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source: code/branches/physics/src/bullet/BulletCollision/CollisionShapes/btMultimaterialTriangleMeshShape.h @ 1972

Last change on this file since 1972 was 1963, checked in by rgrieder, 16 years ago

Added Bullet physics engine.

  • Property svn:eol-style set to native
File size: 4.7 KB
Line 
1/*
2Bullet Continuous Collision Detection and Physics Library
3Copyright (c) 2003-2008 Erwin Coumans  http://continuousphysics.com/Bullet/
4
5This software is provided 'as-is', without any express or implied warranty.
6In no event will the authors be held liable for any damages arising from the use of this software.
7Permission is granted to anyone to use this software for any purpose,
8including commercial applications, and to alter it and redistribute it freely,
9subject to the following restrictions:
10
111. 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.
122. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
133. This notice may not be removed or altered from any source distribution.
14*/
15
16/// This file was created by Alex Silverman
17
18#ifndef BVH_TRIANGLE_MATERIAL_MESH_SHAPE_H
19#define BVH_TRIANGLE_MATERIAL_MESH_SHAPE_H
20
21#include "btBvhTriangleMeshShape.h"
22#include "btMaterial.h"
23
24///The BvhTriangleMaterialMeshShape extends the btBvhTriangleMeshShape. Its main contribution is the interface into a material array, which allows per-triangle friction and restitution.
25ATTRIBUTE_ALIGNED16(class) btMultimaterialTriangleMeshShape : public btBvhTriangleMeshShape
26{
27    btAlignedObjectArray <btMaterial*> m_materialList;
28    int ** m_triangleMaterials;
29
30public:
31
32        BT_DECLARE_ALIGNED_ALLOCATOR();
33
34    btMultimaterialTriangleMeshShape(): btBvhTriangleMeshShape() {}
35    btMultimaterialTriangleMeshShape(btStridingMeshInterface* meshInterface, bool useQuantizedAabbCompression, bool buildBvh = true):
36        btBvhTriangleMeshShape(meshInterface, useQuantizedAabbCompression, buildBvh)
37        {
38            btVector3 m_triangle[3];
39            const unsigned char *vertexbase;
40            int numverts;
41            PHY_ScalarType type;
42            int stride;
43            const unsigned char *indexbase;
44            int indexstride;
45            int numfaces;
46            PHY_ScalarType indicestype;
47
48            //m_materialLookup = (int**)(btAlignedAlloc(sizeof(int*) * meshInterface->getNumSubParts(), 16));
49
50            for(int i = 0; i < meshInterface->getNumSubParts(); i++)
51            {
52                m_meshInterface->getLockedReadOnlyVertexIndexBase(
53                    &vertexbase,
54                    numverts,
55                    type,
56                    stride,
57                    &indexbase,
58                    indexstride,
59                    numfaces,
60                    indicestype,
61                    i);
62                //m_materialLookup[i] = (int*)(btAlignedAlloc(sizeof(int) * numfaces, 16));
63            }
64        }
65
66        ///optionally pass in a larger bvh aabb, used for quantization. This allows for deformations within this aabb
67        btMultimaterialTriangleMeshShape(btStridingMeshInterface* meshInterface, bool useQuantizedAabbCompression,const btVector3& bvhAabbMin,const btVector3& bvhAabbMax, bool buildBvh = true):
68        btBvhTriangleMeshShape(meshInterface, useQuantizedAabbCompression, bvhAabbMin, bvhAabbMax, buildBvh)
69        {
70            btVector3 m_triangle[3];
71            const unsigned char *vertexbase;
72            int numverts;
73            PHY_ScalarType type;
74            int stride;
75            const unsigned char *indexbase;
76            int indexstride;
77            int numfaces;
78            PHY_ScalarType indicestype;
79
80            //m_materialLookup = (int**)(btAlignedAlloc(sizeof(int*) * meshInterface->getNumSubParts(), 16));
81
82            for(int i = 0; i < meshInterface->getNumSubParts(); i++)
83            {
84                m_meshInterface->getLockedReadOnlyVertexIndexBase(
85                    &vertexbase,
86                    numverts,
87                    type,
88                    stride,
89                    &indexbase,
90                    indexstride,
91                    numfaces,
92                    indicestype,
93                    i);
94                //m_materialLookup[i] = (int*)(btAlignedAlloc(sizeof(int) * numfaces * 2, 16));
95            }
96        }
97       
98    virtual ~btMultimaterialTriangleMeshShape()
99    {
100/*
101        for(int i = 0; i < m_meshInterface->getNumSubParts(); i++)
102        {
103            btAlignedFree(m_materialValues[i]);
104            m_materialLookup[i] = NULL;
105        }
106        btAlignedFree(m_materialValues);
107        m_materialLookup = NULL;
108*/
109    }
110        virtual int     getShapeType() const
111        {
112                return MULTIMATERIAL_TRIANGLE_MESH_PROXYTYPE;
113        }
114       
115        //debugging
116        virtual const char*     getName()const {return "MULTIMATERIALTRIANGLEMESH";}
117
118    ///Obtains the material for a specific triangle
119    const btMaterial * getMaterialProperties(int partID, int triIndex);
120
121}
122;
123
124#endif //BVH_TRIANGLE_MATERIAL_MESH_SHAPE_H
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