WebGL- 3D Sphere and Partial Spherical Objects

Written by @m_k_amin 17 July 2013

One of 3D basic shapes is sphere. HTML5 WebGL by using Three.js and Sim.js libraries become a powerful tool for creating such a shape. In this example we have made 5 incomplete spheres and a complete one. We have used two lights and an orthogonal camera to have a better perspective of the scene. Also by rotating the 3D spheres in z an x axes, you can see all parts of them. Our used libraries are found here: http://html5freecode.com/libs/libs.zip

Code Snippet:

                                                
                                                <!-- this script is provided by https://www.html5freecode.com coded by: Kerixa Inc. -->
<!-- This Script is from www.html5freecode.com, Coded by: Kerixa Inc-->

<!DOCTYPE html>

<html>

<head>

<title>Welcome to WebGL</title>

<script src="http://www.html5freecode.com/libs/Three.js"></script>

<script src="http://www.html5freecode.com/libs/jquery-1.6.4.js"></script>

<script src="http://www.html5freecode.com/libs/jquery.mousewheel.js"></script>

<script src="http://www.html5freecode.com/libs/RequestAnimationFrame.js"></script>

<script src="http://www.html5freecode.com/libs/sim.js"></script>

<script>

var renderer = null, scene = null,camera = null,mesh = null;

function onLoad(){

	var container = document.getElementById("container");

	var app = new MyApp();

	app.init({ container: container });

	app.run();

}

MyApp = function(){

	Sim.App.call(this);}

MyApp.prototype = new Sim.App();

MyApp.prototype.init = function(param){

	Sim.App.prototype.init.call(this, param);

	

    // Create Objects and Load them Here:   

    var cube = new Cube();

    cube.init();

    this.addObject(cube);



	sph= new Array()

	for (i=1; i<=6; i++){

	    sph[i]= new Sphere();

	    sph[i].init(i);

	    this.addObject(sph[i]);

	}

	

    var light= new Light();

    light.init(-20,6,1);

    this.addObject(light);

    var light2= new Light();

    light2.init(40,6,1);

    this.addObject(light2);



    var k= 30;



        this.camera= new THREE.OrthographicCamera( container.offsetWidth/ - k, container.offsetWidth/ k, container.offsetHeight/ k, container.offsetHeight/ - k, -500, 2000 );

  	this.camera.position.y= 2;

  	this.camera.position.z= 3;

	var a = new THREE.Vector3(0 , 0.5, 0 );  	

  	this.camera.lookAt(a);



}

//Objects Nececssary Definitions:

Cube = function(){

	Sim.Object.call(this);}

Cube.prototype = new Sim.Object();

Sphere = function(){

	Sim.Object.call(this);}

Sphere.prototype = new Sim.Object();

Light = function(){

	Sim.Object.call(this);}

Light.prototype = new Sim.Object();



//Define Objects Specifications:

Cube.prototype.init = function(){

    var map = "http://www.html5freecode.com/files/webgl-texture-green.jpg";

    var geometry = new THREE.CubeGeometry(40, 1, 40);

    var texture = THREE.ImageUtils.loadTexture(map);

    var material = new THREE.MeshPhongMaterial( { map: texture } );

    var mesh = new THREE.Mesh( geometry, material ); 

    mesh.position.set(0,-1,0)

    this.setObject3D(mesh);

}

Sphere.prototype.init = function(ind){

    var map = "http://www.html5freecode.com/files/webgl-texture-wood.jpg";

    var geometry = new THREE.SphereGeometry(1.5, 32, 32, ind/3*Math.PI, 2*Math.PI, ind/6*Math.PI, Math.PI);

    var texture = THREE.ImageUtils.loadTexture(map);

    var material = new THREE.MeshPhongMaterial( { map: texture } );

    var mesh = new THREE.Mesh( geometry, material ); 

    mesh.position.set(ind*4-13.5,1,-4)

    this.setObject3D(mesh);

}

Light.prototype.init = function(x,y,z){

	var lit = new THREE.PointLight( 0xffffff, 1.2);

	lit.position.set(x, y, z);

    this.setObject3D(lit);    

}



//The Changes of the Object in Each Scene:

Sphere.prototype.update = function(){



	this.object3D.rotation.z += 0.01;

	this.object3D.rotation.x += 0.01;



}

</script>

</head>

<body onLoad="onLoad();" style="">

	<div style="text-align: left"><font face="Tahoma"><a target="_blank" href="https://html5freecode.com"><span style="font-size: 8pt; text-decoration: none">HTML5 Free Code</span></a></font></div>

<div id="container" style="width:400px; height:80%; overflow:hidden; position:absolute; background-color:#000000"></div>



</body>

</html><a target='_blank' href='https://www.html5freecode.com' style='font-size: 8pt; text-decoration: none'>Html5 Free Codes</a>

Example:

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