OpenGL读取bunny文件+斯坦福兔子

OpenGL读取bunny文件,并且画出来。画出斯坦福兔子

/*======================
opengl + bunny
========================*/
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include “windows.h“
using namespace std;

#define POINT_MAX 40000        //max number of point
#define TRIANGLE_MAX 70000     //max number of triangle
#define max_num 999999999
struct Point
{
	GLfloat x;
	GLfloat y;
	GLfloat z;
	GLfloat nx;      //normal vector
	GLfloat ny;
	GLfloat nz;
	int num;
};

struct Triangle
{
	GLint point1;
	GLint point2;
	GLint point3;
	GLfloat nx;
	GLfloat ny;
	GLfloat nz;
};

Point point[POINT_MAX];
Triangle triangle[TRIANGLE_MAX];
int NumOfPoint=0NumOfTriangle=0;   
GLfloat min_x=max_nummin_y=max_nummin_z=max_nummax_x=-max_nummax_y=-max_nummax_z=-max_num;

void readfile（）
{
	ifstream fin（“bunny.vt“）;  //read file
	fin>>NumOfPoint>>NumOfTriangle;     
	for（int i=0;i	{
		fin>>point[i].x>>point[i].y>>point[i].z;
		point[i].num=0;
		point[i].nx=0;
		point[i].ny=0;
		point[i].nz=0;

		//calculate the min and max of the coord
		if（point[i].x		if（point[i].x>max_x）max_x=point[i].x;
		if（point[i].y		if（point[i].y>max_y）max_y=point[i].y;
		if（point[i].z		if（point[i].z>max_z）max_z=point[i].z;


	}
	for（int i=0;i	{
		fin>>triangle[i].point1>>triangle[i].point2>>triangle[i].point3;
		GLfloat a1b1c1a2b2c2;   //two vector [a1b1c1] and [a2b2c2]
		a1=point[triangle[i].point1].x-point[triangle[i].point2].x;
		b1=point[triangle[i].point1].y-point[triangle[i].point2].y;
		c1=point[triangle[i].point1].z-point[triangle[i].point2].z;
		a2=point[triangle[i].point1].x-point[triangle[i].point3].x;
		b2=point[triangle[i].point1].y-point[triangle[i].point3].y;
		c2=point[triangle[i].point1].z-point[triangle[i].point3].z;      

		//then compute triangle normal vertex
		triangle[i].nx=b1*c2-b2*c1;
		triangle[i].ny=a2*c1-a1*c2;
		triangle[i].nz=a1*b2-a2*b1;

		//calcuate three points‘ normal vertex
		point[triangle[i].point1].num++;
		point[triangle[i].point1].nx+=triangle[i].nx;
		point[triangle[i].point1].ny+=triangle[i].ny;
		point[triangle[i].point1].nz+=triangle[i].nz;

		point[triangle[i].point2].num++;
		point[triangle[i].point2].nx+=triangle[i].nx;
		point[triangle[i].point2].ny+=triangle[i].ny;
		point[triangle[i].point2].nz+=triangle[i].nz;

		point[triangle[i].point3].num++;
		point[triangle[i].point3].nx+=triangle[i].nx;
		point[triangle[i].point3].ny+=triangle[i].ny;
		point[triangle[i].point3].nz+=triangle[i].nz;
	}

	for（int i=0;i	{
		point[i].nx/=point[i].num;
		point[i].ny/=point[i].num;
		point[i].nz/=point[i].num;
		//normalize the vertex normal
		GLfloat nor=sqrt（pow（point[i].nx2）+pow（point[i].ny2）+pow（point[i].nz2））;
		point[i].nx/=nor;
		point[i]

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2015-08-06 16:12  bunny\
     目录           0  2015-08-06 16:06  bunny\Debug\
     文件      104960  2015-08-06 16:12  bunny\Debug\opengl.exe
     文件     1085248  2015-08-06 16:12  bunny\Debug\opengl.ilk
     文件     1084416  2015-08-06 16:12  bunny\Debug\opengl.pdb
     目录           0  2015-08-06 13:57  bunny\opengl\
     文件    32309248  2015-08-06 16:12  bunny\opengl.sdf
     文件         885  2015-07-24 20:10  bunny\opengl.sln
     文件       21504  2015-08-06 16:12  bunny\opengl.v11.suo
     文件     2285487  2003-08-21 09:44  bunny\opengl\bunny.vt
     目录           0  2015-08-06 16:12  bunny\opengl\Debug\
     文件        1518  2015-08-06 16:12  bunny\opengl\Debug\cl.command.1.tlog
     文件       46052  2015-08-06 16:12  bunny\opengl\Debug\CL.read.1.tlog
     文件         312  2015-08-06 16:12  bunny\opengl\Debug\CL.write.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link-cvtres.read.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link-cvtres.write.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link-rc.read.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link-rc.write.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link.15316-cvtres.read.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link.15316-cvtres.write.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link.15316-rc.read.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link.15316-rc.write.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link.15316.read.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link.15316.write.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link.26104-cvtres.read.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link.26104-cvtres.write.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link.26104-rc.read.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link.26104-rc.write.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link.26104.read.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link.26104.write.1.tlog
     文件           2  2015-08-06 16:12  bunny\opengl\Debug\link.28352-cvtres.read.1.tlog
............此处省略34个文件信息