{
+	lockChildShapes();
+	btAABB box;
+	box.m_min = aabbMin;
+	box.m_max = aabbMax;
+
+	btAlignedObjectArray<int> collided;
+	m_box_set.boxQuery(box,collided);
+
+	if(collided.size()==0)
+	{
+		unlockChildShapes();
+		return;
+	}
+
+	int part = (int)getPart();
+	btPrimitiveTriangle triangle;
+	int i = collided.size();
+	while(i--)
+	{
+		this->getPrimitiveTriangle(collided[i],triangle);
+		callback->processTriangle(triangle.m_vertices,part,collided[i]);
+	}
+	unlockChildShapes();
+
+}
+
+void btGImpactMeshShape::processAllTriangles(btTriangleCallback* callback,const btVector3& aabbMin,const btVector3& aabbMax) const
+{
+	int i = m_mesh_parts.size();
+	while(i--)
+	{
+		m_mesh_parts[i]->processAllTriangles(callback,aabbMin,aabbMax);
+	}
+}
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactShape.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactShape.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGImpactShape.h	(revision 2431)
@@ -0,0 +1,1110 @@
+/*! \file btGImpactShape.h
+\author Francisco Len Nßjera
+*/
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+
+#ifndef GIMPACT_SHAPE_H
+#define GIMPACT_SHAPE_H
+
+#include "BulletCollision/CollisionShapes/btCollisionShape.h"
+#include "BulletCollision/CollisionShapes/btTriangleShape.h"
+#include "BulletCollision/CollisionShapes/btStridingMeshInterface.h"
+#include "BulletCollision/CollisionShapes/btCollisionMargin.h"
+#include "BulletCollision/CollisionDispatch/btCollisionWorld.h"
+#include "BulletCollision/CollisionShapes/btConcaveShape.h"
+#include "BulletCollision/CollisionShapes/btTetrahedronShape.h"
+#include "LinearMath/btVector3.h"
+#include "LinearMath/btTransform.h"
+#include "LinearMath/btMatrix3x3.h"
+#include "LinearMath/btAlignedObjectArray.h"
+
+#include "btGImpactQuantizedBvh.h" // box tree class
+
+
+//! declare Quantized trees, (you can change to float based trees)
+typedef btGImpactQuantizedBvh btGImpactBoxSet;
+
+enum eGIMPACT_SHAPE_TYPE
+{
+	CONST_GIMPACT_COMPOUND_SHAPE = 0,
+	CONST_GIMPACT_TRIMESH_SHAPE_PART,
+	CONST_GIMPACT_TRIMESH_SHAPE
+};
+
+
+//! Helper class for tetrahedrons
+class btTetrahedronShapeEx:public btBU_Simplex1to4
+{
+public:
+	btTetrahedronShapeEx()
+	{
+		m_numVertices = 4;
+	}
+
+
+	SIMD_FORCE_INLINE void setVertices(
+		const btVector3 & v0,const btVector3 & v1,
+		const btVector3 & v2,const btVector3 & v3)
+	{
+		m_vertices[0] = v0;
+		m_vertices[1] = v1;
+		m_vertices[2] = v2;
+		m_vertices[3] = v3;
+		recalcLocalAabb();
+	}
+};
+
+
+//! Base class for gimpact shapes
+class btGImpactShapeInterface : public btConcaveShape
+{
+protected:
+    btAABB m_localAABB;
+    bool m_needs_update;
+    btVector3  localScaling;
+    btGImpactBoxSet m_box_set;// optionally boxset
+
+	//! use this function for perfofm refit in bounding boxes
+    //! use this function for perfofm refit in bounding boxes
+    virtual void calcLocalAABB()
+    {
+		lockChildShapes();
+    	if(m_box_set.getNodeCount() == 0)
+    	{
+    		m_box_set.buildSet();
+    	}
+    	else
+    	{
+    		m_box_set.update();
+    	}
+    	unlockChildShapes();
+
+    	m_localAABB = m_box_set.getGlobalBox();
+    }
+
+
+public:
+	btGImpactShapeInterface()
+	{
+		m_shapeType=GIMPACT_SHAPE_PROXYTYPE;
+		m_localAABB.invalidate();
+		m_needs_update = true;
+		localScaling.setValue(1.f,1.f,1.f);
+	}
+
+
+	//! performs refit operation
+	/*!
+	Updates the entire Box set of this shape.
+	\pre postUpdate() must be called for attemps to calculating the box set, else this function
+		will does nothing.
+	\post if m_needs_update == true, then it calls calcLocalAABB();
+	*/
+    SIMD_FORCE_INLINE void updateBound()
+    {
+    	if(!m_needs_update) return;
+    	calcLocalAABB();
+    	m_needs_update  = false;
+    }
+
+    //! If the Bounding box is not updated, then this class attemps to calculate it.
+    /*!
+    \post Calls updateBound() for update the box set.
+    */
+    void getAabb(const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const
+    {
+        btAABB transformedbox = m_localAABB;
+        transformedbox.appy_transform(t);
+        aabbMin = transformedbox.m_min;
+        aabbMax = transformedbox.m_max;
+    }
+
+    //! Tells to this object that is needed to refit the box set
+    virtual void postUpdate()
+    {
+    	m_needs_update = true;
+    }
+
+	//! Obtains the local box, which is the global calculated box of the total of subshapes
+	SIMD_FORCE_INLINE const btAABB & getLocalBox()
+	{
+		return m_localAABB;
+	}
+
+
+    virtual int	getShapeType() const
+    {
+        return GIMPACT_SHAPE_PROXYTYPE;
+    }
+
+    /*!
+	\post You must call updateBound() for update the box set.
+	*/
+	virtual void	setLocalScaling(const btVector3& scaling)
+	{
+		localScaling = scaling;
+		postUpdate();
+	}
+
+	virtual const btVector3& getLocalScaling() const
+	{
+		return localScaling;
+	}
+
+
+	virtual void setMargin(btScalar margin)
+    {
+    	m_collisionMargin = margin;
+    	int i = getNumChildShapes();
+    	while(i--)
+    	{
+			btCollisionShape* child = getChildShape(i);
+			child->setMargin(margin);
+    	}
+
+		m_needs_update = true;
+    }
+
+
+	//! Subshape member functions
+	//!@{
+
+	//! Base method for determinig which kind of GIMPACT shape we get
+	virtual eGIMPACT_SHAPE_TYPE getGImpactShapeType() = 0;
+
+	//! gets boxset
+	SIMD_FORCE_INLINE btGImpactBoxSet * getBoxSet()
+	{
+		return &m_box_set;
+	}
+
+	//! Determines if this class has a hierarchy structure for sorting its primitives
+	SIMD_FORCE_INLINE bool hasBoxSet()  const
+	{
+		if(m_box_set.getNodeCount() == 0) return false;
+		return true;
+	}
+
+	//! Obtains the primitive manager
+	virtual const btPrimitiveManagerBase * getPrimitiveManager()  const = 0;
+
+
+	//! Gets the number of children
+	virtual int	getNumChildShapes() const  = 0;
+
+	//! if true, then its children must get transforms.
+	virtual bool childrenHasTransform() const = 0;
+
+	//! Determines if this shape has triangles
+	virtual bool needsRetrieveTriangles() const = 0;
+
+	//! Determines if this shape has tetrahedrons
+	virtual bool needsRetrieveTetrahedrons() const = 0;
+
+	virtual void getBulletTriangle(int prim_index,btTriangleShapeEx & triangle) const = 0;
+
+	virtual void getBulletTetrahedron(int prim_index,btTetrahedronShapeEx & tetrahedron) const = 0;
+
+
+
+	//! call when reading child shapes
+	virtual void lockChildShapes() const
+	{
+	}
+
+	virtual void unlockChildShapes() const
+	{
+	}
+
+	//! if this trimesh
+	SIMD_FORCE_INLINE void getPrimitiveTriangle(int index,btPrimitiveTriangle & triangle) const
+	{
+		getPrimitiveManager()->get_primitive_triangle(index,triangle);
+	}
+
+
+	//! Retrieves the bound from a child
+    /*!
+    */
+    virtual void getChildAabb(int child_index,const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const
+    {
+        btAABB child_aabb;
+        getPrimitiveManager()->get_primitive_box(child_index,child_aabb);
+        child_aabb.appy_transform(t);
+        aabbMin = child_aabb.m_min;
+        aabbMax = child_aabb.m_max;
+    }
+
+	//! Gets the children
+	virtual btCollisionShape* getChildShape(int index) = 0;
+
+
+	//! Gets the child
+	virtual const btCollisionShape* getChildShape(int index) const = 0;
+
+	//! Gets the children transform
+	virtual btTransform	getChildTransform(int index) const = 0;
+
+	//! Sets the children transform
+	/*!
+	\post You must call updateBound() for update the box set.
+	*/
+	virtual void setChildTransform(int index, const btTransform & transform) = 0;
+
+	//!@}
+
+
+	//! virtual method for ray collision
+	virtual void rayTest(const btVector3& rayFrom, const btVector3& rayTo, btCollisionWorld::RayResultCallback& resultCallback)  const
+	{
+	}
+
+	//! Function for retrieve triangles.
+	/*!
+	It gives the triangles in local space
+	*/
+	virtual void	processAllTriangles(btTriangleCallback* callback,const btVector3& aabbMin,const btVector3& aabbMax) const
+	{
+	}
+
+	//!@}
+
+};
+
+
+//! btGImpactCompoundShape allows to handle multiple btCollisionShape objects at once
+/*!
+This class only can manage Convex subshapes
+*/
+class btGImpactCompoundShape	: public btGImpactShapeInterface
+{
+public:
+	//! compound primitive manager
+	class CompoundPrimitiveManager:public btPrimitiveManagerBase
+	{
+	public:
+		btGImpactCompoundShape * m_compoundShape;
+
+
+		CompoundPrimitiveManager(const CompoundPrimitiveManager& compound)
+		{
+			m_compoundShape = compound.m_compoundShape;
+		}
+
+		CompoundPrimitiveManager(btGImpactCompoundShape * compoundShape)
+		{
+			m_compoundShape = compoundShape;
+		}
+
+		CompoundPrimitiveManager()
+		{
+			m_compoundShape = NULL;
+		}
+
+		virtual bool is_trimesh() const
+		{
+			return false;
+		}
+
+		virtual int get_primitive_count() const
+		{
+			return (int )m_compoundShape->getNumChildShapes();
+		}
+
+		virtual void get_primitive_box(int prim_index ,btAABB & primbox) const
+		{
+			btTransform prim_trans;
+			if(m_compoundShape->childrenHasTransform())
+			{
+				prim_trans = m_compoundShape->getChildTransform(prim_index);
+			}
+			else
+			{
+				prim_trans.setIdentity();
+			}
+			const btCollisionShape* shape = m_compoundShape->getChildShape(prim_index);
+			shape->getAabb(prim_trans,primbox.m_min,primbox.m_max);
+		}
+
+		virtual void get_primitive_triangle(int prim_index,btPrimitiveTriangle & triangle) const
+		{
+			btAssert(0);
+		}
+
+	};
+
+
+
+protected:
+	CompoundPrimitiveManager m_primitive_manager;
+	btAlignedObjectArray<btTransform>		m_childTransforms;
+	btAlignedObjectArray<btCollisionShape*>	m_childShapes;
+
+
+public:
+
+	btGImpactCompoundShape(bool children_has_transform = true)
+	{
+		m_primitive_manager.m_compoundShape = this;
+		m_box_set.setPrimitiveManager(&m_primitive_manager);
+	}
+
+	virtual ~btGImpactCompoundShape()
+	{
+	}
+
+
+	//! if true, then its children must get transforms.
+	virtual bool childrenHasTransform() const
+	{
+		if(m_childTransforms.size()==0) return false;
+		return true;
+	}
+
+
+	//! Obtains the primitive manager
+	virtual const btPrimitiveManagerBase * getPrimitiveManager()  const
+	{
+		return &m_primitive_manager;
+	}
+
+	//! Obtains the compopund primitive manager
+	SIMD_FORCE_INLINE CompoundPrimitiveManager * getCompoundPrimitiveManager()
+	{
+		return &m_primitive_manager;
+	}
+
+	//! Gets the number of children
+	virtual int	getNumChildShapes() const
+	{
+		return m_childShapes.size();
+	}
+
+
+	//! Use this method for adding children. Only Convex shapes are allowed.
+	void addChildShape(const btTransform& localTransform,btCollisionShape* shape)
+	{
+		btAssert(shape->isConvex());
+		m_childTransforms.push_back(localTransform);
+		m_childShapes.push_back(shape);
+	}
+
+	//! Use this method for adding children. Only Convex shapes are allowed.
+	void addChildShape(btCollisionShape* shape)
+	{
+		btAssert(shape->isConvex());
+		m_childShapes.push_back(shape);
+	}
+
+	//! Gets the children
+	virtual btCollisionShape* getChildShape(int index)
+	{
+		return m_childShapes[index];
+	}
+
+	//! Gets the children
+	virtual const btCollisionShape* getChildShape(int index) const
+	{
+		return m_childShapes[index];
+	}
+
+	//! Retrieves the bound from a child
+    /*!
+    */
+    virtual void getChildAabb(int child_index,const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const
+    {
+
+    	if(childrenHasTransform())
+    	{
+    		m_childShapes[child_index]->getAabb(t*m_childTransforms[child_index],aabbMin,aabbMax);
+    	}
+    	else
+    	{
+    		m_childShapes[child_index]->getAabb(t,aabbMin,aabbMax);
+    	}
+    }
+
+
+	//! Gets the children transform
+	virtual btTransform	getChildTransform(int index) const
+	{
+		btAssert(m_childTransforms.size() == m_childShapes.size());
+		return m_childTransforms[index];
+	}
+
+	//! Sets the children transform
+	/*!
+	\post You must call updateBound() for update the box set.
+	*/
+	virtual void setChildTransform(int index, const btTransform & transform)
+	{
+		btAssert(m_childTransforms.size() == m_childShapes.size());
+		m_childTransforms[index] = transform;
+		postUpdate();
+	}
+
+	//! Determines if this shape has triangles
+	virtual bool needsRetrieveTriangles() const
+	{
+		return false;
+	}
+
+	//! Determines if this shape has tetrahedrons
+	virtual bool needsRetrieveTetrahedrons() const
+	{
+		return false;
+	}
+
+
+	virtual void getBulletTriangle(int prim_index,btTriangleShapeEx & triangle) const
+	{
+		btAssert(0);
+	}
+
+	virtual void getBulletTetrahedron(int prim_index,btTetrahedronShapeEx & tetrahedron) const
+	{
+		btAssert(0);
+	}
+
+
+	//! Calculates the exact inertia tensor for this shape
+	virtual void	calculateLocalInertia(btScalar mass,btVector3& inertia) const;
+
+	virtual const char*	getName()const
+	{
+		return "GImpactCompound";
+	}
+
+	virtual eGIMPACT_SHAPE_TYPE getGImpactShapeType()
+	{
+		return CONST_GIMPACT_COMPOUND_SHAPE;
+	}
+
+};
+
+
+
+//! This class manages a sub part of a mesh supplied by the btStridingMeshInterface interface.
+/*!
+- Simply create this shape by passing the btStridingMeshInterface to the constructor btGImpactMeshShapePart, then you must call updateBound() after creating the mesh
+- When making operations with this shape, you must call <b>lock</b> before accessing to the trimesh primitives, and then call <b>unlock</b>
+- You can handle deformable meshes with this shape, by calling postUpdate() every time when changing the mesh vertices.
+
+*/
+class btGImpactMeshShapePart : public btGImpactShapeInterface
+{
+public:
+	//! Trimesh primitive manager
+	/*!
+	Manages the info from btStridingMeshInterface object and controls the Lock/Unlock mechanism
+	*/
+	class TrimeshPrimitiveManager:public btPrimitiveManagerBase
+	{
+	public:
+		btScalar m_margin;
+		btStridingMeshInterface * m_meshInterface;
+		btVector3 m_scale;
+		int m_part;
+		int m_lock_count;
+		const unsigned char *vertexbase;
+		int numverts;
+		PHY_ScalarType type;
+		int stride;
+		const unsigned char *indexbase;
+		int indexstride;
+		int  numfaces;
+		PHY_ScalarType indicestype;
+
+		TrimeshPrimitiveManager()
+		{
+			m_meshInterface = NULL;
+			m_part = 0;
+			m_margin = 0.01f;
+			m_scale = btVector3(1.f,1.f,1.f);
+			m_lock_count = 0;
+			vertexbase = 0;
+			numverts = 0;
+			stride = 0;
+			indexbase = 0;
+			indexstride = 0;
+			numfaces = 0;
+		}
+
+ 		TrimeshPrimitiveManager(const TrimeshPrimitiveManager & manager)
+		{
+			m_meshInterface = manager.m_meshInterface;
+			m_part = manager.m_part;
+			m_margin = manager.m_margin;
+			m_scale = manager.m_scale;
+			m_lock_count = 0;
+			vertexbase = 0;
+			numverts = 0;
+			stride = 0;
+			indexbase = 0;
+			indexstride = 0;
+			numfaces = 0;
+
+		}
+
+		TrimeshPrimitiveManager(
+			btStridingMeshInterface * meshInterface,	int part)
+		{
+			m_meshInterface = meshInterface;
+			m_part = part;
+			m_scale = m_meshInterface->getScaling();
+			m_margin = 0.1f;
+			m_lock_count = 0;
+			vertexbase = 0;
+			numverts = 0;
+			stride = 0;
+			indexbase = 0;
+			indexstride = 0;
+			numfaces = 0;
+
+		}
+
+
+		void lock()
+		{
+			if(m_lock_count>0)
+			{
+				m_lock_count++;
+				return;
+			}
+			m_meshInterface->getLockedReadOnlyVertexIndexBase(
+				&vertexbase,numverts,
+				type, stride,&indexbase, indexstride, numfaces,indicestype,m_part);
+
+			m_lock_count = 1;
+		}
+
+		void unlock()
+		{
+			if(m_lock_count == 0) return;
+			if(m_lock_count>1)
+			{
+				--m_lock_count;
+				return;
+			}
+			m_meshInterface->unLockReadOnlyVertexBase(m_part);
+			vertexbase = NULL;
+			m_lock_count = 0;
+		}
+
+		virtual bool is_trimesh() const
+		{
+			return true;
+		}
+
+		virtual int get_primitive_count() const
+		{
+			return (int )numfaces;
+		}
+
+		SIMD_FORCE_INLINE int get_vertex_count() const
+		{
+			return (int )numverts;
+		}
+
+		SIMD_FORCE_INLINE void get_indices(int face_index,int &i0,int &i1,int &i2) const
+		{
+			if(indicestype == PHY_SHORT)
+			{
+				short * s_indices = (short *)(indexbase + face_index*indexstride);
+				i0 = s_indices[0];
+				i1 = s_indices[1];
+				i2 = s_indices[2];
+			}
+			else
+			{
+				int * i_indices = (int *)(indexbase + face_index*indexstride);
+				i0 = i_indices[0];
+				i1 = i_indices[1];
+				i2 = i_indices[2];
+			}
+		}
+
+		SIMD_FORCE_INLINE void get_vertex(int vertex_index, btVector3 & vertex) const
+		{
+			if(type == PHY_DOUBLE)
+			{
+				double * dvertices = (double *)(vertexbase + vertex_index*stride);
+				vertex[0] = btScalar(dvertices[0]*m_scale[0]);
+				vertex[1] = btScalar(dvertices[1]*m_scale[1]);
+				vertex[2] = btScalar(dvertices[2]*m_scale[2]);
+			}
+			else
+			{
+				float * svertices = (float *)(vertexbase + vertex_index*stride);
+				vertex[0] = svertices[0]*m_scale[0];
+				vertex[1] = svertices[1]*m_scale[1];
+				vertex[2] = svertices[2]*m_scale[2];
+			}
+		}
+
+		virtual void get_primitive_box(int prim_index ,btAABB & primbox) const
+		{
+			btPrimitiveTriangle  triangle;
+			get_primitive_triangle(prim_index,triangle);
+			primbox.calc_from_triangle_margin(
+				triangle.m_vertices[0],
+				triangle.m_vertices[1],triangle.m_vertices[2],triangle.m_margin);
+		}
+
+		virtual void get_primitive_triangle(int prim_index,btPrimitiveTriangle & triangle) const
+		{
+			int indices[3];
+			get_indices(prim_index,indices[0],indices[1],indices[2]);
+			get_vertex(indices[0],triangle.m_vertices[0]);
+			get_vertex(indices[1],triangle.m_vertices[1]);
+			get_vertex(indices[2],triangle.m_vertices[2]);
+			triangle.m_margin = m_margin;
+		}
+
+		SIMD_FORCE_INLINE void get_bullet_triangle(int prim_index,btTriangleShapeEx & triangle) const
+		{
+			int indices[3];
+			get_indices(prim_index,indices[0],indices[1],indices[2]);
+			get_vertex(indices[0],triangle.m_vertices1[0]);
+			get_vertex(indices[1],triangle.m_vertices1[1]);
+			get_vertex(indices[2],triangle.m_vertices1[2]);
+			triangle.setMargin(m_margin);
+		}
+
+	};
+
+
+protected:
+	TrimeshPrimitiveManager m_primitive_manager;
+public:
+
+	btGImpactMeshShapePart()
+	{
+		m_box_set.setPrimitiveManager(&m_primitive_manager);
+	}
+
+
+	btGImpactMeshShapePart(btStridingMeshInterface * meshInterface,	int part)
+	{
+		m_primitive_manager.m_meshInterface = meshInterface;
+		m_primitive_manager.m_part = part;
+		m_box_set.setPrimitiveManager(&m_primitive_manager);
+	}
+
+	virtual ~btGImpactMeshShapePart()
+	{
+	}
+
+	//! if true, then its children must get transforms.
+	virtual bool childrenHasTransform() const
+	{
+		return false;
+	}
+
+
+	//! call when reading child shapes
+	virtual void lockChildShapes() const
+	{
+		void * dummy = (void*)(m_box_set.getPrimitiveManager());
+		TrimeshPrimitiveManager * dummymanager = static_cast<TrimeshPrimitiveManager *>(dummy);
+		dummymanager->lock();
+	}
+
+	virtual void unlockChildShapes()  const
+	{
+		void * dummy = (void*)(m_box_set.getPrimitiveManager());
+		TrimeshPrimitiveManager * dummymanager = static_cast<TrimeshPrimitiveManager *>(dummy);
+		dummymanager->unlock();
+	}
+
+	//! Gets the number of children
+	virtual int	getNumChildShapes() const
+	{
+		return m_primitive_manager.get_primitive_count();
+	}
+
+
+	//! Gets the children
+	virtual btCollisionShape* getChildShape(int index)
+	{
+		btAssert(0);
+		return NULL;
+	}
+
+
+
+	//! Gets the child
+	virtual const btCollisionShape* getChildShape(int index) const
+	{
+		btAssert(0);
+		return NULL;
+	}
+
+	//! Gets the children transform
+	virtual btTransform	getChildTransform(int index) const
+	{
+		btAssert(0);
+		return btTransform();
+	}
+
+	//! Sets the children transform
+	/*!
+	\post You must call updateBound() for update the box set.
+	*/
+	virtual void setChildTransform(int index, const btTransform & transform)
+	{
+		btAssert(0);
+	}
+
+
+	//! Obtains the primitive manager
+	virtual const btPrimitiveManagerBase * getPrimitiveManager()  const
+	{
+		return &m_primitive_manager;
+	}
+
+	SIMD_FORCE_INLINE TrimeshPrimitiveManager * getTrimeshPrimitiveManager()
+	{
+		return &m_primitive_manager;
+	}
+
+
+
+
+
+	virtual void	calculateLocalInertia(btScalar mass,btVector3& inertia) const;
+
+
+
+
+	virtual const char*	getName()const
+	{
+		return "GImpactMeshShapePart";
+	}
+
+	virtual eGIMPACT_SHAPE_TYPE getGImpactShapeType()
+	{
+		return CONST_GIMPACT_TRIMESH_SHAPE_PART;
+	}
+
+	//! Determines if this shape has triangles
+	virtual bool needsRetrieveTriangles() const
+	{
+		return true;
+	}
+
+	//! Determines if this shape has tetrahedrons
+	virtual bool needsRetrieveTetrahedrons() const
+	{
+		return false;
+	}
+
+	virtual void getBulletTriangle(int prim_index,btTriangleShapeEx & triangle) const
+	{
+		m_primitive_manager.get_bullet_triangle(prim_index,triangle);
+	}
+
+	virtual void getBulletTetrahedron(int prim_index,btTetrahedronShapeEx & tetrahedron) const
+	{
+		btAssert(0);
+	}
+
+
+
+	SIMD_FORCE_INLINE int getVertexCount() const
+	{
+		return m_primitive_manager.get_vertex_count();
+	}
+
+	SIMD_FORCE_INLINE void getVertex(int vertex_index, btVector3 & vertex) const
+	{
+		m_primitive_manager.get_vertex(vertex_index,vertex);
+	}
+
+	SIMD_FORCE_INLINE void setMargin(btScalar margin)
+    {
+    	m_primitive_manager.m_margin = margin;
+    	postUpdate();
+    }
+
+    SIMD_FORCE_INLINE btScalar getMargin() const
+    {
+    	return m_primitive_manager.m_margin;
+    }
+
+    virtual void	setLocalScaling(const btVector3& scaling)
+    {
+    	m_primitive_manager.m_scale = scaling;
+    	postUpdate();
+    }
+
+    virtual const btVector3& getLocalScaling() const
+    {
+    	return m_primitive_manager.m_scale;
+    }
+
+    SIMD_FORCE_INLINE int getPart() const
+    {
+    	return (int)m_primitive_manager.m_part;
+    }
+
+	virtual void	processAllTriangles(btTriangleCallback* callback,const btVector3& aabbMin,const btVector3& aabbMax) const;
+};
+
+
+//! This class manages a mesh supplied by the btStridingMeshInterface interface.
+/*!
+Set of btGImpactMeshShapePart parts
+- Simply create this shape by passing the btStridingMeshInterface to the constructor btGImpactMeshShape, then you must call updateBound() after creating the mesh
+
+- You can handle deformable meshes with this shape, by calling postUpdate() every time when changing the mesh vertices.
+
+*/
+class btGImpactMeshShape : public btGImpactShapeInterface
+{
+protected:
+	btAlignedObjectArray<btGImpactMeshShapePart*> m_mesh_parts;
+	void buildMeshParts(btStridingMeshInterface * meshInterface)
+	{
+		for (int i=0;i<meshInterface->getNumSubParts() ;++i )
+		{
+			btGImpactMeshShapePart * newpart = new btGImpactMeshShapePart(meshInterface,i);
+			m_mesh_parts.push_back(newpart);
+		}
+	}
+
+	//! use this function for perfofm refit in bounding boxes
+    virtual void calcLocalAABB()
+    {
+    	m_localAABB.invalidate();
+    	int i = m_mesh_parts.size();
+    	while(i--)
+    	{
+    		m_mesh_parts[i]->updateBound();
+    		m_localAABB.merge(m_mesh_parts[i]->getLocalBox());
+    	}
+    }
+
+public:
+	btGImpactMeshShape(btStridingMeshInterface * meshInterface)
+	{
+		buildMeshParts(meshInterface);
+	}
+
+	virtual ~btGImpactMeshShape()
+	{
+		int i = m_mesh_parts.size();
+    	while(i--)
+    	{
+			btGImpactMeshShapePart * part = m_mesh_parts[i];
+			delete part;
+    	}
+		m_mesh_parts.clear();
+	}
+
+
+
+	int getMeshPartCount() const
+	{
+		return m_mesh_parts.size();
+	}
+
+	btGImpactMeshShapePart * getMeshPart(int index)
+	{
+		return m_mesh_parts[index];
+	}
+
+
+
+	const btGImpactMeshShapePart * getMeshPart(int index) const
+	{
+		return m_mesh_parts[index];
+	}
+
+
+	virtual void	setLocalScaling(const btVector3& scaling)
+	{
+		localScaling = scaling;
+
+		int i = m_mesh_parts.size();
+    	while(i--)
+    	{
+			btGImpactMeshShapePart * part = m_mesh_parts[i];
+			part->setLocalScaling(scaling);
+    	}
+
+		m_needs_update = true;
+	}
+
+	virtual void setMargin(btScalar margin)
+    {
+    	m_collisionMargin = margin;
+
+		int i = m_mesh_parts.size();
+    	while(i--)
+    	{
+			btGImpactMeshShapePart * part = m_mesh_parts[i];
+			part->setMargin(margin);
+    	}
+
+		m_needs_update = true;
+    }
+
+	//! Tells to this object that is needed to refit all the meshes
+    virtual void postUpdate()
+    {
+		int i = m_mesh_parts.size();
+    	while(i--)
+    	{
+			btGImpactMeshShapePart * part = m_mesh_parts[i];
+			part->postUpdate();
+    	}
+
+    	m_needs_update = true;
+    }
+
+	virtual void	calculateLocalInertia(btScalar mass,btVector3& inertia) const;
+
+
+	//! Obtains the primitive manager
+	virtual const btPrimitiveManagerBase * getPrimitiveManager()  const
+	{
+		btAssert(0);
+		return NULL;
+	}
+
+
+	//! Gets the number of children
+	virtual int	getNumChildShapes() const
+	{
+		btAssert(0);
+		return 0;
+	}
+
+
+	//! if true, then its children must get transforms.
+	virtual bool childrenHasTransform() const
+	{
+		btAssert(0);
+		return false;
+	}
+
+	//! Determines if this shape has triangles
+	virtual bool needsRetrieveTriangles() const
+	{
+		btAssert(0);
+		return false;
+	}
+
+	//! Determines if this shape has tetrahedrons
+	virtual bool needsRetrieveTetrahedrons() const
+	{
+		btAssert(0);
+		return false;
+	}
+
+	virtual void getBulletTriangle(int prim_index,btTriangleShapeEx & triangle) const
+	{
+		btAssert(0);
+	}
+
+	virtual void getBulletTetrahedron(int prim_index,btTetrahedronShapeEx & tetrahedron) const
+	{
+		btAssert(0);
+	}
+
+	//! call when reading child shapes
+	virtual void lockChildShapes()
+	{
+		btAssert(0);
+	}
+
+	virtual void unlockChildShapes()
+	{
+		btAssert(0);
+	}
+
+
+
+
+	//! Retrieves the bound from a child
+    /*!
+    */
+    virtual void getChildAabb(int child_index,const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const
+    {
+        btAssert(0);
+    }
+
+	//! Gets the children
+	virtual btCollisionShape* getChildShape(int index)
+	{
+		btAssert(0);
+		return NULL;
+	}
+
+
+	//! Gets the child
+	virtual const btCollisionShape* getChildShape(int index) const
+	{
+		btAssert(0);
+		return NULL;
+	}
+
+	//! Gets the children transform
+	virtual btTransform	getChildTransform(int index) const
+	{
+		btAssert(0);
+		return btTransform();
+	}
+
+	//! Sets the children transform
+	/*!
+	\post You must call updateBound() for update the box set.
+	*/
+	virtual void setChildTransform(int index, const btTransform & transform)
+	{
+		btAssert(0);
+	}
+
+
+	virtual eGIMPACT_SHAPE_TYPE getGImpactShapeType()
+	{
+		return CONST_GIMPACT_TRIMESH_SHAPE;
+	}
+
+
+	virtual const char*	getName()const
+	{
+		return "GImpactMesh";
+	}
+
+	virtual void rayTest(const btVector3& rayFrom, const btVector3& rayTo, btCollisionWorld::RayResultCallback& resultCallback)  const;
+
+	//! Function for retrieve triangles.
+	/*!
+	It gives the triangles in local space
+	*/
+	virtual void	processAllTriangles(btTriangleCallback* callback,const btVector3& aabbMin,const btVector3& aabbMax) const;
+};
+
+
+#endif //GIMPACT_MESH_SHAPE_H
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGenericPoolAllocator.cpp
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGenericPoolAllocator.cpp	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGenericPoolAllocator.cpp	(revision 2431)
@@ -0,0 +1,283 @@
+/*! \file btGenericPoolAllocator.cpp
+\author Francisco Len Nßjera. email projectileman@yahoo.com
+
+General purpose allocator class
+*/
+/*
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2003-2006 Erwin Coumans  http://continuousphysics.com/Bullet/
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "btGenericPoolAllocator.h"
+
+
+
+/// *************** btGenericMemoryPool ******************///////////
+
+size_t btGenericMemoryPool::allocate_from_free_nodes(size_t num_elements)
+{
+	size_t ptr = BT_UINT_MAX;
+
+	if(m_free_nodes_count == 0) return BT_UINT_MAX;
+	// find an avaliable free node with the correct size
+	size_t revindex = m_free_nodes_count;
+
+	while(revindex-- && ptr == BT_UINT_MAX)
+	{
+		if(m_allocated_sizes[m_free_nodes[revindex]]>=num_elements)
+		{
+			ptr = revindex;
+		}
+	}
+	if(ptr == BT_UINT_MAX) return BT_UINT_MAX; // not found
+
+
+	revindex = ptr;
+	ptr = m_free_nodes[revindex];
+	// post: ptr contains the node index, and revindex the index in m_free_nodes
+
+	size_t  finalsize = m_allocated_sizes[ptr];
+	finalsize -= num_elements;
+
+	m_allocated_sizes[ptr] = num_elements;
+
+	// post: finalsize>=0, m_allocated_sizes[ptr] has the requested size
+
+	if(finalsize>0) // preserve free node, there are some free memory
+	{
+		m_free_nodes[revindex] = ptr + num_elements;
+		m_allocated_sizes[ptr + num_elements] = finalsize;
+	}
+	else // delete free node
+	{
+		// swap with end
+		m_free_nodes[revindex] = m_free_nodes[m_free_nodes_count-1];
+		m_free_nodes_count--;
+	}
+
+	return ptr;
+}
+
+size_t btGenericMemoryPool::allocate_from_pool(size_t num_elements)
+{
+	if(m_allocated_count+num_elements>m_max_element_count) return BT_UINT_MAX;
+
+	size_t ptr = m_allocated_count;
+
+	m_allocated_sizes[m_allocated_count] = num_elements;
+	m_allocated_count+=num_elements;
+
+	return ptr;
+}
+
+
+void btGenericMemoryPool::init_pool(size_t element_size, size_t element_count)
+{
+	m_allocated_count = 0;
+	m_free_nodes_count = 0;
+
+	m_element_size = element_size;
+	m_max_element_count = element_count;
+
+
+
+
+	m_pool = (unsigned char *) btAlignedAlloc(m_element_size*m_max_element_count,16);
+	m_free_nodes = (size_t *) btAlignedAlloc(sizeof(size_t)*m_max_element_count,16);
+	m_allocated_sizes = (size_t *) btAlignedAlloc(sizeof(size_t)*m_max_element_count,16);
+
+	for (size_t i = 0;i< m_max_element_count;i++ )
+	{
+		m_allocated_sizes[i] = 0;
+	}
+}
+
+void btGenericMemoryPool::end_pool()
+{
+	btAlignedFree(m_pool);
+	btAlignedFree(m_free_nodes);
+	btAlignedFree(m_allocated_sizes);
+	m_allocated_count = 0;
+	m_free_nodes_count = 0;
+}
+
+
+//! Allocates memory in pool
+/*!
+\param size_bytes size in bytes of the buffer
+*/
+void * btGenericMemoryPool::allocate(size_t size_bytes)
+{
+
+	size_t module = size_bytes%m_element_size;
+	size_t element_count = size_bytes/m_element_size;
+	if(module>0) element_count++;
+
+	size_t alloc_pos = allocate_from_free_nodes(element_count);
+	// a free node is found
+	if(alloc_pos != BT_UINT_MAX)
+	{
+		return get_element_data(alloc_pos);
+	}
+	// allocate directly on pool
+	alloc_pos = allocate_from_pool(element_count);
+
+	if(alloc_pos == BT_UINT_MAX) return NULL; // not space
+	return get_element_data(alloc_pos);
+}
+
+bool btGenericMemoryPool::freeMemory(void * pointer)
+{
+	unsigned char * pointer_pos = (unsigned char *)pointer;
+	unsigned char * pool_pos = (unsigned char *)m_pool;
+	// calc offset
+	if(pointer_pos<pool_pos) return false;//other pool
+	size_t offset = size_t(pointer_pos - pool_pos);
+	if(offset>=get_pool_capacity()) return false;// far away
+
+	// find free position
+	m_free_nodes[m_free_nodes_count] = offset/m_element_size;
+	m_free_nodes_count++;
+	return true;
+}
+
+
+/// *******************! btGenericPoolAllocator *******************!///
+
+
+btGenericPoolAllocator::~btGenericPoolAllocator()
+{
+	// destroy pools
+	size_t i;
+	for (i=0;i<m_pool_count;i++)
+	{
+		m_pools[i]->end_pool();
+		btAlignedFree(m_pools[i]);
+	}
+}
+
+
+// creates a pool
+btGenericMemoryPool * btGenericPoolAllocator::push_new_pool()
+{
+	if(m_pool_count >= BT_DEFAULT_MAX_POOLS) return NULL;
+
+	btGenericMemoryPool * newptr = (btGenericMemoryPool *)btAlignedAlloc(sizeof(btGenericMemoryPool),16);
+
+	m_pools[m_pool_count] = newptr;
+
+	m_pools[m_pool_count]->init_pool(m_pool_element_size,m_pool_element_count);
+
+	m_pool_count++;
+	return newptr;
+}
+
+void * btGenericPoolAllocator::failback_alloc(size_t size_bytes)
+{
+
+	btGenericMemoryPool * pool = NULL;
+
+
+	if(size_bytes<=get_pool_capacity())
+	{
+		pool = 	push_new_pool();
+	}
+
+	if(pool==NULL) // failback
+	{
+		return btAlignedAlloc(size_bytes,16);
+	}
+
+	return pool->allocate(size_bytes);
+}
+
+bool btGenericPoolAllocator::failback_free(void * pointer)
+{
+	btAlignedFree(pointer);
+	return true;
+}
+
+
+//! Allocates memory in pool
+/*!
+\param size_bytes size in bytes of the buffer
+*/
+void * btGenericPoolAllocator::allocate(size_t size_bytes)
+{
+	void * ptr = NULL;
+
+	size_t i = 0;
+	while(i<m_pool_count && ptr == NULL)
+	{
+		ptr = m_pools[i]->allocate(size_bytes);
+		++i;
+	}
+
+	if(ptr) return ptr;
+
+	return failback_alloc(size_bytes);
+}
+
+bool btGenericPoolAllocator::freeMemory(void * pointer)
+{
+	bool result = false;
+
+	size_t i = 0;
+	while(i<m_pool_count && result == false)
+	{
+		result = m_pools[i]->freeMemory(pointer);
+		++i;
+	}
+
+	if(result) return true;
+
+	return failback_free(pointer);
+}
+
+/// ************** STANDARD ALLOCATOR ***************************///
+
+
+#define BT_DEFAULT_POOL_SIZE 32768
+#define BT_DEFAULT_POOL_ELEMENT_SIZE 8
+
+// main allocator
+class GIM_STANDARD_ALLOCATOR: public btGenericPoolAllocator
+{
+public:
+	GIM_STANDARD_ALLOCATOR():btGenericPoolAllocator(BT_DEFAULT_POOL_ELEMENT_SIZE,BT_DEFAULT_POOL_SIZE)
+	{
+	}
+};
+
+// global allocator
+GIM_STANDARD_ALLOCATOR g_main_allocator;
+
+
+void * btPoolAlloc(size_t size)
+{
+	return g_main_allocator.allocate(size);
+}
+
+void * btPoolRealloc(void *ptr, size_t oldsize, size_t newsize)
+{
+	void * newptr = btPoolAlloc(newsize);
+    size_t copysize = oldsize<newsize?oldsize:newsize;
+    memcpy(newptr,ptr,copysize);
+    btPoolFree(ptr);
+    return newptr;
+}
+
+void btPoolFree(void *ptr)
+{
+	g_main_allocator.freeMemory(ptr);
+}
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGenericPoolAllocator.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGenericPoolAllocator.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGenericPoolAllocator.h	(revision 2431)
@@ -0,0 +1,163 @@
+/*! \file btGenericPoolAllocator.h
+\author Francisco Len Nßjera. email projectileman@yahoo.com
+
+General purpose allocator class
+*/
+/*
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2003-2006 Erwin Coumans  http://continuousphysics.com/Bullet/
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef BT_GENERIC_POOL_ALLOCATOR_H
+#define BT_GENERIC_POOL_ALLOCATOR_H
+
+#include <limits.h>
+#include <stdio.h>
+#include <memory.h>
+#include "LinearMath/btAlignedAllocator.h"
+
+#define BT_UINT_MAX UINT_MAX
+#define BT_DEFAULT_MAX_POOLS 16
+
+
+//! Generic Pool class
+class btGenericMemoryPool
+{
+public:
+	unsigned char * m_pool; //[m_element_size*m_max_element_count];
+	size_t * m_free_nodes; //[m_max_element_count];//! free nodes
+	size_t * m_allocated_sizes;//[m_max_element_count];//! Number of elements allocated per node
+	size_t m_allocated_count;
+	size_t m_free_nodes_count;
+protected:
+	size_t m_element_size;
+	size_t m_max_element_count;
+
+	size_t allocate_from_free_nodes(size_t num_elements);
+	size_t allocate_from_pool(size_t num_elements);
+
+public:
+
+	void init_pool(size_t element_size, size_t element_count);
+
+	void end_pool();
+
+
+	btGenericMemoryPool(size_t element_size, size_t element_count)
+	{
+		init_pool(element_size, element_count);
+	}
+
+	~btGenericMemoryPool()
+	{
+		end_pool();
+	}
+
+
+	inline size_t get_pool_capacity()
+	{
+		return m_element_size*m_max_element_count;
+	}
+
+	inline size_t gem_element_size()
+	{
+		return m_element_size;
+	}
+
+	inline size_t get_max_element_count()
+	{
+		return m_max_element_count;
+	}
+
+	inline size_t get_allocated_count()
+	{
+		return m_allocated_count;
+	}
+
+	inline size_t get_free_positions_count()
+	{
+		return m_free_nodes_count;
+	}
+
+	inline void * get_element_data(size_t element_index)
+	{
+		return &m_pool[element_index*m_element_size];
+	}
+
+	//! Allocates memory in pool
+	/*!
+	\param size_bytes size in bytes of the buffer
+	*/
+	void * allocate(size_t size_bytes);
+
+	bool freeMemory(void * pointer);
+};
+
+
+
+
+//! Generic Allocator with pools
+/*!
+General purpose Allocator which can create Memory Pools dynamiacally as needed.
+*/
+class btGenericPoolAllocator
+{
+protected:
+	size_t m_pool_element_size;
+	size_t m_pool_element_count;
+public:
+	btGenericMemoryPool * m_pools[BT_DEFAULT_MAX_POOLS];
+	size_t m_pool_count;
+
+
+	inline size_t get_pool_capacity()
+	{
+		return m_pool_element_size*m_pool_element_count;
+	}
+
+
+protected:
+	// creates a pool
+	btGenericMemoryPool * push_new_pool();
+
+	void * failback_alloc(size_t size_bytes);
+
+	bool failback_free(void * pointer);
+public:
+
+	btGenericPoolAllocator(size_t pool_element_size, size_t pool_element_count)
+	{
+		m_pool_count = 0;
+		m_pool_element_size = pool_element_size;
+		m_pool_element_count = pool_element_count;
+	}
+
+	virtual ~btGenericPoolAllocator();
+
+	//! Allocates memory in pool
+	/*!
+	\param size_bytes size in bytes of the buffer
+	*/
+	void * allocate(size_t size_bytes);
+
+	bool freeMemory(void * pointer);
+};
+
+
+
+void * btPoolAlloc(size_t size);
+void * btPoolRealloc(void *ptr, size_t oldsize, size_t newsize);
+void btPoolFree(void *ptr);
+
+
+#endif
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGeometryOperations.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGeometryOperations.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btGeometryOperations.h	(revision 2431)
@@ -0,0 +1,212 @@
+#ifndef BT_BASIC_GEOMETRY_OPERATIONS_H_INCLUDED
+#define BT_BASIC_GEOMETRY_OPERATIONS_H_INCLUDED
+
+/*! \file btGeometryOperations.h
+*\author Francisco Len Nßjera
+
+*/
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "btBoxCollision.h"
+
+
+
+
+
+#define PLANEDIREPSILON 0.0000001f
+#define PARALELENORMALS 0.000001f
+
+
+#define BT_CLAMP(number,minval,maxval) (number<minval?minval:(number>maxval?maxval:number))
+
+/// Calc a plane from a triangle edge an a normal. plane is a vec4f
+SIMD_FORCE_INLINE void bt_edge_plane(const btVector3 & e1,const btVector3 &  e2, const btVector3 & normal,btVector4 & plane)
+{
+	btVector3 planenormal = (e2-e1).cross(normal);
+	planenormal.normalize();
+	plane.setValue(planenormal[0],planenormal[1],planenormal[2],e2.dot(planenormal));
+}
+
+
+
+//***************** SEGMENT and LINE FUNCTIONS **********************************///
+
+/*! Finds the closest point(cp) to (v) on a segment (e1,e2)
+ */
+SIMD_FORCE_INLINE void bt_closest_point_on_segment(
+	btVector3 & cp, const btVector3 & v,
+	const btVector3  &e1,const btVector3 &e2)
+{
+    btVector3 n = e2-e1;
+    cp = v - e1;
+	btScalar _scalar = cp.dot(n)/n.dot(n);
+	if(_scalar <0.0f)
+	{
+	    cp = e1;
+	}
+	else if(_scalar >1.0f)
+	{
+	    cp = e2;
+	}
+	else
+	{
+		cp = _scalar*n + e1;
+	}
+}
+
+
+//! line plane collision
+/*!
+*\return
+	-0  if the ray never intersects
+	-1 if the ray collides in front
+	-2 if the ray collides in back
+*/
+
+SIMD_FORCE_INLINE int bt_line_plane_collision(
+	const btVector4 & plane,
+	const btVector3 & vDir,
+	const btVector3 & vPoint,
+	btVector3 & pout,
+	btScalar &tparam,
+	btScalar tmin, btScalar tmax)
+{
+
+	btScalar _dotdir = vDir.dot(plane);
+
+	if(btFabs(_dotdir)<PLANEDIREPSILON)
+	{
+		tparam = tmax;
+	    return 0;
+	}
+
+	btScalar _dis = bt_distance_point_plane(plane,vPoint);
+	char returnvalue = _dis<0.0f? 2:1;
+	tparam = -_dis/_dotdir;
+
+	if(tparam<tmin)
+	{
+		returnvalue = 0;
+		tparam = tmin;
+	}
+	else if(tparam>tmax)
+	{
+		returnvalue = 0;
+		tparam = tmax;
+	}
+	pout = tparam*vDir + vPoint;
+	return returnvalue;
+}
+
+
+//! Find closest points on segments
+SIMD_FORCE_INLINE void bt_segment_collision(
+	const btVector3 & vA1,
+	const btVector3 & vA2,
+	const btVector3 & vB1,
+	const btVector3 & vB2,
+	btVector3 & vPointA,
+	btVector3 & vPointB)
+{
+    btVector3 AD = vA2 - vA1;
+    btVector3 BD = vB2 - vB1;
+    btVector3 N = AD.cross(BD);
+    btScalar tp = N.length2();
+
+    btVector4 _M;//plane
+
+    if(tp<SIMD_EPSILON)//ARE PARALELE
+    {
+    	//project B over A
+    	bool invert_b_order = false;
+    	_M[0] = vB1.dot(AD);
+    	_M[1] = vB2.dot(AD);
+
+    	if(_M[0]>_M[1])
+    	{
+    		invert_b_order  = true;
+    		BT_SWAP_NUMBERS(_M[0],_M[1]);
+    	}
+    	_M[2] = vA1.dot(AD);
+    	_M[3] = vA2.dot(AD);
+    	//mid points
+    	N[0] = (_M[0]+_M[1])*0.5f;
+    	N[1] = (_M[2]+_M[3])*0.5f;
+
+    	if(N[0]<N[1])
+    	{
+    		if(_M[1]<_M[2])
+    		{
+    			vPointB = invert_b_order?vB1:vB2;
+    			vPointA = vA1;
+    		}
+    		else if(_M[1]<_M[3])
+    		{
+    			vPointB = invert_b_order?vB1:vB2;
+    			bt_closest_point_on_segment(vPointA,vPointB,vA1,vA2);
+    		}
+    		else
+    		{
+    			vPointA = vA2;
+    			bt_closest_point_on_segment(vPointB,vPointA,vB1,vB2);
+    		}
+    	}
+    	else
+    	{
+    		if(_M[3]<_M[0])
+    		{
+    			vPointB = invert_b_order?vB2:vB1;
+    			vPointA = vA2;
+    		}
+    		else if(_M[3]<_M[1])
+    		{
+    			vPointA = vA2;
+    			bt_closest_point_on_segment(vPointB,vPointA,vB1,vB2);
+    		}
+    		else
+    		{
+    			vPointB = invert_b_order?vB1:vB2;
+    			bt_closest_point_on_segment(vPointA,vPointB,vA1,vA2);
+    		}
+    	}
+    	return;
+    }
+
+    N = N.cross(BD);
+    _M.setValue(N[0],N[1],N[2],vB1.dot(N));
+
+	// get point A as the plane collision point
+    bt_line_plane_collision(_M,AD,vA1,vPointA,tp,btScalar(0), btScalar(1));
+
+    /*Closest point on segment*/
+    vPointB = vPointA - vB1;
+	tp = vPointB.dot(BD);
+	tp/= BD.dot(BD);
+	tp = BT_CLAMP(tp,0.0f,1.0f);
+
+	vPointB = tp*BD + vB1;
+}
+
+
+
+
+
+#endif // GIM_VECTOR_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btQuantization.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btQuantization.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btQuantization.h	(revision 2431)
@@ -0,0 +1,88 @@
+#ifndef BT_QUANTIZATION_H_INCLUDED
+#define BT_QUANTIZATION_H_INCLUDED
+
+/*! \file btQuantization.h
+*\author Francisco Len Nßjera
+
+*/
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "LinearMath/btTransform.h"
+
+
+
+
+
+
+SIMD_FORCE_INLINE void bt_calc_quantization_parameters(
+	btVector3 & outMinBound,
+	btVector3 & outMaxBound,
+	btVector3 & bvhQuantization,
+	const btVector3& srcMinBound,const btVector3& srcMaxBound,
+	btScalar quantizationMargin)
+{
+	//enlarge the AABB to avoid division by zero when initializing the quantization values
+	btVector3 clampValue(quantizationMargin,quantizationMargin,quantizationMargin);
+	outMinBound = srcMinBound - clampValue;
+	outMaxBound = srcMaxBound + clampValue;
+	btVector3 aabbSize = outMaxBound - outMinBound;
+	bvhQuantization = btVector3(btScalar(65535.0),
+								btScalar(65535.0),
+								btScalar(65535.0)) / aabbSize;
+}
+
+
+SIMD_FORCE_INLINE void bt_quantize_clamp(
+	unsigned short* out,
+	const btVector3& point,
+	const btVector3 & min_bound,
+	const btVector3 & max_bound,
+	const btVector3 & bvhQuantization)
+{
+
+	btVector3 clampedPoint(point);
+	clampedPoint.setMax(min_bound);
+	clampedPoint.setMin(max_bound);
+
+	btVector3 v = (clampedPoint - min_bound) * bvhQuantization;
+	out[0] = (unsigned short)(v.getX()+0.5f);
+	out[1] = (unsigned short)(v.getY()+0.5f);
+	out[2] = (unsigned short)(v.getZ()+0.5f);
+}
+
+
+SIMD_FORCE_INLINE btVector3 bt_unquantize(
+	const unsigned short* vecIn,
+	const btVector3 & offset,
+	const btVector3 & bvhQuantization)
+{
+	btVector3	vecOut;
+	vecOut.setValue(
+		(btScalar)(vecIn[0]) / (bvhQuantization.getX()),
+		(btScalar)(vecIn[1]) / (bvhQuantization.getY()),
+		(btScalar)(vecIn[2]) / (bvhQuantization.getZ()));
+	vecOut += offset;
+	return vecOut;
+}
+
+
+
+#endif // GIM_VECTOR_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btTriangleShapeEx.cpp
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btTriangleShapeEx.cpp	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btTriangleShapeEx.cpp	(revision 2431)
@@ -0,0 +1,218 @@
+/*! \file btGImpactTriangleShape.h
+\author Francisco Len Nßjera
+*/
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "btTriangleShapeEx.h"
+
+
+
+void GIM_TRIANGLE_CONTACT::merge_points(const btVector4 & plane,
+                                       btScalar margin, const btVector3 * points, int point_count)
+{
+    m_point_count = 0;
+    m_penetration_depth= -1000.0f;
+
+    int point_indices[MAX_TRI_CLIPPING];
+
+	int _k;
+
+    for ( _k=0;_k<point_count;_k++)
+    {
+        btScalar _dist = - bt_distance_point_plane(plane,points[_k]) + margin;
+
+        if (_dist>=0.0f)
+        {
+            if (_dist>m_penetration_depth)
+            {
+                m_penetration_depth = _dist;
+                point_indices[0] = _k;
+                m_point_count=1;
+            }
+            else if ((_dist+SIMD_EPSILON)>=m_penetration_depth)
+            {
+                point_indices[m_point_count] = _k;
+                m_point_count++;
+            }
+        }
+    }
+
+    for ( _k=0;_k<m_point_count;_k++)
+    {
+        m_points[_k] = points[point_indices[_k]];
+    }
+}
+
+///class btPrimitiveTriangle
+bool btPrimitiveTriangle::overlap_test_conservative(const btPrimitiveTriangle& other)
+{
+    btScalar total_margin = m_margin + other.m_margin;
+    // classify points on other triangle
+    btScalar dis0 = bt_distance_point_plane(m_plane,other.m_vertices[0]) - total_margin;
+
+    btScalar dis1 = bt_distance_point_plane(m_plane,other.m_vertices[1]) - total_margin;
+
+    btScalar dis2 = bt_distance_point_plane(m_plane,other.m_vertices[2]) - total_margin;
+
+    if (dis0>0.0f&&dis1>0.0f&&dis2>0.0f) return false;
+
+    // classify points on this triangle
+    dis0 = bt_distance_point_plane(other.m_plane,m_vertices[0]) - total_margin;
+
+    dis1 = bt_distance_point_plane(other.m_plane,m_vertices[1]) - total_margin;
+
+    dis2 = bt_distance_point_plane(other.m_plane,m_vertices[2]) - total_margin;
+
+    if (dis0>0.0f&&dis1>0.0f&&dis2>0.0f) return false;
+
+    return true;
+}
+
+int btPrimitiveTriangle::clip_triangle(btPrimitiveTriangle & other, btVector3 * clipped_points )
+{
+    // edge 0
+
+    btVector3 temp_points[MAX_TRI_CLIPPING];
+
+
+    btVector4 edgeplane;
+
+    get_edge_plane(0,edgeplane);
+
+
+    int clipped_count = bt_plane_clip_triangle(
+                            edgeplane,other.m_vertices[0],other.m_vertices[1],other.m_vertices[2],temp_points);
+
+    if (clipped_count == 0) return 0;
+
+    btVector3 temp_points1[MAX_TRI_CLIPPING];
+
+
+    // edge 1
+    get_edge_plane(1,edgeplane);
+
+
+    clipped_count = bt_plane_clip_polygon(edgeplane,temp_points,clipped_count,temp_points1);
+
+    if (clipped_count == 0) return 0;
+
+    // edge 2
+    get_edge_plane(2,edgeplane);
+
+    clipped_count = bt_plane_clip_polygon(
+                        edgeplane,temp_points1,clipped_count,clipped_points);
+
+    return clipped_count;
+}
+
+bool btPrimitiveTriangle::find_triangle_collision_clip_method(btPrimitiveTriangle & other, GIM_TRIANGLE_CONTACT & contacts)
+{
+    btScalar margin = m_margin + other.m_margin;
+
+    btVector3 clipped_points[MAX_TRI_CLIPPING];
+    int clipped_count;
+    //create planes
+    // plane v vs U points
+
+    GIM_TRIANGLE_CONTACT contacts1;
+
+    contacts1.m_separating_normal = m_plane;
+
+
+    clipped_count = clip_triangle(other,clipped_points);
+
+    if (clipped_count == 0 )
+    {
+        return false;//Reject
+    }
+
+    //find most deep interval face1
+    contacts1.merge_points(contacts1.m_separating_normal,margin,clipped_points,clipped_count);
+    if (contacts1.m_point_count == 0) return false; // too far
+    //Normal pointing to this triangle
+    contacts1.m_separating_normal *= -1.f;
+
+
+    //Clip tri1 by tri2 edges
+    GIM_TRIANGLE_CONTACT contacts2;
+    contacts2.m_separating_normal = other.m_plane;
+
+    clipped_count = other.clip_triangle(*this,clipped_points);
+
+    if (clipped_count == 0 )
+    {
+        return false;//Reject
+    }
+
+    //find most deep interval face1
+    contacts2.merge_points(contacts2.m_separating_normal,margin,clipped_points,clipped_count);
+    if (contacts2.m_point_count == 0) return false; // too far
+
+
+
+
+    ////check most dir for contacts
+    if (contacts2.m_penetration_depth<contacts1.m_penetration_depth)
+    {
+        contacts.copy_from(contacts2);
+    }
+    else
+    {
+        contacts.copy_from(contacts1);
+    }
+    return true;
+}
+
+
+
+///class btTriangleShapeEx: public btTriangleShape
+
+bool btTriangleShapeEx::overlap_test_conservative(const btTriangleShapeEx& other)
+{
+    btScalar total_margin = getMargin() + other.getMargin();
+
+    btVector4 plane0;
+    buildTriPlane(plane0);
+    btVector4 plane1;
+    other.buildTriPlane(plane1);
+
+    // classify points on other triangle
+    btScalar dis0 = bt_distance_point_plane(plane0,other.m_vertices1[0]) - total_margin;
+
+    btScalar dis1 = bt_distance_point_plane(plane0,other.m_vertices1[1]) - total_margin;
+
+    btScalar dis2 = bt_distance_point_plane(plane0,other.m_vertices1[2]) - total_margin;
+
+    if (dis0>0.0f&&dis1>0.0f&&dis2>0.0f) return false;
+
+    // classify points on this triangle
+    dis0 = bt_distance_point_plane(plane1,m_vertices1[0]) - total_margin;
+
+    dis1 = bt_distance_point_plane(plane1,m_vertices1[1]) - total_margin;
+
+    dis2 = bt_distance_point_plane(plane1,m_vertices1[2]) - total_margin;
+
+    if (dis0>0.0f&&dis1>0.0f&&dis2>0.0f) return false;
+
+    return true;
+}
+
+
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/btTriangleShapeEx.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/btTriangleShapeEx.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/btTriangleShapeEx.h	(revision 2431)
@@ -0,0 +1,180 @@
+/*! \file btGImpactShape.h
+\author Francisco Len Nßjera
+*/
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+
+#ifndef TRIANGLE_SHAPE_EX_H
+#define TRIANGLE_SHAPE_EX_H
+
+#include "BulletCollision/CollisionShapes/btCollisionShape.h"
+#include "BulletCollision/CollisionShapes/btTriangleShape.h"
+#include "btBoxCollision.h"
+#include "btClipPolygon.h"
+#include "btGeometryOperations.h"
+
+
+#define MAX_TRI_CLIPPING 16
+
+//! Structure for collision
+struct GIM_TRIANGLE_CONTACT
+{
+    btScalar m_penetration_depth;
+    int m_point_count;
+    btVector4 m_separating_normal;
+    btVector3 m_points[MAX_TRI_CLIPPING];
+
+	SIMD_FORCE_INLINE void copy_from(const GIM_TRIANGLE_CONTACT& other)
+	{
+		m_penetration_depth = other.m_penetration_depth;
+		m_separating_normal = other.m_separating_normal;
+		m_point_count = other.m_point_count;
+		int i = m_point_count;
+		while(i--)
+		{
+			m_points[i] = other.m_points[i];
+		}
+	}
+
+	GIM_TRIANGLE_CONTACT()
+	{
+	}
+
+	GIM_TRIANGLE_CONTACT(const GIM_TRIANGLE_CONTACT& other)
+	{
+		copy_from(other);
+	}
+
+    //! classify points that are closer
+    void merge_points(const btVector4 & plane,
+    				btScalar margin, const btVector3 * points, int point_count);
+
+};
+
+
+
+class btPrimitiveTriangle
+{
+public:
+	btVector3 m_vertices[3];
+	btVector4 m_plane;
+	btScalar m_margin;
+	btScalar m_dummy;
+	btPrimitiveTriangle():m_margin(0.01f)
+	{
+
+	}
+
+
+	SIMD_FORCE_INLINE void buildTriPlane()
+	{
+		btVector3 normal = (m_vertices[1]-m_vertices[0]).cross(m_vertices[2]-m_vertices[0]);
+		normal.normalize();
+		m_plane.setValue(normal[0],normal[1],normal[2],m_vertices[0].dot(normal));
+	}
+
+	//! Test if triangles could collide
+	bool overlap_test_conservative(const btPrimitiveTriangle& other);
+
+	//! Calcs the plane which is paralele to the edge and perpendicular to the triangle plane
+	/*!
+	\pre this triangle must have its plane calculated.
+	*/
+	SIMD_FORCE_INLINE void get_edge_plane(int edge_index, btVector4 &plane)  const
+    {
+		const btVector3 & e0 = m_vertices[edge_index];
+		const btVector3 & e1 = m_vertices[(edge_index+1)%3];
+		bt_edge_plane(e0,e1,m_plane,plane);
+    }
+
+    void applyTransform(const btTransform& t)
+	{
+		m_vertices[0] = t(m_vertices[0]);
+		m_vertices[1] = t(m_vertices[1]);
+		m_vertices[2] = t(m_vertices[2]);
+	}
+
+	//! Clips the triangle against this
+	/*!
+	\pre clipped_points must have MAX_TRI_CLIPPING size, and this triangle must have its plane calculated.
+	\return the number of clipped points
+	*/
+    int clip_triangle(btPrimitiveTriangle & other, btVector3 * clipped_points );
+
+	//! Find collision using the clipping method
+	/*!
+	\pre this triangle and other must have their triangles calculated
+	*/
+    bool find_triangle_collision_clip_method(btPrimitiveTriangle & other, GIM_TRIANGLE_CONTACT & contacts);
+};
+
+
+
+//! Helper class for colliding Bullet Triangle Shapes
+/*!
+This class implements a better getAabb method than the previous btTriangleShape class
+*/
+class btTriangleShapeEx: public btTriangleShape
+{
+public:
+
+	btTriangleShapeEx():btTriangleShape(btVector3(0,0,0),btVector3(0,0,0),btVector3(0,0,0))
+	{
+	}
+
+	btTriangleShapeEx(const btVector3& p0,const btVector3& p1,const btVector3& p2):	btTriangleShape(p0,p1,p2)
+	{
+	}
+
+	btTriangleShapeEx(const btTriangleShapeEx & other):	btTriangleShape(other.m_vertices1[0],other.m_vertices1[1],other.m_vertices1[2])
+	{
+	}
+
+	virtual void getAabb(const btTransform& t,btVector3& aabbMin,btVector3& aabbMax)const
+	{
+		btVector3 tv0 = t(m_vertices1[0]);
+		btVector3 tv1 = t(m_vertices1[1]);
+		btVector3 tv2 = t(m_vertices1[2]);
+
+		btAABB trianglebox(tv0,tv1,tv2,m_collisionMargin);
+		aabbMin = trianglebox.m_min;
+		aabbMax = trianglebox.m_max;
+	}
+
+	void applyTransform(const btTransform& t)
+	{
+		m_vertices1[0] = t(m_vertices1[0]);
+		m_vertices1[1] = t(m_vertices1[1]);
+		m_vertices1[2] = t(m_vertices1[2]);
+	}
+
+	SIMD_FORCE_INLINE void buildTriPlane(btVector4 & plane) const
+	{
+		btVector3 normal = (m_vertices1[1]-m_vertices1[0]).cross(m_vertices1[2]-m_vertices1[0]);
+		normal.normalize();
+		plane.setValue(normal[0],normal[1],normal[2],m_vertices1[0].dot(normal));
+	}
+
+	bool overlap_test_conservative(const btTriangleShapeEx& other);
+};
+
+
+#endif //TRIANGLE_MESH_SHAPE_H
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_array.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_array.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_array.h	(revision 2431)
@@ -0,0 +1,326 @@
+#ifndef GIM_ARRAY_H_INCLUDED
+#define GIM_ARRAY_H_INCLUDED
+/*! \file gim_array.h
+\author Francisco Len Nßjera
+*/
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+#include "gim_memory.h"
+
+
+#define GIM_ARRAY_GROW_INCREMENT 2
+#define GIM_ARRAY_GROW_FACTOR 2
+
+//!	Very simple array container with fast access and simd memory
+template<typename T>
+class gim_array
+{
+public:
+//! properties
+//!@{
+    T *m_data;
+    GUINT m_size;
+    GUINT m_allocated_size;
+//!@}
+//! protected operations
+//!@{
+
+    inline void destroyData()
+	{
+	    m_allocated_size = 0;
+		if(m_data==NULL) return;
+		gim_free(m_data);
+		m_data = NULL;
+	}
+
+	inline bool resizeData(GUINT newsize)
+	{
+		if(newsize==0)
+		{
+			destroyData();
+			return true;
+		}
+
+		if(m_size>0)
+		{
+            m_data = (T*)gim_realloc(m_data,m_size*sizeof(T),newsize*sizeof(T));
+		}
+		else
+		{
+		    m_data = (T*)gim_alloc(newsize*sizeof(T));
+		}
+		m_allocated_size = newsize;
+		return true;
+	}
+
+	inline bool growingCheck()
+	{
+		if(m_allocated_size<=m_size)
+		{
+		    GUINT requestsize = m_size;
+		    m_size = m_allocated_size;
+			if(resizeData((requestsize+GIM_ARRAY_GROW_INCREMENT)*GIM_ARRAY_GROW_FACTOR)==false) return false;
+		}
+		return true;
+	}
+
+//!@}
+//! public operations
+//!@{
+    inline  bool reserve(GUINT size)
+    {
+        if(m_allocated_size>=size) return false;
+        return resizeData(size);
+    }
+
+    inline void clear_range(GUINT start_range)
+    {
+        while(m_size>start_range)
+        {
+            m_data[--m_size].~T();
+        }
+    }
+
+    inline void clear()
+    {
+        if(m_size==0)return;
+        clear_range(0);
+    }
+
+    inline void clear_memory()
+    {
+        clear();
+        destroyData();
+    }
+
+    gim_array()
+    {
+        m_data = 0;
+        m_size = 0;
+        m_allocated_size = 0;
+    }
+
+    gim_array(GUINT reservesize)
+    {
+        m_data = 0;
+        m_size = 0;
+
+        m_allocated_size = 0;
+        reserve(reservesize);
+    }
+
+    ~gim_array()
+    {
+        clear_memory();
+    }
+
+    inline GUINT size() const
+    {
+        return m_size;
+    }
+
+    inline GUINT max_size() const
+    {
+        return m_allocated_size;
+    }
+
+    inline T & operator[](size_t i)
+	{
+		return m_data[i];
+	}
+	inline  const T & operator[](size_t i) const
+	{
+		return m_data[i];
+	}
+
+    inline T * pointer(){ return m_data;}
+    inline const T * pointer() const
+    { return m_data;}
+
+
+    inline T * get_pointer_at(GUINT i)
+	{
+		return m_data + i;
+	}
+
+	inline const T * get_pointer_at(GUINT i) const
+	{
+		return m_data + i;
+	}
+
+	inline T & at(GUINT i)
+	{
+		return m_data[i];
+	}
+
+	inline const T & at(GUINT i) const
+	{
+		return m_data[i];
+	}
+
+	inline T & front()
+	{
+		return *m_data;
+	}
+
+	inline const T & front() const
+	{
+		return *m_data;
+	}
+
+	inline T & back()
+	{
+		return m_data[m_size-1];
+	}
+
+	inline const T & back() const
+	{
+		return m_data[m_size-1];
+	}
+
+
+	inline void swap(GUINT i, GUINT j)
+	{
+	    gim_swap_elements(m_data,i,j);
+	}
+
+	inline void push_back(const T & obj)
+	{
+	    this->growingCheck();
+	    m_data[m_size] = obj;
+	    m_size++;
+	}
+
+	//!Simply increase the m_size, doesn't call the new element constructor
+	inline void push_back_mem()
+	{
+	    this->growingCheck();
+	    m_size++;
+	}
+
+	inline void push_back_memcpy(const T & obj)
+	{
+	    this->growingCheck();
+	    irr_simd_memcpy(&m_data[m_size],&obj,sizeof(T));
+	    m_size++;
+	}
+
+	inline void pop_back()
+	{
+	    m_size--;
+        m_data[m_size].~T();
+	}
+
+	//!Simply decrease the m_size, doesn't call the deleted element destructor
+	inline void pop_back_mem()
+	{
+	    m_size--;
+	}
+
+    //! fast erase
+	inline void erase(GUINT index)
+	{
+	    if(index<m_size-1)
+	    {
+	        swap(index,m_size-1);
+	    }
+	    pop_back();
+	}
+
+	inline void erase_sorted_mem(GUINT index)
+	{
+	    m_size--;
+	    for(GUINT i = index;i<m_size;i++)
+	    {
+	        gim_simd_memcpy(m_data+i,m_data+i+1,sizeof(T));
+	    }
+	}
+
+	inline void erase_sorted(GUINT index)
+	{
+	    m_data[index].~T();
+	    erase_sorted_mem(index);
+	}
+
+	inline void insert_mem(GUINT index)
+	{
+	    this->growingCheck();
+	    for(GUINT i = m_size;i>index;i--)
+	    {
+	        gim_simd_memcpy(m_data+i,m_data+i-1,sizeof(T));
+	    }
+	    m_size++;
+	}
+
+	inline void insert(const T & obj,GUINT index)
+	{
+	    insert_mem(index);
+	    m_data[index] = obj;
+	}
+
+	inline void resize(GUINT size, bool call_constructor = true)
+	{
+
+	    if(size>m_size)
+	    {
+            reserve(size);
+            if(call_constructor)
+            {
+            	T obj;
+                while(m_size<size)
+                {
+                    m_data[m_size] = obj;
+                    m_size++;
+                }
+            }
+            else
+            {
+            	m_size = size;
+            }
+	    }
+	    else if(size<m_size)
+	    {
+	        if(call_constructor) clear_range(size);
+	        m_size = size;
+	    }
+	}
+
+	inline void refit()
+	{
+	    resizeData(m_size);
+	}
+
+};
+
+
+
+
+
+#endif // GIM_CONTAINERS_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_basic_geometry_operations.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_basic_geometry_operations.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_basic_geometry_operations.h	(revision 2431)
@@ -0,0 +1,543 @@
+#ifndef GIM_BASIC_GEOMETRY_OPERATIONS_H_INCLUDED
+#define GIM_BASIC_GEOMETRY_OPERATIONS_H_INCLUDED
+
+/*! \file gim_basic_geometry_operations.h
+*\author Francisco Len Nßjera
+type independant geometry routines
+
+*/
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+
+#include "gim_linear_math.h"
+
+
+
+
+
+#define PLANEDIREPSILON 0.0000001f
+#define PARALELENORMALS 0.000001f
+
+
+#define TRIANGLE_NORMAL(v1,v2,v3,n)\
+{\
+	vec3f _dif1,_dif2;\
+    VEC_DIFF(_dif1,v2,v1);\
+    VEC_DIFF(_dif2,v3,v1);\
+    VEC_CROSS(n,_dif1,_dif2);\
+    VEC_NORMALIZE(n);\
+}\
+
+#define TRIANGLE_NORMAL_FAST(v1,v2,v3,n){\
+    vec3f _dif1,_dif2; \
+    VEC_DIFF(_dif1,v2,v1); \
+    VEC_DIFF(_dif2,v3,v1); \
+    VEC_CROSS(n,_dif1,_dif2); \
+}\
+
+/// plane is a vec4f
+#define TRIANGLE_PLANE(v1,v2,v3,plane) {\
+    TRIANGLE_NORMAL(v1,v2,v3,plane);\
+    plane[3] = VEC_DOT(v1,plane);\
+}\
+
+/// plane is a vec4f
+#define TRIANGLE_PLANE_FAST(v1,v2,v3,plane) {\
+    TRIANGLE_NORMAL_FAST(v1,v2,v3,plane);\
+    plane[3] = VEC_DOT(v1,plane);\
+}\
+
+/// Calc a plane from an edge an a normal. plane is a vec4f
+#define EDGE_PLANE(e1,e2,n,plane) {\
+    vec3f _dif; \
+    VEC_DIFF(_dif,e2,e1); \
+    VEC_CROSS(plane,_dif,n); \
+    VEC_NORMALIZE(plane); \
+    plane[3] = VEC_DOT(e1,plane);\
+}\
+
+#define DISTANCE_PLANE_POINT(plane,point) (VEC_DOT(plane,point) - plane[3])
+
+#define PROJECT_POINT_PLANE(point,plane,projected) {\
+	GREAL _dis;\
+	_dis = DISTANCE_PLANE_POINT(plane,point);\
+	VEC_SCALE(projected,-_dis,plane);\
+	VEC_SUM(projected,projected,point);	\
+}\
+
+//! Verifies if a point is in the plane hull
+template<typename CLASS_POINT,typename CLASS_PLANE>
+SIMD_FORCE_INLINE bool POINT_IN_HULL(
+	const CLASS_POINT& point,const CLASS_PLANE * planes,GUINT plane_count)
+{
+	GREAL _dis;
+	for (GUINT _i = 0;_i< plane_count;++_i)
+	{
+		_dis = DISTANCE_PLANE_POINT(planes[_i],point);
+	    if(_dis>0.0f) return false;
+	}
+	return true;
+}
+
+template<typename CLASS_POINT,typename CLASS_PLANE>
+SIMD_FORCE_INLINE void PLANE_CLIP_SEGMENT(
+	const CLASS_POINT& s1,
+	const CLASS_POINT &s2,const CLASS_PLANE &plane,CLASS_POINT &clipped)
+{
+	GREAL _dis1,_dis2;
+	_dis1 = DISTANCE_PLANE_POINT(plane,s1);
+	VEC_DIFF(clipped,s2,s1);
+	_dis2 = VEC_DOT(clipped,plane);
+	VEC_SCALE(clipped,-_dis1/_dis2,clipped);
+	VEC_SUM(clipped,clipped,s1);
+}
+
+enum ePLANE_INTERSECTION_TYPE
+{
+	G_BACK_PLANE = 0,
+	G_COLLIDE_PLANE,
+	G_FRONT_PLANE
+};
+
+enum eLINE_PLANE_INTERSECTION_TYPE
+{
+	G_FRONT_PLANE_S1 = 0,
+	G_FRONT_PLANE_S2,
+	G_BACK_PLANE_S1,
+	G_BACK_PLANE_S2,
+	G_COLLIDE_PLANE_S1,
+	G_COLLIDE_PLANE_S2
+};
+
+//! Confirms if the plane intersect the edge or nor
+/*!
+intersection type must have the following values
+<ul>
+<li> 0 : Segment in front of plane, s1 closest
+<li> 1 : Segment in front of plane, s2 closest
+<li> 2 : Segment in back of plane, s1 closest
+<li> 3 : Segment in back of plane, s2 closest
+<li> 4 : Segment collides plane, s1 in back
+<li> 5 : Segment collides plane, s2 in back
+</ul>
+*/
+
+template<typename CLASS_POINT,typename CLASS_PLANE>
+SIMD_FORCE_INLINE eLINE_PLANE_INTERSECTION_TYPE PLANE_CLIP_SEGMENT2(
+	const CLASS_POINT& s1,
+	const CLASS_POINT &s2,
+	const CLASS_PLANE &plane,CLASS_POINT &clipped)
+{
+	GREAL _dis1 = DISTANCE_PLANE_POINT(plane,s1);
+	GREAL _dis2 = DISTANCE_PLANE_POINT(plane,s2);
+	if(_dis1 >-G_EPSILON && _dis2 >-G_EPSILON)
+	{
+	    if(_dis1<_dis2) return G_FRONT_PLANE_S1;
+	    return G_FRONT_PLANE_S2;
+	}
+	else if(_dis1 <G_EPSILON && _dis2 <G_EPSILON)
+	{
+	    if(_dis1>_dis2) return G_BACK_PLANE_S1;
+	    return G_BACK_PLANE_S2;
+	}
+
+	VEC_DIFF(clipped,s2,s1);
+	_dis2 = VEC_DOT(clipped,plane);
+	VEC_SCALE(clipped,-_dis1/_dis2,clipped);
+	VEC_SUM(clipped,clipped,s1);
+	if(_dis1<_dis2) return G_COLLIDE_PLANE_S1;
+	return G_COLLIDE_PLANE_S2;
+}
+
+//! Confirms if the plane intersect the edge or not
+/*!
+clipped1 and clipped2 are the vertices behind the plane.
+clipped1 is the closest
+
+intersection_type must have the following values
+<ul>
+<li> 0 : Segment in front of plane, s1 closest
+<li> 1 : Segment in front of plane, s2 closest
+<li> 2 : Segment in back of plane, s1 closest
+<li> 3 : Segment in back of plane, s2 closest
+<li> 4 : Segment collides plane, s1 in back
+<li> 5 : Segment collides plane, s2 in back
+</ul>
+*/
+template<typename CLASS_POINT,typename CLASS_PLANE>
+SIMD_FORCE_INLINE eLINE_PLANE_INTERSECTION_TYPE PLANE_CLIP_SEGMENT_CLOSEST(
+	const CLASS_POINT& s1,
+	const CLASS_POINT &s2,
+	const CLASS_PLANE &plane,
+	CLASS_POINT &clipped1,CLASS_POINT &clipped2)
+{
+	eLINE_PLANE_INTERSECTION_TYPE intersection_type = PLANE_CLIP_SEGMENT2(s1,s2,plane,clipped1);
+	switch(intersection_type)
+	{
+	case G_FRONT_PLANE_S1:
+		VEC_COPY(clipped1,s1);
+	    VEC_COPY(clipped2,s2);
+		break;
+	case G_FRONT_PLANE_S2:
+		VEC_COPY(clipped1,s2);
+	    VEC_COPY(clipped2,s1);
+		break;
+	case G_BACK_PLANE_S1:
+		VEC_COPY(clipped1,s1);
+	    VEC_COPY(clipped2,s2);
+		break;
+	case G_BACK_PLANE_S2:
+		VEC_COPY(clipped1,s2);
+	    VEC_COPY(clipped2,s1);
+		break;
+	case G_COLLIDE_PLANE_S1:
+		VEC_COPY(clipped2,s1);
+		break;
+	case G_COLLIDE_PLANE_S2:
+		VEC_COPY(clipped2,s2);
+		break;
+	}
+	return intersection_type;
+}
+
+
+//! Finds the 2 smallest cartesian coordinates of a plane normal
+#define PLANE_MINOR_AXES(plane, i0, i1) VEC_MINOR_AXES(plane, i0, i1)
+
+//! Ray plane collision in one way
+/*!
+Intersects plane in one way only. The ray must face the plane (normals must be in opossite directions).<br/>
+It uses the PLANEDIREPSILON constant.
+*/
+template<typename T,typename CLASS_POINT,typename CLASS_PLANE>
+SIMD_FORCE_INLINE bool RAY_PLANE_COLLISION(
+	const CLASS_PLANE & plane,
+	const CLASS_POINT & vDir,
+	const CLASS_POINT & vPoint,
+	CLASS_POINT & pout,T &tparam)
+{
+	GREAL _dis,_dotdir;
+	_dotdir = VEC_DOT(plane,vDir);
+	if(_dotdir<PLANEDIREPSILON)
+	{
+	    return false;
+	}
+	_dis = DISTANCE_PLANE_POINT(plane,vPoint);
+	tparam = -_dis/_dotdir;
+	VEC_SCALE(pout,tparam,vDir);
+	VEC_SUM(pout,vPoint,pout);
+	return true;
+}
+
+//! line collision
+/*!
+*\return
+	-0  if the ray never intersects
+	-1 if the ray collides in front
+	-2 if the ray collides in back
+*/
+template<typename T,typename CLASS_POINT,typename CLASS_PLANE>
+SIMD_FORCE_INLINE GUINT LINE_PLANE_COLLISION(
+	const CLASS_PLANE & plane,
+	const CLASS_POINT & vDir,
+	const CLASS_POINT & vPoint,
+	CLASS_POINT & pout,
+	T &tparam,
+	T tmin, T tmax)
+{
+	GREAL _dis,_dotdir;
+	_dotdir = VEC_DOT(plane,vDir);
+	if(btFabs(_dotdir)<PLANEDIREPSILON)
+	{
+		tparam = tmax;
+	    return 0;
+	}
+	_dis = DISTANCE_PLANE_POINT(plane,vPoint);
+	char returnvalue = _dis<0.0f?2:1;
+	tparam = -_dis/_dotdir;
+
+	if(tparam<tmin)
+	{
+		returnvalue = 0;
+		tparam = tmin;
+	}
+	else if(tparam>tmax)
+	{
+		returnvalue = 0;
+		tparam = tmax;
+	}
+
+	VEC_SCALE(pout,tparam,vDir);
+	VEC_SUM(pout,vPoint,pout);
+	return returnvalue;
+}
+
+/*! \brief Returns the Ray on which 2 planes intersect if they do.
+    Written by Rodrigo Hernandez on ODE convex collision
+
+  \param p1 Plane 1
+  \param p2 Plane 2
+  \param p Contains the origin of the ray upon returning if planes intersect
+  \param d Contains the direction of the ray upon returning if planes intersect
+  \return true if the planes intersect, 0 if paralell.
+
+*/
+template<typename CLASS_POINT,typename CLASS_PLANE>
+SIMD_FORCE_INLINE bool INTERSECT_PLANES(
+		const CLASS_PLANE &p1,
+		const CLASS_PLANE &p2,
+		CLASS_POINT &p,
+		CLASS_POINT &d)
+{
+	VEC_CROSS(d,p1,p2);
+  	GREAL denom = VEC_DOT(d, d);
+  	if(GIM_IS_ZERO(denom)) return false;
+	vec3f _n;
+	_n[0]=p1[3]*p2[0] - p2[3]*p1[0];
+	_n[1]=p1[3]*p2[1] - p2[3]*p1[1];
+	_n[2]=p1[3]*p2[2] - p2[3]*p1[2];
+	VEC_CROSS(p,_n,d);
+	p[0]/=denom;
+	p[1]/=denom;
+	p[2]/=denom;
+	return true;
+}
+
+//***************** SEGMENT and LINE FUNCTIONS **********************************///
+
+/*! Finds the closest point(cp) to (v) on a segment (e1,e2)
+ */
+template<typename CLASS_POINT>
+SIMD_FORCE_INLINE void CLOSEST_POINT_ON_SEGMENT(
+	CLASS_POINT & cp, const CLASS_POINT & v,
+	const CLASS_POINT &e1,const CLASS_POINT &e2)
+{
+    vec3f _n;
+    VEC_DIFF(_n,e2,e1);
+    VEC_DIFF(cp,v,e1);
+	GREAL _scalar = VEC_DOT(cp, _n);
+	_scalar/= VEC_DOT(_n, _n);
+	if(_scalar <0.0f)
+	{
+	    VEC_COPY(cp,e1);
+	}
+	else if(_scalar >1.0f)
+	{
+	    VEC_COPY(cp,e2);
+	}
+	else
+	{
+        VEC_SCALE(cp,_scalar,_n);
+        VEC_SUM(cp,cp,e1);
+	}
+}
+
+
+/*! \brief Finds the line params where these lines intersect.
+
+\param dir1 Direction of line 1
+\param point1 Point of line 1
+\param dir2 Direction of line 2
+\param point2 Point of line 2
+\param t1 Result Parameter for line 1
+\param t2 Result Parameter for line 2
+\param dointersect  0  if the lines won't intersect, else 1
+
+*/
+template<typename T,typename CLASS_POINT>
+SIMD_FORCE_INLINE bool LINE_INTERSECTION_PARAMS(
+	const CLASS_POINT & dir1,
+	CLASS_POINT & point1,
+	const CLASS_POINT & dir2,
+	CLASS_POINT &  point2,
+	T& t1,T& t2)
+{
+    GREAL det;
+	GREAL e1e1 = VEC_DOT(dir1,dir1);
+	GREAL e1e2 = VEC_DOT(dir1,dir2);
+	GREAL e2e2 = VEC_DOT(dir2,dir2);
+	vec3f p1p2;
+    VEC_DIFF(p1p2,point1,point2);
+    GREAL p1p2e1 = VEC_DOT(p1p2,dir1);
+	GREAL p1p2e2 = VEC_DOT(p1p2,dir2);
+	det = e1e2*e1e2 - e1e1*e2e2;
+	if(GIM_IS_ZERO(det)) return false;
+	t1 = (e1e2*p1p2e2 - e2e2*p1p2e1)/det;
+	t2 = (e1e1*p1p2e2 - e1e2*p1p2e1)/det;
+	return true;
+}
+
+//! Find closest points on segments
+template<typename CLASS_POINT>
+SIMD_FORCE_INLINE void SEGMENT_COLLISION(
+	const CLASS_POINT & vA1,
+	const CLASS_POINT & vA2,
+	const CLASS_POINT & vB1,
+	const CLASS_POINT & vB2,
+	CLASS_POINT & vPointA,
+	CLASS_POINT & vPointB)
+{
+    CLASS_POINT _AD,_BD,_N;
+    vec4f _M;//plane
+    VEC_DIFF(_AD,vA2,vA1);
+    VEC_DIFF(_BD,vB2,vB1);
+    VEC_CROSS(_N,_AD,_BD);
+    GREAL _tp = VEC_DOT(_N,_N);
+    if(_tp<G_EPSILON)//ARE PARALELE
+    {
+    	//project B over A
+    	bool invert_b_order = false;
+    	_M[0] = VEC_DOT(vB1,_AD);
+    	_M[1] = VEC_DOT(vB2,_AD);
+    	if(_M[0]>_M[1])
+    	{
+    		invert_b_order  = true;
+    		GIM_SWAP_NUMBERS(_M[0],_M[1]);
+    	}
+    	_M[2] = VEC_DOT(vA1,_AD);
+    	_M[3] = VEC_DOT(vA2,_AD);
+    	//mid points
+    	_N[0] = (_M[0]+_M[1])*0.5f;
+    	_N[1] = (_M[2]+_M[3])*0.5f;
+
+    	if(_N[0]<_N[1])
+    	{
+    		if(_M[1]<_M[2])
+    		{
+    			vPointB = invert_b_order?vB1:vB2;
+    			vPointA = vA1;
+    		}
+    		else if(_M[1]<_M[3])
+    		{
+    			vPointB = invert_b_order?vB1:vB2;
+    			CLOSEST_POINT_ON_SEGMENT(vPointA,vPointB,vA1,vA2);
+    		}
+    		else
+    		{
+    			vPointA = vA2;
+    			CLOSEST_POINT_ON_SEGMENT(vPointB,vPointA,vB1,vB2);
+    		}
+    	}
+    	else
+    	{
+    		if(_M[3]<_M[0])
+    		{
+    			vPointB = invert_b_order?vB2:vB1;
+    			vPointA = vA2;
+    		}
+    		else if(_M[3]<_M[1])
+    		{
+    			vPointA = vA2;
+    			CLOSEST_POINT_ON_SEGMENT(vPointB,vPointA,vB1,vB2);
+    		}
+    		else
+    		{
+    			vPointB = invert_b_order?vB1:vB2;
+    			CLOSEST_POINT_ON_SEGMENT(vPointA,vPointB,vA1,vA2);
+    		}
+    	}
+    	return;
+    }
+
+
+    VEC_CROSS(_M,_N,_BD);
+    _M[3] = VEC_DOT(_M,vB1);
+
+    LINE_PLANE_COLLISION(_M,_AD,vA1,vPointA,_tp,btScalar(0), btScalar(1));
+    /*Closest point on segment*/
+    VEC_DIFF(vPointB,vPointA,vB1);
+	_tp = VEC_DOT(vPointB, _BD);
+	_tp/= VEC_DOT(_BD, _BD);
+	_tp = GIM_CLAMP(_tp,0.0f,1.0f);
+    VEC_SCALE(vPointB,_tp,_BD);
+    VEC_SUM(vPointB,vPointB,vB1);
+}
+
+
+
+
+//! Line box intersection in one dimension
+/*!
+
+*\param pos Position of the ray
+*\param dir Projection of the Direction of the ray
+*\param bmin Minimum bound of the box
+*\param bmax Maximum bound of the box
+*\param tfirst the minimum projection. Assign to 0 at first.
+*\param tlast the maximum projection. Assign to INFINITY at first.
+*\return true if there is an intersection.
+*/
+template<typename T>
+SIMD_FORCE_INLINE bool BOX_AXIS_INTERSECT(T pos, T dir,T bmin, T bmax, T & tfirst, T & tlast)
+{
+	if(GIM_IS_ZERO(dir))
+	{
+        return !(pos < bmin || pos > bmax);
+	}
+	GREAL a0 = (bmin - pos) / dir;
+	GREAL a1 = (bmax - pos) / dir;
+	if(a0 > a1)   GIM_SWAP_NUMBERS(a0, a1);
+	tfirst = GIM_MAX(a0, tfirst);
+	tlast = GIM_MIN(a1, tlast);
+	if (tlast < tfirst) return false;
+	return true;
+}
+
+
+//! Sorts 3 componets
+template<typename T>
+SIMD_FORCE_INLINE void SORT_3_INDICES(
+		const T * values,
+		GUINT * order_indices)
+{
+	//get minimum
+	order_indices[0] = values[0] < values[1] ? (values[0] < values[2] ? 0 : 2) : (values[1] < values[2] ? 1 : 2);
+
+	//get second and third
+	GUINT i0 = (order_indices[0] + 1)%3;
+	GUINT i1 = (i0 + 1)%3;
+
+	if(values[i0] < values[i1])
+	{
+		order_indices[1] = i0;
+		order_indices[2] = i1;
+	}
+	else
+	{
+		order_indices[1] = i1;
+		order_indices[2] = i0;
+	}
+}
+
+
+
+
+
+#endif // GIM_VECTOR_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_bitset.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_bitset.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_bitset.h	(revision 2431)
@@ -0,0 +1,123 @@
+#ifndef GIM_BITSET_H_INCLUDED
+#define GIM_BITSET_H_INCLUDED
+/*! \file gim_bitset.h
+\author Francisco Len Nßjera
+*/
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+#include "gim_array.h"
+
+
+#define GUINT_BIT_COUNT 32
+#define GUINT_EXPONENT 5
+
+class gim_bitset
+{
+public:
+    gim_array<GUINT> m_container;
+
+    gim_bitset()
+    {
+
+    }
+
+    gim_bitset(GUINT bits_count)
+    {
+        resize(bits_count);
+    }
+
+    ~gim_bitset()
+    {
+    }
+
+	inline bool resize(GUINT newsize)
+	{
+		GUINT oldsize = m_container.size();
+		m_container.resize(newsize/GUINT_BIT_COUNT + 1,false);
+		while(oldsize<m_container.size())
+		{
+			m_container[oldsize] = 0;
+		}
+		return true;
+	}
+
+	inline GUINT size()
+	{
+		return m_container.size()*GUINT_BIT_COUNT;
+	}
+
+	inline void set_all()
+	{
+		for(GUINT i = 0;i<m_container.size();++i)
+		{
+			m_container[i] = 0xffffffff;
+		}
+	}
+
+	inline void clear_all()
+	{
+	    for(GUINT i = 0;i<m_container.size();++i)
+		{
+			m_container[i] = 0;
+		}
+	}
+
+	inline void set(GUINT bit_index)
+	{
+		if(bit_index>=size())
+		{
+			resize(bit_index);
+		}
+		m_container[bit_index >> GUINT_EXPONENT] |= (1 << (bit_index & (GUINT_BIT_COUNT-1)));
+	}
+
+	///Return 0 or 1
+	inline char get(GUINT bit_index)
+	{
+		if(bit_index>=size())
+		{
+			return 0;
+		}
+		char value = m_container[bit_index >> GUINT_EXPONENT] &
+					 (1 << (bit_index & (GUINT_BIT_COUNT-1)));
+		return value;
+	}
+
+	inline void clear(GUINT bit_index)
+	{
+	    m_container[bit_index >> GUINT_EXPONENT] &= ~(1 << (bit_index & (GUINT_BIT_COUNT-1)));
+	}
+};
+
+
+
+
+
+#endif // GIM_CONTAINERS_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_box_collision.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_box_collision.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_box_collision.h	(revision 2431)
@@ -0,0 +1,590 @@
+#ifndef GIM_BOX_COLLISION_H_INCLUDED
+#define GIM_BOX_COLLISION_H_INCLUDED
+
+/*! \file gim_box_collision.h
+\author Francisco Len Nßjera
+*/
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+#include "gim_basic_geometry_operations.h"
+#include "LinearMath/btTransform.h"
+
+
+
+//SIMD_FORCE_INLINE bool test_cross_edge_box(
+//	const btVector3 & edge,
+//	const btVector3 & absolute_edge,
+//	const btVector3 & pointa,
+//	const btVector3 & pointb, const btVector3 & extend,
+//	int dir_index0,
+//	int dir_index1
+//	int component_index0,
+//	int component_index1)
+//{
+//	// dir coords are -z and y
+//
+//	const btScalar dir0 = -edge[dir_index0];
+//	const btScalar dir1 = edge[dir_index1];
+//	btScalar pmin = pointa[component_index0]*dir0 + pointa[component_index1]*dir1;
+//	btScalar pmax = pointb[component_index0]*dir0 + pointb[component_index1]*dir1;
+//	//find minmax
+//	if(pmin>pmax)
+//	{
+//		GIM_SWAP_NUMBERS(pmin,pmax);
+//	}
+//	//find extends
+//	const btScalar rad = extend[component_index0] * absolute_edge[dir_index0] +
+//					extend[component_index1] * absolute_edge[dir_index1];
+//
+//	if(pmin>rad || -rad>pmax) return false;
+//	return true;
+//}
+//
+//SIMD_FORCE_INLINE bool test_cross_edge_box_X_axis(
+//	const btVector3 & edge,
+//	const btVector3 & absolute_edge,
+//	const btVector3 & pointa,
+//	const btVector3 & pointb, btVector3 & extend)
+//{
+//
+//	return test_cross_edge_box(edge,absolute_edge,pointa,pointb,extend,2,1,1,2);
+//}
+//
+//
+//SIMD_FORCE_INLINE bool test_cross_edge_box_Y_axis(
+//	const btVector3 & edge,
+//	const btVector3 & absolute_edge,
+//	const btVector3 & pointa,
+//	const btVector3 & pointb, btVector3 & extend)
+//{
+//
+//	return test_cross_edge_box(edge,absolute_edge,pointa,pointb,extend,0,2,2,0);
+//}
+//
+//SIMD_FORCE_INLINE bool test_cross_edge_box_Z_axis(
+//	const btVector3 & edge,
+//	const btVector3 & absolute_edge,
+//	const btVector3 & pointa,
+//	const btVector3 & pointb, btVector3 & extend)
+//{
+//
+//	return test_cross_edge_box(edge,absolute_edge,pointa,pointb,extend,1,0,0,1);
+//}
+
+#define TEST_CROSS_EDGE_BOX_MCR(edge,absolute_edge,pointa,pointb,_extend,i_dir_0,i_dir_1,i_comp_0,i_comp_1)\
+{\
+	const btScalar dir0 = -edge[i_dir_0];\
+	const btScalar dir1 = edge[i_dir_1];\
+	btScalar pmin = pointa[i_comp_0]*dir0 + pointa[i_comp_1]*dir1;\
+	btScalar pmax = pointb[i_comp_0]*dir0 + pointb[i_comp_1]*dir1;\
+	if(pmin>pmax)\
+	{\
+		GIM_SWAP_NUMBERS(pmin,pmax); \
+	}\
+	const btScalar abs_dir0 = absolute_edge[i_dir_0];\
+	const btScalar abs_dir1 = absolute_edge[i_dir_1];\
+	const btScalar rad = _extend[i_comp_0] * abs_dir0 + _extend[i_comp_1] * abs_dir1;\
+	if(pmin>rad || -rad>pmax) return false;\
+}\
+
+
+#define TEST_CROSS_EDGE_BOX_X_AXIS_MCR(edge,absolute_edge,pointa,pointb,_extend)\
+{\
+	TEST_CROSS_EDGE_BOX_MCR(edge,absolute_edge,pointa,pointb,_extend,2,1,1,2);\
+}\
+
+#define TEST_CROSS_EDGE_BOX_Y_AXIS_MCR(edge,absolute_edge,pointa,pointb,_extend)\
+{\
+	TEST_CROSS_EDGE_BOX_MCR(edge,absolute_edge,pointa,pointb,_extend,0,2,2,0);\
+}\
+
+#define TEST_CROSS_EDGE_BOX_Z_AXIS_MCR(edge,absolute_edge,pointa,pointb,_extend)\
+{\
+	TEST_CROSS_EDGE_BOX_MCR(edge,absolute_edge,pointa,pointb,_extend,1,0,0,1);\
+}\
+
+
+
+//!  Class for transforming a model1 to the space of model0
+class GIM_BOX_BOX_TRANSFORM_CACHE
+{
+public:
+    btVector3  m_T1to0;//!< Transforms translation of model1 to model 0
+	btMatrix3x3 m_R1to0;//!< Transforms Rotation of model1 to model 0, equal  to R0' * R1
+	btMatrix3x3 m_AR;//!< Absolute value of m_R1to0
+
+	SIMD_FORCE_INLINE void calc_absolute_matrix()
+	{
+		static const btVector3 vepsi(1e-6f,1e-6f,1e-6f);
+		m_AR[0] = vepsi + m_R1to0[0].absolute();
+		m_AR[1] = vepsi + m_R1to0[1].absolute();
+		m_AR[2] = vepsi + m_R1to0[2].absolute();
+	}
+
+	GIM_BOX_BOX_TRANSFORM_CACHE()
+	{
+	}
+
+
+	GIM_BOX_BOX_TRANSFORM_CACHE(mat4f  trans1_to_0)
+	{
+		COPY_MATRIX_3X3(m_R1to0,trans1_to_0)
+        MAT_GET_TRANSLATION(trans1_to_0,m_T1to0)
+		calc_absolute_matrix();
+	}
+
+	//! Calc the transformation relative  1 to 0. Inverts matrics by transposing
+	SIMD_FORCE_INLINE void calc_from_homogenic(const btTransform & trans0,const btTransform & trans1)
+	{
+
+		m_R1to0 = trans0.getBasis().transpose();
+		m_T1to0 = m_R1to0 * (-trans0.getOrigin());
+
+		m_T1to0 += m_R1to0*trans1.getOrigin();
+		m_R1to0 *= trans1.getBasis();
+
+		calc_absolute_matrix();
+	}
+
+	//! Calcs the full invertion of the matrices. Useful for scaling matrices
+	SIMD_FORCE_INLINE void calc_from_full_invert(const btTransform & trans0,const btTransform & trans1)
+	{
+		m_R1to0 = trans0.getBasis().inverse();
+		m_T1to0 = m_R1to0 * (-trans0.getOrigin());
+
+		m_T1to0 += m_R1to0*trans1.getOrigin();
+		m_R1to0 *= trans1.getBasis();
+
+		calc_absolute_matrix();
+	}
+
+	SIMD_FORCE_INLINE btVector3 transform(const btVector3 & point)
+	{
+		return btVector3(m_R1to0[0].dot(point) + m_T1to0.x(),
+			m_R1to0[1].dot(point) + m_T1to0.y(),
+			m_R1to0[2].dot(point) + m_T1to0.z());
+	}
+};
+
+
+#define BOX_PLANE_EPSILON 0.000001f
+
+//! Axis aligned box
+class GIM_AABB
+{
+public:
+	btVector3 m_min;
+	btVector3 m_max;
+
+	GIM_AABB()
+	{}
+
+
+	GIM_AABB(const btVector3 & V1,
+			 const btVector3 & V2,
+			 const btVector3 & V3)
+	{
+		m_min[0] = GIM_MIN3(V1[0],V2[0],V3[0]);
+		m_min[1] = GIM_MIN3(V1[1],V2[1],V3[1]);
+		m_min[2] = GIM_MIN3(V1[2],V2[2],V3[2]);
+
+		m_max[0] = GIM_MAX3(V1[0],V2[0],V3[0]);
+		m_max[1] = GIM_MAX3(V1[1],V2[1],V3[1]);
+		m_max[2] = GIM_MAX3(V1[2],V2[2],V3[2]);
+	}
+
+	GIM_AABB(const btVector3 & V1,
+			 const btVector3 & V2,
+			 const btVector3 & V3,
+			 GREAL margin)
+	{
+		m_min[0] = GIM_MIN3(V1[0],V2[0],V3[0]);
+		m_min[1] = GIM_MIN3(V1[1],V2[1],V3[1]);
+		m_min[2] = GIM_MIN3(V1[2],V2[2],V3[2]);
+
+		m_max[0] = GIM_MAX3(V1[0],V2[0],V3[0]);
+		m_max[1] = GIM_MAX3(V1[1],V2[1],V3[1]);
+		m_max[2] = GIM_MAX3(V1[2],V2[2],V3[2]);
+
+		m_min[0] -= margin;
+		m_min[1] -= margin;
+		m_min[2] -= margin;
+		m_max[0] += margin;
+		m_max[1] += margin;
+		m_max[2] += margin;
+	}
+
+	GIM_AABB(const GIM_AABB &other):
+		m_min(other.m_min),m_max(other.m_max)
+	{
+	}
+
+	GIM_AABB(const GIM_AABB &other,btScalar margin ):
+		m_min(other.m_min),m_max(other.m_max)
+	{
+		m_min[0] -= margin;
+		m_min[1] -= margin;
+		m_min[2] -= margin;
+		m_max[0] += margin;
+		m_max[1] += margin;
+		m_max[2] += margin;
+	}
+
+	SIMD_FORCE_INLINE void invalidate()
+	{
+		m_min[0] = G_REAL_INFINITY;
+		m_min[1] = G_REAL_INFINITY;
+		m_min[2] = G_REAL_INFINITY;
+		m_max[0] = -G_REAL_INFINITY;
+		m_max[1] = -G_REAL_INFINITY;
+		m_max[2] = -G_REAL_INFINITY;
+	}
+
+	SIMD_FORCE_INLINE void increment_margin(btScalar margin)
+	{
+		m_min[0] -= margin;
+		m_min[1] -= margin;
+		m_min[2] -= margin;
+		m_max[0] += margin;
+		m_max[1] += margin;
+		m_max[2] += margin;
+	}
+
+	SIMD_FORCE_INLINE void copy_with_margin(const GIM_AABB &other, btScalar margin)
+	{
+		m_min[0] = other.m_min[0] - margin;
+		m_min[1] = other.m_min[1] - margin;
+		m_min[2] = other.m_min[2] - margin;
+
+		m_max[0] = other.m_max[0] + margin;
+		m_max[1] = other.m_max[1] + margin;
+		m_max[2] = other.m_max[2] + margin;
+	}
+
+	template<typename CLASS_POINT>
+	SIMD_FORCE_INLINE void calc_from_triangle(
+							const CLASS_POINT & V1,
+							const CLASS_POINT & V2,
+							const CLASS_POINT & V3)
+	{
+		m_min[0] = GIM_MIN3(V1[0],V2[0],V3[0]);
+		m_min[1] = GIM_MIN3(V1[1],V2[1],V3[1]);
+		m_min[2] = GIM_MIN3(V1[2],V2[2],V3[2]);
+
+		m_max[0] = GIM_MAX3(V1[0],V2[0],V3[0]);
+		m_max[1] = GIM_MAX3(V1[1],V2[1],V3[1]);
+		m_max[2] = GIM_MAX3(V1[2],V2[2],V3[2]);
+	}
+
+	template<typename CLASS_POINT>
+	SIMD_FORCE_INLINE void calc_from_triangle_margin(
+							const CLASS_POINT & V1,
+							const CLASS_POINT & V2,
+							const CLASS_POINT & V3, btScalar margin)
+	{
+		m_min[0] = GIM_MIN3(V1[0],V2[0],V3[0]);
+		m_min[1] = GIM_MIN3(V1[1],V2[1],V3[1]);
+		m_min[2] = GIM_MIN3(V1[2],V2[2],V3[2]);
+
+		m_max[0] = GIM_MAX3(V1[0],V2[0],V3[0]);
+		m_max[1] = GIM_MAX3(V1[1],V2[1],V3[1]);
+		m_max[2] = GIM_MAX3(V1[2],V2[2],V3[2]);
+
+		m_min[0] -= margin;
+		m_min[1] -= margin;
+		m_min[2] -= margin;
+		m_max[0] += margin;
+		m_max[1] += margin;
+		m_max[2] += margin;
+	}
+
+	//! Apply a transform to an AABB
+	SIMD_FORCE_INLINE void appy_transform(const btTransform & trans)
+	{
+		btVector3 center = (m_max+m_min)*0.5f;
+		btVector3 extends = m_max - center;
+		// Compute new center
+		center = trans(center);
+
+		btVector3 textends(extends.dot(trans.getBasis().getRow(0).absolute()),
+ 				 extends.dot(trans.getBasis().getRow(1).absolute()),
+				 extends.dot(trans.getBasis().getRow(2).absolute()));
+
+		m_min = center - textends;
+		m_max = center + textends;
+	}
+
+	//! Merges a Box
+	SIMD_FORCE_INLINE void merge(const GIM_AABB & box)
+	{
+		m_min[0] = GIM_MIN(m_min[0],box.m_min[0]);
+		m_min[1] = GIM_MIN(m_min[1],box.m_min[1]);
+		m_min[2] = GIM_MIN(m_min[2],box.m_min[2]);
+
+		m_max[0] = GIM_MAX(m_max[0],box.m_max[0]);
+		m_max[1] = GIM_MAX(m_max[1],box.m_max[1]);
+		m_max[2] = GIM_MAX(m_max[2],box.m_max[2]);
+	}
+
+	//! Merges a point
+	template<typename CLASS_POINT>
+	SIMD_FORCE_INLINE void merge_point(const CLASS_POINT & point)
+	{
+		m_min[0] = GIM_MIN(m_min[0],point[0]);
+		m_min[1] = GIM_MIN(m_min[1],point[1]);
+		m_min[2] = GIM_MIN(m_min[2],point[2]);
+
+		m_max[0] = GIM_MAX(m_max[0],point[0]);
+		m_max[1] = GIM_MAX(m_max[1],point[1]);
+		m_max[2] = GIM_MAX(m_max[2],point[2]);
+	}
+
+	//! Gets the extend and center
+	SIMD_FORCE_INLINE void get_center_extend(btVector3 & center,btVector3 & extend)  const
+	{
+		center = (m_max+m_min)*0.5f;
+		extend = m_max - center;
+	}
+
+	//! Finds the intersecting box between this box and the other.
+	SIMD_FORCE_INLINE void find_intersection(const GIM_AABB & other, GIM_AABB & intersection)  const
+	{
+		intersection.m_min[0] = GIM_MAX(other.m_min[0],m_min[0]);
+		intersection.m_min[1] = GIM_MAX(other.m_min[1],m_min[1]);
+		intersection.m_min[2] = GIM_MAX(other.m_min[2],m_min[2]);
+
+		intersection.m_max[0] = GIM_MIN(other.m_max[0],m_max[0]);
+		intersection.m_max[1] = GIM_MIN(other.m_max[1],m_max[1]);
+		intersection.m_max[2] = GIM_MIN(other.m_max[2],m_max[2]);
+	}
+
+
+	SIMD_FORCE_INLINE bool has_collision(const GIM_AABB & other) const
+	{
+		if(m_min[0] > other.m_max[0] ||
+		   m_max[0] < other.m_min[0] ||
+		   m_min[1] > other.m_max[1] ||
+		   m_max[1] < other.m_min[1] ||
+		   m_min[2] > other.m_max[2] ||
+		   m_max[2] < other.m_min[2])
+		{
+			return false;
+		}
+		return true;
+	}
+
+	/*! \brief Finds the Ray intersection parameter.
+	\param aabb Aligned box
+	\param vorigin A vec3f with the origin of the ray
+	\param vdir A vec3f with the direction of the ray
+	*/
+	SIMD_FORCE_INLINE bool collide_ray(const btVector3 & vorigin,const btVector3 & vdir)
+	{
+		btVector3 extents,center;
+		this->get_center_extend(center,extents);;
+
+		btScalar Dx = vorigin[0] - center[0];
+		if(GIM_GREATER(Dx, extents[0]) && Dx*vdir[0]>=0.0f)	return false;
+		btScalar Dy = vorigin[1] - center[1];
+		if(GIM_GREATER(Dy, extents[1]) && Dy*vdir[1]>=0.0f)	return false;
+		btScalar Dz = vorigin[2] - center[2];
+		if(GIM_GREATER(Dz, extents[2]) && Dz*vdir[2]>=0.0f)	return false;
+
+
+		btScalar f = vdir[1] * Dz - vdir[2] * Dy;
+		if(btFabs(f) > extents[1]*btFabs(vdir[2]) + extents[2]*btFabs(vdir[1])) return false;
+		f = vdir[2] * Dx - vdir[0] * Dz;
+		if(btFabs(f) > extents[0]*btFabs(vdir[2]) + extents[2]*btFabs(vdir[0]))return false;
+		f = vdir[0] * Dy - vdir[1] * Dx;
+		if(btFabs(f) > extents[0]*btFabs(vdir[1]) + extents[1]*btFabs(vdir[0]))return false;
+		return true;
+	}
+
+
+	SIMD_FORCE_INLINE void projection_interval(const btVector3 & direction, btScalar &vmin, btScalar &vmax) const
+	{
+		btVector3 center = (m_max+m_min)*0.5f;
+		btVector3 extend = m_max-center;
+
+		btScalar _fOrigin =  direction.dot(center);
+		btScalar _fMaximumExtent = extend.dot(direction.absolute());
+		vmin = _fOrigin - _fMaximumExtent;
+		vmax = _fOrigin + _fMaximumExtent;
+	}
+
+	SIMD_FORCE_INLINE ePLANE_INTERSECTION_TYPE plane_classify(const btVector4 &plane) const
+	{
+		btScalar _fmin,_fmax;
+		this->projection_interval(plane,_fmin,_fmax);
+
+		if(plane[3] > _fmax + BOX_PLANE_EPSILON)
+		{
+			return G_BACK_PLANE; // 0
+		}
+
+		if(plane[3]+BOX_PLANE_EPSILON >=_fmin)
+		{
+			return G_COLLIDE_PLANE; //1
+		}
+		return G_FRONT_PLANE;//2
+	}
+
+	SIMD_FORCE_INLINE bool overlapping_trans_conservative(const GIM_AABB & box, btTransform & trans1_to_0)
+	{
+		GIM_AABB tbox = box;
+		tbox.appy_transform(trans1_to_0);
+		return has_collision(tbox);
+	}
+
+	//! transcache is the transformation cache from box to this AABB
+	SIMD_FORCE_INLINE bool overlapping_trans_cache(
+		const GIM_AABB & box,const GIM_BOX_BOX_TRANSFORM_CACHE & transcache, bool fulltest)
+	{
+
+		//Taken from OPCODE
+		btVector3 ea,eb;//extends
+		btVector3 ca,cb;//extends
+		get_center_extend(ca,ea);
+		box.get_center_extend(cb,eb);
+
+
+		btVector3 T;
+		btScalar t,t2;
+		int i;
+
+		// Class I : A's basis vectors
+		for(i=0;i<3;i++)
+		{
+			T[i] =  transcache.m_R1to0[i].dot(cb) + transcache.m_T1to0[i] - ca[i];
+			t = transcache.m_AR[i].dot(eb) + ea[i];
+			if(GIM_GREATER(T[i], t))	return false;
+		}
+		// Class II : B's basis vectors
+		for(i=0;i<3;i++)
+		{
+			t = MAT_DOT_COL(transcache.m_R1to0,T,i);
+			t2 = MAT_DOT_COL(transcache.m_AR,ea,i) + eb[i];
+			if(GIM_GREATER(t,t2))	return false;
+		}
+		// Class III : 9 cross products
+		if(fulltest)
+		{
+			int j,m,n,o,p,q,r;
+			for(i=0;i<3;i++)
+			{
+				m = (i+1)%3;
+				n = (i+2)%3;
+				o = i==0?1:0;
+				p = i==2?1:2;
+				for(j=0;j<3;j++)
+				{
+					q = j==2?1:2;
+					r = j==0?1:0;
+					t = T[n]*transcache.m_R1to0[m][j] - T[m]*transcache.m_R1to0[n][j];
+					t2 = ea[o]*transcache.m_AR[p][j] + ea[p]*transcache.m_AR[o][j] +
+						eb[r]*transcache.m_AR[i][q] + eb[q]*transcache.m_AR[i][r];
+					if(GIM_GREATER(t,t2))	return false;
+				}
+			}
+		}
+		return true;
+	}
+
+	//! Simple test for planes.
+	SIMD_FORCE_INLINE bool collide_plane(
+		const btVector4 & plane)
+	{
+		ePLANE_INTERSECTION_TYPE classify = plane_classify(plane);
+		return (classify == G_COLLIDE_PLANE);
+	}
+
+	//! test for a triangle, with edges
+	SIMD_FORCE_INLINE bool collide_triangle_exact(
+		const btVector3 & p1,
+		const btVector3 & p2,
+		const btVector3 & p3,
+		const btVector4 & triangle_plane)
+	{
+		if(!collide_plane(triangle_plane)) return false;
+
+		btVector3 center,extends;
+		this->get_center_extend(center,extends);
+
+		const btVector3 v1(p1 - center);
+		const btVector3 v2(p2 - center);
+		const btVector3 v3(p3 - center);
+
+		//First axis
+		btVector3 diff(v2 - v1);
+		btVector3 abs_diff = diff.absolute();
+		//Test With X axis
+		TEST_CROSS_EDGE_BOX_X_AXIS_MCR(diff,abs_diff,v1,v3,extends);
+		//Test With Y axis
+		TEST_CROSS_EDGE_BOX_Y_AXIS_MCR(diff,abs_diff,v1,v3,extends);
+		//Test With Z axis
+		TEST_CROSS_EDGE_BOX_Z_AXIS_MCR(diff,abs_diff,v1,v3,extends);
+
+
+		diff = v3 - v2;
+		abs_diff = diff.absolute();
+		//Test With X axis
+		TEST_CROSS_EDGE_BOX_X_AXIS_MCR(diff,abs_diff,v2,v1,extends);
+		//Test With Y axis
+		TEST_CROSS_EDGE_BOX_Y_AXIS_MCR(diff,abs_diff,v2,v1,extends);
+		//Test With Z axis
+		TEST_CROSS_EDGE_BOX_Z_AXIS_MCR(diff,abs_diff,v2,v1,extends);
+
+		diff = v1 - v3;
+		abs_diff = diff.absolute();
+		//Test With X axis
+		TEST_CROSS_EDGE_BOX_X_AXIS_MCR(diff,abs_diff,v3,v2,extends);
+		//Test With Y axis
+		TEST_CROSS_EDGE_BOX_Y_AXIS_MCR(diff,abs_diff,v3,v2,extends);
+		//Test With Z axis
+		TEST_CROSS_EDGE_BOX_Z_AXIS_MCR(diff,abs_diff,v3,v2,extends);
+
+		return true;
+	}
+};
+
+
+//! Compairison of transformation objects
+SIMD_FORCE_INLINE bool btCompareTransformsEqual(const btTransform & t1,const btTransform & t2)
+{
+	if(!(t1.getOrigin() == t2.getOrigin()) ) return false;
+
+	if(!(t1.getBasis().getRow(0) == t2.getBasis().getRow(0)) ) return false;
+	if(!(t1.getBasis().getRow(1) == t2.getBasis().getRow(1)) ) return false;
+	if(!(t1.getBasis().getRow(2) == t2.getBasis().getRow(2)) ) return false;
+	return true;
+}
+
+
+
+#endif // GIM_BOX_COLLISION_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_box_set.cpp
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_box_set.cpp	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_box_set.cpp	(revision 2431)
@@ -0,0 +1,182 @@
+
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+
+#include "gim_box_set.h"
+
+
+GUINT GIM_BOX_TREE::_calc_splitting_axis(
+	gim_array<GIM_AABB_DATA> & primitive_boxes, GUINT startIndex,  GUINT endIndex)
+{
+	GUINT i;
+
+	btVector3 means(btScalar(0.),btScalar(0.),btScalar(0.));
+	btVector3 variance(btScalar(0.),btScalar(0.),btScalar(0.));
+	GUINT numIndices = endIndex-startIndex;
+
+	for (i=startIndex;i<endIndex;i++)
+	{
+		btVector3 center = btScalar(0.5)*(primitive_boxes[i].m_bound.m_max +
+					 primitive_boxes[i].m_bound.m_min);
+		means+=center;
+	}
+	means *= (btScalar(1.)/(btScalar)numIndices);
+
+	for (i=startIndex;i<endIndex;i++)
+	{
+		btVector3 center = btScalar(0.5)*(primitive_boxes[i].m_bound.m_max +
+					 primitive_boxes[i].m_bound.m_min);
+		btVector3 diff2 = center-means;
+		diff2 = diff2 * diff2;
+		variance += diff2;
+	}
+	variance *= (btScalar(1.)/	((btScalar)numIndices-1)	);
+
+	return variance.maxAxis();
+}
+
+
+GUINT GIM_BOX_TREE::_sort_and_calc_splitting_index(
+	gim_array<GIM_AABB_DATA> & primitive_boxes, GUINT startIndex,
+	GUINT endIndex, GUINT splitAxis)
+{
+	GUINT i;
+	GUINT splitIndex =startIndex;
+	GUINT numIndices = endIndex - startIndex;
+
+	// average of centers
+	btScalar splitValue = 0.0f;
+	for (i=startIndex;i<endIndex;i++)
+	{
+		splitValue+= 0.5f*(primitive_boxes[i].m_bound.m_max[splitAxis] +
+					 primitive_boxes[i].m_bound.m_min[splitAxis]);
+	}
+	splitValue /= (btScalar)numIndices;
+
+	//sort leafNodes so all values larger then splitValue comes first, and smaller values start from 'splitIndex'.
+	for (i=startIndex;i<endIndex;i++)
+	{
+		btScalar center = 0.5f*(primitive_boxes[i].m_bound.m_max[splitAxis] +
+					 primitive_boxes[i].m_bound.m_min[splitAxis]);
+		if (center > splitValue)
+		{
+			//swap
+			primitive_boxes.swap(i,splitIndex);
+			splitIndex++;
+		}
+	}
+
+	//if the splitIndex causes unbalanced trees, fix this by using the center in between startIndex and endIndex
+	//otherwise the tree-building might fail due to stack-overflows in certain cases.
+	//unbalanced1 is unsafe: it can cause stack overflows
+	//bool unbalanced1 = ((splitIndex==startIndex) || (splitIndex == (endIndex-1)));
+
+	//unbalanced2 should work too: always use center (perfect balanced trees)
+	//bool unbalanced2 = true;
+
+	//this should be safe too:
+	GUINT rangeBalancedIndices = numIndices/3;
+	bool unbalanced = ((splitIndex<=(startIndex+rangeBalancedIndices)) || (splitIndex >=(endIndex-1-rangeBalancedIndices)));
+
+	if (unbalanced)
+	{
+		splitIndex = startIndex+ (numIndices>>1);
+	}
+
+	bool unbal = (splitIndex==startIndex) || (splitIndex == (endIndex));
+	btAssert(!unbal);
+
+	return splitIndex;
+}
+
+
+void GIM_BOX_TREE::_build_sub_tree(gim_array<GIM_AABB_DATA> & primitive_boxes, GUINT startIndex,  GUINT endIndex)
+{
+	GUINT current_index = m_num_nodes++;
+
+	btAssert((endIndex-startIndex)>0);
+
+	if((endIndex-startIndex) == 1) //we got a leaf
+	{		
+		m_node_array[current_index].m_left = 0;
+		m_node_array[current_index].m_right = 0;
+		m_node_array[current_index].m_escapeIndex = 0;
+
+		m_node_array[current_index].m_bound = primitive_boxes[startIndex].m_bound;
+		m_node_array[current_index].m_data = primitive_boxes[startIndex].m_data;
+		return;
+	}
+
+	//configure inner node
+
+	GUINT splitIndex;
+
+	//calc this node bounding box
+	m_node_array[current_index].m_bound.invalidate();	
+	for (splitIndex=startIndex;splitIndex<endIndex;splitIndex++)
+	{
+		m_node_array[current_index].m_bound.merge(primitive_boxes[splitIndex].m_bound);
+	}
+
+	//calculate Best Splitting Axis and where to split it. Sort the incoming 'leafNodes' array within range 'startIndex/endIndex'.
+
+	//split axis
+	splitIndex = _calc_splitting_axis(primitive_boxes,startIndex,endIndex);
+
+	splitIndex = _sort_and_calc_splitting_index(
+			primitive_boxes,startIndex,endIndex,splitIndex);
+
+	//configure this inner node : the left node index
+	m_node_array[current_index].m_left = m_num_nodes;
+	//build left child tree
+	_build_sub_tree(primitive_boxes, startIndex, splitIndex );
+
+	//configure this inner node : the right node index
+	m_node_array[current_index].m_right = m_num_nodes;
+
+	//build right child tree
+	_build_sub_tree(primitive_boxes, splitIndex ,endIndex);
+
+	//configure this inner node : the escape index
+	m_node_array[current_index].m_escapeIndex  = m_num_nodes - current_index;
+}
+
+//! stackless build tree
+void GIM_BOX_TREE::build_tree(
+	gim_array<GIM_AABB_DATA> & primitive_boxes)
+{
+	// initialize node count to 0
+	m_num_nodes = 0;
+	// allocate nodes
+	m_node_array.resize(primitive_boxes.size()*2);
+	
+	_build_sub_tree(primitive_boxes, 0, primitive_boxes.size());
+}
+
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_box_set.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_box_set.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_box_set.h	(revision 2431)
@@ -0,0 +1,671 @@
+#ifndef GIM_BOX_SET_H_INCLUDED
+#define GIM_BOX_SET_H_INCLUDED
+
+/*! \file gim_box_set.h
+\author Francisco Len Nßjera
+*/
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+
+#include "gim_array.h"
+#include "gim_radixsort.h"
+#include "gim_box_collision.h"
+#include "gim_tri_collision.h"
+
+
+
+//! Overlapping pair
+struct GIM_PAIR
+{
+    GUINT m_index1;
+    GUINT m_index2;
+    GIM_PAIR()
+    {}
+
+    GIM_PAIR(const GIM_PAIR & p)
+    {
+    	m_index1 = p.m_index1;
+    	m_index2 = p.m_index2;
+	}
+
+	GIM_PAIR(GUINT index1, GUINT index2)
+    {
+    	m_index1 = index1;
+    	m_index2 = index2;
+	}
+};
+
+//! A pairset array
+class gim_pair_set: public gim_array<GIM_PAIR>
+{
+public:
+	gim_pair_set():gim_array<GIM_PAIR>(32)
+	{
+	}
+	inline void push_pair(GUINT index1,GUINT index2)
+	{
+		push_back(GIM_PAIR(index1,index2));
+	}
+
+	inline void push_pair_inv(GUINT index1,GUINT index2)
+	{
+		push_back(GIM_PAIR(index2,index1));
+	}
+};
+
+
+//! Prototype Base class for primitive classification
+/*!
+This class is a wrapper for primitive collections.
+This tells relevant info for the Bounding Box set classes, which take care of space classification.
+This class can manage Compound shapes and trimeshes, and if it is managing trimesh then the  Hierarchy Bounding Box classes will take advantage of primitive Vs Box overlapping tests for getting optimal results and less Per Box compairisons.
+*/
+class GIM_PRIMITIVE_MANAGER_PROTOTYPE
+{
+public:
+
+	//! determines if this manager consist on only triangles, which special case will be optimized
+	virtual bool is_trimesh() = 0;
+	virtual GUINT get_primitive_count() = 0;
+	virtual void get_primitive_box(GUINT prim_index ,GIM_AABB & primbox) = 0;
+	virtual void get_primitive_triangle(GUINT prim_index,GIM_TRIANGLE & triangle) = 0;
+};
+
+
+struct GIM_AABB_DATA
+{
+	GIM_AABB m_bound;
+	GUINT m_data;
+};
+
+//! Node Structure for trees
+struct GIM_BOX_TREE_NODE
+{
+	GIM_AABB m_bound;
+	GUINT m_left;//!< Left subtree
+	GUINT m_right;//!< Right subtree
+	GUINT m_escapeIndex;//!< Scape index for traversing
+	GUINT m_data;//!< primitive index if apply
+
+	GIM_BOX_TREE_NODE()
+	{
+	    m_left = 0;
+	    m_right = 0;
+	    m_escapeIndex = 0;
+	    m_data = 0;
+	}
+
+	SIMD_FORCE_INLINE bool is_leaf_node() const
+	{
+	    return  (!m_left && !m_right);
+	}
+};
+
+//! Basic Box tree structure
+class GIM_BOX_TREE
+{
+protected:
+	GUINT m_num_nodes;
+	gim_array<GIM_BOX_TREE_NODE> m_node_array;
+protected:
+	GUINT _sort_and_calc_splitting_index(
+		gim_array<GIM_AABB_DATA> & primitive_boxes,
+		 GUINT startIndex,  GUINT endIndex, GUINT splitAxis);
+
+	GUINT _calc_splitting_axis(gim_array<GIM_AABB_DATA> & primitive_boxes, GUINT startIndex,  GUINT endIndex);
+
+	void _build_sub_tree(gim_array<GIM_AABB_DATA> & primitive_boxes, GUINT startIndex,  GUINT endIndex);
+public:
+	GIM_BOX_TREE()
+	{
+		m_num_nodes = 0;
+	}
+
+	//! prototype functions for box tree management
+	//!@{
+	void build_tree(gim_array<GIM_AABB_DATA> & primitive_boxes);
+
+	SIMD_FORCE_INLINE void clearNodes()
+	{
+		m_node_array.clear();
+		m_num_nodes = 0;
+	}
+
+	//! node count
+	SIMD_FORCE_INLINE GUINT getNodeCount() const
+	{
+		return m_num_nodes;
+	}
+
+	//! tells if the node is a leaf
+	SIMD_FORCE_INLINE bool isLeafNode(GUINT nodeindex) const
+	{
+		return m_node_array[nodeindex].is_leaf_node();
+	}
+
+	SIMD_FORCE_INLINE GUINT getNodeData(GUINT nodeindex) const
+	{
+		return m_node_array[nodeindex].m_data;
+	}
+
+	SIMD_FORCE_INLINE void getNodeBound(GUINT nodeindex, GIM_AABB & bound) const
+	{
+		bound = m_node_array[nodeindex].m_bound;
+	}
+
+	SIMD_FORCE_INLINE void setNodeBound(GUINT nodeindex, const GIM_AABB & bound)
+	{
+		m_node_array[nodeindex].m_bound = bound;
+	}
+
+	SIMD_FORCE_INLINE GUINT getLeftNodeIndex(GUINT nodeindex)  const
+	{
+		return m_node_array[nodeindex].m_left;
+	}
+
+	SIMD_FORCE_INLINE GUINT getRightNodeIndex(GUINT nodeindex)  const
+	{
+		return m_node_array[nodeindex].m_right;
+	}
+
+	SIMD_FORCE_INLINE GUINT getScapeNodeIndex(GUINT nodeindex) const
+	{
+		return m_node_array[nodeindex].m_escapeIndex;
+	}
+
+	//!@}
+};
+
+
+//! Generic Box Tree Template
+/*!
+This class offers an structure for managing a box tree of primitives.
+Requires a Primitive prototype (like GIM_PRIMITIVE_MANAGER_PROTOTYPE ) and
+a Box tree structure ( like GIM_BOX_TREE).
+*/
+template<typename _GIM_PRIMITIVE_MANAGER_PROTOTYPE, typename _GIM_BOX_TREE_PROTOTYPE>
+class GIM_BOX_TREE_TEMPLATE_SET
+{
+protected:
+	_GIM_PRIMITIVE_MANAGER_PROTOTYPE m_primitive_manager;
+	_GIM_BOX_TREE_PROTOTYPE m_box_tree;
+protected:
+	//stackless refit
+	SIMD_FORCE_INLINE void refit()
+	{
+		GUINT nodecount = getNodeCount();
+		while(nodecount--)
+		{
+			if(isLeafNode(nodecount))
+			{
+				GIM_AABB leafbox;
+				m_primitive_manager.get_primitive_box(getNodeData(nodecount),leafbox);
+				setNodeBound(nodecount,leafbox);
+			}
+			else
+			{
+				//get left bound
+				GUINT childindex = getLeftNodeIndex(nodecount);
+				GIM_AABB bound;
+				getNodeBound(childindex,bound);
+				//get right bound
+				childindex = getRightNodeIndex(nodecount);
+				GIM_AABB bound2;
+				getNodeBound(childindex,bound2);
+				bound.merge(bound2);
+
+				setNodeBound(nodecount,bound);
+			}
+		}
+	}
+public:
+
+	GIM_BOX_TREE_TEMPLATE_SET()
+	{
+	}
+
+	SIMD_FORCE_INLINE GIM_AABB getGlobalBox()  const
+	{
+		GIM_AABB totalbox;
+		getNodeBound(0, totalbox);
+		return totalbox;
+	}
+
+	SIMD_FORCE_INLINE void setPrimitiveManager(const _GIM_PRIMITIVE_MANAGER_PROTOTYPE & primitive_manager)
+	{
+		m_primitive_manager = primitive_manager;
+	}
+
+	const _GIM_PRIMITIVE_MANAGER_PROTOTYPE & getPrimitiveManager() const
+	{
+		return m_primitive_manager;
+	}
+
+	_GIM_PRIMITIVE_MANAGER_PROTOTYPE & getPrimitiveManager()
+	{
+		return m_primitive_manager;
+	}
+
+//! node manager prototype functions
+///@{
+
+	//! this attemps to refit the box set.
+	SIMD_FORCE_INLINE void update()
+	{
+		refit();
+	}
+
+	//! this rebuild the entire set
+	SIMD_FORCE_INLINE void buildSet()
+	{
+		//obtain primitive boxes
+		gim_array<GIM_AABB_DATA> primitive_boxes;
+		primitive_boxes.resize(m_primitive_manager.get_primitive_count(),false);
+
+		for (GUINT i = 0;i<primitive_boxes.size() ;i++ )
+		{
+			 m_primitive_manager.get_primitive_box(i,primitive_boxes[i].m_bound);
+			 primitive_boxes[i].m_data = i;
+		}
+
+		m_box_tree.build_tree(primitive_boxes);
+	}
+
+	//! returns the indices of the primitives in the m_primitive_manager
+	SIMD_FORCE_INLINE bool boxQuery(const GIM_AABB & box, gim_array<GUINT> & collided_results) const
+	{
+		GUINT curIndex = 0;
+		GUINT numNodes = getNodeCount();
+
+		while (curIndex < numNodes)
+		{
+			GIM_AABB bound;
+			getNodeBound(curIndex,bound);
+
+			//catch bugs in tree data
+
+			bool aabbOverlap = bound.has_collision(box);
+			bool isleafnode = isLeafNode(curIndex);
+
+			if (isleafnode && aabbOverlap)
+			{
+				collided_results.push_back(getNodeData(curIndex));
+			}
+
+			if (aabbOverlap || isleafnode)
+			{
+				//next subnode
+				curIndex++;
+			}
+			else
+			{
+				//skip node
+				curIndex+= getScapeNodeIndex(curIndex);
+			}
+		}
+		if(collided_results.size()>0) return true;
+		return false;
+	}
+
+	//! returns the indices of the primitives in the m_primitive_manager
+	SIMD_FORCE_INLINE bool boxQueryTrans(const GIM_AABB & box,
+		 const btTransform & transform, gim_array<GUINT> & collided_results) const
+	{
+		GIM_AABB transbox=box;
+		transbox.appy_transform(transform);
+		return boxQuery(transbox,collided_results);
+	}
+
+	//! returns the indices of the primitives in the m_primitive_manager
+	SIMD_FORCE_INLINE bool rayQuery(
+		const btVector3 & ray_dir,const btVector3 & ray_origin ,
+		gim_array<GUINT> & collided_results) const
+	{
+		GUINT curIndex = 0;
+		GUINT numNodes = getNodeCount();
+
+		while (curIndex < numNodes)
+		{
+			GIM_AABB bound;
+			getNodeBound(curIndex,bound);
+
+			//catch bugs in tree data
+
+			bool aabbOverlap = bound.collide_ray(ray_origin,ray_dir);
+			bool isleafnode = isLeafNode(curIndex);
+
+			if (isleafnode && aabbOverlap)
+			{
+				collided_results.push_back(getNodeData( curIndex));
+			}
+
+			if (aabbOverlap || isleafnode)
+			{
+				//next subnode
+				curIndex++;
+			}
+			else
+			{
+				//skip node
+				curIndex+= getScapeNodeIndex(curIndex);
+			}
+		}
+		if(collided_results.size()>0) return true;
+		return false;
+	}
+
+	//! tells if this set has hierarcht
+	SIMD_FORCE_INLINE bool hasHierarchy() const
+	{
+		return true;
+	}
+
+	//! tells if this set is a trimesh
+	SIMD_FORCE_INLINE bool isTrimesh()  const
+	{
+		return m_primitive_manager.is_trimesh();
+	}
+
+	//! node count
+	SIMD_FORCE_INLINE GUINT getNodeCount() const
+	{
+		return m_box_tree.getNodeCount();
+	}
+
+	//! tells if the node is a leaf
+	SIMD_FORCE_INLINE bool isLeafNode(GUINT nodeindex) const
+	{
+		return m_box_tree.isLeafNode(nodeindex);
+	}
+
+	SIMD_FORCE_INLINE GUINT getNodeData(GUINT nodeindex) const
+	{
+		return m_box_tree.getNodeData(nodeindex);
+	}
+
+	SIMD_FORCE_INLINE void getNodeBound(GUINT nodeindex, GIM_AABB & bound)  const
+	{
+		m_box_tree.getNodeBound(nodeindex, bound);
+	}
+
+	SIMD_FORCE_INLINE void setNodeBound(GUINT nodeindex, const GIM_AABB & bound)
+	{
+		m_box_tree.setNodeBound(nodeindex, bound);
+	}
+
+	SIMD_FORCE_INLINE GUINT getLeftNodeIndex(GUINT nodeindex) const
+	{
+		return m_box_tree.getLeftNodeIndex(nodeindex);
+	}
+
+	SIMD_FORCE_INLINE GUINT getRightNodeIndex(GUINT nodeindex) const
+	{
+		return m_box_tree.getRightNodeIndex(nodeindex);
+	}
+
+	SIMD_FORCE_INLINE GUINT getScapeNodeIndex(GUINT nodeindex) const
+	{
+		return m_box_tree.getScapeNodeIndex(nodeindex);
+	}
+
+	SIMD_FORCE_INLINE void getNodeTriangle(GUINT nodeindex,GIM_TRIANGLE & triangle) const
+	{
+		m_primitive_manager.get_primitive_triangle(getNodeData(nodeindex),triangle);
+	}
+
+};
+
+//! Class for Box Tree Sets
+/*!
+this has the GIM_BOX_TREE implementation for bounding boxes.
+*/
+template<typename _GIM_PRIMITIVE_MANAGER_PROTOTYPE>
+class GIM_BOX_TREE_SET: public GIM_BOX_TREE_TEMPLATE_SET< _GIM_PRIMITIVE_MANAGER_PROTOTYPE, GIM_BOX_TREE>
+{
+public:
+
+};
+
+
+
+
+
+/// GIM_BOX_SET collision methods
+template<typename BOX_SET_CLASS0,typename BOX_SET_CLASS1>
+class GIM_TREE_TREE_COLLIDER
+{
+public:
+	gim_pair_set * m_collision_pairs;
+	BOX_SET_CLASS0 * m_boxset0;
+	BOX_SET_CLASS1 * m_boxset1;
+	GUINT current_node0;
+	GUINT current_node1;
+	bool node0_is_leaf;
+	bool node1_is_leaf;
+	bool t0_is_trimesh;
+	bool t1_is_trimesh;
+	bool node0_has_triangle;
+	bool node1_has_triangle;
+	GIM_AABB m_box0;
+	GIM_AABB m_box1;
+	GIM_BOX_BOX_TRANSFORM_CACHE trans_cache_1to0;
+	btTransform trans_cache_0to1;
+	GIM_TRIANGLE m_tri0;
+	btVector4 m_tri0_plane;
+	GIM_TRIANGLE m_tri1;
+	btVector4 m_tri1_plane;
+
+
+public:
+	GIM_TREE_TREE_COLLIDER()
+	{
+		current_node0 = G_UINT_INFINITY;
+		current_node1 = G_UINT_INFINITY;
+	}
+protected:
+	SIMD_FORCE_INLINE void retrieve_node0_triangle(GUINT node0)
+	{
+		if(node0_has_triangle) return;
+		m_boxset0->getNodeTriangle(node0,m_tri0);
+		//transform triangle
+		m_tri0.m_vertices[0] = trans_cache_0to1(m_tri0.m_vertices[0]);
+		m_tri0.m_vertices[1] = trans_cache_0to1(m_tri0.m_vertices[1]);
+		m_tri0.m_vertices[2] = trans_cache_0to1(m_tri0.m_vertices[2]);
+		m_tri0.get_plane(m_tri0_plane);
+
+		node0_has_triangle = true;
+	}
+
+	SIMD_FORCE_INLINE void retrieve_node1_triangle(GUINT node1)
+	{
+		if(node1_has_triangle) return;
+		m_boxset1->getNodeTriangle(node1,m_tri1);
+		//transform triangle
+		m_tri1.m_vertices[0] = trans_cache_1to0.transform(m_tri1.m_vertices[0]);
+		m_tri1.m_vertices[1] = trans_cache_1to0.transform(m_tri1.m_vertices[1]);
+		m_tri1.m_vertices[2] = trans_cache_1to0.transform(m_tri1.m_vertices[2]);
+		m_tri1.get_plane(m_tri1_plane);
+
+		node1_has_triangle = true;
+	}
+
+	SIMD_FORCE_INLINE void retrieve_node0_info(GUINT node0)
+	{
+		if(node0 == current_node0) return;
+		m_boxset0->getNodeBound(node0,m_box0);
+		node0_is_leaf = m_boxset0->isLeafNode(node0);
+		node0_has_triangle = false;
+		current_node0 = node0;
+	}
+
+	SIMD_FORCE_INLINE void retrieve_node1_info(GUINT node1)
+	{
+		if(node1 == current_node1) return;
+		m_boxset1->getNodeBound(node1,m_box1);
+		node1_is_leaf = m_boxset1->isLeafNode(node1);
+		node1_has_triangle = false;
+		current_node1 = node1;
+	}
+
+	SIMD_FORCE_INLINE bool node_collision(GUINT node0 ,GUINT node1)
+	{
+		retrieve_node0_info(node0);
+		retrieve_node1_info(node1);
+		bool result = m_box0.overlapping_trans_cache(m_box1,trans_cache_1to0,true);
+		if(!result) return false;
+
+		if(t0_is_trimesh && node0_is_leaf)
+		{
+			//perform primitive vs box collision
+			retrieve_node0_triangle(node0);
+			//do triangle vs box collision
+			m_box1.increment_margin(m_tri0.m_margin);
+
+			result = m_box1.collide_triangle_exact(
+				m_tri0.m_vertices[0],m_tri0.m_vertices[1],m_tri0.m_vertices[2],m_tri0_plane);
+
+			m_box1.increment_margin(-m_tri0.m_margin);
+
+			if(!result) return false;
+			return true;
+		}
+		else if(t1_is_trimesh && node1_is_leaf)
+		{
+			//perform primitive vs box collision
+			retrieve_node1_triangle(node1);
+			//do triangle vs box collision
+			m_box0.increment_margin(m_tri1.m_margin);
+
+			result = m_box0.collide_triangle_exact(
+				m_tri1.m_vertices[0],m_tri1.m_vertices[1],m_tri1.m_vertices[2],m_tri1_plane);
+
+			m_box0.increment_margin(-m_tri1.m_margin);
+
+			if(!result) return false;
+			return true;
+		}
+		return true;
+	}
+
+	//stackless collision routine
+	void find_collision_pairs()
+	{
+		gim_pair_set stack_collisions;
+		stack_collisions.reserve(32);
+
+		//add the first pair
+		stack_collisions.push_pair(0,0);
+
+
+		while(stack_collisions.size())
+		{
+			//retrieve the last pair and pop
+			GUINT node0 = stack_collisions.back().m_index1;
+			GUINT node1 = stack_collisions.back().m_index2;
+			stack_collisions.pop_back();
+			if(node_collision(node0,node1)) // a collision is found
+			{
+				if(node0_is_leaf)
+				{
+					if(node1_is_leaf)
+					{
+						m_collision_pairs->push_pair(m_boxset0->getNodeData(node0),m_boxset1->getNodeData(node1));
+					}
+					else
+					{
+						//collide left
+						stack_collisions.push_pair(node0,m_boxset1->getLeftNodeIndex(node1));
+
+						//collide right
+						stack_collisions.push_pair(node0,m_boxset1->getRightNodeIndex(node1));
+					}
+				}
+				else
+				{
+					if(node1_is_leaf)
+					{
+						//collide left
+						stack_collisions.push_pair(m_boxset0->getLeftNodeIndex(node0),node1);
+						//collide right
+						stack_collisions.push_pair(m_boxset0->getRightNodeIndex(node0),node1);
+					}
+					else
+					{
+						GUINT left0 = m_boxset0->getLeftNodeIndex(node0);
+						GUINT right0 = m_boxset0->getRightNodeIndex(node0);
+						GUINT left1 = m_boxset1->getLeftNodeIndex(node1);
+						GUINT right1 = m_boxset1->getRightNodeIndex(node1);
+						//collide left
+						stack_collisions.push_pair(left0,left1);
+						//collide right
+						stack_collisions.push_pair(left0,right1);
+						//collide left
+						stack_collisions.push_pair(right0,left1);
+						//collide right
+						stack_collisions.push_pair(right0,right1);
+
+					}// else if node1 is not a leaf
+				}// else if node0 is not a leaf
+
+			}// if(node_collision(node0,node1))
+		}//while(stack_collisions.size())
+	}
+public:
+	void find_collision(BOX_SET_CLASS0 * boxset1, const btTransform & trans1,
+		BOX_SET_CLASS1 * boxset2, const btTransform & trans2,
+		gim_pair_set & collision_pairs, bool complete_primitive_tests = true)
+	{
+		m_collision_pairs = &collision_pairs;
+		m_boxset0 = boxset1;
+		m_boxset1 = boxset2;
+
+		trans_cache_1to0.calc_from_homogenic(trans1,trans2);
+
+		trans_cache_0to1 =  trans2.inverse();
+		trans_cache_0to1 *= trans1;
+
+
+		if(complete_primitive_tests)
+		{
+			t0_is_trimesh = boxset1->getPrimitiveManager().is_trimesh();
+			t1_is_trimesh = boxset2->getPrimitiveManager().is_trimesh();
+		}
+		else
+		{
+			t0_is_trimesh = false;
+			t1_is_trimesh = false;
+		}
+
+		find_collision_pairs();
+	}
+};
+
+
+#endif // GIM_BOXPRUNING_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_clip_polygon.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_clip_polygon.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_clip_polygon.h	(revision 2431)
@@ -0,0 +1,210 @@
+#ifndef GIM_CLIP_POLYGON_H_INCLUDED
+#define GIM_CLIP_POLYGON_H_INCLUDED
+
+/*! \file gim_tri_collision.h
+\author Francisco Len Nßjera
+*/
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+
+//! This function calcs the distance from a 3D plane
+class DISTANCE_PLANE_3D_FUNC
+{
+public:
+	template<typename CLASS_POINT,typename CLASS_PLANE>
+	inline GREAL operator()(const CLASS_PLANE & plane, const CLASS_POINT & point)
+	{
+		return DISTANCE_PLANE_POINT(plane, point);
+	}
+};
+
+
+
+template<typename CLASS_POINT>
+SIMD_FORCE_INLINE void PLANE_CLIP_POLYGON_COLLECT(
+						const CLASS_POINT & point0,
+						const CLASS_POINT & point1,
+						GREAL dist0,
+						GREAL dist1,
+						CLASS_POINT * clipped,
+						GUINT & clipped_count)
+{
+	GUINT _prevclassif = (dist0>G_EPSILON);
+	GUINT _classif = (dist1>G_EPSILON);
+	if(_classif!=_prevclassif)
+	{
+		GREAL blendfactor = -dist0/(dist1-dist0);
+		VEC_BLEND(clipped[clipped_count],point0,point1,blendfactor);
+		clipped_count++;
+	}
+	if(!_classif)
+	{
+		VEC_COPY(clipped[clipped_count],point1);
+		clipped_count++;
+	}
+}
+
+
+//! Clips a polygon by a plane
+/*!
+*\return The count of the clipped counts
+*/
+template<typename CLASS_POINT,typename CLASS_PLANE, typename DISTANCE_PLANE_FUNC>
+SIMD_FORCE_INLINE GUINT PLANE_CLIP_POLYGON_GENERIC(
+						const CLASS_PLANE & plane,
+						const CLASS_POINT * polygon_points,
+						GUINT polygon_point_count,
+						CLASS_POINT * clipped,DISTANCE_PLANE_FUNC distance_func)
+{
+    GUINT clipped_count = 0;
+
+
+    //clip first point
+	GREAL firstdist = distance_func(plane,polygon_points[0]);;
+	if(!(firstdist>G_EPSILON))
+	{
+		VEC_COPY(clipped[clipped_count],polygon_points[0]);
+		clipped_count++;
+	}
+
+	GREAL olddist = firstdist;
+	for(GUINT _i=1;_i<polygon_point_count;_i++)
+	{		
+		GREAL dist = distance_func(plane,polygon_points[_i]);
+
+		PLANE_CLIP_POLYGON_COLLECT(
+						polygon_points[_i-1],polygon_points[_i],
+						olddist,
+						dist,
+						clipped,
+						clipped_count);
+
+
+		olddist = dist;		
+	}
+
+	//RETURN TO FIRST  point	
+
+	PLANE_CLIP_POLYGON_COLLECT(
+					polygon_points[polygon_point_count-1],polygon_points[0],
+					olddist,
+					firstdist,
+					clipped,
+					clipped_count);
+
+	return clipped_count;
+}
+
+//! Clips a polygon by a plane
+/*!
+*\return The count of the clipped counts
+*/
+template<typename CLASS_POINT,typename CLASS_PLANE, typename DISTANCE_PLANE_FUNC>
+SIMD_FORCE_INLINE GUINT PLANE_CLIP_TRIANGLE_GENERIC(
+						const CLASS_PLANE & plane,
+						const CLASS_POINT & point0,
+						const CLASS_POINT & point1,
+						const CLASS_POINT & point2,
+						CLASS_POINT * clipped,DISTANCE_PLANE_FUNC distance_func)
+{
+    GUINT clipped_count = 0;
+
+    //clip first point
+	GREAL firstdist = distance_func(plane,point0);;
+	if(!(firstdist>G_EPSILON))
+	{
+		VEC_COPY(clipped[clipped_count],point0);
+		clipped_count++;
+	}
+
+	// point 1
+	GREAL olddist = firstdist;
+	GREAL dist = distance_func(plane,point1);
+
+	PLANE_CLIP_POLYGON_COLLECT(
+					point0,point1,
+					olddist,
+					dist,
+					clipped,
+					clipped_count);
+
+	olddist = dist;
+
+
+	// point 2
+	dist = distance_func(plane,point2);
+
+	PLANE_CLIP_POLYGON_COLLECT(
+					point1,point2,
+					olddist,
+					dist,
+					clipped,
+					clipped_count);
+	olddist = dist;
+
+
+
+	//RETURN TO FIRST  point
+	PLANE_CLIP_POLYGON_COLLECT(
+					point2,point0,
+					olddist,
+					firstdist,
+					clipped,
+					clipped_count);
+
+	return clipped_count;
+}
+
+
+template<typename CLASS_POINT,typename CLASS_PLANE>
+SIMD_FORCE_INLINE GUINT PLANE_CLIP_POLYGON3D(
+						const CLASS_PLANE & plane,
+						const CLASS_POINT * polygon_points,
+						GUINT polygon_point_count,
+						CLASS_POINT * clipped)
+{
+	return PLANE_CLIP_POLYGON_GENERIC<CLASS_POINT,CLASS_PLANE>(plane,polygon_points,polygon_point_count,clipped,DISTANCE_PLANE_3D_FUNC());
+}
+
+
+template<typename CLASS_POINT,typename CLASS_PLANE>
+SIMD_FORCE_INLINE GUINT PLANE_CLIP_TRIANGLE3D(
+						const CLASS_PLANE & plane,
+						const CLASS_POINT & point0,
+						const CLASS_POINT & point1,
+						const CLASS_POINT & point2,
+						CLASS_POINT * clipped)
+{
+	return PLANE_CLIP_TRIANGLE_GENERIC<CLASS_POINT,CLASS_PLANE>(plane,point0,point1,point2,clipped,DISTANCE_PLANE_3D_FUNC());
+}
+
+
+
+#endif // GIM_TRI_COLLISION_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_contact.cpp
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_contact.cpp	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_contact.cpp	(revision 2431)
@@ -0,0 +1,146 @@
+
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+#include "gim_contact.h"
+
+#define MAX_COINCIDENT 8
+
+void gim_contact_array::merge_contacts(
+	const gim_contact_array & contacts, bool normal_contact_average)
+{
+	clear();
+
+	if(contacts.size()==1)
+	{
+		push_back(contacts.back());
+		return;
+	}
+
+	gim_array<GIM_RSORT_TOKEN> keycontacts(contacts.size());
+	keycontacts.resize(contacts.size(),false);
+
+	//fill key contacts
+
+	GUINT i;
+
+	for (i = 0;i<contacts.size() ;i++ )
+	{
+		keycontacts[i].m_key = contacts[i].calc_key_contact();
+		keycontacts[i].m_value = i;
+	}
+
+	//sort keys
+	gim_heap_sort(keycontacts.pointer(),keycontacts.size(),GIM_RSORT_TOKEN_COMPARATOR());
+
+	// Merge contacts
+
+	GUINT coincident_count=0;
+	btVector3 coincident_normals[MAX_COINCIDENT];
+
+	GUINT last_key = keycontacts[0].m_key;
+	GUINT key = 0;
+
+	push_back(contacts[keycontacts[0].m_value]);
+	GIM_CONTACT * pcontact = &back();
+
+
+
+	for( i=1;i<keycontacts.size();i++)
+	{
+	    key = keycontacts[i].m_key;
+		const GIM_CONTACT * scontact = &contacts[keycontacts[i].m_value];
+
+		if(last_key ==  key)//same points
+		{
+			//merge contact
+			if(pcontact->m_depth - CONTACT_DIFF_EPSILON > scontact->m_depth)//)
+			{
+				*pcontact = *scontact;
+                coincident_count = 0;
+			}
+			else if(normal_contact_average)
+			{
+				if(btFabs(pcontact->m_depth - scontact->m_depth)<CONTACT_DIFF_EPSILON)
+                {
+                    if(coincident_count<MAX_COINCIDENT)
+                    {
+                    	coincident_normals[coincident_count] = scontact->m_normal;
+                        coincident_count++;
+                    }
+                }
+			}
+		}
+		else
+		{//add new contact
+
+		    if(normal_contact_average && coincident_count>0)
+		    {
+		    	pcontact->interpolate_normals(coincident_normals,coincident_count);
+		        coincident_count = 0;
+		    }
+
+		    push_back(*scontact);
+		    pcontact = &back();
+        }
+		last_key = key;
+	}
+}
+
+void gim_contact_array::merge_contacts_unique(const gim_contact_array & contacts)
+{
+	clear();
+
+	if(contacts.size()==1)
+	{
+		push_back(contacts.back());
+		return;
+	}
+
+	GIM_CONTACT average_contact = contacts.back();
+
+	for (GUINT i=1;i<contacts.size() ;i++ )
+	{
+		average_contact.m_point += contacts[i].m_point;
+		average_contact.m_normal += contacts[i].m_normal * contacts[i].m_depth;
+	}
+
+	//divide
+	GREAL divide_average = 1.0f/((GREAL)contacts.size());
+
+	average_contact.m_point *= divide_average;
+
+	average_contact.m_normal *= divide_average;
+
+	average_contact.m_depth = average_contact.m_normal.length();
+
+	average_contact.m_normal /= average_contact.m_depth;
+
+}
+
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_contact.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_contact.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_contact.h	(revision 2431)
@@ -0,0 +1,164 @@
+#ifndef GIM_CONTACT_H_INCLUDED
+#define GIM_CONTACT_H_INCLUDED
+
+/*! \file gim_contact.h
+\author Francisco Len Nßjera
+*/
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+#include "gim_geometry.h"
+#include "gim_radixsort.h"
+#include "gim_array.h"
+
+
+/**
+Configuration var for applying interpolation of  contact normals
+*/
+#define NORMAL_CONTACT_AVERAGE 1
+#define CONTACT_DIFF_EPSILON 0.00001f
+
+/// Structure for collision results
+///Functions for managing and sorting contacts resulting from a collision query.
+///Contact lists must be create by calling \ref GIM_CREATE_CONTACT_LIST
+///After querys, contact lists must be destroy by calling \ref GIM_DYNARRAY_DESTROY
+///Contacts can be merge for avoid duplicate results by calling \ref gim_merge_contacts
+class GIM_CONTACT
+{
+public:
+    btVector3 m_point;
+    btVector3 m_normal;
+    GREAL m_depth;//Positive value indicates interpenetration
+    GREAL m_distance;//Padding not for use
+    GUINT m_feature1;//Face number
+    GUINT m_feature2;//Face number
+public:
+    GIM_CONTACT()
+    {
+    }
+
+    GIM_CONTACT(const GIM_CONTACT & contact):
+				m_point(contact.m_point),
+				m_normal(contact.m_normal),
+				m_depth(contact.m_depth),
+				m_feature1(contact.m_feature1),
+				m_feature2(contact.m_feature2)
+    {
+    	m_point = contact.m_point;
+    	m_normal = contact.m_normal;
+    	m_depth = contact.m_depth;
+    	m_feature1 = contact.m_feature1;
+    	m_feature2 = contact.m_feature2;
+    }
+
+    GIM_CONTACT(const btVector3 &point,const btVector3 & normal,
+    	 			GREAL depth, GUINT feature1, GUINT feature2):
+				m_point(point),
+				m_normal(normal),
+				m_depth(depth),
+				m_feature1(feature1),
+				m_feature2(feature2)
+    {
+    }
+
+	//! Calcs key for coord classification
+    SIMD_FORCE_INLINE GUINT calc_key_contact() const
+    {
+    	GINT _coords[] = {
+    		(GINT)(m_point[0]*1000.0f+1.0f),
+    		(GINT)(m_point[1]*1333.0f),
+    		(GINT)(m_point[2]*2133.0f+3.0f)};
+		GUINT _hash=0;
+		GUINT *_uitmp = (GUINT *)(&_coords[0]);
+		_hash = *_uitmp;
+		_uitmp++;
+		_hash += (*_uitmp)<<4;
+		_uitmp++;
+		_hash += (*_uitmp)<<8;
+		return _hash;
+    }
+
+    SIMD_FORCE_INLINE void interpolate_normals( btVector3 * normals,GUINT normal_count)
+    {
+    	btVector3 vec_sum(m_normal);
+		for(GUINT i=0;i<normal_count;i++)
+		{
+			vec_sum += normals[i];
+		}
+
+		GREAL vec_sum_len = vec_sum.length2();
+		if(vec_sum_len <CONTACT_DIFF_EPSILON) return;
+
+		GIM_INV_SQRT(vec_sum_len,vec_sum_len); // 1/sqrt(vec_sum_len)
+
+		m_normal = vec_sum*vec_sum_len;
+    }
+
+};
+
+
+class gim_contact_array:public gim_array<GIM_CONTACT>
+{
+public:
+	gim_contact_array():gim_array<GIM_CONTACT>(64)
+	{
+	}
+
+	SIMD_FORCE_INLINE void push_contact(const btVector3 &point,const btVector3 & normal,
+    	 			GREAL depth, GUINT feature1, GUINT feature2)
+	{
+		push_back_mem();
+		GIM_CONTACT & newele = back();
+		newele.m_point = point;
+		newele.m_normal = normal;
+		newele.m_depth = depth;
+		newele.m_feature1 = feature1;
+		newele.m_feature2 = feature2;
+	}
+
+	SIMD_FORCE_INLINE void push_triangle_contacts(
+		const GIM_TRIANGLE_CONTACT_DATA & tricontact,
+		GUINT feature1,GUINT feature2)
+	{
+		for(GUINT i = 0;i<tricontact.m_point_count ;i++ )
+		{
+			push_back_mem();
+			GIM_CONTACT & newele = back();
+			newele.m_point = tricontact.m_points[i];
+			newele.m_normal = tricontact.m_separating_normal;
+			newele.m_depth = tricontact.m_penetration_depth;
+			newele.m_feature1 = feature1;
+			newele.m_feature2 = feature2;
+		}
+	}
+
+	void merge_contacts(const gim_contact_array & contacts, bool normal_contact_average = true);
+	void merge_contacts_unique(const gim_contact_array & contacts);
+};
+
+#endif // GIM_CONTACT_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_geom_types.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_geom_types.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_geom_types.h	(revision 2431)
@@ -0,0 +1,97 @@
+#ifndef GIM_GEOM_TYPES_H_INCLUDED
+#define GIM_GEOM_TYPES_H_INCLUDED
+
+/*! \file gim_geom_types.h
+\author Francisco Len Nßjera
+*/
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+
+#include "gim_math.h"
+
+
+
+//! Short Integer vector 2D
+typedef GSHORT vec2s[2];
+//! Integer vector 3D
+typedef GSHORT vec3s[3];
+//! Integer vector 4D
+typedef GSHORT vec4s[4];
+
+//! Short Integer vector 2D
+typedef GUSHORT vec2us[2];
+//! Integer vector 3D
+typedef GUSHORT vec3us[3];
+//! Integer vector 4D
+typedef GUSHORT vec4us[4];
+
+//! Integer vector 2D
+typedef GINT vec2i[2];
+//! Integer vector 3D
+typedef GINT vec3i[3];
+//! Integer vector 4D
+typedef GINT vec4i[4];
+
+//! Unsigned Integer vector 2D
+typedef GUINT vec2ui[2];
+//! Unsigned Integer vector 3D
+typedef GUINT vec3ui[3];
+//! Unsigned Integer vector 4D
+typedef GUINT vec4ui[4];
+
+//! Float vector 2D
+typedef GREAL vec2f[2];
+//! Float vector 3D
+typedef GREAL vec3f[3];
+//! Float vector 4D
+typedef GREAL vec4f[4];
+
+//! Double vector 2D
+typedef GREAL2 vec2d[2];
+//! Float vector 3D
+typedef GREAL2 vec3d[3];
+//! Float vector 4D
+typedef GREAL2 vec4d[4];
+
+//! Matrix 2D, row ordered
+typedef GREAL mat2f[2][2];
+//! Matrix 3D, row ordered
+typedef GREAL mat3f[3][3];
+//! Matrix 4D, row ordered
+typedef GREAL mat4f[4][4];
+
+//! Quaternion
+typedef GREAL quatf[4];
+
+//typedef struct _aabb3f aabb3f;
+
+
+
+#endif // GIM_GEOM_TYPES_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_geometry.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_geometry.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_geometry.h	(revision 2431)
@@ -0,0 +1,42 @@
+#ifndef GIM_GEOMETRY_H_INCLUDED
+#define GIM_GEOMETRY_H_INCLUDED
+
+/*! \file gim_geometry.h
+\author Francisco Len Nßjera
+*/
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+///Additional Headers for Collision
+#include "gim_basic_geometry_operations.h"
+#include "gim_clip_polygon.h"
+#include "gim_box_collision.h"
+#include "gim_tri_collision.h"
+
+#endif // GIM_VECTOR_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_hash_table.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_hash_table.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_hash_table.h	(revision 2431)
@@ -0,0 +1,902 @@
+#ifndef GIM_HASH_TABLE_H_INCLUDED
+#define GIM_HASH_TABLE_H_INCLUDED
+/*! \file gim_trimesh_data.h
+\author Francisco Len Nßjera
+*/
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+#include "gim_radixsort.h"
+
+
+#define GIM_INVALID_HASH 0xffffffff //!< A very very high value
+#define GIM_DEFAULT_HASH_TABLE_SIZE 380
+#define GIM_DEFAULT_HASH_TABLE_NODE_SIZE 4
+#define GIM_HASH_TABLE_GROW_FACTOR 2
+
+#define GIM_MIN_RADIX_SORT_SIZE 860 //!< calibrated on a PIII
+
+template<typename T>
+struct GIM_HASH_TABLE_NODE
+{
+    GUINT m_key;
+    T m_data;
+    GIM_HASH_TABLE_NODE()
+    {
+    }
+
+    GIM_HASH_TABLE_NODE(const GIM_HASH_TABLE_NODE & value)
+    {
+        m_key = value.m_key;
+        m_data = value.m_data;
+    }
+
+    GIM_HASH_TABLE_NODE(GUINT key, const T & data)
+    {
+        m_key = key;
+        m_data = data;
+    }
+
+    bool operator <(const GIM_HASH_TABLE_NODE<T> & other) const
+	{
+		///inverse order, further objects are first
+		if(m_key <  other.m_key) return true;
+		return false;
+	}
+
+	bool operator >(const GIM_HASH_TABLE_NODE<T> & other) const
+	{
+		///inverse order, further objects are first
+		if(m_key >  other.m_key) return true;
+		return false;
+	}
+
+	bool operator ==(const GIM_HASH_TABLE_NODE<T> & other) const
+	{
+		///inverse order, further objects are first
+		if(m_key ==  other.m_key) return true;
+		return false;
+	}
+};
+
+///Macro for getting the key
+class GIM_HASH_NODE_GET_KEY
+{
+public:
+	template<class T>
+	inline GUINT operator()( const T& a)
+	{
+		return a.m_key;
+	}
+};
+
+
+
+///Macro for comparing the key and the element
+class GIM_HASH_NODE_CMP_KEY_MACRO
+{
+public:
+	template<class T>
+	inline int operator() ( const T& a, GUINT key)
+	{
+		return ((int)(a.m_key - key));
+	}
+};
+
+///Macro for comparing Hash nodes
+class GIM_HASH_NODE_CMP_MACRO
+{
+public:
+	template<class T>
+	inline int operator() ( const T& a, const T& b )
+	{
+		return ((int)(a.m_key - b.m_key));
+	}
+};
+
+
+
+
+
+//! Sorting for hash table
+/*!
+switch automatically between quicksort and radixsort
+*/
+template<typename T>
+void gim_sort_hash_node_array(T * array, GUINT array_count)
+{
+    if(array_count<GIM_MIN_RADIX_SORT_SIZE)
+    {
+    	gim_heap_sort(array,array_count,GIM_HASH_NODE_CMP_MACRO());
+    }
+    else
+    {
+    	memcopy_elements_func cmpfunc;
+    	gim_radix_sort(array,array_count,GIM_HASH_NODE_GET_KEY(),cmpfunc);
+    }
+}
+
+
+
+
+
+
+// Note: assumes long is at least 32 bits.
+#define GIM_NUM_PRIME 28
+
+static const GUINT gim_prime_list[GIM_NUM_PRIME] =
+{
+  53ul,         97ul,         193ul,       389ul,       769ul,
+  1543ul,       3079ul,       6151ul,      12289ul,     24593ul,
+  49157ul,      98317ul,      196613ul,    393241ul,    786433ul,
+  1572869ul,    3145739ul,    6291469ul,   12582917ul,  25165843ul,
+  50331653ul,   100663319ul,  201326611ul, 402653189ul, 805306457ul,
+  1610612741ul, 3221225473ul, 4294967291ul
+};
+
+inline GUINT gim_next_prime(GUINT number)
+{
+    //Find nearest upper prime
+    GUINT result_ind = 0;
+    gim_binary_search(gim_prime_list,0,(GIM_NUM_PRIME-2),number,result_ind);
+
+    // inv: result_ind < 28
+    return gim_prime_list[result_ind];
+}
+
+
+
+//! A compact hash table implementation
+/*!
+A memory aligned compact hash table that coud be treated as an array.
+It could be a simple sorted array without the overhead of the hash key bucked, or could
+be a formely hash table with an array of keys.
+You can use switch_to_hashtable() and switch_to_sorted_array for saving space or increase speed.
+</br>
+
+<ul>
+<li> if node_size = 0, then this container becomes a simple sorted array allocator. reserve_size is used for reserve memory in m_nodes.
+When the array size reaches the size equivalent to 'min_hash_table_size', then it becomes a hash table by calling check_for_switching_to_hashtable.
+<li> If node_size != 0, then this container becomes a hash table for ever
+</ul>
+
+*/
+template<class T>
+class gim_hash_table
+{
+protected:
+    typedef GIM_HASH_TABLE_NODE<T> _node_type;
+
+    //!The nodes
+    //array< _node_type, SuperAllocator<_node_type> > m_nodes;
+    gim_array< _node_type > m_nodes;
+    //SuperBufferedArray< _node_type > m_nodes;
+    bool m_sorted;
+
+    ///Hash table data management. The hash table has the indices to the corresponding m_nodes array
+    GUINT * m_hash_table;//!<
+    GUINT m_table_size;//!<
+    GUINT m_node_size;//!<
+    GUINT m_min_hash_table_size;
+
+
+
+    //! Returns the cell index
+    inline GUINT _find_cell(GUINT hashkey)
+    {
+        _node_type * nodesptr = m_nodes.pointer();
+        GUINT start_index = (hashkey%m_table_size)*m_node_size;
+        GUINT end_index = start_index + m_node_size;
+
+        while(start_index<end_index)
+        {
+            GUINT value = m_hash_table[start_index];
+            if(value != GIM_INVALID_HASH)
+            {
+                if(nodesptr[value].m_key == hashkey) return start_index;
+            }
+            start_index++;
+        }
+        return GIM_INVALID_HASH;
+    }
+
+    //! Find the avaliable cell for the hashkey, and return an existing cell if it has the same hash key
+    inline GUINT _find_avaliable_cell(GUINT hashkey)
+    {
+        _node_type * nodesptr = m_nodes.pointer();
+        GUINT avaliable_index = GIM_INVALID_HASH;
+        GUINT start_index = (hashkey%m_table_size)*m_node_size;
+        GUINT end_index = start_index + m_node_size;
+
+        while(start_index<end_index)
+        {
+            GUINT value = m_hash_table[start_index];
+            if(value == GIM_INVALID_HASH)
+            {
+                if(avaliable_index==GIM_INVALID_HASH)
+                {
+                    avaliable_index = start_index;
+                }
+            }
+            else if(nodesptr[value].m_key == hashkey)
+            {
+                return start_index;
+            }
+            start_index++;
+        }
+        return avaliable_index;
+    }
+
+
+
+    //! reserves the memory for the hash table.
+    /*!
+    \pre hash table must be empty
+    \post reserves the memory for the hash table, an initializes all elements to GIM_INVALID_HASH.
+    */
+    inline void _reserve_table_memory(GUINT newtablesize)
+    {
+        if(newtablesize==0) return;
+        if(m_node_size==0) return;
+
+        //Get a Prime size
+
+        m_table_size = gim_next_prime(newtablesize);
+
+        GUINT datasize = m_table_size*m_node_size;
+        //Alloc the data buffer
+        m_hash_table =  (GUINT *)gim_alloc(datasize*sizeof(GUINT));
+    }
+
+    inline void _invalidate_keys()
+    {
+        GUINT datasize = m_table_size*m_node_size;
+        for(GUINT i=0;i<datasize;i++)
+        {
+            m_hash_table[i] = GIM_INVALID_HASH;// invalidate keys
+        }
+    }
+
+    //! Clear all memory for the hash table
+    inline void _clear_table_memory()
+    {
+        if(m_hash_table==NULL) return;
+        gim_free(m_hash_table);
+        m_hash_table = NULL;
+        m_table_size = 0;
+    }
+
+    //! Invalidates the keys (Assigning GIM_INVALID_HASH to all) Reorders the hash keys
+    inline void _rehash()
+    {
+        _invalidate_keys();
+
+        _node_type * nodesptr = m_nodes.pointer();
+        for(GUINT i=0;i<(GUINT)m_nodes.size();i++)
+        {
+            GUINT nodekey = nodesptr[i].m_key;
+            if(nodekey != GIM_INVALID_HASH)
+            {
+                //Search for the avaliable cell in buffer
+                GUINT index = _find_avaliable_cell(nodekey);
+
+
+				if(m_hash_table[index]!=GIM_INVALID_HASH)
+				{//The new index is alreade used... discard this new incomming object, repeated key
+				    btAssert(m_hash_table[index]==nodekey);
+					nodesptr[i].m_key = GIM_INVALID_HASH;
+				}
+				else
+				{
+					//;
+					//Assign the value for alloc
+					m_hash_table[index] = i;
+				}
+            }
+        }
+    }
+
+    //! Resize hash table indices
+    inline void _resize_table(GUINT newsize)
+    {
+        //Clear memory
+        _clear_table_memory();
+        //Alloc the data
+        _reserve_table_memory(newsize);
+        //Invalidate keys and rehash
+        _rehash();
+    }
+
+    //! Destroy hash table memory
+    inline void _destroy()
+    {
+        if(m_hash_table==NULL) return;
+        _clear_table_memory();
+    }
+
+    //! Finds an avaliable hash table cell, and resizes the table if there isn't space
+    inline GUINT _assign_hash_table_cell(GUINT hashkey)
+    {
+        GUINT cell_index = _find_avaliable_cell(hashkey);
+
+        if(cell_index==GIM_INVALID_HASH)
+        {
+            //rehashing
+            _resize_table(m_table_size+1);
+            GUINT cell_index = _find_avaliable_cell(hashkey);
+            btAssert(cell_index!=GIM_INVALID_HASH);
+        }
+        return cell_index;
+    }
+
+    //! erase by index in hash table
+    inline bool _erase_by_index_hash_table(GUINT index)
+    {
+        if(index >= m_nodes.size()) return false;
+        if(m_nodes[index].m_key != GIM_INVALID_HASH)
+        {
+            //Search for the avaliable cell in buffer
+            GUINT cell_index = _find_cell(m_nodes[index].m_key);
+
+            btAssert(cell_index!=GIM_INVALID_HASH);
+            btAssert(m_hash_table[cell_index]==index);
+
+            m_hash_table[cell_index] = GIM_INVALID_HASH;
+        }
+
+        return this->_erase_unsorted(index);
+    }
+
+    //! erase by key in hash table
+    inline bool _erase_hash_table(GUINT hashkey)
+    {
+        if(hashkey == GIM_INVALID_HASH) return false;
+
+        //Search for the avaliable cell in buffer
+        GUINT cell_index = _find_cell(hashkey);
+        if(cell_index ==GIM_INVALID_HASH) return false;
+
+        GUINT index = m_hash_table[cell_index];
+        m_hash_table[cell_index] = GIM_INVALID_HASH;
+
+        return this->_erase_unsorted(index);
+    }
+
+
+
+    //! insert an element in hash table
+    /*!
+    If the element exists, this won't insert the element
+    \return the index in the array of the existing element,or GIM_INVALID_HASH if the element has been inserted
+    If so, the element has been inserted at the last position of the array.
+    */
+    inline GUINT _insert_hash_table(GUINT hashkey, const T & value)
+    {
+        if(hashkey==GIM_INVALID_HASH)
+        {
+            //Insert anyway
+            _insert_unsorted(hashkey,value);
+            return GIM_INVALID_HASH;
+        }
+
+        GUINT cell_index = _assign_hash_table_cell(hashkey);
+
+        GUINT value_key = m_hash_table[cell_index];
+
+        if(value_key!= GIM_INVALID_HASH) return value_key;// Not overrited
+
+        m_hash_table[cell_index] = m_nodes.size();
+
+        _insert_unsorted(hashkey,value);
+        return GIM_INVALID_HASH;
+    }
+
+    //! insert an element in hash table.
+    /*!
+    If the element exists, this replaces the element.
+    \return the index in the array of the existing element,or GIM_INVALID_HASH if the element has been inserted
+    If so, the element has been inserted at the last position of the array.
+    */
+    inline GUINT _insert_hash_table_replace(GUINT hashkey, const T & value)
+    {
+        if(hashkey==GIM_INVALID_HASH)
+        {
+            //Insert anyway
+            _insert_unsorted(hashkey,value);
+            return GIM_INVALID_HASH;
+        }
+
+        GUINT cell_index = _assign_hash_table_cell(hashkey);
+
+        GUINT value_key = m_hash_table[cell_index];
+
+        if(value_key!= GIM_INVALID_HASH)
+        {//replaces the existing
+            m_nodes[value_key] = _node_type(hashkey,value);
+            return value_key;// index of the replaced element
+        }
+
+        m_hash_table[cell_index] = m_nodes.size();
+
+        _insert_unsorted(hashkey,value);
+        return GIM_INVALID_HASH;
+
+    }
+
+    
+    ///Sorted array data management. The hash table has the indices to the corresponding m_nodes array
+    inline bool _erase_sorted(GUINT index)
+    {
+        if(index>=(GUINT)m_nodes.size()) return false;
+        m_nodes.erase_sorted(index);
+		if(m_nodes.size()<2) m_sorted = false;
+        return true;
+    }
+
+    //! faster, but unsorted
+    inline bool _erase_unsorted(GUINT index)
+    {
+        if(index>=m_nodes.size()) return false;
+
+        GUINT lastindex = m_nodes.size()-1;
+        if(index<lastindex && m_hash_table!=0)
+        {
+			GUINT hashkey =  m_nodes[lastindex].m_key;
+			if(hashkey!=GIM_INVALID_HASH)
+			{
+				//update the new position of the last element
+				GUINT cell_index = _find_cell(hashkey);
+				btAssert(cell_index!=GIM_INVALID_HASH);
+				//new position of the last element which will be swaped
+				m_hash_table[cell_index] = index;
+			}
+        }
+        m_nodes.erase(index);
+        m_sorted = false;
+        return true;
+    }
+
+    //! Insert in position ordered
+    /*!
+    Also checks if it is needed to transform this container to a hash table, by calling check_for_switching_to_hashtable
+    */
+    inline void _insert_in_pos(GUINT hashkey, const T & value, GUINT pos)
+    {
+        m_nodes.insert(_node_type(hashkey,value),pos);
+        this->check_for_switching_to_hashtable();
+    }
+
+    //! Insert an element in an ordered array
+    inline GUINT _insert_sorted(GUINT hashkey, const T & value)
+    {
+        if(hashkey==GIM_INVALID_HASH || size()==0)
+        {
+            m_nodes.push_back(_node_type(hashkey,value));
+            return GIM_INVALID_HASH;
+        }
+        //Insert at last position
+        //Sort element
+
+
+        GUINT result_ind=0;
+        GUINT last_index = m_nodes.size()-1;
+        _node_type * ptr = m_nodes.pointer();
+
+        bool found = gim_binary_search_ex(
+        	ptr,0,last_index,result_ind,hashkey,GIM_HASH_NODE_CMP_KEY_MACRO());
+
+
+        //Insert before found index
+        if(found)
+        {
+            return result_ind;
+        }
+        else
+        {
+            _insert_in_pos(hashkey, value, result_ind);
+        }
+        return GIM_INVALID_HASH;
+    }
+
+    inline GUINT _insert_sorted_replace(GUINT hashkey, const T & value)
+    {
+        if(hashkey==GIM_INVALID_HASH || size()==0)
+        {
+            m_nodes.push_back(_node_type(hashkey,value));
+            return GIM_INVALID_HASH;
+        }
+        //Insert at last position
+        //Sort element
+        GUINT result_ind;
+        GUINT last_index = m_nodes.size()-1;
+        _node_type * ptr = m_nodes.pointer();
+
+        bool found = gim_binary_search_ex(
+        	ptr,0,last_index,result_ind,hashkey,GIM_HASH_NODE_CMP_KEY_MACRO());
+
+        //Insert before found index
+        if(found)
+        {
+            m_nodes[result_ind] = _node_type(hashkey,value);
+        }
+        else
+        {
+            _insert_in_pos(hashkey, value, result_ind);
+        }
+        return result_ind;
+    }
+
+    //! Fast insertion in m_nodes array
+    inline GUINT  _insert_unsorted(GUINT hashkey, const T & value)
+    {
+        m_nodes.push_back(_node_type(hashkey,value));
+        m_sorted = false;
+        return GIM_INVALID_HASH;
+    }
+
+    
+
+public:
+
+    /*!
+        <li> if node_size = 0, then this container becomes a simple sorted array allocator. reserve_size is used for reserve memory in m_nodes.
+        When the array size reaches the size equivalent to 'min_hash_table_size', then it becomes a hash table by calling check_for_switching_to_hashtable.
+        <li> If node_size != 0, then this container becomes a hash table for ever
+        </ul>
+    */
+    gim_hash_table(GUINT reserve_size = GIM_DEFAULT_HASH_TABLE_SIZE,
+                     GUINT node_size = GIM_DEFAULT_HASH_TABLE_NODE_SIZE,
+                     GUINT min_hash_table_size = GIM_INVALID_HASH)
+    {
+        m_hash_table = NULL;
+        m_table_size = 0;
+        m_sorted = false;
+        m_node_size = node_size;
+        m_min_hash_table_size = min_hash_table_size;
+
+        if(m_node_size!=0)
+        {
+            if(reserve_size!=0)
+            {
+                m_nodes.reserve(reserve_size);
+                _reserve_table_memory(reserve_size);
+                _invalidate_keys();
+            }
+            else
+            {
+                m_nodes.reserve(GIM_DEFAULT_HASH_TABLE_SIZE);
+                _reserve_table_memory(GIM_DEFAULT_HASH_TABLE_SIZE);
+                _invalidate_keys();
+            }
+        }
+        else if(reserve_size!=0)
+        {
+            m_nodes.reserve(reserve_size);
+        }
+
+    }
+
+    ~gim_hash_table()
+    {
+        _destroy();
+    }
+
+    inline bool is_hash_table()
+    {
+        if(m_hash_table) return true;
+        return false;
+    }
+
+    inline bool is_sorted()
+    {
+        if(size()<2) return true;
+        return m_sorted;
+    }
+
+    bool sort()
+    {
+        if(is_sorted()) return true;
+        if(m_nodes.size()<2) return false;
+
+
+        _node_type * ptr = m_nodes.pointer();
+        GUINT siz = m_nodes.size();
+        gim_sort_hash_node_array(ptr,siz);
+        m_sorted=true;
+
+
+
+        if(m_hash_table)
+        {
+            _rehash();
+        }
+        return true;
+    }
+
+    bool switch_to_hashtable()
+    {
+        if(m_hash_table) return false;
+        if(m_node_size==0) m_node_size = GIM_DEFAULT_HASH_TABLE_NODE_SIZE;
+        if(m_nodes.size()<GIM_DEFAULT_HASH_TABLE_SIZE)
+        {
+            _resize_table(GIM_DEFAULT_HASH_TABLE_SIZE);
+        }
+        else
+        {
+            _resize_table(m_nodes.size()+1);
+        }
+
+        return true;
+    }
+
+    bool switch_to_sorted_array()
+    {
+        if(m_hash_table==NULL) return true;
+        _clear_table_memory();
+        return sort();
+    }
+
+    //!If the container reaches the
+    bool check_for_switching_to_hashtable()
+    {
+        if(this->m_hash_table) return true;
+
+        if(!(m_nodes.size()< m_min_hash_table_size))
+        {
+            if(m_node_size == 0)
+            {
+                m_node_size = GIM_DEFAULT_HASH_TABLE_NODE_SIZE;
+            }
+
+            _resize_table(m_nodes.size()+1);
+            return true;
+        }
+        return false;
+    }
+
+    inline void set_sorted(bool value)
+    {
+    	m_sorted = value;
+    }
+
+    //! Retrieves the amount of keys.
+    inline GUINT size() const
+    {
+        return m_nodes.size();
+    }
+
+    //! Retrieves the hash key.
+    inline GUINT get_key(GUINT index) const
+    {
+        return m_nodes[index].m_key;
+    }
+
+    //! Retrieves the value by index
+    /*!
+    */
+    inline T * get_value_by_index(GUINT index)
+    {
+        return &m_nodes[index].m_data;
+    }
+
+    inline const T& operator[](GUINT index) const
+    {
+        return m_nodes[index].m_data;
+    }
+
+    inline T& operator[](GUINT index)
+    {
+        return m_nodes[index].m_data;
+    }
+
+    //! Finds the index of the element with the key
+    /*!
+    \return the index in the array of the existing element,or GIM_INVALID_HASH if the element has been inserted
+    If so, the element has been inserted at the last position of the array.
+    */
+    inline GUINT find(GUINT hashkey)
+    {
+        if(m_hash_table)
+        {
+            GUINT cell_index = _find_cell(hashkey);
+            if(cell_index==GIM_INVALID_HASH) return GIM_INVALID_HASH;
+            return m_hash_table[cell_index];
+        }
+		GUINT last_index = m_nodes.size();
+        if(last_index<2)
+        {
+			if(last_index==0) return GIM_INVALID_HASH;
+            if(m_nodes[0].m_key == hashkey) return 0;
+            return GIM_INVALID_HASH;
+        }
+        else if(m_sorted)
+        {
+            //Binary search
+            GUINT result_ind = 0;
+			last_index--;
+            _node_type *  ptr =  m_nodes.pointer();
+
+            bool found = gim_binary_search_ex(ptr,0,last_index,result_ind,hashkey,GIM_HASH_NODE_CMP_KEY_MACRO());
+
+
+            if(found) return result_ind;
+        }
+        return GIM_INVALID_HASH;
+    }
+
+    //! Retrieves the value associated with the index
+    /*!
+    \return the found element, or null
+    */
+    inline T * get_value(GUINT hashkey)
+    {
+        GUINT index = find(hashkey);
+        if(index == GIM_INVALID_HASH) return NULL;
+        return &m_nodes[index].m_data;
+    }
+
+
+    /*!
+    */
+    inline bool erase_by_index(GUINT index)
+    {
+        if(index > m_nodes.size()) return false;
+
+        if(m_hash_table == NULL)
+        {
+            if(is_sorted())
+            {
+                return this->_erase_sorted(index);
+            }
+            else
+            {
+                return this->_erase_unsorted(index);
+            }
+        }
+        else
+        {
+            return this->_erase_by_index_hash_table(index);
+        }
+        return false;
+    }
+
+
+
+    inline bool erase_by_index_unsorted(GUINT index)
+    {
+        if(index > m_nodes.size()) return false;
+
+        if(m_hash_table == NULL)
+        {
+            return this->_erase_unsorted(index);
+        }
+        else
+        {
+            return this->_erase_by_index_hash_table(index);
+        }
+        return false;
+    }
+
+
+
+    /*!
+
+    */
+    inline bool erase_by_key(GUINT hashkey)
+    {
+        if(size()==0) return false;
+
+        if(m_hash_table)
+        {
+            return this->_erase_hash_table(hashkey);
+        }
+        //Binary search
+
+        if(is_sorted()==false) return false;
+
+        GUINT result_ind = find(hashkey);
+        if(result_ind!= GIM_INVALID_HASH)
+        {
+            return this->_erase_sorted(result_ind);
+        }
+        return false;
+    }
+
+    void clear()
+    {
+        m_nodes.clear();
+
+        if(m_hash_table==NULL) return;
+        GUINT datasize = m_table_size*m_node_size;
+        //Initialize the hashkeys.
+        GUINT i;
+        for(i=0;i<datasize;i++)
+        {
+            m_hash_table[i] = GIM_INVALID_HASH;// invalidate keys
+        }
+		m_sorted = false;
+    }
+
+    //! Insert an element into the hash
+    /*!
+    \return If GIM_INVALID_HASH, the object has been inserted succesfully. Else it returns the position
+    of the existing element.
+    */
+    inline GUINT insert(GUINT hashkey, const T & element)
+    {
+        if(m_hash_table)
+        {
+            return this->_insert_hash_table(hashkey,element);
+        }
+        if(this->is_sorted())
+        {
+            return this->_insert_sorted(hashkey,element);
+        }
+        return this->_insert_unsorted(hashkey,element);
+    }
+
+    //! Insert an element into the hash, and could overrite an existing object with the same hash.
+    /*!
+    \return If GIM_INVALID_HASH, the object has been inserted succesfully. Else it returns the position
+    of the replaced element.
+    */
+    inline GUINT insert_override(GUINT hashkey, const T & element)
+    {
+        if(m_hash_table)
+        {
+            return this->_insert_hash_table_replace(hashkey,element);
+        }
+        if(this->is_sorted())
+        {
+            return this->_insert_sorted_replace(hashkey,element);
+        }
+        this->_insert_unsorted(hashkey,element);
+        return m_nodes.size();
+    }
+
+
+
+    //! Insert an element into the hash,But if this container is a sorted array, this inserts it unsorted
+    /*!
+    */
+    inline GUINT insert_unsorted(GUINT hashkey,const T & element)
+    {
+        if(m_hash_table)
+        {
+            return this->_insert_hash_table(hashkey,element);
+        }
+        return this->_insert_unsorted(hashkey,element);
+    }
+
+
+};
+
+
+
+#endif // GIM_CONTAINERS_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_linear_math.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_linear_math.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_linear_math.h	(revision 2431)
@@ -0,0 +1,1573 @@
+#ifndef GIM_LINEAR_H_INCLUDED
+#define GIM_LINEAR_H_INCLUDED
+
+/*! \file gim_linear_math.h
+*\author Francisco Len Nßjera
+Type Independant Vector and matrix operations.
+*/
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+
+#include "gim_math.h"
+#include "gim_geom_types.h"
+
+
+
+
+//! Zero out a 2D vector
+#define VEC_ZERO_2(a)				\
+{						\
+   (a)[0] = (a)[1] = 0.0f;			\
+}\
+
+
+//! Zero out a 3D vector
+#define VEC_ZERO(a)				\
+{						\
+   (a)[0] = (a)[1] = (a)[2] = 0.0f;		\
+}\
+
+
+/// Zero out a 4D vector
+#define VEC_ZERO_4(a)				\
+{						\
+   (a)[0] = (a)[1] = (a)[2] = (a)[3] = 0.0f;	\
+}\
+
+
+/// Vector copy
+#define VEC_COPY_2(b,a)				\
+{						\
+   (b)[0] = (a)[0];				\
+   (b)[1] = (a)[1];				\
+}\
+
+
+/// Copy 3D vector
+#define VEC_COPY(b,a)				\
+{						\
+   (b)[0] = (a)[0];				\
+   (b)[1] = (a)[1];				\
+   (b)[2] = (a)[2];				\
+}\
+
+
+/// Copy 4D vector
+#define VEC_COPY_4(b,a)				\
+{						\
+   (b)[0] = (a)[0];				\
+   (b)[1] = (a)[1];				\
+   (b)[2] = (a)[2];				\
+   (b)[3] = (a)[3];				\
+}\
+
+/// VECTOR SWAP
+#define VEC_SWAP(b,a)				\
+{  \
+    GIM_SWAP_NUMBERS((b)[0],(a)[0]);\
+    GIM_SWAP_NUMBERS((b)[1],(a)[1]);\
+    GIM_SWAP_NUMBERS((b)[2],(a)[2]);\
+}\
+
+/// Vector difference
+#define VEC_DIFF_2(v21,v2,v1)			\
+{						\
+   (v21)[0] = (v2)[0] - (v1)[0];		\
+   (v21)[1] = (v2)[1] - (v1)[1];		\
+}\
+
+
+/// Vector difference
+#define VEC_DIFF(v21,v2,v1)			\
+{						\
+   (v21)[0] = (v2)[0] - (v1)[0];		\
+   (v21)[1] = (v2)[1] - (v1)[1];		\
+   (v21)[2] = (v2)[2] - (v1)[2];		\
+}\
+
+
+/// Vector difference
+#define VEC_DIFF_4(v21,v2,v1)			\
+{						\
+   (v21)[0] = (v2)[0] - (v1)[0];		\
+   (v21)[1] = (v2)[1] - (v1)[1];		\
+   (v21)[2] = (v2)[2] - (v1)[2];		\
+   (v21)[3] = (v2)[3] - (v1)[3];		\
+}\
+
+
+/// Vector sum
+#define VEC_SUM_2(v21,v2,v1)			\
+{						\
+   (v21)[0] = (v2)[0] + (v1)[0];		\
+   (v21)[1] = (v2)[1] + (v1)[1];		\
+}\
+
+
+/// Vector sum
+#define VEC_SUM(v21,v2,v1)			\
+{						\
+   (v21)[0] = (v2)[0] + (v1)[0];		\
+   (v21)[1] = (v2)[1] + (v1)[1];		\
+   (v21)[2] = (v2)[2] + (v1)[2];		\
+}\
+
+
+/// Vector sum
+#define VEC_SUM_4(v21,v2,v1)			\
+{						\
+   (v21)[0] = (v2)[0] + (v1)[0];		\
+   (v21)[1] = (v2)[1] + (v1)[1];		\
+   (v21)[2] = (v2)[2] + (v1)[2];		\
+   (v21)[3] = (v2)[3] + (v1)[3];		\
+}\
+
+
+/// scalar times vector
+#define VEC_SCALE_2(c,a,b)			\
+{						\
+   (c)[0] = (a)*(b)[0];				\
+   (c)[1] = (a)*(b)[1];				\
+}\
+
+
+/// scalar times vector
+#define VEC_SCALE(c,a,b)			\
+{						\
+   (c)[0] = (a)*(b)[0];				\
+   (c)[1] = (a)*(b)[1];				\
+   (c)[2] = (a)*(b)[2];				\
+}\
+
+
+/// scalar times vector
+#define VEC_SCALE_4(c,a,b)			\
+{						\
+   (c)[0] = (a)*(b)[0];				\
+   (c)[1] = (a)*(b)[1];				\
+   (c)[2] = (a)*(b)[2];				\
+   (c)[3] = (a)*(b)[3];				\
+}\
+
+
+/// accumulate scaled vector
+#define VEC_ACCUM_2(c,a,b)			\
+{						\
+   (c)[0] += (a)*(b)[0];			\
+   (c)[1] += (a)*(b)[1];			\
+}\
+
+
+/// accumulate scaled vector
+#define VEC_ACCUM(c,a,b)			\
+{						\
+   (c)[0] += (a)*(b)[0];			\
+   (c)[1] += (a)*(b)[1];			\
+   (c)[2] += (a)*(b)[2];			\
+}\
+
+
+/// accumulate scaled vector
+#define VEC_ACCUM_4(c,a,b)			\
+{						\
+   (c)[0] += (a)*(b)[0];			\
+   (c)[1] += (a)*(b)[1];			\
+   (c)[2] += (a)*(b)[2];			\
+   (c)[3] += (a)*(b)[3];			\
+}\
+
+
+/// Vector dot product
+#define VEC_DOT_2(a,b) ((a)[0]*(b)[0] + (a)[1]*(b)[1])
+
+
+/// Vector dot product
+#define VEC_DOT(a,b) ((a)[0]*(b)[0] + (a)[1]*(b)[1] + (a)[2]*(b)[2])
+
+/// Vector dot product
+#define VEC_DOT_4(a,b)	((a)[0]*(b)[0] + (a)[1]*(b)[1] + (a)[2]*(b)[2] + (a)[3]*(b)[3])
+
+/// vector impact parameter (squared)
+#define VEC_IMPACT_SQ(bsq,direction,position) {\
+   GREAL _llel_ = VEC_DOT(direction, position);\
+   bsq = VEC_DOT(position, position) - _llel_*_llel_;\
+}\
+
+
+/// vector impact parameter
+#define VEC_IMPACT(bsq,direction,position)	{\
+   VEC_IMPACT_SQ(bsq,direction,position);		\
+   GIM_SQRT(bsq,bsq);					\
+}\
+
+/// Vector length
+#define VEC_LENGTH_2(a,l)\
+{\
+    GREAL _pp = VEC_DOT_2(a,a);\
+    GIM_SQRT(_pp,l);\
+}\
+
+
+/// Vector length
+#define VEC_LENGTH(a,l)\
+{\
+    GREAL _pp = VEC_DOT(a,a);\
+    GIM_SQRT(_pp,l);\
+}\
+
+
+/// Vector length
+#define VEC_LENGTH_4(a,l)\
+{\
+    GREAL _pp = VEC_DOT_4(a,a);\
+    GIM_SQRT(_pp,l);\
+}\
+
+/// Vector inv length
+#define VEC_INV_LENGTH_2(a,l)\
+{\
+    GREAL _pp = VEC_DOT_2(a,a);\
+    GIM_INV_SQRT(_pp,l);\
+}\
+
+
+/// Vector inv length
+#define VEC_INV_LENGTH(a,l)\
+{\
+    GREAL _pp = VEC_DOT(a,a);\
+    GIM_INV_SQRT(_pp,l);\
+}\
+
+
+/// Vector inv length
+#define VEC_INV_LENGTH_4(a,l)\
+{\
+    GREAL _pp = VEC_DOT_4(a,a);\
+    GIM_INV_SQRT(_pp,l);\
+}\
+
+
+
+/// distance between two points
+#define VEC_DISTANCE(_len,_va,_vb) {\
+    vec3f _tmp_;				\
+    VEC_DIFF(_tmp_, _vb, _va);			\
+    VEC_LENGTH(_tmp_,_len);			\
+}\
+
+
+/// Vector length
+#define VEC_CONJUGATE_LENGTH(a,l)\
+{\
+    GREAL _pp = 1.0 - a[0]*a[0] - a[1]*a[1] - a[2]*a[2];\
+    GIM_SQRT(_pp,l);\
+}\
+
+
+/// Vector length
+#define VEC_NORMALIZE(a) {	\
+    GREAL len;\
+    VEC_INV_LENGTH(a,len); \
+    if(len<G_REAL_INFINITY)\
+    {\
+        a[0] *= len;				\
+        a[1] *= len;				\
+        a[2] *= len;				\
+    }						\
+}\
+
+/// Set Vector size
+#define VEC_RENORMALIZE(a,newlen) {	\
+    GREAL len;\
+    VEC_INV_LENGTH(a,len); \
+    if(len<G_REAL_INFINITY)\
+    {\
+        len *= newlen;\
+        a[0] *= len;				\
+        a[1] *= len;				\
+        a[2] *= len;				\
+    }						\
+}\
+
+/// Vector cross
+#define VEC_CROSS(c,a,b)		\
+{						\
+   c[0] = (a)[1] * (b)[2] - (a)[2] * (b)[1];	\
+   c[1] = (a)[2] * (b)[0] - (a)[0] * (b)[2];	\
+   c[2] = (a)[0] * (b)[1] - (a)[1] * (b)[0];	\
+}\
+
+
+/*! Vector perp -- assumes that n is of unit length
+ * accepts vector v, subtracts out any component parallel to n */
+#define VEC_PERPENDICULAR(vp,v,n)			\
+{						\
+   GREAL dot = VEC_DOT(v, n);			\
+   vp[0] = (v)[0] - dot*(n)[0];		\
+   vp[1] = (v)[1] - dot*(n)[1];		\
+   vp[2] = (v)[2] - dot*(n)[2];		\
+}\
+
+
+/*! Vector parallel -- assumes that n is of unit length */
+#define VEC_PARALLEL(vp,v,n)			\
+{						\
+   GREAL dot = VEC_DOT(v, n);			\
+   vp[0] = (dot) * (n)[0];			\
+   vp[1] = (dot) * (n)[1];			\
+   vp[2] = (dot) * (n)[2];			\
+}\
+
+/*! Same as Vector parallel --  n can have any length
+ * accepts vector v, subtracts out any component perpendicular to n */
+#define VEC_PROJECT(vp,v,n)			\
+{ \
+	GREAL scalar = VEC_DOT(v, n);			\
+	scalar/= VEC_DOT(n, n); \
+	vp[0] = (scalar) * (n)[0];			\
+    vp[1] = (scalar) * (n)[1];			\
+    vp[2] = (scalar) * (n)[2];			\
+}\
+
+
+/*! accepts vector v*/
+#define VEC_UNPROJECT(vp,v,n)			\
+{ \
+	GREAL scalar = VEC_DOT(v, n);			\
+	scalar = VEC_DOT(n, n)/scalar; \
+	vp[0] = (scalar) * (n)[0];			\
+    vp[1] = (scalar) * (n)[1];			\
+    vp[2] = (scalar) * (n)[2];			\
+}\
+
+
+/*! Vector reflection -- assumes n is of unit length
+ Takes vector v, reflects it against reflector n, and returns vr */
+#define VEC_REFLECT(vr,v,n)			\
+{						\
+   GREAL dot = VEC_DOT(v, n);			\
+   vr[0] = (v)[0] - 2.0 * (dot) * (n)[0];	\
+   vr[1] = (v)[1] - 2.0 * (dot) * (n)[1];	\
+   vr[2] = (v)[2] - 2.0 * (dot) * (n)[2];	\
+}\
+
+
+/*! Vector blending
+Takes two vectors a, b, blends them together with two scalars */
+#define VEC_BLEND_AB(vr,sa,a,sb,b)			\
+{						\
+   vr[0] = (sa) * (a)[0] + (sb) * (b)[0];	\
+   vr[1] = (sa) * (a)[1] + (sb) * (b)[1];	\
+   vr[2] = (sa) * (a)[2] + (sb) * (b)[2];	\
+}\
+
+/*! Vector blending
+Takes two vectors a, b, blends them together with s <=1 */
+#define VEC_BLEND(vr,a,b,s) VEC_BLEND_AB(vr,(1-s),a,s,b)
+
+#define VEC_SET3(a,b,op,c) a[0]=b[0] op c[0]; a[1]=b[1] op c[1]; a[2]=b[2] op c[2];
+
+//! Finds the bigger cartesian coordinate from a vector
+#define VEC_MAYOR_COORD(vec, maxc)\
+{\
+	GREAL A[] = {fabs(vec[0]),fabs(vec[1]),fabs(vec[2])};\
+    maxc =  A[0]>A[1]?(A[0]>A[2]?0:2):(A[1]>A[2]?1:2);\
+}\
+
+//! Finds the 2 smallest cartesian coordinates from a vector
+#define VEC_MINOR_AXES(vec, i0, i1)\
+{\
+	VEC_MAYOR_COORD(vec,i0);\
+	i0 = (i0+1)%3;\
+	i1 = (i0+1)%3;\
+}\
+
+
+
+
+#define VEC_EQUAL(v1,v2) (v1[0]==v2[0]&&v1[1]==v2[1]&&v1[2]==v2[2])
+
+#define VEC_NEAR_EQUAL(v1,v2) (GIM_NEAR_EQUAL(v1[0],v2[0])&&GIM_NEAR_EQUAL(v1[1],v2[1])&&GIM_NEAR_EQUAL(v1[2],v2[2]))
+
+
+/// Vector cross
+#define X_AXIS_CROSS_VEC(dst,src)\
+{					   \
+	dst[0] = 0.0f;     \
+	dst[1] = -src[2];  \
+	dst[2] = src[1];  \
+}\
+
+#define Y_AXIS_CROSS_VEC(dst,src)\
+{					   \
+	dst[0] = src[2];     \
+	dst[1] = 0.0f;  \
+	dst[2] = -src[0];  \
+}\
+
+#define Z_AXIS_CROSS_VEC(dst,src)\
+{					   \
+	dst[0] = -src[1];     \
+	dst[1] = src[0];  \
+	dst[2] = 0.0f;  \
+}\
+
+
+
+
+
+
+/// initialize matrix
+#define IDENTIFY_MATRIX_3X3(m)			\
+{						\
+   m[0][0] = 1.0;				\
+   m[0][1] = 0.0;				\
+   m[0][2] = 0.0;				\
+						\
+   m[1][0] = 0.0;				\
+   m[1][1] = 1.0;				\
+   m[1][2] = 0.0;				\
+						\
+   m[2][0] = 0.0;				\
+   m[2][1] = 0.0;				\
+   m[2][2] = 1.0;				\
+}\
+
+/*! initialize matrix */
+#define IDENTIFY_MATRIX_4X4(m)			\
+{						\
+   m[0][0] = 1.0;				\
+   m[0][1] = 0.0;				\
+   m[0][2] = 0.0;				\
+   m[0][3] = 0.0;				\
+						\
+   m[1][0] = 0.0;				\
+   m[1][1] = 1.0;				\
+   m[1][2] = 0.0;				\
+   m[1][3] = 0.0;				\
+						\
+   m[2][0] = 0.0;				\
+   m[2][1] = 0.0;				\
+   m[2][2] = 1.0;				\
+   m[2][3] = 0.0;				\
+						\
+   m[3][0] = 0.0;				\
+   m[3][1] = 0.0;				\
+   m[3][2] = 0.0;				\
+   m[3][3] = 1.0;				\
+}\
+
+/*! initialize matrix */
+#define ZERO_MATRIX_4X4(m)			\
+{						\
+   m[0][0] = 0.0;				\
+   m[0][1] = 0.0;				\
+   m[0][2] = 0.0;				\
+   m[0][3] = 0.0;				\
+						\
+   m[1][0] = 0.0;				\
+   m[1][1] = 0.0;				\
+   m[1][2] = 0.0;				\
+   m[1][3] = 0.0;				\
+						\
+   m[2][0] = 0.0;				\
+   m[2][1] = 0.0;				\
+   m[2][2] = 0.0;				\
+   m[2][3] = 0.0;				\
+						\
+   m[3][0] = 0.0;				\
+   m[3][1] = 0.0;				\
+   m[3][2] = 0.0;				\
+   m[3][3] = 0.0;				\
+}\
+
+/*! matrix rotation  X */
+#define ROTX_CS(m,cosine,sine)		\
+{					\
+   /* rotation about the x-axis */	\
+					\
+   m[0][0] = 1.0;			\
+   m[0][1] = 0.0;			\
+   m[0][2] = 0.0;			\
+   m[0][3] = 0.0;			\
+					\
+   m[1][0] = 0.0;			\
+   m[1][1] = (cosine);			\
+   m[1][2] = (sine);			\
+   m[1][3] = 0.0;			\
+					\
+   m[2][0] = 0.0;			\
+   m[2][1] = -(sine);			\
+   m[2][2] = (cosine);			\
+   m[2][3] = 0.0;			\
+					\
+   m[3][0] = 0.0;			\
+   m[3][1] = 0.0;			\
+   m[3][2] = 0.0;			\
+   m[3][3] = 1.0;			\
+}\
+
+/*! matrix rotation  Y */
+#define ROTY_CS(m,cosine,sine)		\
+{					\
+   /* rotation about the y-axis */	\
+					\
+   m[0][0] = (cosine);			\
+   m[0][1] = 0.0;			\
+   m[0][2] = -(sine);			\
+   m[0][3] = 0.0;			\
+					\
+   m[1][0] = 0.0;			\
+   m[1][1] = 1.0;			\
+   m[1][2] = 0.0;			\
+   m[1][3] = 0.0;			\
+					\
+   m[2][0] = (sine);			\
+   m[2][1] = 0.0;			\
+   m[2][2] = (cosine);			\
+   m[2][3] = 0.0;			\
+					\
+   m[3][0] = 0.0;			\
+   m[3][1] = 0.0;			\
+   m[3][2] = 0.0;			\
+   m[3][3] = 1.0;			\
+}\
+
+/*! matrix rotation  Z */
+#define ROTZ_CS(m,cosine,sine)		\
+{					\
+   /* rotation about the z-axis */	\
+					\
+   m[0][0] = (cosine);			\
+   m[0][1] = (sine);			\
+   m[0][2] = 0.0;			\
+   m[0][3] = 0.0;			\
+					\
+   m[1][0] = -(sine);			\
+   m[1][1] = (cosine);			\
+   m[1][2] = 0.0;			\
+   m[1][3] = 0.0;			\
+					\
+   m[2][0] = 0.0;			\
+   m[2][1] = 0.0;			\
+   m[2][2] = 1.0;			\
+   m[2][3] = 0.0;			\
+					\
+   m[3][0] = 0.0;			\
+   m[3][1] = 0.0;			\
+   m[3][2] = 0.0;			\
+   m[3][3] = 1.0;			\
+}\
+
+/*! matrix copy */
+#define COPY_MATRIX_2X2(b,a)	\
+{				\
+   b[0][0] = a[0][0];		\
+   b[0][1] = a[0][1];		\
+				\
+   b[1][0] = a[1][0];		\
+   b[1][1] = a[1][1];		\
+				\
+}\
+
+
+/*! matrix copy */
+#define COPY_MATRIX_2X3(b,a)	\
+{				\
+   b[0][0] = a[0][0];		\
+   b[0][1] = a[0][1];		\
+   b[0][2] = a[0][2];		\
+				\
+   b[1][0] = a[1][0];		\
+   b[1][1] = a[1][1];		\
+   b[1][2] = a[1][2];		\
+}\
+
+
+/*! matrix copy */
+#define COPY_MATRIX_3X3(b,a)	\
+{				\
+   b[0][0] = a[0][0];		\
+   b[0][1] = a[0][1];		\
+   b[0][2] = a[0][2];		\
+				\
+   b[1][0] = a[1][0];		\
+   b[1][1] = a[1][1];		\
+   b[1][2] = a[1][2];		\
+				\
+   b[2][0] = a[2][0];		\
+   b[2][1] = a[2][1];		\
+   b[2][2] = a[2][2];		\
+}\
+
+
+/*! matrix copy */
+#define COPY_MATRIX_4X4(b,a)	\
+{				\
+   b[0][0] = a[0][0];		\
+   b[0][1] = a[0][1];		\
+   b[0][2] = a[0][2];		\
+   b[0][3] = a[0][3];		\
+				\
+   b[1][0] = a[1][0];		\
+   b[1][1] = a[1][1];		\
+   b[1][2] = a[1][2];		\
+   b[1][3] = a[1][3];		\
+				\
+   b[2][0] = a[2][0];		\
+   b[2][1] = a[2][1];		\
+   b[2][2] = a[2][2];		\
+   b[2][3] = a[2][3];		\
+				\
+   b[3][0] = a[3][0];		\
+   b[3][1] = a[3][1];		\
+   b[3][2] = a[3][2];		\
+   b[3][3] = a[3][3];		\
+}\
+
+
+/*! matrix transpose */
+#define TRANSPOSE_MATRIX_2X2(b,a)	\
+{				\
+   b[0][0] = a[0][0];		\
+   b[0][1] = a[1][0];		\
+				\
+   b[1][0] = a[0][1];		\
+   b[1][1] = a[1][1];		\
+}\
+
+
+/*! matrix transpose */
+#define TRANSPOSE_MATRIX_3X3(b,a)	\
+{				\
+   b[0][0] = a[0][0];		\
+   b[0][1] = a[1][0];		\
+   b[0][2] = a[2][0];		\
+				\
+   b[1][0] = a[0][1];		\
+   b[1][1] = a[1][1];		\
+   b[1][2] = a[2][1];		\
+				\
+   b[2][0] = a[0][2];		\
+   b[2][1] = a[1][2];		\
+   b[2][2] = a[2][2];		\
+}\
+
+
+/*! matrix transpose */
+#define TRANSPOSE_MATRIX_4X4(b,a)	\
+{				\
+   b[0][0] = a[0][0];		\
+   b[0][1] = a[1][0];		\
+   b[0][2] = a[2][0];		\
+   b[0][3] = a[3][0];		\
+				\
+   b[1][0] = a[0][1];		\
+   b[1][1] = a[1][1];		\
+   b[1][2] = a[2][1];		\
+   b[1][3] = a[3][1];		\
+				\
+   b[2][0] = a[0][2];		\
+   b[2][1] = a[1][2];		\
+   b[2][2] = a[2][2];		\
+   b[2][3] = a[3][2];		\
+				\
+   b[3][0] = a[0][3];		\
+   b[3][1] = a[1][3];		\
+   b[3][2] = a[2][3];		\
+   b[3][3] = a[3][3];		\
+}\
+
+
+/*! multiply matrix by scalar */
+#define SCALE_MATRIX_2X2(b,s,a)		\
+{					\
+   b[0][0] = (s) * a[0][0];		\
+   b[0][1] = (s) * a[0][1];		\
+					\
+   b[1][0] = (s) * a[1][0];		\
+   b[1][1] = (s) * a[1][1];		\
+}\
+
+
+/*! multiply matrix by scalar */
+#define SCALE_MATRIX_3X3(b,s,a)		\
+{					\
+   b[0][0] = (s) * a[0][0];		\
+   b[0][1] = (s) * a[0][1];		\
+   b[0][2] = (s) * a[0][2];		\
+					\
+   b[1][0] = (s) * a[1][0];		\
+   b[1][1] = (s) * a[1][1];		\
+   b[1][2] = (s) * a[1][2];		\
+					\
+   b[2][0] = (s) * a[2][0];		\
+   b[2][1] = (s) * a[2][1];		\
+   b[2][2] = (s) * a[2][2];		\
+}\
+
+
+/*! multiply matrix by scalar */
+#define SCALE_MATRIX_4X4(b,s,a)		\
+{					\
+   b[0][0] = (s) * a[0][0];		\
+   b[0][1] = (s) * a[0][1];		\
+   b[0][2] = (s) * a[0][2];		\
+   b[0][3] = (s) * a[0][3];		\
+					\
+   b[1][0] = (s) * a[1][0];		\
+   b[1][1] = (s) * a[1][1];		\
+   b[1][2] = (s) * a[1][2];		\
+   b[1][3] = (s) * a[1][3];		\
+					\
+   b[2][0] = (s) * a[2][0];		\
+   b[2][1] = (s) * a[2][1];		\
+   b[2][2] = (s) * a[2][2];		\
+   b[2][3] = (s) * a[2][3];		\
+					\
+   b[3][0] = s * a[3][0];		\
+   b[3][1] = s * a[3][1];		\
+   b[3][2] = s * a[3][2];		\
+   b[3][3] = s * a[3][3];		\
+}\
+
+
+/*! multiply matrix by scalar */
+#define SCALE_VEC_MATRIX_2X2(b,svec,a)		\
+{					\
+   b[0][0] = svec[0] * a[0][0];		\
+   b[1][0] = svec[0] * a[1][0];		\
+					\
+   b[0][1] = svec[1] * a[0][1];		\
+   b[1][1] = svec[1] * a[1][1];		\
+}\
+
+
+/*! multiply matrix by scalar. Each columns is scaled by each scalar vector component */
+#define SCALE_VEC_MATRIX_3X3(b,svec,a)		\
+{					\
+   b[0][0] = svec[0] * a[0][0];		\
+   b[1][0] = svec[0] * a[1][0];		\
+   b[2][0] = svec[0] * a[2][0];		\
+					\
+   b[0][1] = svec[1] * a[0][1];		\
+   b[1][1] = svec[1] * a[1][1];		\
+   b[2][1] = svec[1] * a[2][1];		\
+					\
+   b[0][2] = svec[2] * a[0][2];		\
+   b[1][2] = svec[2] * a[1][2];		\
+   b[2][2] = svec[2] * a[2][2];		\
+}\
+
+
+/*! multiply matrix by scalar */
+#define SCALE_VEC_MATRIX_4X4(b,svec,a)		\
+{					\
+   b[0][0] = svec[0] * a[0][0];		\
+   b[1][0] = svec[0] * a[1][0];		\
+   b[2][0] = svec[0] * a[2][0];		\
+   b[3][0] = svec[0] * a[3][0];		\
+					\
+   b[0][1] = svec[1] * a[0][1];		\
+   b[1][1] = svec[1] * a[1][1];		\
+   b[2][1] = svec[1] * a[2][1];		\
+   b[3][1] = svec[1] * a[3][1];		\
+					\
+   b[0][2] = svec[2] * a[0][2];		\
+   b[1][2] = svec[2] * a[1][2];		\
+   b[2][2] = svec[2] * a[2][2];		\
+   b[3][2] = svec[2] * a[3][2];		\
+   \
+   b[0][3] = svec[3] * a[0][3];		\
+   b[1][3] = svec[3] * a[1][3];		\
+   b[2][3] = svec[3] * a[2][3];		\
+   b[3][3] = svec[3] * a[3][3];		\
+}\
+
+
+/*! multiply matrix by scalar */
+#define ACCUM_SCALE_MATRIX_2X2(b,s,a)		\
+{					\
+   b[0][0] += (s) * a[0][0];		\
+   b[0][1] += (s) * a[0][1];		\
+					\
+   b[1][0] += (s) * a[1][0];		\
+   b[1][1] += (s) * a[1][1];		\
+}\
+
+
+/*! multiply matrix by scalar */
+#define ACCUM_SCALE_MATRIX_3X3(b,s,a)		\
+{					\
+   b[0][0] += (s) * a[0][0];		\
+   b[0][1] += (s) * a[0][1];		\
+   b[0][2] += (s) * a[0][2];		\
+					\
+   b[1][0] += (s) * a[1][0];		\
+   b[1][1] += (s) * a[1][1];		\
+   b[1][2] += (s) * a[1][2];		\
+					\
+   b[2][0] += (s) * a[2][0];		\
+   b[2][1] += (s) * a[2][1];		\
+   b[2][2] += (s) * a[2][2];		\
+}\
+
+
+/*! multiply matrix by scalar */
+#define ACCUM_SCALE_MATRIX_4X4(b,s,a)		\
+{					\
+   b[0][0] += (s) * a[0][0];		\
+   b[0][1] += (s) * a[0][1];		\
+   b[0][2] += (s) * a[0][2];		\
+   b[0][3] += (s) * a[0][3];		\
+					\
+   b[1][0] += (s) * a[1][0];		\
+   b[1][1] += (s) * a[1][1];		\
+   b[1][2] += (s) * a[1][2];		\
+   b[1][3] += (s) * a[1][3];		\
+					\
+   b[2][0] += (s) * a[2][0];		\
+   b[2][1] += (s) * a[2][1];		\
+   b[2][2] += (s) * a[2][2];		\
+   b[2][3] += (s) * a[2][3];		\
+					\
+   b[3][0] += (s) * a[3][0];		\
+   b[3][1] += (s) * a[3][1];		\
+   b[3][2] += (s) * a[3][2];		\
+   b[3][3] += (s) * a[3][3];		\
+}\
+
+/*! matrix product */
+/*! c[x][y] = a[x][0]*b[0][y]+a[x][1]*b[1][y]+a[x][2]*b[2][y]+a[x][3]*b[3][y];*/
+#define MATRIX_PRODUCT_2X2(c,a,b)		\
+{						\
+   c[0][0] = a[0][0]*b[0][0]+a[0][1]*b[1][0];	\
+   c[0][1] = a[0][0]*b[0][1]+a[0][1]*b[1][1];	\
+						\
+   c[1][0] = a[1][0]*b[0][0]+a[1][1]*b[1][0];	\
+   c[1][1] = a[1][0]*b[0][1]+a[1][1]*b[1][1];	\
+						\
+}\
+
+/*! matrix product */
+/*! c[x][y] = a[x][0]*b[0][y]+a[x][1]*b[1][y]+a[x][2]*b[2][y]+a[x][3]*b[3][y];*/
+#define MATRIX_PRODUCT_3X3(c,a,b)				\
+{								\
+   c[0][0] = a[0][0]*b[0][0]+a[0][1]*b[1][0]+a[0][2]*b[2][0];	\
+   c[0][1] = a[0][0]*b[0][1]+a[0][1]*b[1][1]+a[0][2]*b[2][1];	\
+   c[0][2] = a[0][0]*b[0][2]+a[0][1]*b[1][2]+a[0][2]*b[2][2];	\
+								\
+   c[1][0] = a[1][0]*b[0][0]+a[1][1]*b[1][0]+a[1][2]*b[2][0];	\
+   c[1][1] = a[1][0]*b[0][1]+a[1][1]*b[1][1]+a[1][2]*b[2][1];	\
+   c[1][2] = a[1][0]*b[0][2]+a[1][1]*b[1][2]+a[1][2]*b[2][2];	\
+								\
+   c[2][0] = a[2][0]*b[0][0]+a[2][1]*b[1][0]+a[2][2]*b[2][0];	\
+   c[2][1] = a[2][0]*b[0][1]+a[2][1]*b[1][1]+a[2][2]*b[2][1];	\
+   c[2][2] = a[2][0]*b[0][2]+a[2][1]*b[1][2]+a[2][2]*b[2][2];	\
+}\
+
+
+/*! matrix product */
+/*! c[x][y] = a[x][0]*b[0][y]+a[x][1]*b[1][y]+a[x][2]*b[2][y]+a[x][3]*b[3][y];*/
+#define MATRIX_PRODUCT_4X4(c,a,b)		\
+{						\
+   c[0][0] = a[0][0]*b[0][0]+a[0][1]*b[1][0]+a[0][2]*b[2][0]+a[0][3]*b[3][0];\
+   c[0][1] = a[0][0]*b[0][1]+a[0][1]*b[1][1]+a[0][2]*b[2][1]+a[0][3]*b[3][1];\
+   c[0][2] = a[0][0]*b[0][2]+a[0][1]*b[1][2]+a[0][2]*b[2][2]+a[0][3]*b[3][2];\
+   c[0][3] = a[0][0]*b[0][3]+a[0][1]*b[1][3]+a[0][2]*b[2][3]+a[0][3]*b[3][3];\
+						\
+   c[1][0] = a[1][0]*b[0][0]+a[1][1]*b[1][0]+a[1][2]*b[2][0]+a[1][3]*b[3][0];\
+   c[1][1] = a[1][0]*b[0][1]+a[1][1]*b[1][1]+a[1][2]*b[2][1]+a[1][3]*b[3][1];\
+   c[1][2] = a[1][0]*b[0][2]+a[1][1]*b[1][2]+a[1][2]*b[2][2]+a[1][3]*b[3][2];\
+   c[1][3] = a[1][0]*b[0][3]+a[1][1]*b[1][3]+a[1][2]*b[2][3]+a[1][3]*b[3][3];\
+						\
+   c[2][0] = a[2][0]*b[0][0]+a[2][1]*b[1][0]+a[2][2]*b[2][0]+a[2][3]*b[3][0];\
+   c[2][1] = a[2][0]*b[0][1]+a[2][1]*b[1][1]+a[2][2]*b[2][1]+a[2][3]*b[3][1];\
+   c[2][2] = a[2][0]*b[0][2]+a[2][1]*b[1][2]+a[2][2]*b[2][2]+a[2][3]*b[3][2];\
+   c[2][3] = a[2][0]*b[0][3]+a[2][1]*b[1][3]+a[2][2]*b[2][3]+a[2][3]*b[3][3];\
+						\
+   c[3][0] = a[3][0]*b[0][0]+a[3][1]*b[1][0]+a[3][2]*b[2][0]+a[3][3]*b[3][0];\
+   c[3][1] = a[3][0]*b[0][1]+a[3][1]*b[1][1]+a[3][2]*b[2][1]+a[3][3]*b[3][1];\
+   c[3][2] = a[3][0]*b[0][2]+a[3][1]*b[1][2]+a[3][2]*b[2][2]+a[3][3]*b[3][2];\
+   c[3][3] = a[3][0]*b[0][3]+a[3][1]*b[1][3]+a[3][2]*b[2][3]+a[3][3]*b[3][3];\
+}\
+
+
+/*! matrix times vector */
+#define MAT_DOT_VEC_2X2(p,m,v)					\
+{								\
+   p[0] = m[0][0]*v[0] + m[0][1]*v[1];				\
+   p[1] = m[1][0]*v[0] + m[1][1]*v[1];				\
+}\
+
+
+/*! matrix times vector */
+#define MAT_DOT_VEC_3X3(p,m,v)					\
+{								\
+   p[0] = m[0][0]*v[0] + m[0][1]*v[1] + m[0][2]*v[2];		\
+   p[1] = m[1][0]*v[0] + m[1][1]*v[1] + m[1][2]*v[2];		\
+   p[2] = m[2][0]*v[0] + m[2][1]*v[1] + m[2][2]*v[2];		\
+}\
+
+
+/*! matrix times vector
+v is a vec4f
+*/
+#define MAT_DOT_VEC_4X4(p,m,v)					\
+{								\
+   p[0] = m[0][0]*v[0] + m[0][1]*v[1] + m[0][2]*v[2] + m[0][3]*v[3];	\
+   p[1] = m[1][0]*v[0] + m[1][1]*v[1] + m[1][2]*v[2] + m[1][3]*v[3];	\
+   p[2] = m[2][0]*v[0] + m[2][1]*v[1] + m[2][2]*v[2] + m[2][3]*v[3];	\
+   p[3] = m[3][0]*v[0] + m[3][1]*v[1] + m[3][2]*v[2] + m[3][3]*v[3];	\
+}\
+
+/*! matrix times vector
+v is a vec3f
+and m is a mat4f<br>
+Last column is added as the position
+*/
+#define MAT_DOT_VEC_3X4(p,m,v)					\
+{								\
+   p[0] = m[0][0]*v[0] + m[0][1]*v[1] + m[0][2]*v[2] + m[0][3];	\
+   p[1] = m[1][0]*v[0] + m[1][1]*v[1] + m[1][2]*v[2] + m[1][3];	\
+   p[2] = m[2][0]*v[0] + m[2][1]*v[1] + m[2][2]*v[2] + m[2][3];	\
+}\
+
+
+/*! vector transpose times matrix */
+/*! p[j] = v[0]*m[0][j] + v[1]*m[1][j] + v[2]*m[2][j]; */
+#define VEC_DOT_MAT_3X3(p,v,m)					\
+{								\
+   p[0] = v[0]*m[0][0] + v[1]*m[1][0] + v[2]*m[2][0];		\
+   p[1] = v[0]*m[0][1] + v[1]*m[1][1] + v[2]*m[2][1];		\
+   p[2] = v[0]*m[0][2] + v[1]*m[1][2] + v[2]*m[2][2];		\
+}\
+
+
+/*! affine matrix times vector */
+/** The matrix is assumed to be an affine matrix, with last two
+ * entries representing a translation */
+#define MAT_DOT_VEC_2X3(p,m,v)					\
+{								\
+   p[0] = m[0][0]*v[0] + m[0][1]*v[1] + m[0][2];		\
+   p[1] = m[1][0]*v[0] + m[1][1]*v[1] + m[1][2];		\
+}\
+
+//! Transform a plane
+#define MAT_TRANSFORM_PLANE_4X4(pout,m,plane)\
+{								\
+   pout[0] = m[0][0]*plane[0] + m[0][1]*plane[1]  + m[0][2]*plane[2];\
+   pout[1] = m[1][0]*plane[0] + m[1][1]*plane[1]  + m[1][2]*plane[2];\
+   pout[2] = m[2][0]*plane[0] + m[2][1]*plane[1]  + m[2][2]*plane[2];\
+   pout[3] = m[0][3]*pout[0] + m[1][3]*pout[1]  + m[2][3]*pout[2] + plane[3];\
+}\
+
+
+
+/** inverse transpose of matrix times vector
+ *
+ * This macro computes inverse transpose of matrix m,
+ * and multiplies vector v into it, to yeild vector p
+ *
+ * DANGER !!! Do Not use this on normal vectors!!!
+ * It will leave normals the wrong length !!!
+ * See macro below for use on normals.
+ */
+#define INV_TRANSP_MAT_DOT_VEC_2X2(p,m,v)			\
+{								\
+   GREAL det;						\
+								\
+   det = m[0][0]*m[1][1] - m[0][1]*m[1][0];			\
+   p[0] = m[1][1]*v[0] - m[1][0]*v[1];				\
+   p[1] = - m[0][1]*v[0] + m[0][0]*v[1];			\
+								\
+   /* if matrix not singular, and not orthonormal, then renormalize */ \
+   if ((det!=1.0f) && (det != 0.0f)) {				\
+      det = 1.0f / det;						\
+      p[0] *= det;						\
+      p[1] *= det;						\
+   }								\
+}\
+
+
+/** transform normal vector by inverse transpose of matrix
+ * and then renormalize the vector
+ *
+ * This macro computes inverse transpose of matrix m,
+ * and multiplies vector v into it, to yeild vector p
+ * Vector p is then normalized.
+ */
+#define NORM_XFORM_2X2(p,m,v)					\
+{								\
+   GREAL len;							\
+								\
+   /* do nothing if off-diagonals are zero and diagonals are 	\
+    * equal */							\
+   if ((m[0][1] != 0.0) || (m[1][0] != 0.0) || (m[0][0] != m[1][1])) { \
+      p[0] = m[1][1]*v[0] - m[1][0]*v[1];			\
+      p[1] = - m[0][1]*v[0] + m[0][0]*v[1];			\
+								\
+      len = p[0]*p[0] + p[1]*p[1];				\
+      GIM_INV_SQRT(len,len);					\
+      p[0] *= len;						\
+      p[1] *= len;						\
+   } else {							\
+      VEC_COPY_2 (p, v);					\
+   }								\
+}\
+
+
+/** outer product of vector times vector transpose
+ *
+ * The outer product of vector v and vector transpose t yeilds
+ * dyadic matrix m.
+ */
+#define OUTER_PRODUCT_2X2(m,v,t)				\
+{								\
+   m[0][0] = v[0] * t[0];					\
+   m[0][1] = v[0] * t[1];					\
+								\
+   m[1][0] = v[1] * t[0];					\
+   m[1][1] = v[1] * t[1];					\
+}\
+
+
+/** outer product of vector times vector transpose
+ *
+ * The outer product of vector v and vector transpose t yeilds
+ * dyadic matrix m.
+ */
+#define OUTER_PRODUCT_3X3(m,v,t)				\
+{								\
+   m[0][0] = v[0] * t[0];					\
+   m[0][1] = v[0] * t[1];					\
+   m[0][2] = v[0] * t[2];					\
+								\
+   m[1][0] = v[1] * t[0];					\
+   m[1][1] = v[1] * t[1];					\
+   m[1][2] = v[1] * t[2];					\
+								\
+   m[2][0] = v[2] * t[0];					\
+   m[2][1] = v[2] * t[1];					\
+   m[2][2] = v[2] * t[2];					\
+}\
+
+
+/** outer product of vector times vector transpose
+ *
+ * The outer product of vector v and vector transpose t yeilds
+ * dyadic matrix m.
+ */
+#define OUTER_PRODUCT_4X4(m,v,t)				\
+{								\
+   m[0][0] = v[0] * t[0];					\
+   m[0][1] = v[0] * t[1];					\
+   m[0][2] = v[0] * t[2];					\
+   m[0][3] = v[0] * t[3];					\
+								\
+   m[1][0] = v[1] * t[0];					\
+   m[1][1] = v[1] * t[1];					\
+   m[1][2] = v[1] * t[2];					\
+   m[1][3] = v[1] * t[3];					\
+								\
+   m[2][0] = v[2] * t[0];					\
+   m[2][1] = v[2] * t[1];					\
+   m[2][2] = v[2] * t[2];					\
+   m[2][3] = v[2] * t[3];					\
+								\
+   m[3][0] = v[3] * t[0];					\
+   m[3][1] = v[3] * t[1];					\
+   m[3][2] = v[3] * t[2];					\
+   m[3][3] = v[3] * t[3];					\
+}\
+
+
+/** outer product of vector times vector transpose
+ *
+ * The outer product of vector v and vector transpose t yeilds
+ * dyadic matrix m.
+ */
+#define ACCUM_OUTER_PRODUCT_2X2(m,v,t)				\
+{								\
+   m[0][0] += v[0] * t[0];					\
+   m[0][1] += v[0] * t[1];					\
+								\
+   m[1][0] += v[1] * t[0];					\
+   m[1][1] += v[1] * t[1];					\
+}\
+
+
+/** outer product of vector times vector transpose
+ *
+ * The outer product of vector v and vector transpose t yeilds
+ * dyadic matrix m.
+ */
+#define ACCUM_OUTER_PRODUCT_3X3(m,v,t)				\
+{								\
+   m[0][0] += v[0] * t[0];					\
+   m[0][1] += v[0] * t[1];					\
+   m[0][2] += v[0] * t[2];					\
+								\
+   m[1][0] += v[1] * t[0];					\
+   m[1][1] += v[1] * t[1];					\
+   m[1][2] += v[1] * t[2];					\
+								\
+   m[2][0] += v[2] * t[0];					\
+   m[2][1] += v[2] * t[1];					\
+   m[2][2] += v[2] * t[2];					\
+}\
+
+
+/** outer product of vector times vector transpose
+ *
+ * The outer product of vector v and vector transpose t yeilds
+ * dyadic matrix m.
+ */
+#define ACCUM_OUTER_PRODUCT_4X4(m,v,t)				\
+{								\
+   m[0][0] += v[0] * t[0];					\
+   m[0][1] += v[0] * t[1];					\
+   m[0][2] += v[0] * t[2];					\
+   m[0][3] += v[0] * t[3];					\
+								\
+   m[1][0] += v[1] * t[0];					\
+   m[1][1] += v[1] * t[1];					\
+   m[1][2] += v[1] * t[2];					\
+   m[1][3] += v[1] * t[3];					\
+								\
+   m[2][0] += v[2] * t[0];					\
+   m[2][1] += v[2] * t[1];					\
+   m[2][2] += v[2] * t[2];					\
+   m[2][3] += v[2] * t[3];					\
+								\
+   m[3][0] += v[3] * t[0];					\
+   m[3][1] += v[3] * t[1];					\
+   m[3][2] += v[3] * t[2];					\
+   m[3][3] += v[3] * t[3];					\
+}\
+
+
+/** determinant of matrix
+ *
+ * Computes determinant of matrix m, returning d
+ */
+#define DETERMINANT_2X2(d,m)					\
+{								\
+   d = m[0][0] * m[1][1] - m[0][1] * m[1][0];			\
+}\
+
+
+/** determinant of matrix
+ *
+ * Computes determinant of matrix m, returning d
+ */
+#define DETERMINANT_3X3(d,m)					\
+{								\
+   d = m[0][0] * (m[1][1]*m[2][2] - m[1][2] * m[2][1]);		\
+   d -= m[0][1] * (m[1][0]*m[2][2] - m[1][2] * m[2][0]);	\
+   d += m[0][2] * (m[1][0]*m[2][1] - m[1][1] * m[2][0]);	\
+}\
+
+
+/** i,j,th cofactor of a 4x4 matrix
+ *
+ */
+#define COFACTOR_4X4_IJ(fac,m,i,j) 				\
+{								\
+   GUINT __ii[4], __jj[4], __k;						\
+								\
+   for (__k=0; __k<i; __k++) __ii[__k] = __k;				\
+   for (__k=i; __k<3; __k++) __ii[__k] = __k+1;				\
+   for (__k=0; __k<j; __k++) __jj[__k] = __k;				\
+   for (__k=j; __k<3; __k++) __jj[__k] = __k+1;				\
+								\
+   (fac) = m[__ii[0]][__jj[0]] * (m[__ii[1]][__jj[1]]*m[__ii[2]][__jj[2]] 	\
+                            - m[__ii[1]][__jj[2]]*m[__ii[2]][__jj[1]]); \
+   (fac) -= m[__ii[0]][__jj[1]] * (m[__ii[1]][__jj[0]]*m[__ii[2]][__jj[2]]	\
+                             - m[__ii[1]][__jj[2]]*m[__ii[2]][__jj[0]]);\
+   (fac) += m[__ii[0]][__jj[2]] * (m[__ii[1]][__jj[0]]*m[__ii[2]][__jj[1]]	\
+                             - m[__ii[1]][__jj[1]]*m[__ii[2]][__jj[0]]);\
+								\
+   __k = i+j;							\
+   if ( __k != (__k/2)*2) {						\
+      (fac) = -(fac);						\
+   }								\
+}\
+
+
+/** determinant of matrix
+ *
+ * Computes determinant of matrix m, returning d
+ */
+#define DETERMINANT_4X4(d,m)					\
+{								\
+   GREAL cofac;						\
+   COFACTOR_4X4_IJ (cofac, m, 0, 0);				\
+   d = m[0][0] * cofac;						\
+   COFACTOR_4X4_IJ (cofac, m, 0, 1);				\
+   d += m[0][1] * cofac;					\
+   COFACTOR_4X4_IJ (cofac, m, 0, 2);				\
+   d += m[0][2] * cofac;					\
+   COFACTOR_4X4_IJ (cofac, m, 0, 3);				\
+   d += m[0][3] * cofac;					\
+}\
+
+
+/** cofactor of matrix
+ *
+ * Computes cofactor of matrix m, returning a
+ */
+#define COFACTOR_2X2(a,m)					\
+{								\
+   a[0][0] = (m)[1][1];						\
+   a[0][1] = - (m)[1][0];						\
+   a[1][0] = - (m)[0][1];						\
+   a[1][1] = (m)[0][0];						\
+}\
+
+
+/** cofactor of matrix
+ *
+ * Computes cofactor of matrix m, returning a
+ */
+#define COFACTOR_3X3(a,m)					\
+{								\
+   a[0][0] = m[1][1]*m[2][2] - m[1][2]*m[2][1];			\
+   a[0][1] = - (m[1][0]*m[2][2] - m[2][0]*m[1][2]);		\
+   a[0][2] = m[1][0]*m[2][1] - m[1][1]*m[2][0];			\
+   a[1][0] = - (m[0][1]*m[2][2] - m[0][2]*m[2][1]);		\
+   a[1][1] = m[0][0]*m[2][2] - m[0][2]*m[2][0];			\
+   a[1][2] = - (m[0][0]*m[2][1] - m[0][1]*m[2][0]);		\
+   a[2][0] = m[0][1]*m[1][2] - m[0][2]*m[1][1];			\
+   a[2][1] = - (m[0][0]*m[1][2] - m[0][2]*m[1][0]);		\
+   a[2][2] = m[0][0]*m[1][1] - m[0][1]*m[1][0]);		\
+}\
+
+
+/** cofactor of matrix
+ *
+ * Computes cofactor of matrix m, returning a
+ */
+#define COFACTOR_4X4(a,m)					\
+{								\
+   int i,j;							\
+								\
+   for (i=0; i<4; i++) {					\
+      for (j=0; j<4; j++) {					\
+         COFACTOR_4X4_IJ (a[i][j], m, i, j);			\
+      }								\
+   }								\
+}\
+
+
+/** adjoint of matrix
+ *
+ * Computes adjoint of matrix m, returning a
+ * (Note that adjoint is just the transpose of the cofactor matrix)
+ */
+#define ADJOINT_2X2(a,m)					\
+{								\
+   a[0][0] = (m)[1][1];						\
+   a[1][0] = - (m)[1][0];						\
+   a[0][1] = - (m)[0][1];						\
+   a[1][1] = (m)[0][0];						\
+}\
+
+
+/** adjoint of matrix
+ *
+ * Computes adjoint of matrix m, returning a
+ * (Note that adjoint is just the transpose of the cofactor matrix)
+ */
+#define ADJOINT_3X3(a,m)					\
+{								\
+   a[0][0] = m[1][1]*m[2][2] - m[1][2]*m[2][1];			\
+   a[1][0] = - (m[1][0]*m[2][2] - m[2][0]*m[1][2]);		\
+   a[2][0] = m[1][0]*m[2][1] - m[1][1]*m[2][0];			\
+   a[0][1] = - (m[0][1]*m[2][2] - m[0][2]*m[2][1]);		\
+   a[1][1] = m[0][0]*m[2][2] - m[0][2]*m[2][0];			\
+   a[2][1] = - (m[0][0]*m[2][1] - m[0][1]*m[2][0]);		\
+   a[0][2] = m[0][1]*m[1][2] - m[0][2]*m[1][1];			\
+   a[1][2] = - (m[0][0]*m[1][2] - m[0][2]*m[1][0]);		\
+   a[2][2] = m[0][0]*m[1][1] - m[0][1]*m[1][0]);		\
+}\
+
+
+/** adjoint of matrix
+ *
+ * Computes adjoint of matrix m, returning a
+ * (Note that adjoint is just the transpose of the cofactor matrix)
+ */
+#define ADJOINT_4X4(a,m)					\
+{								\
+   char _i_,_j_;							\
+								\
+   for (_i_=0; _i_<4; _i_++) {					\
+      for (_j_=0; _j_<4; _j_++) {					\
+         COFACTOR_4X4_IJ (a[_j_][_i_], m, _i_, _j_);			\
+      }								\
+   }								\
+}\
+
+
+/** compute adjoint of matrix and scale
+ *
+ * Computes adjoint of matrix m, scales it by s, returning a
+ */
+#define SCALE_ADJOINT_2X2(a,s,m)				\
+{								\
+   a[0][0] = (s) * m[1][1];					\
+   a[1][0] = - (s) * m[1][0];					\
+   a[0][1] = - (s) * m[0][1];					\
+   a[1][1] = (s) * m[0][0];					\
+}\
+
+
+/** compute adjoint of matrix and scale
+ *
+ * Computes adjoint of matrix m, scales it by s, returning a
+ */
+#define SCALE_ADJOINT_3X3(a,s,m)				\
+{								\
+   a[0][0] = (s) * (m[1][1] * m[2][2] - m[1][2] * m[2][1]);	\
+   a[1][0] = (s) * (m[1][2] * m[2][0] - m[1][0] * m[2][2]);	\
+   a[2][0] = (s) * (m[1][0] * m[2][1] - m[1][1] * m[2][0]);	\
+								\
+   a[0][1] = (s) * (m[0][2] * m[2][1] - m[0][1] * m[2][2]);	\
+   a[1][1] = (s) * (m[0][0] * m[2][2] - m[0][2] * m[2][0]);	\
+   a[2][1] = (s) * (m[0][1] * m[2][0] - m[0][0] * m[2][1]);	\
+								\
+   a[0][2] = (s) * (m[0][1] * m[1][2] - m[0][2] * m[1][1]);	\
+   a[1][2] = (s) * (m[0][2] * m[1][0] - m[0][0] * m[1][2]);	\
+   a[2][2] = (s) * (m[0][0] * m[1][1] - m[0][1] * m[1][0]);	\
+}\
+
+
+/** compute adjoint of matrix and scale
+ *
+ * Computes adjoint of matrix m, scales it by s, returning a
+ */
+#define SCALE_ADJOINT_4X4(a,s,m)				\
+{								\
+   char _i_,_j_; \
+   for (_i_=0; _i_<4; _i_++) {					\
+      for (_j_=0; _j_<4; _j_++) {					\
+         COFACTOR_4X4_IJ (a[_j_][_i_], m, _i_, _j_);			\
+         a[_j_][_i_] *= s;						\
+      }								\
+   }								\
+}\
+
+/** inverse of matrix
+ *
+ * Compute inverse of matrix a, returning determinant m and
+ * inverse b
+ */
+#define INVERT_2X2(b,det,a)			\
+{						\
+   GREAL _tmp_;					\
+   DETERMINANT_2X2 (det, a);			\
+   _tmp_ = 1.0 / (det);				\
+   SCALE_ADJOINT_2X2 (b, _tmp_, a);		\
+}\
+
+
+/** inverse of matrix
+ *
+ * Compute inverse of matrix a, returning determinant m and
+ * inverse b
+ */
+#define INVERT_3X3(b,det,a)			\
+{						\
+   GREAL _tmp_;					\
+   DETERMINANT_3X3 (det, a);			\
+   _tmp_ = 1.0 / (det);				\
+   SCALE_ADJOINT_3X3 (b, _tmp_, a);		\
+}\
+
+
+/** inverse of matrix
+ *
+ * Compute inverse of matrix a, returning determinant m and
+ * inverse b
+ */
+#define INVERT_4X4(b,det,a)			\
+{						\
+   GREAL _tmp_;					\
+   DETERMINANT_4X4 (det, a);			\
+   _tmp_ = 1.0 / (det);				\
+   SCALE_ADJOINT_4X4 (b, _tmp_, a);		\
+}\
+
+//! Get the triple(3) row of a transform matrix
+#define MAT_GET_ROW(mat,vec3,rowindex)\
+{\
+    vec3[0] = mat[rowindex][0];\
+    vec3[1] = mat[rowindex][1];\
+    vec3[2] = mat[rowindex][2]; \
+}\
+
+//! Get the tuple(2) row of a transform matrix
+#define MAT_GET_ROW2(mat,vec2,rowindex)\
+{\
+    vec2[0] = mat[rowindex][0];\
+    vec2[1] = mat[rowindex][1];\
+}\
+
+
+//! Get the quad (4) row of a transform matrix
+#define MAT_GET_ROW4(mat,vec4,rowindex)\
+{\
+    vec4[0] = mat[rowindex][0];\
+    vec4[1] = mat[rowindex][1];\
+    vec4[2] = mat[rowindex][2];\
+    vec4[3] = mat[rowindex][3];\
+}\
+
+//! Get the triple(3) col of a transform matrix
+#define MAT_GET_COL(mat,vec3,colindex)\
+{\
+    vec3[0] = mat[0][colindex];\
+    vec3[1] = mat[1][colindex];\
+    vec3[2] = mat[2][colindex]; \
+}\
+
+//! Get the tuple(2) col of a transform matrix
+#define MAT_GET_COL2(mat,vec2,colindex)\
+{\
+    vec2[0] = mat[0][colindex];\
+    vec2[1] = mat[1][colindex];\
+}\
+
+
+//! Get the quad (4) col of a transform matrix
+#define MAT_GET_COL4(mat,vec4,colindex)\
+{\
+    vec4[0] = mat[0][colindex];\
+    vec4[1] = mat[1][colindex];\
+    vec4[2] = mat[2][colindex];\
+    vec4[3] = mat[3][colindex];\
+}\
+
+//! Get the triple(3) col of a transform matrix
+#define MAT_GET_X(mat,vec3)\
+{\
+    MAT_GET_COL(mat,vec3,0);\
+}\
+
+//! Get the triple(3) col of a transform matrix
+#define MAT_GET_Y(mat,vec3)\
+{\
+    MAT_GET_COL(mat,vec3,1);\
+}\
+
+//! Get the triple(3) col of a transform matrix
+#define MAT_GET_Z(mat,vec3)\
+{\
+    MAT_GET_COL(mat,vec3,2);\
+}\
+
+
+//! Get the triple(3) col of a transform matrix
+#define MAT_SET_X(mat,vec3)\
+{\
+    mat[0][0] = vec3[0];\
+    mat[1][0] = vec3[1];\
+    mat[2][0] = vec3[2];\
+}\
+
+//! Get the triple(3) col of a transform matrix
+#define MAT_SET_Y(mat,vec3)\
+{\
+    mat[0][1] = vec3[0];\
+    mat[1][1] = vec3[1];\
+    mat[2][1] = vec3[2];\
+}\
+
+//! Get the triple(3) col of a transform matrix
+#define MAT_SET_Z(mat,vec3)\
+{\
+    mat[0][2] = vec3[0];\
+    mat[1][2] = vec3[1];\
+    mat[2][2] = vec3[2];\
+}\
+
+
+//! Get the triple(3) col of a transform matrix
+#define MAT_GET_TRANSLATION(mat,vec3)\
+{\
+    vec3[0] = mat[0][3];\
+    vec3[1] = mat[1][3];\
+    vec3[2] = mat[2][3]; \
+}\
+
+//! Set the triple(3) col of a transform matrix
+#define MAT_SET_TRANSLATION(mat,vec3)\
+{\
+    mat[0][3] = vec3[0];\
+    mat[1][3] = vec3[1];\
+    mat[2][3] = vec3[2]; \
+}\
+
+
+
+//! Returns the dot product between a vec3f and the row of a matrix
+#define MAT_DOT_ROW(mat,vec3,rowindex) (vec3[0]*mat[rowindex][0] + vec3[1]*mat[rowindex][1] + vec3[2]*mat[rowindex][2])
+
+//! Returns the dot product between a vec2f and the row of a matrix
+#define MAT_DOT_ROW2(mat,vec2,rowindex) (vec2[0]*mat[rowindex][0] + vec2[1]*mat[rowindex][1])
+
+//! Returns the dot product between a vec4f and the row of a matrix
+#define MAT_DOT_ROW4(mat,vec4,rowindex) (vec4[0]*mat[rowindex][0] + vec4[1]*mat[rowindex][1] + vec4[2]*mat[rowindex][2] + vec4[3]*mat[rowindex][3])
+
+
+//! Returns the dot product between a vec3f and the col of a matrix
+#define MAT_DOT_COL(mat,vec3,colindex) (vec3[0]*mat[0][colindex] + vec3[1]*mat[1][colindex] + vec3[2]*mat[2][colindex])
+
+//! Returns the dot product between a vec2f and the col of a matrix
+#define MAT_DOT_COL2(mat,vec2,colindex) (vec2[0]*mat[0][colindex] + vec2[1]*mat[1][colindex])
+
+//! Returns the dot product between a vec4f and the col of a matrix
+#define MAT_DOT_COL4(mat,vec4,colindex) (vec4[0]*mat[0][colindex] + vec4[1]*mat[1][colindex] + vec4[2]*mat[2][colindex] + vec4[3]*mat[3][colindex])
+
+/*!Transpose matrix times vector
+v is a vec3f
+and m is a mat4f<br>
+*/
+#define INV_MAT_DOT_VEC_3X3(p,m,v)					\
+{								\
+   p[0] = MAT_DOT_COL(m,v,0); \
+   p[1] = MAT_DOT_COL(m,v,1);	\
+   p[2] = MAT_DOT_COL(m,v,2);	\
+}\
+
+
+
+#endif // GIM_VECTOR_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_math.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_math.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_math.h	(revision 2431)
@@ -0,0 +1,157 @@
+#ifndef GIM_MATH_H_INCLUDED
+#define GIM_MATH_H_INCLUDED
+/*! \file gim_math.h
+\author Francisco Len Nßjera
+*/
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+#include "LinearMath/btScalar.h"
+
+
+
+#define GREAL btScalar
+#define GREAL2 double
+#define GINT int
+#define GUINT unsigned int
+#define GSHORT short
+#define GUSHORT unsigned short
+#define GINT64 long long
+#define GUINT64 unsigned long long
+
+
+
+#define G_PI 3.14159265358979f
+#define G_HALF_PI 1.5707963f
+//267948966
+#define G_TWO_PI 6.28318530f
+//71795864
+#define G_ROOT3 1.73205f
+#define G_ROOT2 1.41421f
+#define G_UINT_INFINITY 0xffffffff //!< A very very high value
+#define G_REAL_INFINITY FLT_MAX
+#define	G_SIGN_BITMASK			0x80000000
+#define G_EPSILON SIMD_EPSILON
+
+
+
+enum GIM_SCALAR_TYPES
+{
+	G_STYPE_REAL =0,
+	G_STYPE_REAL2,
+	G_STYPE_SHORT,
+	G_STYPE_USHORT,
+	G_STYPE_INT,
+	G_STYPE_UINT,
+	G_STYPE_INT64,
+	G_STYPE_UINT64
+};
+
+
+
+#define G_DEGTORAD(X) ((X)*3.1415926f/180.0f)
+#define G_RADTODEG(X) ((X)*180.0f/3.1415926f)
+
+//! Integer representation of a floating-point value.
+#define GIM_IR(x)					((GUINT&)(x))
+
+//! Signed integer representation of a floating-point value.
+#define GIM_SIR(x)					((GINT&)(x))
+
+//! Absolute integer representation of a floating-point value
+#define GIM_AIR(x)					(GIM_IR(x)&0x7fffffff)
+
+//! Floating-point representation of an integer value.
+#define GIM_FR(x)					((GREAL&)(x))
+
+#define GIM_MAX(a,b) (a<b?b:a)
+#define GIM_MIN(a,b) (a>b?b:a)
+
+#define GIM_MAX3(a,b,c) GIM_MAX(a,GIM_MAX(b,c))
+#define GIM_MIN3(a,b,c) GIM_MIN(a,GIM_MIN(b,c))
+
+#define GIM_IS_ZERO(value) (value < G_EPSILON &&  value > -G_EPSILON)
+
+#define GIM_IS_NEGATIVE(value) (value <= -G_EPSILON)
+
+#define GIM_IS_POSISITVE(value) (value >= G_EPSILON)
+
+#define GIM_NEAR_EQUAL(v1,v2) GIM_IS_ZERO((v1-v2))
+
+///returns a clamped number
+#define GIM_CLAMP(number,minval,maxval) (number<minval?minval:(number>maxval?maxval:number))
+
+#define GIM_GREATER(x, y)	fabsf(x) > (y)
+
+///Swap numbers
+#define GIM_SWAP_NUMBERS(a,b){ \
+    a = a+b; \
+    b = a-b; \
+    a = a-b; \
+}\
+
+#define GIM_INV_SQRT(va,isva)\
+{\
+    if(va<=0.0000001f)\
+    {\
+        isva = G_REAL_INFINITY;\
+    }\
+    else\
+    {\
+        GREAL _x = va * 0.5f;\
+        GUINT _y = 0x5f3759df - ( GIM_IR(va) >> 1);\
+        isva = GIM_FR(_y);\
+        isva  = isva * ( 1.5f - ( _x * isva * isva ) );\
+    }\
+}\
+
+#define GIM_SQRT(va,sva)\
+{\
+    GIM_INV_SQRT(va,sva);\
+    sva = 1.0f/sva;\
+}\
+
+//! Computes 1.0f / sqrtf(x). Comes from Quake3. See http://www.magic-software.com/3DGEDInvSqrt.html
+inline GREAL gim_inv_sqrt(GREAL f)
+{
+    GREAL r;
+    GIM_INV_SQRT(f,r);
+    return r;
+}
+
+inline GREAL gim_sqrt(GREAL f)
+{
+    GREAL r;
+    GIM_SQRT(f,r);
+    return r;
+}
+
+
+
+#endif // GIM_MATH_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_memory.cpp
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_memory.cpp	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_memory.cpp	(revision 2431)
@@ -0,0 +1,135 @@
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+
+#include "gim_memory.h"
+#include "stdlib.h"
+
+#ifdef GIM_SIMD_MEMORY
+#include "LinearMath/btAlignedAllocator.h"
+#endif
+
+static gim_alloc_function *g_allocfn = 0;
+static gim_alloca_function *g_allocafn = 0;
+static gim_realloc_function *g_reallocfn = 0;
+static gim_free_function *g_freefn = 0;
+
+void gim_set_alloc_handler (gim_alloc_function *fn)
+{
+  g_allocfn = fn;
+}
+
+void gim_set_alloca_handler (gim_alloca_function *fn)
+{
+  g_allocafn = fn;
+}
+
+void gim_set_realloc_handler (gim_realloc_function *fn)
+{
+  g_reallocfn = fn;
+}
+
+void gim_set_free_handler (gim_free_function *fn)
+{
+  g_freefn = fn;
+}
+
+gim_alloc_function *gim_get_alloc_handler()
+{
+  return g_allocfn;
+}
+
+gim_alloca_function *gim_get_alloca_handler()
+{
+  return g_allocafn;
+}
+
+
+gim_realloc_function *gim_get_realloc_handler ()
+{
+  return g_reallocfn;
+}
+
+
+gim_free_function  *gim_get_free_handler ()
+{
+  return g_freefn;
+}
+
+
+void * gim_alloc(size_t size)
+{
+	void * ptr;
+	if (g_allocfn)
+	{
+		ptr = g_allocfn(size);
+	}
+	else
+	{
+#ifdef GIM_SIMD_MEMORY
+		ptr = btAlignedAlloc(size,16);
+#else
+		ptr = malloc(size);
+#endif
+	}
+  	return ptr;
+}
+
+void * gim_alloca(size_t size)
+{
+  if (g_allocafn) return g_allocafn(size); else return gim_alloc(size);
+}
+
+
+void * gim_realloc(void *ptr, size_t oldsize, size_t newsize)
+{
+ 	void * newptr = gim_alloc(newsize);
+    size_t copysize = oldsize<newsize?oldsize:newsize;
+    gim_simd_memcpy(newptr,ptr,copysize);
+    gim_free(ptr);
+    return newptr;
+}
+
+void gim_free(void *ptr)
+{
+	if (!ptr) return;
+	if (g_freefn)
+	{
+	   g_freefn(ptr);
+	}
+	else
+	{
+	#ifdef GIM_SIMD_MEMORY
+		btAlignedFree(ptr);
+	#else
+		free(ptr);
+	#endif
+	}
+}
+
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_memory.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_memory.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_memory.h	(revision 2431)
@@ -0,0 +1,190 @@
+#ifndef GIM_MEMORY_H_INCLUDED
+#define GIM_MEMORY_H_INCLUDED
+/*! \file gim_memory.h
+\author Francisco Len Nßjera
+*/
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+
+#include "gim_math.h"
+#include <memory.h>
+
+#ifdef PREFETCH
+#include <xmmintrin.h>	// for prefetch
+#define pfval	64
+#define pfval2	128
+//! Prefetch 64
+#define pf(_x,_i)	_mm_prefetch((void *)(_x + _i + pfval), 0)
+//! Prefetch 128
+#define pf2(_x,_i)	_mm_prefetch((void *)(_x + _i + pfval2), 0)
+#else
+//! Prefetch 64
+#define pf(_x,_i)
+//! Prefetch 128
+#define pf2(_x,_i)
+#endif
+
+
+///Functions for manip packed arrays of numbers
+#define GIM_COPY_ARRAYS(dest_array,source_array,element_count)\
+{\
+    for (GUINT _i_=0;_i_<element_count ;++_i_)\
+    {\
+    	dest_array[_i_] = source_array[_i_];\
+    }\
+}\
+
+#define GIM_COPY_ARRAYS_1(dest_array,source_array,element_count,copy_macro)\
+{\
+    for (GUINT _i_=0;_i_<element_count ;++_i_)\
+    {\
+    	copy_macro(dest_array[_i_],source_array[_i_]);\
+    }\
+}\
+
+
+#define GIM_ZERO_ARRAY(array,element_count)\
+{\
+    for (GUINT _i_=0;_i_<element_count ;++_i_)\
+    {\
+    	array[_i_] = 0;\
+    }\
+}\
+
+#define GIM_CONSTANT_ARRAY(array,element_count,constant)\
+{\
+    for (GUINT _i_=0;_i_<element_count ;++_i_)\
+    {\
+    	array[_i_] = constant;\
+    }\
+}\
+
+
+///Function prototypes to allocate and free memory.
+typedef void * gim_alloc_function (size_t size);
+typedef void * gim_alloca_function (size_t size);//Allocs on the heap
+typedef void * gim_realloc_function (void *ptr, size_t oldsize, size_t newsize);
+typedef void gim_free_function (void *ptr);
+
+
+///Memory Function Handlers
+///set new memory management functions. if fn is 0, the default handlers are used.
+void gim_set_alloc_handler (gim_alloc_function *fn);
+void gim_set_alloca_handler (gim_alloca_function *fn);
+void gim_set_realloc_handler (gim_realloc_function *fn);
+void gim_set_free_handler (gim_free_function *fn);
+
+
+///get current memory management functions.
+gim_alloc_function *gim_get_alloc_handler (void);
+gim_alloca_function *gim_get_alloca_handler(void);
+gim_realloc_function *gim_get_realloc_handler (void);
+gim_free_function  *gim_get_free_handler (void);
+
+
+///Standar Memory functions
+void * gim_alloc(size_t size);
+void * gim_alloca(size_t size);
+void * gim_realloc(void *ptr, size_t oldsize, size_t newsize);
+void gim_free(void *ptr);
+
+
+
+#if defined (WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__)
+    #define GIM_SIMD_MEMORY 1
+#endif
+
+//! SIMD POINTER INTEGER
+#define SIMD_T GUINT64
+//! SIMD INTEGER SIZE
+#define SIMD_T_SIZE sizeof(SIMD_T)
+
+
+inline void gim_simd_memcpy(void * dst, const void * src, size_t copysize)
+{
+#ifdef GIM_SIMD_MEMORY
+/*
+//'long long int' is incompatible with visual studio 6...
+    //copy words
+    SIMD_T * ui_src_ptr = (SIMD_T *)src;
+    SIMD_T * ui_dst_ptr = (SIMD_T *)dst;
+    while(copysize>=SIMD_T_SIZE)
+    {
+        *(ui_dst_ptr++) = *(ui_src_ptr++);
+        copysize-=SIMD_T_SIZE;
+    }
+    if(copysize==0) return;
+*/
+
+    char * c_src_ptr = (char *)src;
+    char * c_dst_ptr = (char *)dst;
+    while(copysize>0)
+    {
+        *(c_dst_ptr++) = *(c_src_ptr++);
+        copysize--;
+    }
+    return;
+#else
+    memcpy(dst,src,copysize);
+#endif
+}
+
+
+
+template<class T>
+inline void gim_swap_elements(T* _array,size_t _i,size_t _j)
+{
+	T _e_tmp_ = _array[_i];
+	_array[_i] = _array[_j];
+	_array[_j] = _e_tmp_;
+}
+
+
+template<class T>
+inline void gim_swap_elements_memcpy(T* _array,size_t _i,size_t _j)
+{
+	char _e_tmp_[sizeof(T)];
+	gim_simd_memcpy(_e_tmp_,&_array[_i],sizeof(T));
+	gim_simd_memcpy(&_array[_i],&_array[_j],sizeof(T));
+	gim_simd_memcpy(&_array[_j],_e_tmp_,sizeof(T));
+}
+
+template <int SIZE>
+inline void gim_swap_elements_ptr(char * _array,size_t _i,size_t _j)
+{
+	char _e_tmp_[SIZE];
+	_i*=SIZE;
+	_j*=SIZE;
+	gim_simd_memcpy(_e_tmp_,_array+_i,SIZE);
+	gim_simd_memcpy(_array+_i,_array+_j,SIZE);
+	gim_simd_memcpy(_array+_j,_e_tmp_,SIZE);
+}
+
+#endif // GIM_MEMORY_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_radixsort.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_radixsort.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_radixsort.h	(revision 2431)
@@ -0,0 +1,406 @@
+#ifndef GIM_RADIXSORT_H_INCLUDED
+#define GIM_RADIXSORT_H_INCLUDED
+/*! \file gim_radixsort.h
+\author Francisco Len Nßjera.
+Based on the work of Michael Herf : "fast floating-point radix sort"
+Avaliable on http://www.stereopsis.com/radix.html
+*/
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+#include "gim_memory.h"
+
+///Macros for sorting.
+//! Prototype for comparators
+class less_comparator
+{
+	public:
+
+	template<class T,class Z>
+	inline int operator() ( const T& a, const Z& b )
+	{
+		return ( a<b?-1:(a>b?1:0));
+	}
+};
+
+//! Prototype for comparators
+class integer_comparator
+{
+	public:
+
+	template<class T>
+	inline int operator() ( const T& a, const T& b )
+	{
+		return (int)(a-b);
+	}
+};
+
+//!Prototype for getting the integer representation of an object
+class uint_key_func
+{
+public:
+	template<class T>
+	inline GUINT operator()( const T& a)
+	{
+		return (GUINT)a;
+	}
+};
+
+
+//!Prototype for copying elements
+class copy_elements_func
+{
+public:
+	template<class T>
+	inline void operator()(T& a,T& b)
+	{
+		a = b;
+	}
+};
+
+//!Prototype for copying elements
+class memcopy_elements_func
+{
+public:
+	template<class T>
+	inline void operator()(T& a,T& b)
+	{
+		gim_simd_memcpy(&a,&b,sizeof(T));
+	}
+};
+
+
+//! @{
+struct GIM_RSORT_TOKEN
+{
+    GUINT m_key;
+    GUINT m_value;
+    GIM_RSORT_TOKEN()
+    {
+    }
+    GIM_RSORT_TOKEN(const GIM_RSORT_TOKEN& rtoken)
+    {
+    	m_key = rtoken.m_key;
+    	m_value = rtoken.m_value;
+    }
+
+    inline bool operator <(const GIM_RSORT_TOKEN& other) const
+	{
+		return (m_key < other.m_key);
+	}
+
+	inline bool operator >(const GIM_RSORT_TOKEN& other) const
+	{
+		return (m_key > other.m_key);
+	}
+};
+
+//! Prototype for comparators
+class GIM_RSORT_TOKEN_COMPARATOR
+{
+	public:
+
+	inline int operator()( const GIM_RSORT_TOKEN& a, const GIM_RSORT_TOKEN& b )
+	{
+		return (int)((a.m_key) - (b.m_key));
+	}
+};
+
+
+
+#define kHist 2048
+// ---- utils for accessing 11-bit quantities
+#define D11_0(x)	(x & 0x7FF)
+#define D11_1(x)	(x >> 11 & 0x7FF)
+#define D11_2(x)	(x >> 22 )
+
+
+
+///Radix sort for unsigned integer keys
+inline void gim_radix_sort_rtokens(
+				GIM_RSORT_TOKEN * array,
+				GIM_RSORT_TOKEN * sorted, GUINT element_count)
+{
+	GUINT i;
+	GUINT b0[kHist * 3];
+	GUINT *b1 = b0 + kHist;
+	GUINT *b2 = b1 + kHist;
+	for (i = 0; i < kHist * 3; ++i)
+	{
+		b0[i] = 0;
+	}
+	GUINT fi;
+	GUINT pos;
+	for (i = 0; i < element_count; ++i)
+	{
+	    fi = array[i].m_key;
+		b0[D11_0(fi)] ++;
+		b1[D11_1(fi)] ++;
+		b2[D11_2(fi)] ++;
+	}
+	{
+		GUINT sum0 = 0, sum1 = 0, sum2 = 0;
+		GUINT tsum;
+		for (i = 0; i < kHist; ++i)
+		{
+			tsum = b0[i] + sum0;
+			b0[i] = sum0 - 1;
+			sum0 = tsum;
+			tsum = b1[i] + sum1;
+			b1[i] = sum1 - 1;
+			sum1 = tsum;
+			tsum = b2[i] + sum2;
+			b2[i] = sum2 - 1;
+			sum2 = tsum;
+		}
+	}
+	for (i = 0; i < element_count; ++i)
+	{
+        fi = array[i].m_key;
+		pos = D11_0(fi);
+		pos = ++b0[pos];
+		sorted[pos].m_key = array[i].m_key;
+		sorted[pos].m_value = array[i].m_value;
+	}
+	for (i = 0; i < element_count; ++i)
+	{
+        fi = sorted[i].m_key;
+		pos = D11_1(fi);
+		pos = ++b1[pos];
+		array[pos].m_key = sorted[i].m_key;
+		array[pos].m_value = sorted[i].m_value;
+	}
+	for (i = 0; i < element_count; ++i)
+	{
+        fi = array[i].m_key;
+		pos = D11_2(fi);
+		pos = ++b2[pos];
+		sorted[pos].m_key = array[i].m_key;
+		sorted[pos].m_value = array[i].m_value;
+	}
+}
+
+
+
+
+/// Get the sorted tokens from an array. For generic use. Tokens are IRR_RSORT_TOKEN
+/*!
+*\param array Array of elements to sort
+*\param sorted_tokens Tokens of sorted elements
+*\param element_count element count
+*\param uintkey_macro Functor which retrieves the integer representation of an array element
+*/
+template<typename T, class GETKEY_CLASS>
+void gim_radix_sort_array_tokens(
+			T* array ,
+			GIM_RSORT_TOKEN * sorted_tokens,
+			GUINT element_count,GETKEY_CLASS uintkey_macro)
+{
+	GIM_RSORT_TOKEN * _unsorted = (GIM_RSORT_TOKEN *) gim_alloc(sizeof(GIM_RSORT_TOKEN)*element_count);
+    for (GUINT _i=0;_i<element_count;++_i)
+    {
+        _unsorted[_i].m_key = uintkey_macro(array[_i]);
+        _unsorted[_i].m_value = _i;
+    }
+    gim_radix_sort_rtokens(_unsorted,sorted_tokens,element_count);
+    gim_free(_unsorted);
+    gim_free(_unsorted);
+}
+
+/// Sorts array in place. For generic use
+/*!
+\param type Type of the array
+\param array
+\param element_count
+\param get_uintkey_macro Macro for extract the Integer value of the element. Similar to SIMPLE_GET_UINTKEY
+\param copy_elements_macro Macro for copy elements, similar to SIMPLE_COPY_ELEMENTS
+*/
+template<typename T, class GETKEY_CLASS, class COPY_CLASS>
+void gim_radix_sort(
+	T * array, GUINT element_count,
+	GETKEY_CLASS get_uintkey_macro, COPY_CLASS copy_elements_macro)
+{
+	GIM_RSORT_TOKEN * _sorted = (GIM_RSORT_TOKEN  *) gim_alloc(sizeof(GIM_RSORT_TOKEN)*element_count);
+    gim_radix_sort_array_tokens(array,_sorted,element_count,get_uintkey_macro);
+    T * _original_array = (T *) gim_alloc(sizeof(T)*element_count);
+    gim_simd_memcpy(_original_array,array,sizeof(T)*element_count);
+    for (GUINT _i=0;_i<element_count;++_i)
+    {
+        copy_elements_macro(array[_i],_original_array[_sorted[_i].m_value]);
+    }
+    gim_free(_original_array);
+    gim_free(_sorted);
+}
+
+//! Failsafe Iterative binary search,
+/*!
+If the element is not found, it returns the nearest upper element position, may be the further position after the last element.
+\param _array
+\param _start_i the beginning of the array
+\param _end_i the ending  index of the array
+\param _search_key Value to find
+\param _comp_macro macro for comparing elements
+\param _found If true the value has found. Boolean
+\param _result_index the index of the found element, or if not found then it will get the index of the  closest bigger value
+*/
+template<class T, typename KEYCLASS, typename COMP_CLASS>
+bool  gim_binary_search_ex(
+		const T* _array, GUINT _start_i,
+		GUINT _end_i,GUINT & _result_index,
+		const KEYCLASS & _search_key,
+		COMP_CLASS _comp_macro)
+{
+	GUINT _k;
+	int _comp_result;
+	GUINT _i = _start_i;
+	GUINT _j = _end_i+1;
+	while (_i < _j)
+	{
+		_k = (_j+_i-1)/2;
+		_comp_result = _comp_macro(_array[_k], _search_key);
+		if (_comp_result == 0)
+		{
+			_result_index = _k;
+			return true;
+		}
+		else if (_comp_result < 0)
+		{
+			_i = _k+1;
+		}
+		else
+		{
+			_j = _k;
+		}
+	}
+	_result_index = _i;
+	return false;
+}
+
+
+
+//! Failsafe Iterative binary search,Template version
+/*!
+If the element is not found, it returns the nearest upper element position, may be the further position after the last element.
+\param _array
+\param _start_i the beginning of the array
+\param _end_i the ending  index of the array
+\param _search_key Value to find
+\param _result_index the index of the found element, or if not found then it will get the index of the  closest bigger value
+\return true if found, else false
+*/
+template<class T>
+bool gim_binary_search(
+	const T*_array,GUINT _start_i,
+	GUINT _end_i,const T & _search_key,
+	GUINT & _result_index)
+{
+	GUINT _i = _start_i;
+	GUINT _j = _end_i+1;
+	GUINT _k;
+	while(_i < _j)
+	{
+		_k = (_j+_i-1)/2;
+		if(_array[_k]==_search_key)
+		{
+			_result_index = _k;
+			return true;
+		}
+		else if (_array[_k]<_search_key)
+		{
+			_i = _k+1;
+		}
+		else
+		{
+			_j = _k;
+		}
+	}
+	_result_index = _i;
+	return false;
+}
+
+
+
+///heap sort from http://www.csse.monash.edu.au/~lloyd/tildeAlgDS/Sort/Heap/
+template <typename T, typename COMP_CLASS>
+void gim_down_heap(T *pArr, GUINT k, GUINT n,COMP_CLASS CompareFunc)
+{
+	/*  PRE: a[k+1..N] is a heap */
+	/* POST:  a[k..N]  is a heap */
+
+	T temp = pArr[k - 1];
+	/* k has child(s) */
+	while (k <= n/2)
+	{
+		int child = 2*k;
+
+		if ((child < (int)n) && CompareFunc(pArr[child - 1] , pArr[child])<0)
+		{
+			child++;
+		}
+		/* pick larger child */
+		if (CompareFunc(temp , pArr[child - 1])<0)
+		{
+			/* move child up */
+			pArr[k - 1] = pArr[child - 1];
+			k = child;
+		}
+		else
+		{
+			break;
+		}
+	}
+	pArr[k - 1] = temp;
+} /*downHeap*/
+
+
+template <typename T, typename COMP_CLASS>
+void gim_heap_sort(T *pArr, GUINT element_count, COMP_CLASS CompareFunc)
+{
+	/* sort a[0..N-1],  N.B. 0 to N-1 */
+	GUINT k;
+	GUINT n = element_count;
+	for (k = n/2; k > 0; k--)
+	{
+		gim_down_heap(pArr, k, n, CompareFunc);
+	}
+
+	/* a[1..N] is now a heap */
+	while ( n>=2 )
+	{
+		gim_swap_elements(pArr,0,n-1); /* largest of a[0..n-1] */
+		--n;
+		/* restore a[1..i-1] heap */
+		gim_down_heap(pArr, 1, n, CompareFunc);
+	}
+}
+
+
+
+
+#endif // GIM_RADIXSORT_H_INCLUDED
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_tri_collision.cpp
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_tri_collision.cpp	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_tri_collision.cpp	(revision 2431)
@@ -0,0 +1,640 @@
+
+/*! \file gim_tri_collision.h
+\author Francisco Len Nßjera
+*/
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+#include "gim_tri_collision.h"
+
+
+#define TRI_LOCAL_EPSILON 0.000001f
+#define MIN_EDGE_EDGE_DIS 0.00001f
+
+
+class GIM_TRIANGLE_CALCULATION_CACHE
+{
+public:
+	GREAL margin;	
+	btVector3 tu_vertices[3];
+	btVector3 tv_vertices[3];
+	btVector4 tu_plane;
+	btVector4 tv_plane;
+	btVector3 closest_point_u;
+	btVector3 closest_point_v;
+	btVector3 edge_edge_dir;
+	btVector3 distances;
+	GREAL du[4];
+	GREAL du0du1;
+	GREAL du0du2;
+	GREAL dv[4];
+	GREAL dv0dv1;
+	GREAL dv0dv2;	
+	btVector3 temp_points[MAX_TRI_CLIPPING];
+	btVector3 temp_points1[MAX_TRI_CLIPPING];
+	btVector3 contact_points[MAX_TRI_CLIPPING];
+	
+
+
+	//! if returns false, the faces are paralele
+	SIMD_FORCE_INLINE bool compute_intervals(
+					const GREAL &D0,
+					const GREAL &D1,
+					const GREAL &D2,
+					const GREAL &D0D1,
+					const GREAL &D0D2,
+					GREAL & scale_edge0,
+					GREAL & scale_edge1,
+					GUINT &edge_index0,
+					GUINT &edge_index1)
+	{
+		if(D0D1>0.0f)
+		{
+			/* here we know that D0D2<=0.0 */
+			/* that is D0, D1 are on the same side, D2 on the other or on the plane */
+			scale_edge0 = -D2/(D0-D2);
+			scale_edge1 = -D1/(D2-D1);
+			edge_index0 = 2;edge_index1 = 1;
+		}
+		else if(D0D2>0.0f)
+		{
+			/* here we know that d0d1<=0.0 */
+			scale_edge0 = -D0/(D1-D0);
+			scale_edge1 = -D1/(D2-D1);
+			edge_index0 = 0;edge_index1 = 1;
+		}
+		else if(D1*D2>0.0f || D0!=0.0f)
+		{
+			/* here we know that d0d1<=0.0 or that D0!=0.0 */
+			scale_edge0 = -D0/(D1-D0);
+			scale_edge1 = -D2/(D0-D2);
+			edge_index0 = 0 ;edge_index1 = 2;
+		}
+		else
+		{
+			return false;
+		}
+		return true;
+	}
+
+
+	//! clip triangle
+	/*!
+	*/
+	SIMD_FORCE_INLINE GUINT clip_triangle(
+		const btVector4 & tri_plane,
+		const btVector3 * tripoints,
+		const btVector3 * srcpoints,
+		btVector3 * clip_points)
+	{
+		// edge 0
+
+		btVector4 edgeplane;
+
+		EDGE_PLANE(tripoints[0],tripoints[1],tri_plane,edgeplane);
+
+		GUINT clipped_count = PLANE_CLIP_TRIANGLE3D(
+			edgeplane,srcpoints[0],srcpoints[1],srcpoints[2],temp_points);
+
+		if(clipped_count == 0) return 0;
+
+		// edge 1
+
+		EDGE_PLANE(tripoints[1],tripoints[2],tri_plane,edgeplane);
+
+		clipped_count = PLANE_CLIP_POLYGON3D(
+			edgeplane,temp_points,clipped_count,temp_points1);
+
+		if(clipped_count == 0) return 0;
+
+		// edge 2
+
+		EDGE_PLANE(tripoints[2],tripoints[0],tri_plane,edgeplane);
+
+		clipped_count = PLANE_CLIP_POLYGON3D(
+			edgeplane,temp_points1,clipped_count,clip_points);
+
+		return clipped_count;
+
+
+		/*GUINT i0 = (tri_plane.closestAxis()+1)%3;
+		GUINT i1 = (i0+1)%3;
+		// edge 0
+		btVector3 temp_points[MAX_TRI_CLIPPING];
+		btVector3 temp_points1[MAX_TRI_CLIPPING];
+
+		GUINT clipped_count= PLANE_CLIP_TRIANGLE_GENERIC(
+			0,srcpoints[0],srcpoints[1],srcpoints[2],temp_points,
+			DISTANCE_EDGE(tripoints[0],tripoints[1],i0,i1));
+		
+		
+		if(clipped_count == 0) return 0;
+
+		// edge 1
+		clipped_count = PLANE_CLIP_POLYGON_GENERIC(
+			0,temp_points,clipped_count,temp_points1,
+			DISTANCE_EDGE(tripoints[1],tripoints[2],i0,i1));
+
+		if(clipped_count == 0) return 0;
+
+		// edge 2
+		clipped_count = PLANE_CLIP_POLYGON_GENERIC(
+			0,temp_points1,clipped_count,clipped_points,
+			DISTANCE_EDGE(tripoints[2],tripoints[0],i0,i1));
+
+		return clipped_count;*/
+	}
+
+	SIMD_FORCE_INLINE void sort_isect(
+		GREAL & isect0,GREAL & isect1,GUINT &e0,GUINT &e1,btVector3 & vec0,btVector3 & vec1)
+	{
+		if(isect1<isect0)
+		{
+			//swap
+			GIM_SWAP_NUMBERS(isect0,isect1);
+			GIM_SWAP_NUMBERS(e0,e1);
+			btVector3 tmp = vec0;
+			vec0 = vec1;
+			vec1 = tmp;
+		}
+	}
+
+	//! Test verifying interval intersection with the direction between planes
+	/*!
+	\pre tv_plane and tu_plane must be set
+	\post
+	distances[2] is set with the distance
+	closest_point_u, closest_point_v, edge_edge_dir are set too
+	\return
+	- 0: faces are paralele
+	- 1: face U casts face V
+	- 2: face V casts face U
+	- 3: nearest edges
+	*/
+	SIMD_FORCE_INLINE GUINT cross_line_intersection_test()
+	{
+		// Compute direction of intersection line
+		edge_edge_dir = tu_plane.cross(tv_plane);
+		GREAL Dlen;
+		VEC_LENGTH(edge_edge_dir,Dlen);
+
+		if(Dlen<0.0001)
+		{
+			return 0; //faces near paralele
+		}
+
+		edge_edge_dir*= 1/Dlen;//normalize
+
+
+		// Compute interval for triangle 1
+		GUINT tu_e0,tu_e1;//edge indices
+		GREAL tu_scale_e0,tu_scale_e1;//edge scale
+		if(!compute_intervals(du[0],du[1],du[2],
+			du0du1,du0du2,tu_scale_e0,tu_scale_e1,tu_e0,tu_e1)) return 0;
+
+		// Compute interval for triangle 2
+		GUINT tv_e0,tv_e1;//edge indices
+		GREAL tv_scale_e0,tv_scale_e1;//edge scale
+
+		if(!compute_intervals(dv[0],dv[1],dv[2],
+			dv0dv1,dv0dv2,tv_scale_e0,tv_scale_e1,tv_e0,tv_e1)) return 0;
+
+		//proyected vertices
+		btVector3 up_e0 = tu_vertices[tu_e0].lerp(tu_vertices[(tu_e0+1)%3],tu_scale_e0);
+		btVector3 up_e1 = tu_vertices[tu_e1].lerp(tu_vertices[(tu_e1+1)%3],tu_scale_e1);
+
+		btVector3 vp_e0 = tv_vertices[tv_e0].lerp(tv_vertices[(tv_e0+1)%3],tv_scale_e0);
+		btVector3 vp_e1 = tv_vertices[tv_e1].lerp(tv_vertices[(tv_e1+1)%3],tv_scale_e1);
+
+		//proyected intervals
+		GREAL isect_u[] = {up_e0.dot(edge_edge_dir),up_e1.dot(edge_edge_dir)};
+		GREAL isect_v[] = {vp_e0.dot(edge_edge_dir),vp_e1.dot(edge_edge_dir)};
+
+		sort_isect(isect_u[0],isect_u[1],tu_e0,tu_e1,up_e0,up_e1);
+		sort_isect(isect_v[0],isect_v[1],tv_e0,tv_e1,vp_e0,vp_e1);
+
+		const GREAL midpoint_u = 0.5f*(isect_u[0]+isect_u[1]); // midpoint
+		const GREAL midpoint_v = 0.5f*(isect_v[0]+isect_v[1]); // midpoint
+
+		if(midpoint_u<midpoint_v)
+		{
+			if(isect_u[1]>=isect_v[1]) // face U casts face V
+			{
+				return 1;
+			}
+			else if(isect_v[0]<=isect_u[0]) // face V casts face U
+			{
+				return 2;
+			}
+			// closest points
+			closest_point_u = up_e1;
+			closest_point_v = vp_e0;
+			// calc edges and separation
+
+			if(isect_u[1]+ MIN_EDGE_EDGE_DIS<isect_v[0]) //calc distance between two lines instead
+			{
+				SEGMENT_COLLISION(
+					tu_vertices[tu_e1],tu_vertices[(tu_e1+1)%3],
+					tv_vertices[tv_e0],tv_vertices[(tv_e0+1)%3],
+					closest_point_u,
+					closest_point_v);
+
+				edge_edge_dir = closest_point_u-closest_point_v;
+				VEC_LENGTH(edge_edge_dir,distances[2]);
+				edge_edge_dir *= 1.0f/distances[2];// normalize
+			}
+			else
+			{
+				distances[2] = isect_v[0]-isect_u[1];//distance negative
+				//edge_edge_dir *= -1.0f; //normal pointing from V to U
+			}
+
+		}
+		else
+		{
+			if(isect_v[1]>=isect_u[1]) // face V casts face U
+			{
+				return 2;
+			}
+			else if(isect_u[0]<=isect_v[0]) // face U casts face V
+			{
+				return 1;
+			}
+			// closest points
+			closest_point_u = up_e0;
+			closest_point_v = vp_e1;
+			// calc edges and separation
+
+			if(isect_v[1]+MIN_EDGE_EDGE_DIS<isect_u[0]) //calc distance between two lines instead
+			{
+				SEGMENT_COLLISION(
+					tu_vertices[tu_e0],tu_vertices[(tu_e0+1)%3],
+					tv_vertices[tv_e1],tv_vertices[(tv_e1+1)%3],
+					closest_point_u,
+					closest_point_v);
+
+				edge_edge_dir = closest_point_u-closest_point_v;
+				VEC_LENGTH(edge_edge_dir,distances[2]);
+				edge_edge_dir *= 1.0f/distances[2];// normalize
+			}
+			else
+			{
+				distances[2] = isect_u[0]-isect_v[1];//distance negative
+				//edge_edge_dir *= -1.0f; //normal pointing from V to U
+			}
+		}
+		return 3;
+	}
+
+
+	//! collides by two sides
+	SIMD_FORCE_INLINE bool triangle_collision(
+					const btVector3 & u0,
+					const btVector3 & u1,
+					const btVector3 & u2,
+					GREAL margin_u,
+					const btVector3 & v0,
+					const btVector3 & v1,
+					const btVector3 & v2,
+					GREAL margin_v,
+					GIM_TRIANGLE_CONTACT_DATA & contacts)
+	{
+
+		margin = margin_u + margin_v;
+
+		tu_vertices[0] = u0;
+		tu_vertices[1] = u1;
+		tu_vertices[2] = u2;
+
+		tv_vertices[0] = v0;
+		tv_vertices[1] = v1;
+		tv_vertices[2] = v2;
+
+		//create planes
+		// plane v vs U points
+
+		TRIANGLE_PLANE(tv_vertices[0],tv_vertices[1],tv_vertices[2],tv_plane);
+
+		du[0] = DISTANCE_PLANE_POINT(tv_plane,tu_vertices[0]);
+		du[1] = DISTANCE_PLANE_POINT(tv_plane,tu_vertices[1]);
+		du[2] = DISTANCE_PLANE_POINT(tv_plane,tu_vertices[2]);
+
+
+		du0du1 = du[0] * du[1];
+		du0du2 = du[0] * du[2];
+
+
+		if(du0du1>0.0f && du0du2>0.0f)	// same sign on all of them + not equal 0 ?
+		{
+			if(du[0]<0) //we need test behind the triangle plane
+			{
+				distances[0] = GIM_MAX3(du[0],du[1],du[2]);
+				distances[0] = -distances[0];
+				if(distances[0]>margin) return false; //never intersect
+
+				//reorder triangle v
+				VEC_SWAP(tv_vertices[0],tv_vertices[1]);
+				VEC_SCALE_4(tv_plane,-1.0f,tv_plane);
+			}
+			else
+			{
+				distances[0] = GIM_MIN3(du[0],du[1],du[2]);
+				if(distances[0]>margin) return false; //never intersect
+			}
+		}
+		else
+		{
+			//Look if we need to invert the triangle
+			distances[0] = (du[0]+du[1]+du[2])/3.0f; //centroid
+
+			if(distances[0]<0.0f)
+			{
+				//reorder triangle v
+				VEC_SWAP(tv_vertices[0],tv_vertices[1]);
+				VEC_SCALE_4(tv_plane,-1.0f,tv_plane);
+
+				distances[0] = GIM_MAX3(du[0],du[1],du[2]);
+				distances[0] = -distances[0];
+			}
+			else
+			{
+				distances[0] = GIM_MIN3(du[0],du[1],du[2]);
+			}
+		}
+
+
+		// plane U vs V points
+
+		TRIANGLE_PLANE(tu_vertices[0],tu_vertices[1],tu_vertices[2],tu_plane);
+
+		dv[0] = DISTANCE_PLANE_POINT(tu_plane,tv_vertices[0]);
+		dv[1] = DISTANCE_PLANE_POINT(tu_plane,tv_vertices[1]);
+		dv[2] = DISTANCE_PLANE_POINT(tu_plane,tv_vertices[2]);
+
+		dv0dv1 = dv[0] * dv[1];
+		dv0dv2 = dv[0] * dv[2];
+
+
+		if(dv0dv1>0.0f && dv0dv2>0.0f)	// same sign on all of them + not equal 0 ?
+		{
+			if(dv[0]<0) //we need test behind the triangle plane
+			{
+				distances[1] = GIM_MAX3(dv[0],dv[1],dv[2]);
+				distances[1] = -distances[1];
+				if(distances[1]>margin) return false; //never intersect
+
+				//reorder triangle u
+				VEC_SWAP(tu_vertices[0],tu_vertices[1]);
+				VEC_SCALE_4(tu_plane,-1.0f,tu_plane);
+			}
+			else
+			{
+				distances[1] = GIM_MIN3(dv[0],dv[1],dv[2]);
+				if(distances[1]>margin) return false; //never intersect
+			}
+		}
+		else
+		{
+			//Look if we need to invert the triangle
+			distances[1] = (dv[0]+dv[1]+dv[2])/3.0f; //centroid
+
+			if(distances[1]<0.0f)
+			{
+				//reorder triangle v
+				VEC_SWAP(tu_vertices[0],tu_vertices[1]);
+				VEC_SCALE_4(tu_plane,-1.0f,tu_plane);
+
+				distances[1] = GIM_MAX3(dv[0],dv[1],dv[2]);
+				distances[1] = -distances[1];
+			}
+			else
+			{
+				distances[1] = GIM_MIN3(dv[0],dv[1],dv[2]);
+			}
+		}
+
+		GUINT bl;
+		/* bl = cross_line_intersection_test();
+		if(bl==3)
+		{
+			//take edge direction too
+			bl = distances.maxAxis();
+		}
+		else
+		{*/
+			bl = 0;
+			if(distances[0]<distances[1]) bl = 1;
+		//}
+
+		if(bl==2) //edge edge separation
+		{
+			if(distances[2]>margin) return false;
+
+			contacts.m_penetration_depth = -distances[2] + margin;
+			contacts.m_points[0] = closest_point_v;
+			contacts.m_point_count = 1;
+			VEC_COPY(contacts.m_separating_normal,edge_edge_dir);
+
+			return true;
+		}
+
+		//clip face against other
+
+		
+		GUINT point_count;
+		//TODO
+		if(bl == 0) //clip U points against V
+		{
+			point_count = clip_triangle(tv_plane,tv_vertices,tu_vertices,contact_points);
+			if(point_count == 0) return false;						
+			contacts.merge_points(tv_plane,margin,contact_points,point_count);			
+		}
+		else //clip V points against U
+		{
+			point_count = clip_triangle(tu_plane,tu_vertices,tv_vertices,contact_points);
+			if(point_count == 0) return false;			
+			contacts.merge_points(tu_plane,margin,contact_points,point_count);
+			contacts.m_separating_normal *= -1.f;
+		}
+		if(contacts.m_point_count == 0) return false;
+		return true;
+	}
+
+};
+
+
+/*class GIM_TRIANGLE_CALCULATION_CACHE
+{
+public:
+	GREAL margin;
+	GUINT clipped_count;
+	btVector3 tu_vertices[3];
+	btVector3 tv_vertices[3];
+	btVector3 temp_points[MAX_TRI_CLIPPING];
+	btVector3 temp_points1[MAX_TRI_CLIPPING];
+	btVector3 clipped_points[MAX_TRI_CLIPPING];
+	GIM_TRIANGLE_CONTACT_DATA contacts1;
+	GIM_TRIANGLE_CONTACT_DATA contacts2;
+
+
+	//! clip triangle
+	GUINT clip_triangle(
+		const btVector4 & tri_plane,
+		const btVector3 * tripoints,
+		const btVector3 * srcpoints,
+		btVector3 * clipped_points)
+	{
+		// edge 0
+
+		btVector4 edgeplane;
+
+		EDGE_PLANE(tripoints[0],tripoints[1],tri_plane,edgeplane);
+
+		GUINT clipped_count = PLANE_CLIP_TRIANGLE3D(
+			edgeplane,srcpoints[0],srcpoints[1],srcpoints[2],temp_points);
+
+		if(clipped_count == 0) return 0;
+
+		// edge 1
+
+		EDGE_PLANE(tripoints[1],tripoints[2],tri_plane,edgeplane);
+
+		clipped_count = PLANE_CLIP_POLYGON3D(
+			edgeplane,temp_points,clipped_count,temp_points1);
+
+		if(clipped_count == 0) return 0;
+
+		// edge 2
+
+		EDGE_PLANE(tripoints[2],tripoints[0],tri_plane,edgeplane);
+
+		clipped_count = PLANE_CLIP_POLYGON3D(
+			edgeplane,temp_points1,clipped_count,clipped_points);
+
+		return clipped_count;
+	}
+
+
+
+
+	//! collides only on one side
+	bool triangle_collision(
+					const btVector3 & u0,
+					const btVector3 & u1,
+					const btVector3 & u2,
+					GREAL margin_u,
+					const btVector3 & v0,
+					const btVector3 & v1,
+					const btVector3 & v2,
+					GREAL margin_v,
+					GIM_TRIANGLE_CONTACT_DATA & contacts)
+	{
+
+		margin = margin_u + margin_v;
+
+		
+		tu_vertices[0] = u0;
+		tu_vertices[1] = u1;
+		tu_vertices[2] = u2;
+
+		tv_vertices[0] = v0;
+		tv_vertices[1] = v1;
+		tv_vertices[2] = v2;
+
+		//create planes
+		// plane v vs U points
+
+
+		TRIANGLE_PLANE(tv_vertices[0],tv_vertices[1],tv_vertices[2],contacts1.m_separating_normal);
+
+		clipped_count = clip_triangle(
+			contacts1.m_separating_normal,tv_vertices,tu_vertices,clipped_points);
+
+		if(clipped_count == 0 )
+		{
+			 return false;//Reject
+		}
+
+		//find most deep interval face1
+		contacts1.merge_points(contacts1.m_separating_normal,margin,clipped_points,clipped_count);
+		if(contacts1.m_point_count == 0) return false; // too far
+
+		//Normal pointing to triangle1
+		//contacts1.m_separating_normal *= -1.f;
+
+		//Clip tri1 by tri2 edges
+
+		TRIANGLE_PLANE(tu_vertices[0],tu_vertices[1],tu_vertices[2],contacts2.m_separating_normal);
+
+		clipped_count = clip_triangle(
+			contacts2.m_separating_normal,tu_vertices,tv_vertices,clipped_points);
+
+		if(clipped_count == 0 )
+		{
+			 return false;//Reject
+		}
+
+		//find most deep interval face1
+		contacts2.merge_points(contacts2.m_separating_normal,margin,clipped_points,clipped_count);
+		if(contacts2.m_point_count == 0) return false; // too far
+
+		contacts2.m_separating_normal *= -1.f;
+
+		////check most dir for contacts
+		if(contacts2.m_penetration_depth<contacts1.m_penetration_depth)
+		{
+			contacts.copy_from(contacts2);
+		}
+		else
+		{
+			contacts.copy_from(contacts1);
+		}
+		return true;
+	}
+
+
+};*/
+
+
+
+bool GIM_TRIANGLE::collide_triangle_hard_test(
+		const GIM_TRIANGLE & other,
+		GIM_TRIANGLE_CONTACT_DATA & contact_data) const
+{
+	GIM_TRIANGLE_CALCULATION_CACHE calc_cache;	
+	return calc_cache.triangle_collision(
+					m_vertices[0],m_vertices[1],m_vertices[2],m_margin,
+					other.m_vertices[0],other.m_vertices[1],other.m_vertices[2],other.m_margin,
+					contact_data);
+
+}
+
+
+
+
Index: /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_tri_collision.h
===================================================================
--- /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_tri_collision.h	(revision 2431)
+++ /code/branches/physics/src/bullet/BulletCollision/Gimpact/gim_tri_collision.h	(revision 2431)
@@ -0,0 +1,379 @@
+#ifndef GIM_TRI_COLLISION_H_INCLUDED
+#define GIM_TRI_COLLISION_H_INCLUDED
+
+/*! \file gim_tri_collision.h
+\author Francisco Len Nßjera
+*/
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+   (1) The GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 2.1 of the License, or (at
+       your option) any later version. The text of the GNU Lesser
+       General Public License is included with this library in the
+       file GIMPACT-LICENSE-LGPL.TXT.
+   (2) The BSD-style license that is included with this library in
+       the file GIMPACT-LICENSE-BSD.TXT.
+   (3) The zlib/libpng license that is included with this library in
+       the file GIMPACT-LICENSE-ZLIB.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+#include "gim_box_collision.h"
+#include "gim_clip_polygon.h"
+
+
+
+
+#define MAX_TRI_CLIPPING 16
+
+//! Structure for collision
+struct GIM_TRIANGLE_CONTACT_DATA
+{
+    GREAL m_penetration_depth;
+    GUINT m_point_count;
+    btVector4 m_separating_normal;
+    btVector3 m_points[MAX_TRI_CLIPPING];
+
+	SIMD_FORCE_INLINE void copy_from(const GIM_TRIANGLE_CONTACT_DATA& other)
+	{
+		m_penetration_depth = other.m_penetration_depth;
+		m_separating_normal = other.m_separating_normal;
+		m_point_count = other.m_point_count;
+		GUINT i = m_point_count;
+		while(i--)
+		{
+			m_points[i] = other.m_points[i];
+		}
+	}
+
+	GIM_TRIANGLE_CONTACT_DATA()
+	{
+	}
+
+	GIM_TRIANGLE_CONTACT_DATA(const GIM_TRIANGLE_CONTACT_DATA& other)
+	{
+		copy_from(other);
+	}
+
+	
+	
+
+    //! classify points that are closer
+    template<typename DISTANCE_FUNC,typename CLASS_PLANE>
+    SIMD_FORCE_INLINE void mergepoints_generic(const CLASS_PLANE & plane,
+    				GREAL margin, const btVector3 * points, GUINT point_count, DISTANCE_FUNC distance_func)
+    {	
+    	m_point_count = 0;
+    	m_penetration_depth= -1000.0f;
+
+		GUINT point_indices[MAX_TRI_CLIPPING];
+
+		GUINT _k;
+
+		for(_k=0;_k<point_count;_k++)
+		{
+			GREAL _dist = -distance_func(plane,points[_k]) + margin;
+
+			if(_dist>=0.0f)
+			{
+				if(_dist>m_penetration_depth)
+				{
+					m_penetration_depth = _dist;
+					point_indices[0] = _k;
+					m_point_count=1;
+				}
+				else if((_dist+G_EPSILON)>=m_penetration_depth)
+				{
+					point_indices[m_point_count] = _k;
+					m_point_count++;
+				}
+			}
+		}
+
+		for( _k=0;_k<m_point_count;_k++)
+		{
+			m_points[_k] = points[point_indices[_k]];
+		}
+	}
+
+	//! classify points that are closer
+	SIMD_FORCE_INLINE void merge_points(const btVector4 & plane, GREAL margin,
+										 const btVector3 * points, GUINT point_count)
+	{
+		m_separating_normal = plane;
+		mergepoints_generic(plane, margin, points, point_count, DISTANCE_PLANE_3D_FUNC());
+	}
+};
+
+
+//! Class for colliding triangles
+class GIM_TRIANGLE
+{
+public:
+	btScalar m_margin;
+    btVector3 m_vertices[3];
+
+    GIM_TRIANGLE():m_margin(0.1f)
+    {
+    }
+
+    SIMD_FORCE_INLINE GIM_AABB get_box()  const
+    {
+    	return GIM_AABB(m_vertices[0],m_vertices[1],m_vertices[2],m_margin);
+    }
+
+    SIMD_FORCE_INLINE void get_normal(btVector3 &normal)  const
+    {
+    	TRIANGLE_NORMAL(m_vertices[0],m_vertices[1],m_vertices[2],normal);
+    }
+
+    SIMD_FORCE_INLINE void get_plane(btVector4 &plane)  const
+    {
+    	TRIANGLE_PLANE(m_vertices[0],m_vertices[1],m_vertices[2],plane);;
+    }
+
+    SIMD_FORCE_INLINE void apply_transform(const btTransform & trans)
+    {
+    	m_vertices[0] = trans(m_vertices[0]);
+    	m_vertices[1] = trans(m_vertices[1]);
+    	m_vertices[2] = trans(m_vertices[2]);
+    }
+
+    SIMD_FORCE_INLINE void get_edge_plane(GUINT edge_index,const btVector3 &triangle_normal,btVector4 &plane)  const
+    {
+		const btVector3 & e0 = m_vertices[edge_index];
+		const btVector3 & e1 = m_vertices[(edge_index+1)%3];
+		EDGE_PLANE(e0,e1,triangle_normal,plane);
+    }
+
+    //! Gets the relative transformation of this triangle
+    /*!
+    The transformation is oriented to the triangle normal , and aligned to the 1st edge of this triangle. The position corresponds to vertice 0:
+    - triangle normal corresponds to Z axis.
+    - 1st normalized edge corresponds to X axis,
+
+    */
+    SIMD_FORCE_INLINE void get_triangle_transform(btTransform & triangle_transform)  const
+    {
+    	btMatrix3x3 & matrix = triangle_transform.getBasis();
+
+    	btVector3 zaxis;
+    	get_normal(zaxis);
+    	MAT_SET_Z(matrix,zaxis);
+
+    	btVector3 xaxis = m_vertices[1] - m_vertices[0];
+    	VEC_NORMALIZE(xaxis);
+    	MAT_SET_X(matrix,xaxis);
+
+    	//y axis
+    	xaxis = zaxis.cross(xaxis);
+    	MAT_SET_Y(matrix,xaxis);
+
+    	triangle_transform.setOrigin(m_vertices[0]);
+    }
+
+
+	//! Test triangles by finding separating axis
+	/*!
+	\param other Triangle for collide
+	\param contact_data Structure for holding contact points, normal and penetration depth; The normal is pointing toward this triangle from the other triangle
+	*/
+	bool collide_triangle_hard_test(
+		const GIM_TRIANGLE & other,
+		GIM_TRIANGLE_CONTACT_DATA & contact_data) const;
+
+	//! Test boxes before doing hard test
+	/*!
+	\param other Triangle for collide
+	\param contact_data Structure for holding contact points, normal and penetration depth; The normal is pointing toward this triangle from the other triangle
+	\
+	*/
+	SIMD_FORCE_INLINE bool collide_triangle(
+		const GIM_TRIANGLE & other,
+		GIM_TRIANGLE_CONTACT_DATA & contact_data) const
+	{
+		//test box collisioin
+		GIM_AABB boxu(m_vertices[0],m_vertices[1],m_vertices[2],m_margin);
+		GIM_AABB boxv(other.m_vertices[0],other.m_vertices[1],other.m_vertices[2],other.m_margin);
+		if(!boxu.has_collision(boxv)) return false;
+
+		//do hard test
+		return collide_triangle_hard_test(other,contact_data);
+	}
+
+	/*!
+
+	Solve the System for u,v parameters:
+
+	u*axe1[i1] + v*axe2[i1] = vecproj[i1]
+	u*axe1[i2] + v*axe2[i2] = vecproj[i2]
+
+	sustitute:
+	v = (vecproj[i2] - u*axe1[i2])/axe2[i2]
+
+	then the first equation in terms of 'u':
+
+	--> u*axe1[i1] + ((vecproj[i2] - u*axe1[i2])/axe2[i2])*axe2[i1] = vecproj[i1]
+
+	--> u*axe1[i1] + vecproj[i2]*axe2[i1]/axe2[i2] - u*axe1[i2]*axe2[i1]/axe2[i2] = vecproj[i1]
+
+	--> u*(axe1[i1]  - axe1[i2]*axe2[i1]/axe2[i2]) = vecproj[i1] - vecproj[i2]*axe2[i1]/axe2[i2]
+
+	--> u*((axe1[i1]*axe2[i2]  - axe1[i2]*axe2[i1])/axe2[i2]) = (vecproj[i1]*axe2[i2] - vecproj[i2]*axe2[i1])/axe2[i2]
+
+	--> u*(axe1[i1]*axe2[i2]  - axe1[i2]*axe2[i1]) = vecproj[i1]*axe2[i2] - vecproj[i2]*axe2[i1]
+
+	--> u = (vecproj[i1]*axe2[i2] - vecproj[i2]*axe2[i1]) /(axe1[i1]*axe2[i2]  - axe1[i2]*axe2[i1])
+
+if 0.0<= u+v <=1.0 then they are inside of triangle
+
+	\return false if the point is outside of triangle.This function  doesn't take the margin
+	*/
+	SIMD_FORCE_INLINE bool get_uv_parameters(
+			const btVector3 & point,
+			const btVector3 & tri_plane,
+			GREAL & u, GREAL & v) const
+	{
+		btVector3 _axe1 = m_vertices[1]-m_vertices[0];
+		btVector3 _axe2 = m_vertices[2]-m_vertices[0];
+		btVector3 _vecproj = point - m_vertices[0];
+		GUINT _i1 = (tri_plane.closestAxis()+1)%3;
+		GUINT _i2 = (_i1+1)%3;
+		if(btFabs(_axe2[_i2])<G_EPSILON)
+		{
+			u = (_vecproj[_i2]*_axe2[_i1] - _vecproj[_i1]*_axe2[_i2]) /(_axe1[_i2]*_axe2[_i1]  - _axe1[_i1]*_axe2[_i2]);
+			v = (_vecproj[_i1] - u*_axe1[_i1])/_axe2[_i1];
+		}
+		else
+		{
+			u = (_vecproj[_i1]*_axe2[_i2] - _vecproj[_i2]*_axe2[_i1]) /(_axe1[_i1]*_axe2[_i2]  - _axe1[_i2]*_axe2[_i1]);
+			v = (_vecproj[_i2] - u*_axe1[_i2])/_axe2[_i2];
+		}
+
+		if(u<-G_EPSILON)
+		{
+			return false;
+		}
+		else if(v<-G_EPSILON)
+		{
+			return false;
+		}
+		else
+		{
+			float sumuv;
+			sumuv = u+v;
+			if(sumuv<-G_EPSILON)
+			{
+				return false;
+			}
+			else if(sumuv-1.0f>G_EPSILON)
+			{
+				return false;
+			}
+		}
+		return true;
+	}
+
+	//! is point in triangle beam?
+	/*!
+	Test if point is in triangle, with m_margin tolerance
+	*/
+	SIMD_FORCE_INLINE bool is_point_inside(const btVector3 & point, const btVector3 & tri_normal) const
+	{
+		//Test with edge 0
+		btVector4 edge_plane;
+		this->get_edge_plane(0,tri_normal,edge_plane);
+		GREAL dist = DISTANCE_PLANE_POINT(edge_plane,point);
+		if(dist-m_margin>0.0f) return false; // outside plane
+
+		this->get_edge_plane(1,tri_normal,edge_plane);
+		dist = DISTANCE_PLANE_POINT(edge_plane,point);
+		if(dist-m_margin>0.0f) return false; // outside plane
+
+		this->get_edge_plane(2,tri_normal,edge_plane);
+		dist = DISTANCE_PLANE_POINT(edge_plane,point);
+		if(dist-m_margin>0.0f) return false; // outside plane
+		return true;
+	}
+
+
+	//! Bidireccional ray collision
+	SIMD_FORCE_INLINE bool ray_collision(
+		const btVector3 & vPoint,
+		const btVector3 & vDir, btVector3 & pout, btVector3 & triangle_normal,
+		GREAL & tparam, GREAL tmax = G_REAL_INFINITY)
+	{
+		btVector4 faceplane;
+		{
+			btVector3 dif1 = m_vertices[1] - m_vertices[0];
+			btVector3 dif2 = m_vertices[2] - m_vertices[0];
+    		VEC_CROSS(faceplane,dif1,dif2);
+    		faceplane[3] = m_vertices[0].dot(faceplane);
+		}
+
+		GUINT res = LINE_PLANE_COLLISION(faceplane,vDir,vPoint,pout,tparam, btScalar(0), tmax);
+		if(res == 0) return false;
+		if(! is_point_inside(pout,faceplane)) return false;
+
+		if(res==2) //invert normal
+		{
+			triangle_normal.setValue(-faceplane[0],-faceplane[1],-faceplane[2]);
+		}
+		else
+		{
+			triangle_normal.setValue(faceplane[0],faceplane[1],faceplane[2]);
+		}
+
+		VEC_NORMALIZE(triangle_normal);
+
+		return true;
+	}
+
+
+	//! one direccion ray collision
+	SIMD_FORCE_INLINE bool ray_collision_front_side(
+		const btVector3 & vPoint,
+		const btVector3 & vDir, btVector3 & pout, btVector3 & triangle_normal,
+		GREAL & tparam, GREAL tmax = G_REAL_INFINITY)
+	{
+		btVector4 faceplane;
+		{
+			btVector3 dif1 = m_vertices[1] - m_vertices[0];
+			btVector3 dif2 = m_vertices[2] - m_vertices[0];
+    		VEC_CROSS(faceplane,dif1,dif2);
+    		faceplane[3] = m_vertices[0].dot(faceplane);
+		}
+
+		GUINT res = LINE_PLANE_COLLISION(faceplane,vDir,vPoint,pout,tparam, btScalar(0), tmax);
+		if(res != 1) return false;
+
+		if(!is_point_inside(pout,faceplane)) return false;
+
+		triangle_normal.setValue(faceplane[0],faceplane[1],faceplane[2]);
+
+		VEC_NORMALIZE(triangle_normal);
+
+		return true;
+	}
+
+};
+
+
+
+
+#endif // GIM_TRI_COLLISION_H_INCLUDED
