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index.html
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<html>
<script src="./js/Three.js"></script>
<script src="./js/OrbitControls.js"></script>
<script>
function createMyCustomGeometry(){
return new THREE.SphereGeometry(50,20,20);
}
</script>
<script id ="vertex-shader" type="x-shader/x-vertex">
varying vec2 vUv;
void main(){
vUv = uv;
gl_Position = projectionMatrix * viewMatrix * modelMatrix * vec4(position, 1.0);
}
</script>
<script id ="fragment-shader" type="x-shader/x-fragment">
uniform sampler2D texture;
uniform float time;
varying vec2 vUv;
void main(){
float tr = cos(time)*0.5 + 0.5;
vec4 texel = texture2D( texture, vUv);
gl_FragColor = vec4(texel.rgb, tr);
}
</script>
<script >
var UNIFORMS = {
"time": {type:"f", value:0.0},
"texture":{type:"t", value: THREE.ImageUtils.loadTexture( "textures/earth.png" )}
}; // place all needed uniforms here;
function getUniformUpdater(){
var totalTime = 0;
return function(dt){
totalTime += dt;
UNIFORMS.time.value = totalTime;
// Place here anything, that must be updated;
}
// This function allows to change uniform values in array above;
}
function startAnimation(renderer, camera, scene){
var updater = getUniformUpdater();
function animate( ) {
requestAnimationFrame( animate );
render();
}
var CT = Date.now();
function render() {
var t = Date.now();
var dt = t - CT;
updater(dt/1000);
CT = t;
renderer.render( scene, camera );
}
animate();
}
function start(){
var geometry = createMyCustomGeometry();
var material = new THREE.ShaderMaterial({
vertexShader: document.getElementById("vertex-shader").innerText,
fragmentShader: document.getElementById("fragment-shader").innerText,
uniforms: UNIFORMS,
transparent:true
});
var renderer = new THREE.WebGLRenderer({ antialias:true, alpha: true });
var container = document.getElementById( 'container' );
renderer.setSize(window.innerWidth, window.innerHeight);
var camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 3000 );
camera.position.y = 500 ;
camera.position.x = 500 ;
camera.position.z = 200;
camera.lookAt(0,0,0);
scene = new THREE.Scene();
controls = new THREE.OrbitControls( camera, renderer.domElement );
// LIGHT
var light = new THREE.PointLight(0xffffff);
light.position.set(0,250,0);
scene.add(light);
// FLOOR
var floorTexture = new THREE.ImageUtils.loadTexture( 'textures/checkerboard.jpg' );
floorTexture.wrapS = floorTexture.wrapT = THREE.RepeatWrapping;
floorTexture.repeat.set( 10, 10 );
var floorMaterial = new THREE.MeshBasicMaterial( { map: floorTexture, side: THREE.DoubleSide } );
var floorGeometry = new THREE.PlaneGeometry(1000, 1000, 10, 10);
var floor = new THREE.Mesh(floorGeometry, floorMaterial);
floor.position.y = -0.5;
floor.rotation.x = Math.PI / 2;
scene.add(floor);
// SKYBOX/FOG
var skyBoxGeometry = new THREE.BoxGeometry( 10000, 10000, 10000 );
var skyBoxMaterial = new THREE.MeshBasicMaterial( { color: 0x9999ff, side: THREE.BackSide } );
var skyBox = new THREE.Mesh( skyBoxGeometry, skyBoxMaterial );
scene.add(skyBox);
scene.fog = new THREE.FogExp2( 0x9999ff, 0.00025 );
//ACTUAL Mesh
var mesh = new THREE.Mesh(geometry, material);
scene.add(mesh);
container.appendChild( renderer.domElement );
startAnimation(renderer, camera, scene);
}
</script>
<style>
body{
width:100%;
height:100%;
margin:0;
padding:0;
}
#container{
width:100%;
height:100%;
}
</style>
<body onload="start();">
<div id="container">
</div>
</body>
<html>