javascript
/
three.js
mirror de https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js canvas - materials</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<style>
			body {
				font-family: Monospace;
				background-color: #202020;
				margin: 0px;
				overflow: hidden;
			}
		</style>
	</head>
	<body>

		<script src="../build/three.js"></script>

		<script src="js/renderers/Projector.js"></script>
		<script src="js/renderers/CanvasRenderer.js"></script>

		<script src="js/libs/stats.min.js"></script>

		<script>

			var container, stats;

			var camera, scene, renderer, objects;
			var pointLight;

			init();
			animate();

			function init() {

				container = document.createElement('div');
				document.body.appendChild(container);

				camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 2000 );
				camera.position.set( 0, 200, 800 );

				scene = new THREE.Scene();

				// Grid

				var size = 500, step = 100;

				var geometry = new THREE.Geometry();

				for ( var i = - size; i <= size; i += step ) {

					geometry.vertices.push( new THREE.Vector3( - size, - 120, i ) );
					geometry.vertices.push( new THREE.Vector3(   size, - 120, i ) );

					geometry.vertices.push( new THREE.Vector3( i, - 120, - size ) );
					geometry.vertices.push( new THREE.Vector3( i, - 120,   size ) );

				}

				var material = new THREE.LineBasicMaterial( { color: 0xffffff, opacity: 0.2 } );

				var line = new THREE.LineSegments( geometry, material );
				scene.add( line );

				// Spheres

				var geometry = new THREE.SphereGeometry( 100, 14, 7 );

				var textureLoader = new THREE.TextureLoader();

				var earthTexture = textureLoader.load( 'textures/land_ocean_ice_cloud_2048.jpg' );

				var envMap = textureLoader.load( 'textures/envmap.png' );
				envMap.mapping = THREE.SphericalReflectionMapping;

				var materials = [

					new THREE.MeshBasicMaterial( { color: 0x00ffff, wireframe: true, side: THREE.DoubleSide } ),
					new THREE.MeshBasicMaterial( { color: 0xff0000, blending: THREE.AdditiveBlending } ),
					new THREE.MeshLambertMaterial( { color: 0xffffff, overdraw: 0.5 } ),
					new THREE.MeshLambertMaterial( { color: 0xffffff, overdraw: 0.5 } ),
					new THREE.MeshNormalMaterial( { overdraw: 0.5 } ),
					new THREE.MeshBasicMaterial( { map: earthTexture } ),
					new THREE.MeshBasicMaterial( { envMap: envMap, overdraw: 0.5 } )

				];

				for ( var i = 0, l = geometry.faces.length; i < l; i ++ ) {

					var face = geometry.faces[ i ];
					if ( Math.random() > 0.5 ) face.materialIndex = Math.floor( Math.random() * materials.length );

				}

				materials.push( new THREE.MultiMaterial( materials ) );

				objects = [];

				for ( var i = 0, l = materials.length; i < l; i ++ ) {

					var sphere = new THREE.Mesh( geometry, materials[ i ] );

					sphere.position.x = ( i % 5 ) * 200 - 400;
					sphere.position.z = Math.floor( i / 5 ) * 200 - 200;

					sphere.rotation.x = Math.random() * 200 - 100;
					sphere.rotation.y = Math.random() * 200 - 100;
					sphere.rotation.z = Math.random() * 200 - 100;

					objects.push( sphere );

					scene.add( sphere );

				}

				var PI2 = Math.PI * 2;
				var program = function ( context ) {

					context.beginPath();
					context.arc( 0, 0, 0.5, 0, PI2, true );
					context.fill();

				};

				// Lights

				scene.add( new THREE.AmbientLight( Math.random() * 0x202020 ) );

				var directionalLight = new THREE.DirectionalLight( Math.random() * 0xffffff );
				directionalLight.position.x = Math.random() - 0.5;
				directionalLight.position.y = Math.random() - 0.5;
				directionalLight.position.z = Math.random() - 0.5;
				directionalLight.position.normalize();
				scene.add( directionalLight );

				pointLight = new THREE.PointLight( 0xffffff, 1 );
				scene.add( pointLight );

				var sprite = new THREE.Sprite( new THREE.SpriteCanvasMaterial( { color: 0xffffff, program: program } ) );
				sprite.scale.set( 8, 8, 8 );
				pointLight.add( sprite );

				renderer = new THREE.CanvasRenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				container.appendChild( renderer.domElement );

				var debugCanvas = document.createElement( 'canvas' );
				debugCanvas.width = 512;
				debugCanvas.height = 512;
				debugCanvas.style.position = 'absolute';
				debugCanvas.style.top = '0px';
				debugCanvas.style.left = '0px';

				container.appendChild( debugCanvas );

				debugContext = debugCanvas.getContext( '2d' );
				debugContext.setTransform( 1, 0, 0, 1, 256, 256 );
				debugContext.strokeStyle = '#000000';

				stats = new Stats();
				container.appendChild(stats.dom);

				//

				window.addEventListener( 'resize', onWindowResize, false );

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			function loadImage( path ) {

				var image = document.createElement( 'img' );
				var texture = new THREE.Texture( image, THREE.UVMapping );

				image.onload = function () { texture.needsUpdate = true; };
				image.src = path;

				return texture;

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				var timer = Date.now() * 0.0001;

				camera.position.x = Math.cos( timer ) * 1000;
				camera.position.z = Math.sin( timer ) * 1000;
				camera.lookAt( scene.position );

				for ( var i = 0, l = objects.length; i < l; i++ ) {

					var object = objects[ i ];

					object.rotation.x += 0.01;
					object.rotation.y += 0.005;

				}

				pointLight.position.x = Math.sin( timer * 7 ) * 300;
				pointLight.position.y = Math.cos( timer * 5 ) * 400;
				pointLight.position.z = Math.cos( timer * 3 ) * 300;

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>