Week 10 (打光)

#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();
}