00001 
00007 #ifndef __CVECTOR3D_H__
00008 #define __CVECTOR3D_H__
00009 
00010 #include "math.h"
00011 #include "stdio.h"
00012 
00013 class CVector3D
00014 {
00015         public:
00016                 float x, y, z;
00017 
00018                 // constructeurs et destructeur
00019                 CVector3D() : x(0.0f), y(0.0f), z(0.0f) {}
00020                 CVector3D(float _x, float _y, float _z) : x(_x), y(_y), z(_z) {}
00021                 virtual ~CVector3D() {}
00022 
00023                 // operateurs
00024                 __forceinline friend CVector3D operator+ (const CVector3D& v1, const CVector3D& v2) // addition
00025                 { return CVector3D(v1.x+v2.x, v1.y+v2.y, v1.z+v2.z); }
00026 
00027                 __forceinline friend void operator+= (CVector3D& v1, const CVector3D& v2) // addition
00028                 { v1.x += v2.x; v1.y += v2.y; v1.z += v2.z; }
00029 
00030                 __forceinline friend CVector3D operator- (const CVector3D& v1, const CVector3D& v2) // soustraction
00031                 { return CVector3D(v1.x-v2.x, v1.y-v2.y, v1.z-v2.z); }
00032 
00033                 __forceinline friend CVector3D operator* (const CVector3D& v1, const CVector3D& v2) // produit en croix
00034                 { return CVector3D(     ( v1.y * v2.z ) - ( v1.z * v2.y ), ( v1.z * v2.x ) - ( v1.x * v2.z ), ( v1.x * v2.y ) - ( v1.y * v2.x ) ); }; 
00035                 
00036                 __forceinline friend CVector3D operator* (const CVector3D& v1, const float multiple) // scaling
00037                 { return CVector3D(v1.x*multiple, v1.y*multiple, v1.z*multiple); }
00038 
00039                 __forceinline friend CVector3D operator/ (const CVector3D& v1, const float multiple) // scaling
00040                 { return CVector3D(v1.x/multiple, v1.y/multiple, v1.z/multiple); }
00041 
00042                 __forceinline friend void operator/= (CVector3D& v1, float multiple) // scaling
00043                 { v1.x /= multiple; v1.y /= multiple; v1.z /= multiple; }
00044 
00045                 __forceinline friend CVector3D operator- (const CVector3D& v) // opposé
00046                 { return CVector3D(-v.x, -v.y, -v.z); }
00047 
00048                 // methodes
00049                 __forceinline float DotProduct(const CVector3D& v) { return (x*v.x + y*v.y + z*v.z); }
00050                 __forceinline float GetMagnitude()      const { return (float)sqrt(x*x+y*y+z*z); }
00051         __forceinline void Normalize() { float mag = GetMagnitude(); x /= mag; y /= mag; z /= mag; }
00052                 __forceinline float GetSquareLength() const { return (x*x+y*y+z*z); }
00053                 __forceinline CVector3D Reflect(const CVector3D& n) { float fac=2.0f*(n.x*x+n.y*y+n.z*z); return CVector3D(fac*n.x-x,fac*n.y-y,fac*n.z-z); }
00054 };
00055 
00056 
00057 #endif /* #ifndef __CVECTOR3D_H__ */