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


			
				
					
						
						
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							<!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;
			}

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

		</style>
	</head>
	<body>

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

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

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

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

		<script>

			if ( WEBGL.isWebGLAvailable() === false ) {

				document.body.appendChild( WEBGL.getWebGLErrorMessage() );

			}

			var camera, controls, scene, renderer, stats;

			var mesh, texture, geometry, material, clock;

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

			init();
			animate();

			function init() {

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

				clock = new THREE.Clock();

				controls = new THREE.FirstPersonControls( camera );

				controls.movementSpeed = 500;
				controls.lookSpeed = 0.1;

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

				geometry = new THREE.PlaneBufferGeometry( 20000, 20000, worldWidth - 1, worldDepth - 1 );
				geometry.rotateX( - Math.PI / 2 );

				var position = geometry.attributes.position;
				position.dynamic = true;

				for ( var i = 0; i < position.count; i ++ ) {

					var y = 35 * Math.sin( i / 2 );
					position.setY( i, y );

				}

				var texture = new THREE.TextureLoader().load( '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( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				document.body.appendChild( renderer.domElement );

				stats = new Stats();
				document.body.appendChild( stats.dom );

				//

				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();
				var time = clock.getElapsedTime() * 10;

				var position = geometry.attributes.position;

				for ( var i = 0; i < position.count; i ++ ) {

					var y = 35 * Math.sin( i / 5 + ( time + i ) / 7 );
					position.setY( i, y );

				}

				position.needsUpdate = true;

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

			}

		</script>

	</body>
</html>