Cara Membuat Matahari dan Planet dengan OpenGL

Syntax :
#include <GL/glut.h>

static int year = 0, day = 0;

void init(void)
{
     glClearColor (0.0, 0.0, 0.0, 0.0);
     glShadeModel (GL_FLAT);
}

void display(void)
{    
     glClear (GL_COLOR_BUFFER_BIT);
     glColor3f (1.0, 1.0, 0.0);
     glPushMatrix();
     glutWireSphere(1.0, 40, 16); /* gambar matahari */
     glRotatef ((GLfloat) year, 0.0, 1.0, 0.0);
     glTranslatef (2.0, 0.0, 0.0);
     glRotatef ((GLfloat) day, 0.0, 1.0, 0.0);
    
     glColor3f (1.0, 0.4, 0.3);
     glutWireSphere(0.2, 50, 20); /* gambar planet kecil */
    
        glRotated(80.5,9,6,0);
        glutWireTorus(0.3,0.4,1,30);
    glPopMatrix();
        
    /*glPushMatrix();
        glTranslated(0,0,-6);
        glRotated(95.0,12.0,0,0);
        glRotated(a,0,0,1);
        glutWireTorus(5,0,1,50);
    glPopMatrix();*/
    
     glutSwapBuffers();
}

void reshape (int w, int h)
{
     glViewport (0, 0, (GLsizei) w, (GLsizei) h);
     glMatrixMode (GL_PROJECTION);
     glLoadIdentity ();
     gluPerspective(60.0, (GLfloat) w/(GLfloat) h, 1.0, 20.0);
     glMatrixMode(GL_MODELVIEW);
     glLoadIdentity();
     gluLookAt (0.0, 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
}

void keyboard (unsigned char key, int x, int y)
{
     switch (key) {
       case 'd':
            day = (day + 10) % 360;
            glutPostRedisplay();
            break;
       case 'D':
            day = (day - 10) % 360;
            glutPostRedisplay();
            break;
       case 'y':
            year = (year + 5) % 360;
            glutPostRedisplay();
            break;
       case 'Y':
            year = (year - 5) % 360;
            glutPostRedisplay();
            break;
       case 27:
            exit(0);
            break;
       default:
       break;
     }
}
      
int main(int argc, char** argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB);
    glutInitWindowSize (500, 500);
    glutInitWindowPosition (100, 100);
    glutCreateWindow (argv[0]);
    init ();
    glutDisplayFunc(display);
    glutReshapeFunc(reshape);
    glutKeyboardFunc(keyboard);
    glutMainLoop();
    return 0;
}



Run :