#include <GL/glut.h>

float angleX =0,angle2=0,angle3=0;
void keyboard(unsigned char key, int x, int y)
{
if(key=='1') angleX+=5;
if(key=='2') angleX-=5;
if(key=='3') angle2+=5;
if(key=='4') angle2-=5;
if(key=='5') angle3+=5;
if(key=='6') angle3-=5;
glutPostRedisplay();//請電腦重新畫一次畫面
}

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();
glPushMatrix();
glRotatef(angleX, 0,1,0);
glTranslatef(0,0.45,0);
glutWireTeapot(0.3);
glPopMatrix();

glRotatef(angleX, 0,1,0);
glPushMatrix();//右肩
glTranslatef(0.5,0.45,0);
glutSolidSphere(0.2,30,30);
glPushMatrix();
glRotatef(angle2, 0,0,1);
glTranslatef(0.3,0,0);
glScalef(0.3,0.2,0.2);
glutSolidCube(1);
glPopMatrix();
glPopMatrix();

glPushMatrix();//左肩
glTranslatef(-0.5,0.45,0);
glutSolidSphere(0.2,30,30);
glPushMatrix();
glRotatef(angle2, 0,0,1);
glTranslatef(-0.3,0,0);
glScalef(0.3,0.2,0.2);
glutSolidCube(1);
glPopMatrix();
glPopMatrix();


glPushMatrix();//頭
glTranslatef(0,0.8,0);
glutSolidSphere(0.2,30,30);

glPopMatrix();

glPushMatrix();//左腳
glTranslatef(0.2,0,0);
glutSolidSphere(0.2,30,30);
glPushMatrix();
glRotatef(-angle3, 1,0,0);
glTranslatef(-0.4,-0.2,0);
glScalef(0.2,0.3,0.2);
glutSolidCube(1);
glPopMatrix();
glPopMatrix();

glPushMatrix();//右腳
glTranslatef(-0.2,0,0);
glutSolidSphere(0.2,30,30);
glPushMatrix();
glRotatef(angle3, 1,0,0);
glTranslatef(0.4,-0.2,0);
glScalef(0.2,0.3,0.2);
glutSolidCube(1);
glPopMatrix();
glPopMatrix();



glPopMatrix();
glutSwapBuffers();
}

int main()
{
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week11");

glutDisplayFunc(display);
glutKeyboardFunc(keyboard);

myLight();
glutMainLoop();
}