source: orxonox.OLD/branches/terrain/src/lib/graphics/importer/terrain/types.h @ 8321

/*
        orxonox - the future of 3D-vertical-scrollers
 
        Copyright (C) 2006 orx
 
        This program is free software; you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation; either version 2, or (at your option)
        any later version.
 
        ### File Specific:
        main programmer: Marco Biasini
        This files needs to be removed after code-revision...
 */
#ifndef TYPES_H
#define TYPES_H

#ifndef NULL
#define NULL 0
#endif
#include <math.h>


struct Triple {
        Triple( float _x, float _y, float _z ) 
        { 
                x = _x; y = _y; z = _z; 
        }
        Triple() { x = y = z = 0.0f; }
        inline float length() const
        { return sqrt( x*x+y*y+z*z ); } 
        float x, y, z;
};

struct TexCoord {
        TexCoord( float _u, float _v )
        {
                u = _u; v = _v;
        }
        TexCoord() { u = v = 0.0f; }
        float u, v;
};

/**
 * Defines an axis aligned box.
 */
struct ABox {
        
        ABox( Triple _min, Triple _max)
        {
                corner = _min;
                x = _max.x-_min.x;
                y = _max.y-_min.y;
                z = _max.z-_min.z;
        }
        
        ABox() 
        {
                corner = Triple( 0.0f, 0.0f, 0.0f );
                x = y = z = 0.0f;
        }
        inline void set( const Triple& _min, const Triple& _max )
        {
                setMin( _min ); setMax( _max );
        }
        inline void setMax( const Triple& _max )
        {
                x = _max.x-corner.x;
                y = _max.y-corner.y;
                z = _max.z-corner.z;
        }
        inline void setMin( const Triple& _min )
        {
                corner = _min;
        }
        inline Triple vertexP( const Triple& _normal ) const 
        {
                Triple res = corner;
                if ( _normal.x > 0 )
                        res.x+= x;
                if ( _normal.y > 0 )
                        res.y+= y;
                if ( _normal.z > 0 )
                        res.z+= z;                      
                        
                return res;
        }
        inline Triple vertexN( const Triple& _normal ) const
        {               
                Triple res = corner;
                if ( _normal.x < 0 )
                        res.x+= x;
                if ( _normal.y < 0 )
                        res.y+= y;
                if ( _normal.z < 0 )
                        res.z+= z;                      
                        
                return res;
        
        }
        inline Triple min() const { return Triple(corner); }
        inline Triple max() const { return Triple( corner.x+x, corner.y+y, corner.z+z ); }
        Triple corner;
        float x, y, z;
        
};

struct Plane {
        Plane() { n = Triple( 0.0f, 1.0f, 0.0f ); d = 0.0f; }
        inline void setCoefficients( float _nx, float _ny, float _nz, float _d )
        {
                n = Triple( _nx, _ny, _nz );
                float l = n.length();
                n.x /= l; n.y/=l; n.z/=l;
                d = _d/l;
        }
        inline float distance( const Triple& _point ) const
        {
                return _point.x*n.x+_point.y*n.y+_point.z*n.z+d;
        }
        Triple n;
        float d;
};

/**
 * TODO: Replace this method with the actual matrix multiplication code!
 */
inline void multMat(float *res,float *a, float *b) {


        for (int i=0;i<4;i++) {
                for (int j = 0;j < 4;j++) {
                        res[i*4+j] = 0.0;
                        for (int k = 0; k < 4; k++) {
                                res[i*4+j] += a[i*4+k] * b[k*4+j];
                        }
                }
        }
}
typedef unsigned char UByte;
#endif