void display (void)
{
glClearColor (0.0, 0.0, 0.0, 0.0);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glShadeModel (GL_SMOOTH);
//glPolygonMode( GL_FRONT_AND_BACK, GL_LINE ); // WIREFRAME
displayFog();
glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
glLightfv(GL_LIGHT0, GL_POSITION, light_position);
glMatrixMode (GL_MODELVIEW);
glLoadIdentity();
camera.update();
glDisable(GL_CULL_FACE);
skybox.display();
glEnable(GL_CULL_FACE);
table.display();
drawShadows();
mainGear.display();
powerGear.display();
smallMiddleGear.display();
bigPowerGear.display();
sideGear.display();
sidePole.display();
powerPole.display();
powerPole2.display();
powerPole3.display();
powerPole4.display();
sun.display();
baseBox.display();
coverBox.display();
coverBox2.display();
coverBox3.display();
coverBox4.display();
moonCylinder.display();
drawPlanets();
neptunePole.display();
uranusPole.display();
saturnPole.display();
jupiterPole.display();
marsPole.display();
earthPole.display();
venusPole.display();
mercuryPole.display();
saturnRingPole.display();
glutSwapBuffers();
}
void display(void)
{
planet.display();
upPole.display();
outPole.display();
}