/*======================
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]

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2015-08-06?16:12??bunny\
?????目錄???????????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
?????目錄???????????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
?????目錄???????????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
............此處省略34個文件信息