www.pudn.com > LightTrack.rar > Vector.h

#if !defined(_VECTOR_) 
#define _VECTOR_ 
 
/** 3DGPL *************************************************\ 
 * ()                                                     * 
 * Header for operations on vectors used by the ray       * 
 * tracer.                                                * 
 *                                                        * 
 * Files:                                                 * 
 *  vector.c                 Operations on vectors.       * 
 *                                                        * 
 * (c) 1995-98 Sergei Savchenko, (savs@cs.mcgill.ca)      * 
\**********************************************************/ 
 
 
 
 
//三维矢量，呵呵 
#define V_LNG_VECTOR 3                      /* X Y Z */ 
 
//零矢量 
float *V_zero(float *vec); 
 
//矢量的赋值 
float *V_vector_coordinates(float *vector,float x,float y,float z); 
 
//矢量的计算(from & to) 
float *V_vector_points(float *vector,float *from,float *to); 
 
//to what?设置矢量V Set 
float *V_set(float *what,float *to); 
 
//矢量倍增 
float *V_multiply(float *result,float *vector,float m); 
 
//两个向量的积 
float V_scalar_product(float *a,float *b); 
 
//这个是什么计算???不记得了 
float* V_vector_product(float *product,float *a,float *b); 
 
//矢量和 
float *V_sum(float *sm,float *a,float *b); 
 
//矢量差 
float *V_difference(float *differ,float *a,float *b); 
 
//矢量单位化 
float *V_unit_vector(float *vector,float *from,float *to); 
 
//计算一个平面等式的系数 
float *V_plane(float *plane,float *normal,float *origine); 
 
//检查点是否在平面上 
float V_vertex_on_plane(float *plane,float *vertex); 
 
/**********************************************************/ 
 
#endif