examples/webgl_geometry_dynamic.html

<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - geometry - dynamic</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 {
				color: #61443e;
				font-family:Monospace;
				font-size:13px;
				text-align:center;

				background-color: #aaccff;
				margin: 0px;
				overflow: hidden;
			}

			#info {
				color: #ffffff;
				position: absolute;
				top: 0px; width: 100%;
				padding: 5px;
			}

			a {

				color: yellow;
			}

			#oldie {
				background:rgb(0,0,50) !important;
				color:#fff !important;
			}

		</style>
	</head>
	<body>

		<div id="container"></div>
		<div id="info"><a href="http://threejs.org" target="_blank">three.js</a> - dynamic geometry demo - webgl<br />(left click: forward, right click: backward)</div>

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

		<script src="js/controls/FirstPersonControls.js"></script>

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

		<script>

			if ( ! Detector.webgl ) {

				Detector.addGetWebGLMessage();
				document.getElementById( 'container' ).innerHTML = "";

			}

			var container, stats;

			var camera, controls, scene, renderer;

			var mesh, texture, geometry, material;

			var worldWidth = 128, worldDepth = 128,
			worldHalfWidth = worldWidth / 2, worldHalfDepth = worldDepth / 2;

			var clock = new THREE.Clock();

			init();
			animate();

			function init() {

				container = document.getElementById( 'container' );

				camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 20000 );
				camera.position.y = 200;

				controls = new THREE.FirstPersonControls( camera );

				controls.movementSpeed = 500;
				controls.lookSpeed = 0.1

				scene = new THREE.Scene();
				scene.fog = new THREE.FogExp2( 0xaaccff, 0.0007 );

				geometry = new THREE.PlaneGeometry( 20000, 20000, worldWidth - 1, worldDepth - 1 );
				geometry.applyMatrix( new THREE.Matrix4().makeRotationX( - Math.PI / 2 ) );
				geometry.dynamic = true;

				var i, j, il, jl;

				for ( i = 0, il = geometry.vertices.length; i < il; i ++ ) {

					geometry.vertices[ i ].y = 35 * Math.sin( i/2 );

				}


				//console.log( "triangles: " + geometry.faces.length * 2 + " faces: " + geometry.faces.length + " vertices: " + geometry.vertices.length );

				geometry.computeFaceNormals();
				geometry.computeVertexNormals();

				var texture = THREE.ImageUtils.loadTexture( "textures/water.jpg" );
				texture.wrapS = texture.wrapT = THREE.RepeatWrapping;
				texture.repeat.set( 5, 5 );

				material = new THREE.MeshBasicMaterial( { color: 0x0044ff, map: texture } );

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

				renderer = new THREE.WebGLRenderer( { clearColor: 0xaaccff, clearAlpha: 1 } );
				renderer.setSize( window.innerWidth, window.innerHeight );

				container.innerHTML = "";

				container.appendChild( renderer.domElement );

				stats = new Stats();
				stats.domElement.style.position = 'absolute';
				stats.domElement.style.top = '0px';
				container.appendChild( stats.domElement );

				//

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

			}

			function onWindowResize() {

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

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

				controls.handleResize();

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				var delta = clock.getDelta(),
					time = clock.getElapsedTime() * 10;

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

					geometry.vertices[ i ].y = 35 * Math.sin( i / 5 + ( time + i ) / 7 );

				}

				//geometry.computeFaceNormals();
				//geometry.computeVertexNormals();

				mesh.geometry.verticesNeedUpdate = true;
				//mesh.geometry.normalsNeedUpdate = true;

				controls.update( delta );
				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>