燈燈燈燈燈

#include <GL/glut.h>
#include <stdio.h>
float angleX=0;
void keyboard(unsigned char key,int x,int y)
{
printf("%c %d %d\n",key,x,y);
if(key=='a') angleX+=3;
if(key=='b') angleX-=3;
glutPostRedisplay();
}
void myLight()
{
const GLfloat light_position[] = { 2.0f, 5.0f, 5.0f, 0.0f };
glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);
    glEnable(GL_LIGHTING);
glLightfv(GL_LIGHT0, GL_POSITION, light_position);
}
void display()
{
glEnable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(angleX,0,1,0);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}

int main()
{
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week10");

glutDisplayFunc(display);
glutKeyboardFunc(keyboard);

myLight();

glutMainLoop();
}