#include <GL/glut.h>
GLfloat rquad; //立方体旋转角度
void init(void)
{
glClearColor(0.0f,0.0f,0.0f,0.0f);
glShadeModel(GL_SMOOTH);
glEnable(GL_DEPTH_TEST); //激活深度测试，以隐藏被遮挡面
}
void display(void)
{
//清除颜色缓存和深度缓存
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
glTranslatef(0.0f,0.0f,-7.0f);
glRotatef(rquad,1.0f,1.0f,1.0f);
glBegin(GL_QUADS);
glColor3f(0.0f,1.0f,0.0f);
glVertex3f(1.0f,1.0f,-1.0f);
glVertex3f(-1.0f,1.0f,-1.0f);
glVertex3f(-1.0f,1.0f,1.0f);
glVertex3f(1.0f,1.0f,-1.0f);
glColor3f(1.0f,0.5f,0.0f);
glVertex3f(1.0f,-1.0f,1.0f);
glVertex3f(-1.0f,-1.0f,1.0f);
glVertex3f(-1.0f,-1.0f,-1.0f);
glVertex3f(1.0f,-1.0f,-1.0f);
glColor3f(1.0f,0.0f,0.0f);
glVertex3f(1.0f,1.0f,1.0f);
glVertex3f(-1.0f,1.0f,1.0f);
glVertex3f(-1.0f,-1.0f,1.0f);
glVertex3f(1.0f,-1.0f,1.0f);
glColor3f(1.0f,1.0f,0.0f);
glVertex3f(1.0f,-1.0f,-1.0f);
glVertex3f(-1.0f,-1.0f,-1.0f);
glVertex3f(-1.0f,1.0f,-1.0f);
glVertex3f(1.0f,1.0f,-1.0f);
glColor3f(0.0f,0.0f,1.0f);
glVertex3f(-1.0f,1.0f,1.0f);
glVertex3f(-1.0f,1.0f,-1.0f);
glVertex3f(-1.0f,-1.0f,-1.0f);
glVertex3f(-1.0f,-1.0f,1.0f);
glColor3f(1.0f,0.0f,1.0f);
glVertex3f(1.0f,1.0f,-1.0f);
glVertex3f(1.0f,1.0f,1.0f);
glVertex3f(1.0f,-1.0f,1.0f);
glVertex3f(-1.0f,-1.0f,-1.0f);
glEnd();
rquad-=0.2f; //加一个角度
glutSwapBuffers(); //交换双缓存
}
void reshape(int width,int height)
{
glViewport(0,0,width,height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
void keyboard(unsigned char key,int x,int y)
{
switch (key)
{
case 27:
//exit(0);
break;
default:
break;
}
}
int main(int argc,char** argv)
{
glutInit(&argc,argv);
//使用双缓存模式和深度缓存
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
glutInitWindowSize(600,350);
glutInitWindowPosition(200,200);
glutCreateWindow("旋转动画");
init();
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutKeyboardFunc(keyboard);
glutIdleFunc(display); //设置空闲时用的函数
glutMainLoop();
return 0;
}
