#include<GL/glut.h>
#include<stdio.h>
float angleX=0,startX=0;

void mouse(int button,int state,int x,int y)
{
printf("%d %d %d %d\n",button,state,x,y);
startX=x;
}
void motion(int x, int y)
{
printf("%d %d\n",x,y);
angleX=x-startX;
glutPostRedisplay();
}
void keyboard(unsigned char key,int x,int y)
{
if(key=='a') angleX+=3;
if(key=='b') angleX-=3;
glutPostRedisplay();
}

void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(angleX,0,1,0);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}
void myLight()
{
 const GLfloat light_position[] = {2.0f, 5.0f,0.0f,0.0f};
 glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);
    glEnable(GL_LIGHTING);
    glLightfv(GL_LIGHT0,GL_POSITION,light_position);
}

int main()
{
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week");
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
myLight();
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutMainLoop();
}