opengl的立方体消隐算法

#include 
#include 
#include 
#include 
#define  GLUT_WHEEL_UP 3           //定义滚轮操作  
#define  GLUT_WHEEL_DOWN 4  
float PI = 3.1415926;
float points[8][3] = {{-1.0-1.0-1.0}{1.0-1.0-1.0} {1.01.0-1.0} {-1.01.0-1.0} {-1.0-1.01.0} {1.0-1.01.0}
{1.01.01.0} {-1.01.01.0}}; 
float colors[6][3]={{011}{001}{100}{110}{010}{101}};
int faces[6][4]={{4567}{1265}{0321}{0473}{0154}{2376}};
float x[4]y[4]z[4];
float anglex=PI*30/180angley=PI*30/180anglez=PI*30/180;
float size = 1.0;
GLubyte aoyun[]={//0111010001100011000110001100011000101110};
                     0x000x000x000x000x000x1E0x070x00
                     0x030xFE0x0F0x800x070xFF0x070xF0
                     0x0F0xFF0x830xF00x0F0xFF0xC10xF0
                     0x0F0xFF0xF00xF80x0F0xFF0xF80x78
                     0x0F0xF30xF80x380x0F0x800x7C0x38
                     0x0F0x000x380x780x070x040x300x70
                     0x0F0x0C0x200xF80x070x0C0x010xF8
                     0x070x0C0x030xF80x000x0C0x0F0xF8
                     0x080x180x1F0xF00x0E0x380x0F0xF0
                     0x0F0xF00x8F0xF00x0F0xF00x8F0xF0
                     0x0F0xF00x8F0xF00x060x000x0F0xF0
                     0x040x000x030xF00x040x000x000x60
                     0x060x7F0xF00x000x070x7E0x3E0x00
                     0x030xFC0x3F0x800x030xFC0x3F0x80
                     0x010xFE0x7E0x000x000xFF0xF00x00
                     0x000x1F0x000x000x000x000x000x00};
void Rotationx（float x_float y_float z_int i）//点饶X轴旋转时，改变一个点的坐标
{
	x[i] = x_;
	y[i] = y_*cos（anglex） - z_*sin（anglex）;
	z[i] = y_*sin（anglex） + z_*cos（anglex）;
}  
void Rotationy（float x_float y_float z_int i）//点饶Y轴旋转时，改变一个点的坐标
{
	x[i] = x_*cos（angley） + z_*sin（angley）;
	y[i] = y_;
	z[i] = z_*cos（angley） - x_*sin（angley）;
}
void Rotationz（float x_float y_float z_int i）//点饶Z轴旋转时，改变一个点的坐标
{
	x[i] = x_*cos（anglez） - y_*sin（anglez）;
	y[i] = x_*sin（anglez） + y_*cos（anglez）;
	z[i] = z_;
}
void Changex（int aint bint cint d）//一个平面饶X轴旋转时4个点坐标的该改
{
	Rotationx（points[a][0]points[a][1]points[a][2]0）;
	Rotationx（points[b][0]points[b][1]points[b][2]1）;
	Rotationx（points[c][0]points[c][1]points[c][2]2）;
	Rotationx（points[d][0]points[d][1]points[d][2]3）;
}
void Changey（）//一个平面饶Y轴旋转时4个点坐标的该改
{
	Rotationy（x[0]y[0]z[0]0）;
	Rotationy（x[1]y[1]z[1]1）;
	Rotationy（x[2]y[2]z[2]2）;
	Rotationy（x[3]y[3]z[3]3）;
}
void Changez（）//一个平面饶Y轴旋转时4个点坐标的该改
{
	Rotationz（x[0]y[0]z[0]0）;
	Rotationz（x[1]y[1]z[1]1）;
	Rotationz（x[2]y[2]z[2]2）;
	Rotationz（x[3]y[3]z[3]3）;
}
void init（）//初始化
{
    // glEnable（GL_DEPTH_TEST）;