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collision.c in Collision.rar

			

#include <stdlib.h>
#include <GL/glut.h>
#include <stdio.h>
#include <math.h>
#include <sys/types.h>
#include <time.h>

// 光源定义
GLfloat light_diffuse[] = {1.0, 1.0, 1.0, 1.0};  
GLfloat light_position[] = {10.0, 10.0, 30.0, 1.0};  
int win_id;
static GLuint texName;

// SETUP DATASTRUCTURE FOR OBJECTS
#define MAXGUYS 300
#define MAXOBJS 80
int NUMOBJS;
int TEXENABLE;
int DEBUGENABLE;
int frame;
//  点的数据结构
struct point 
{
	float x; 
	float y; 
	float z;
};
//  有关弹性碰撞的数据结构
struct spring 
{
	struct point* p1; 
	struct point* p2;
	struct point* v1; 
	struct point* v2;
	float* m1; 
	float* m2;
	float length; 
	float stiff; 
	float damp; 
	float breaklen;
};
//  有关碰撞线的数据结构
struct cdline 
{
	struct point* p1; 
	struct point* p2; 
	struct point* v1; 
	struct point* v2;
	struct point* vi1; 
	struct point* vi2;
	struct point min; 
	struct point max;
	float* mass;
	float fric;
};
//  对象的面的数据结构
struct face 
{
	struct point* p1; 
	struct point* p2;
	struct point* p3;
	struct point* v1; 
	struct point* v2; 
	struct point* v3;
	struct point* vi1; 
	struct point* vi2; 
	struct point* vi3; 
    float* m1; 
	float* m2; 
	float* m3;
    struct point min; 
	struct point max;
    float fric; 
	struct point nor;
};
//  有关对象的数据结构
struct object 
{
	int NUMPTS;
	int NUMSPRINGS;
	int NUMFACES;
	int NUMCDLINES;
	float mass[MAXGUYS];
	float r,g,b,a;
	struct point points[MAXGUYS];
	struct point vel[MAXGUYS];
	struct point velinc[MAXGUYS];
	struct spring springs[MAXGUYS];
	struct cdline cdlines[MAXGUYS];
	struct face faces[MAXGUYS];
	struct point max;                             // 对象的边界盒
	struct point min;
	int texture;
	int NUMTEXPTS;
	int texmap[64][64];
	struct point texpoints[MAXGUYS]; 
	struct face texfaces[MAXGUYS];
};
struct object objects[MAXOBJS];

// 定义一些底层函数
#define sqa(A) (A*fabs(A))
#define length(A) sq			

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