midas
/
threejs-obj-space


			
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - materials - video</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<link type="text/css" rel="stylesheet" href="main.css">
	</head>
	<body>

		<div id="overlay">
			<div>
				<button id="startButton">Click to Play</button>
				<p>Video playback with audio requires user interaction.</p>
			</div>
		</div>
		<div id="container"></div>

		<div id="info">
			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl video demo<br/>
			playing <a href="http://durian.blender.org/" target="_blank" rel="noopener">sintel</a> trailer
		</div>

		<video id="video" loop crossOrigin="anonymous" playsinline style="display:none">
			<source src="textures/sintel.ogv" type='video/ogg; codecs="theora, vorbis"'>
			<source src="textures/sintel.mp4" type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"'>
		</video>

		<script type="module">

			import * as THREE from '../build/three.module.js';

			import { EffectComposer } from './jsm/postprocessing/EffectComposer.js';
			import { RenderPass } from './jsm/postprocessing/RenderPass.js';
			import { ShaderPass } from './jsm/postprocessing/ShaderPass.js';
			import { BloomPass } from './jsm/postprocessing/BloomPass.js';
			import { CopyShader } from './jsm/shaders/CopyShader.js';

			var container;

			var camera, scene, renderer;

			var video, texture, material, mesh;

			var composer;

			var mouseX = 0;
			var mouseY = 0;

			var windowHalfX = window.innerWidth / 2;
			var windowHalfY = window.innerHeight / 2;

			var cube_count,

				meshes = [],
				materials = [],

				xgrid = 20,
				ygrid = 10;

			var startButton = document.getElementById( 'startButton' );
			startButton.addEventListener( 'click', function () {

				init();
				animate();

			}, false );

			function init() {

				var overlay = document.getElementById( 'overlay' );
				overlay.remove();

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

				camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 10000 );
				camera.position.z = 500;

				scene = new THREE.Scene();

				var light = new THREE.DirectionalLight( 0xffffff );
				light.position.set( 0.5, 1, 1 ).normalize();
				scene.add( light );

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

				video = document.getElementById( 'video' );
				video.play();

				texture = new THREE.VideoTexture( video );

				//

				var i, j, ux, uy, ox, oy,
					geometry,
					xsize, ysize;

				ux = 1 / xgrid;
				uy = 1 / ygrid;

				xsize = 480 / xgrid;
				ysize = 204 / ygrid;

				var parameters = { color: 0xffffff, map: texture };

				cube_count = 0;

				for ( i = 0; i < xgrid; i ++ )
					for ( j = 0; j < ygrid; j ++ ) {

						ox = i;
						oy = j;

						geometry = new THREE.BoxBufferGeometry( xsize, ysize, xsize );

						change_uvs( geometry, ux, uy, ox, oy );

						materials[ cube_count ] = new THREE.MeshLambertMaterial( parameters );

						material = materials[ cube_count ];

						material.hue = i / xgrid;
						material.saturation = 1 - j / ygrid;

						material.color.setHSL( material.hue, material.saturation, 0.5 );

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

						mesh.position.x = ( i - xgrid / 2 ) * xsize;
						mesh.position.y = ( j - ygrid / 2 ) * ysize;
						mesh.position.z = 0;

						mesh.scale.x = mesh.scale.y = mesh.scale.z = 1;

						scene.add( mesh );

						mesh.dx = 0.001 * ( 0.5 - Math.random() );
						mesh.dy = 0.001 * ( 0.5 - Math.random() );

						meshes[ cube_count ] = mesh;

						cube_count += 1;

					}

				renderer.autoClear = false;

				document.addEventListener( 'mousemove', onDocumentMouseMove, false );

				// postprocessing

				var renderModel = new RenderPass( scene, camera );
				var effectBloom = new BloomPass( 1.3 );
				var effectCopy = new ShaderPass( CopyShader );

				composer = new EffectComposer( renderer );

				composer.addPass( renderModel );
				composer.addPass( effectBloom );
				composer.addPass( effectCopy );

				//

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

			}

			function onWindowResize() {

				windowHalfX = window.innerWidth / 2;
				windowHalfY = window.innerHeight / 2;

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

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

			}

			function change_uvs( geometry, unitx, unity, offsetx, offsety ) {

				var uvs = geometry.attributes.uv.array;

				for ( var i = 0; i < uvs.length; i += 2 ) {

					uvs[ i ] = ( uvs[ i ] + offsetx ) * unitx;
					uvs[ i + 1 ] = ( uvs[ i + 1 ] + offsety ) * unity;

				}

			}


			function onDocumentMouseMove( event ) {

				mouseX = ( event.clientX - windowHalfX );
				mouseY = ( event.clientY - windowHalfY ) * 0.3;

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();

			}

			var h, counter = 1;

			function render() {

				var time = Date.now() * 0.00005;

				camera.position.x += ( mouseX - camera.position.x ) * 0.05;
				camera.position.y += ( - mouseY - camera.position.y ) * 0.05;

				camera.lookAt( scene.position );

				for ( var i = 0; i < cube_count; i ++ ) {

					material = materials[ i ];

					h = ( 360 * ( material.hue + time ) % 360 ) / 360;
					material.color.setHSL( h, material.saturation, 0.5 );

				}

				if ( counter % 1000 > 200 ) {

					for ( var i = 0; i < cube_count; i ++ ) {

						mesh = meshes[ i ];

						mesh.rotation.x += 10 * mesh.dx;
						mesh.rotation.y += 10 * mesh.dy;

						mesh.position.x += 200 * mesh.dx;
						mesh.position.y += 200 * mesh.dy;
						mesh.position.z += 400 * mesh.dx;

					}

				}

				if ( counter % 1000 === 0 ) {

					for ( var i = 0; i < cube_count; i ++ ) {

						mesh = meshes[ i ];

						mesh.dx *= - 1;
						mesh.dy *= - 1;

					}

				}

				counter ++;

				renderer.clear();
				composer.render();

			}


		</script>

	</body>
</html>