OpenGL入门示例5——黑色背景绘制彩色旋转立方体

#include<GL\glut.h>
#include<windows.h>		//for exit() and Sleep()
static float xrot = 0.0;
static float yrot = 0.0;
static float zrot = 0.0;

void cube()
{
glBegin(GL_QUADS);
glColor3f(1.0,1.0,0.0);
glVertex3f( 1.0, 1.0,-1.0);
glColor3f(0.0,1.0,0.0);
glVertex3f(-1.0, 1.0,-1.0);
glColor3f(0.0,1.0,1.0);
glVertex3f(-1.0, 1.0, 1.0);
glColor3f(1.0,1.0,1.0);
glVertex3f( 1.0, 1.0, 1.0);

glColor3f(1.0,0.0,1.0);
glVertex3f( 1.0,-1.0, 1.0);
glColor3f(0.0,0.0,1.0);
glVertex3f(-1.0,-1.0, 1.0);
glColor3f(0.0,0.0,0.0);
glVertex3f(-1.0,-1.0,-1.0);
glColor3f(1.0,0.0,0.0);
glVertex3f( 1.0,-1.0,-1.0);

glColor3f(1.0,1.0,1.0);
glVertex3f( 1.0, 1.0, 1.0);
glColor3f(0.0,1.0,1.0);
glVertex3f(-1.0, 1.0, 1.0);
glColor3f(0.0,0.0,1.0);
glVertex3f(-1.0,-1.0, 1.0);
glColor3f(1.0,0.0,1.0);
glVertex3f( 1.0,-1.0, 1.0);

glColor3f(1.0,0.0,0.0);
glVertex3f( 1.0,-1.0,-1.0);
glColor3f(0.0,0.0,0.0);
glVertex3f(-1.0,-1.0,-1.0);
glColor3f(0.0,1.0,0.0);
glVertex3f(-1.0, 1.0,-1.0);
glColor3f(1.0,1.0,0.0);
glVertex3f( 1.0, 1.0,-1.0);

glColor3f(0.0,1.0,1.0);
glVertex3f(-1.0, 1.0, 1.0);
glColor3f(0.0,1.0,0.0);
glVertex3f(-1.0, 1.0,-1.0);
glColor3f(0.0,0.0,0.0);
glVertex3f(-1.0,-1.0,-1.0);
glColor3f(0.0,0.0,1.0);
glVertex3f(-1.0,-1.0, 1.0);

glColor3f(1.0,1.0,0.0);
glVertex3f( 1.0, 1.0,-1.0);
glColor3f(1.0,1.0,1.0);
glVertex3f( 1.0, 1.0, 1.0);
glColor3f(1.0,0.0,1.0);
glVertex3f( 1.0,-1.0, 1.0);
glColor3f(1.0,0.0,0.0);
glVertex3f( 1.0,-1.0,-1.0);
glEnd();
}

void display(void)
{

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
glTranslatef(0, 0, -5);
glRotatef(xrot, 1, 0, 0);
glRotatef(yrot, 0, 1, 0);
glRotatef(zrot, 0, 0, 1);
//glPolygonMode(GL_FRONT, GL_LINE);
cube();
xrot = xrot + 1;
yrot = yrot + 1;
zrot = zrot + 1;

glutSwapBuffers();
Sleep(10);
}

void reshape(int w, int h)
{
if(h==0) h = 1;
glViewport(0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0, (GLfloat)w/(GLfloat)h, 0.1, 100.0);
glMatrixMode(GL_MODELVIEW);

}
void init(int width, int height )
{
if(height == 0) height = 1;
glClearColor(0.0, 0.0, 0.0, 0.0);
glClearDepth(1.0);
glDepthFunc(GL_LESS);
glEnable(GL_DEPTH_TEST);
glShadeModel(GL_SMOOTH);

glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0, (GLfloat)width/(GLfloat)height, 1, 100.0);
glMatrixMode(GL_MODELVIEW);
}

void keyboard(unsigned char key, int w, int h)
{
if(key == 'f') // 进入全屏
glutFullScreen();
if(key == 'F') // 退出全屏
{
glutReshapeWindow(640, 480); // 设置窗口大小（不能用初始化的函数）
glutPositionWindow(400, 100); // 设置窗口位置（不能用初始化的函数）
}
if(key == 27) // ESC退出程序
exit(0);
}

int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowPosition(400, 100);
glutInitWindowSize(640, 480);
glutCreateWindow("Spin cube");

glutDisplayFunc(display);
glutIdleFunc(display);

glutReshapeFunc(reshape);
glutKeyboardFunc(keyboard);
init(640, 480);
glutMainLoop();
return 0;
}