glut基本程序+旋转的四边形

#include "stdafx.h"
#include

#include

#pragma comment( lib, "glut32.lib")

//注意:glut.h与glut32.lib版本要一样,否则会出现链接错误:无法解析的外部符号__imp____glutInitWithExit@12，该符号在函数 _glutInit_ATEXIT_HACK@8 中被引用,因为版本不同,可能函数的名称或参数列表不同,即找不到函数的定义)

using namespace std;

double g_dAngle= 0.0f;

void Init(void)
{
 glClearColor(0.0f,0.0f,0.0f,0.0f);
}

void Display(void)
{
 glClear(GL_COLOR_BUFFER_BIT);
 glColor3f(1.0f,0.0f,0.0f);
 

 glLoadIdentity();
 glTranslatef( 0.0f, 0.0f , -2.0f);

 glRotatef( g_dAngle, 0.0f, 0.0f, 1.0f);
 //draw a square
 glBegin( GL_QUADS);
 
  glVertex3f(  0.5f,  0.5f, 0.0f);
  glVertex3f( -0.5f,  0.5f, 0.0f);
  glVertex3f( -0.5f, -0.5f, 0.0f);
  glVertex3f(  0.5f, -0.5f, 0.0f);

 glEnd();

 //glFlush();
 glutSwapBuffers(); //双缓冲

}
void Reshape(int w,int h)
{ 

 glViewport(0,0  ,(GLsizei)w  ,(GLsizei)h  );
 glMatrixMode(GL_PROJECTION);
 glLoadIdentity();
 
 gluPerspective( 90.0f, (GLfloat)w/ (GLfloat)h, 0.1f, 1000.0f );

 glMatrixMode(GL_MODELVIEW);
 glLoadIdentity();
}

void OnTimer( int iTimerIndex)
{
 //更新角度
 g_dAngle += 2.0f;
 if ( g_dAngle > 360.0f)
 {
  g_dAngle -= 360.0f;
 }

 glutPostRedisplay();//刷新显示
    glutTimerFunc( 50, OnTimer, 0);

}
 

void Keyboard(unsigned char key, int x, int y)
{

    switch (key)
    {
        case 'w':     //前
        break;
        case 's':     //后
            break;
        case 'a':     //左
            break;
        case 'd':     //右
            break;
        case 'q':    //上
            break;
        case 27:
            exit(0);
            break;
    }
}

void MouseEvent(int button, int state, int x, int y)
{
    switch(button)
    {
        case GLUT_LEFT_BUTTON:
            cout<<"GLUT_LEFT_BUTTON"<             break;
        case GLUT_RIGHT_BUTTON:
            cout<<"GLUT_RIGHT_BUTTON"<             break;
        case GLUT_MIDDLE_BUTTON:
            cout<<"GLUT_MIDDLE_BUTTON"<             break;
    }
}
void MotionMove(int x,int y)
{

}
 
int main(int argc, char** argv)
{
 glutInit(&argc,argv);
 glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
 glutInitWindowSize(450,450);
 glutInitWindowPosition(200,200);
 glutCreateWindow("Hello");
 Init();
 glutDisplayFunc( Display);
 glutReshapeFunc( Reshape);

 //定时器
 glutTimerFunc( 50, OnTimer, 0 );

 glutKeyboardFunc( Keyboard);
    glutMouseFunc( MouseEvent);
    glutMotionFunc( MotionMove);

 glutMainLoop();
 return 0;
}