Happy My Life

//Add array iteration method
Array.prototype.each = function(f) {
    var len = this.length;
    for ( var i = 0; i < len; i++) f(this[i]);
};
 
//Initializes 3D rendering
function initRendering() {
    "DEPTH_TEST COLOR_MATERIAL LIGHTING LIGHT0 NORMALIZE COLOR_MATERIAL"
        .split(" ").each(function(elem) {
        Gl.Enable(Gl[elem]);
    });
}
 
//angle variable
var angle = 0;
 
//Draws the 3D scene
function drawScene() {
    //Set global color and drawing properties
    Gl.Clear(Gl.COLOR_BUFFER_BIT | Gl.DEPTH_BUFFER_BIT);
    Gl.MatrixMode(Gl.MODELVIEW);
    Gl.LoadIdentity();
    Gl.Translatef(0.0, 0.0, -5.0);
    //Set diffuse and positioned lights
    Gl.LightModelfv(Gl.LIGHT_MODEL_AMBIENT, [0.3, 0.3, 0.3, 1.0]);
    Gl.Lightfv(Gl.LIGHT0, Gl.DIFFUSE, [0.4, 0.4, 0.4, 1.0]);
    Gl.Lightfv(Gl.LIGHT0, Gl.POSITION, [5.0, 5.0, 5.0, 1.0]);
    //Rotate and plot Icosahedron
    Gl.Rotatef(angle, 1.0, 1.0, 1.0);
    Gl.Color3f(0.5, 0.0, 0.8);
    Glut.SolidIcosahedron(2.5);
    //Render
    Glut.SwapBuffers();
}
 
(function() {
    //Initialize Glut
    Glut.Init();
    Glut.InitDisplayMode(Glut.DOUBLE | Glut.RGB | Glut.DEPTH);
    Glut.InitWindowSize(400, 400); //Set the window size
    //Create the window
    Glut.CreateWindow("OpenGL on V8 baby!");
    initRendering();
    //Set drawing callback
    Glut.DisplayFunc(drawScene);
    //Set resize window callback
    Glut.ReshapeFunc(function(w, h) {
        var gl = { 'Viewport': [0, 0, w, h], 'MatrixMode': [Gl.PROJECTION], 'LoadIdentity': [] };
        for (var i in gl) Gl[i].apply(this, gl[i]);
        Glu.Perspective(45.0, w / h, 1.0, 200.0);
    });
    //Set timeout callback
    Glut.TimerFunc(25, function() {
        angle += 2.0;
        if (angle > 360) angle -= 360;
        Glut.PostRedisplay();
        Glut.TimerFunc(25, arguments.callee, 0);
    }, 0);
    //Start the main loop.
    Glut.MainLoop();
})();