#include <GL/glut.h>

float angleX=0,angle1=0,angle3=0;

void display()

{

 glEnable(GL_DEPTH_TEST);

 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

 glPushMatrix();

  glRotatef(angleX ,0,1,0);

  glutWireTeapot(0.3);

 glPushMatrix(); //右肩 

     glTranslatef(0.4,0,0);

     glutSolidSphere(0.2,30,30);

     glPushMatrix();//右手 

         glRotatef(angle1 ,0,0,1);

         glTranslatef(0.3,0,0);

         glScalef(2,0.5,0.5);

         glutSolidCube(0.2); 

     glPopMatrix();  

 glPopMatrix(); 

  

 glPushMatrix(); //左肩 

     glTranslatef(-0.4,0,0);

     glutSolidSphere(0.2,30,30);

     glPushMatrix();//左手 

         glRotatef(angle1 ,0,0,1);

         glTranslatef(-0.3,0,0);

         glScalef(2,0.5,0.5);

         glutSolidCube(0.2); 

     glPopMatrix();  

 glPopMatrix(); 

  glPushMatrix();//右腳 

  glTranslatef(0.2,-0.3,0);

  glRotatef(angle3,1,0,0);

  glTranslatef(0,-0.25,0);

  glPushMatrix();

  glScalef(0.2,0.5,0.2);

  glutSolidCube(1); 

 glPopMatrix(); 

  glPopMatrix();

  

  glPushMatrix();//左腳 

  glTranslatef(-0.2,-0.3,0);

  glRotatef(angle3,1,0,0);

  glTranslatef(0,-0.25,0);

  glPushMatrix();

  glScalef(0.2,0.5,0.2);

  glutSolidCube(1); 

 glPopMatrix(); 

  glPopMatrix();

 glPushMatrix();//頭 

  glTranslatef(0,0.4,0);

  glutSolidSphere(0.2,30,30);

 glPopMatrix(); 

 glPopMatrix();

 glutSwapBuffers(); 

}

void keyboard (unsigned char key , int x,int y)

{

 if(key=='a') angleX+=3;

 if(key=='b') angleX-=3;

 if(key=='1') angle1+=3;

 if(key=='2') angle1-=3; 

 if(key=='3') angle3+=5;

 if(key=='4') angle3-=5;

 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);

}

int main()

{

 glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

 glutCreateWindow("week11");

 glutDisplayFunc(display);

 glutKeyboardFunc(keyboard);

 myLight();

 glutMainLoop();

}