OpenGL实现的C++三维桌子代码示例

/*
 * This Code Was Created By Jeff Molofee 2000
 * A HUGE Thanks To Fredric Echols For Cleaning Up
 * And Optimizing The Base Code, Making It More Flexible!
 * If You've Found This Code Useful, Please Let Me Know.
 * Visit My Site At nehe.gamedev.net
 */

#include <windows.h> // Header File For Windows
#include <stdio.h> // Header File For Standard Input/Output
#include <gl\gl.h> // Header File For The OpenGL32 Library
#include <gl\glu.h> // Header File For The GLu32 Library
#include<gl\glut.h>
#include <gl\glaux.h> // Header File For The Glaux Library

HDC hDC=NULL; // Private GDI Device Context
HGLRC hRC=NULL; // Permanent Rendering Context
HWND hWnd=NULL; // Holds Our Window Handle
HINSTANCE hInstance; // Holds The Instance Of The Application

bool keys[256]; // Array Used For The Keyboard Routine
bool active=TRUE; // Window Active Flag Set To TRUE By Default
bool fullscreen=TRUE; // Fullscreen Flag Set To Fullscreen Mode By Default

GLfloat xrot; // X Rotation ( NEW )
GLfloat yrot; // Y Rotation ( NEW )
GLfloat zrot; // Z Rotation ( NEW )

typedef float point3[3];
typedef int edge[2];

typedef int face[4];
point3 vertices_top[8]={
{-1.5,-0.15,-1.5},
    {-1.5,-0.15,1.5},
    {-1.5,0.15,-1.5},
    {-1.5, 0.15,1.5},
    {1.5,-0.15,-1.5},
    {1.5,-0.15,1.5},
    {1.5,0.15,-1.5},
    {1.5,0.15,1.5}
};
point3 vertices_leg[8]={
{-0.15,-1.5,-0.15},
    {-0.15,-1.5,0.15},
    {-0.15,1.5,-0.15},
    {-0.15,1.5,0.15},
    {0.15,-1.5,-0.15},
    {0.15,-1.5,0.15},
    {0.15,1.5,-0.15},
    {0.15,1.5,0.15}
};
point3 normals[6]={
{-1.0,0.0,0.0},
{0.0,0.0,1.0},
{0.0,1.0,0.0},
{0.0,0.0,-1.0},
{0.0,-1.0,0.0},
{1.0,0.0,0.0}
};
edge edges[24]={