#include<stdio.h>
#include <GL/glut.h>
#include <GL/gl.h>
#include <GL/glu.h>

#define W 800
#define H 600

int c=0,height,width,r=1;


void reshape(int h, int w)
{
    float aspectRatio;
    height=h;
    width=w;
    aspectRatio=(float)height/(float)width;
    glViewport(0,0,height,width);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluPerspective(60.0f, aspectRatio, 0.1f, 100.0f);
}


void display(void)
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    gluLookAt(
            0.0f,2.0f,6.0f,
            0.0f,0.0f,0.0f,
            0.0f,1.0f,0.0f
          );

    glPushMatrix();
        glRotatef(0.001f * c, 0.0f, 1.0f, 0.0f);
        glColor3f(0.8f, 0.7f, 0.01f);
        glutSolidCube(1.0);
    glPopMatrix();

    glPushMatrix();
        glRotatef(0.1f * c, 0.0f, 1.0f, 0.0f);
        glTranslatef(2.0f, 0.0f, 0.0f);
        glPushMatrix();
            glRotatef(0.15f * c, 0.0f, 1.0f, 0.0f);
            glTranslatef(0.5f, 0.0f, 0.0f);
            glRotatef(0.15f * c, 0.0f, 1.0f, 0.0f);
            glColor3f(0.4f, 0.4f, 0.4f);
            glutSolidCube(0.1);

        glPopMatrix();
        glRotatef(0.5f * c, 0.0f, 1.0f, 0.0f);
        glColor3f(0.3f, 0.7f, 0.9f);
        glutSolidCube(0.3);

    glPopMatrix();

    glPushMatrix();
        glRotatef(120.0f, 0.0f, 1.0f, 0.0f);
        glRotatef(0.07f * c, 0.0f, 1.0f, 0.0f);
        glTranslatef(3.0f, 0.0f, 0.0f);
        glPushMatrix();
            glRotatef(60.0f, 0.0f, 0.0f, 1.0f);
            glRotatef(0.12f * c, 0.0f, 1.0f, 0.0f);
            glTranslatef(0.5f, 0.0f, 0.0f);
            glRotatef(0.12f * c, 0.0f, 1.0f, 0.0f);
            glColor3f(0.4f, 0.4f, 0.4f);
            glutSolidCube(0.11);

        glPopMatrix();
        glRotatef(0.2f * c, 0.0f, 1.0f, 0.0f);
        glColor3f(0.5f, 0.01f, 0.01f);
        glutSolidCube(0.32);

    glPopMatrix();
    glutSwapBuffers();
}

void idle(void)
{
    c=c+1;
    glutPostRedisplay();
}

void init(void)
{
    glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
    glEnable(GL_DEPTH_TEST);
}

int main(int argc, char **argv)
{
    glutInit(&argc, argv);
    height=H;
    width=W;
    glutInitDisplayMode(GLUT_RGBA|GLUT_DOUBLE|GLUT_DEPTH);

    glutInitWindowSize(width,height);
    glutCreateWindow("opengl_2");
    glutDisplayFunc(display);
    glutReshapeFunc(reshape);
    glutIdleFunc(idle);
    init();

    glutMainLoop();
}