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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - multiple renderers</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">
- <style>
- body {
- background-color: #fff;
- color: #444;
- }
- a {
- color: #08f;
- }
- </style>
- </head>
- <body>
- <div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgl - multiple renderers</div>
- <script type="module">
- import * as THREE from '../build/three.module.js';
- var camera, scene, renderer1, renderer2;
- var mesh1, mesh2, mesh3;
- var color = new THREE.Color();
- init();
- animate();
- function init() {
- camera = new THREE.PerspectiveCamera( 20, window.innerWidth / ( window.innerHeight / 2 ), 1, 10000 );
- scene = new THREE.Scene();
- scene.background = new THREE.Color( 0xffffff );
- var light = new THREE.DirectionalLight( 0xffffff );
- light.position.set( 0, 0, 1 );
- scene.add( light );
- var light = new THREE.DirectionalLight( 0xffff00, 0.75 );
- light.position.set( 0, 0, - 1 );
- scene.add( light );
- // shadow
- var canvas = document.createElement( 'canvas' );
- canvas.width = 128;
- canvas.height = 128;
- var context = canvas.getContext( '2d' );
- var gradient = context.createRadialGradient( canvas.width / 2, canvas.height / 2, 0, canvas.width / 2, canvas.height / 2, canvas.width / 2 );
- gradient.addColorStop( 0.1, 'rgba(210,210,210,1)' );
- gradient.addColorStop( 1, 'rgba(255,255,255,1)' );
- context.fillStyle = gradient;
- context.fillRect( 0, 0, canvas.width, canvas.height );
- var shadowTexture = new THREE.CanvasTexture( canvas );
- var shadowMaterial = new THREE.MeshBasicMaterial( { map: shadowTexture } );
- var shadowGeo = new THREE.PlaneBufferGeometry( 300, 300, 1, 1 );
- var shadowMesh;
- shadowMesh = new THREE.Mesh( shadowGeo, shadowMaterial );
- shadowMesh.position.y = - 250;
- shadowMesh.rotation.x = - Math.PI / 2;
- scene.add( shadowMesh );
- shadowMesh = new THREE.Mesh( shadowGeo, shadowMaterial );
- shadowMesh.position.x = - 400;
- shadowMesh.position.y = - 250;
- shadowMesh.rotation.x = - Math.PI / 2;
- scene.add( shadowMesh );
- shadowMesh = new THREE.Mesh( shadowGeo, shadowMaterial );
- shadowMesh.position.x = 400;
- shadowMesh.position.y = - 250;
- shadowMesh.rotation.x = - Math.PI / 2;
- scene.add( shadowMesh );
- var radius = 200;
- var geometry1 = new THREE.IcosahedronBufferGeometry( radius, 1 );
- var count = geometry1.attributes.position.count;
- geometry1.setAttribute( 'color', new THREE.BufferAttribute( new Float32Array( count * 3 ), 3 ) );
- var geometry2 = geometry1.clone();
- var geometry3 = geometry1.clone();
- var positions1 = geometry1.attributes.position;
- var positions2 = geometry2.attributes.position;
- var positions3 = geometry3.attributes.position;
- var colors1 = geometry1.attributes.color;
- var colors2 = geometry2.attributes.color;
- var colors3 = geometry3.attributes.color;
- for ( var i = 0; i < count; i ++ ) {
- color.setHSL( ( positions1.getY( i ) / radius + 1 ) / 2, 1.0, 0.5 );
- colors1.setXYZ( i, color.r, color.g, color.b );
- color.setHSL( 0, ( positions2.getY( i ) / radius + 1 ) / 2, 0.5 );
- colors2.setXYZ( i, color.r, color.g, color.b );
- color.setRGB( 1, 0.8 - ( positions3.getY( i ) / radius + 1 ) / 2, 0 );
- colors3.setXYZ( i, color.r, color.g, color.b );
- }
- var material = new THREE.MeshPhongMaterial( {
- color: 0xffffff,
- flatShading: true,
- vertexColors: THREE.VertexColors,
- shininess: 0
- } );
- var wireframeMaterial = new THREE.MeshBasicMaterial( { color: 0x000000, wireframe: true, transparent: true } );
- mesh1 = new THREE.Mesh( geometry1, material );
- mesh1.position.x = - 400;
- mesh1.rotation.x = - 1.87;
- scene.add( mesh1 );
- var wireframe = new THREE.Mesh( geometry1, wireframeMaterial );
- mesh1.add( wireframe );
- mesh2 = new THREE.Mesh( geometry2, material );
- mesh2.position.x = 400;
- scene.add( mesh2 );
- var wireframe = new THREE.Mesh( geometry2, wireframeMaterial );
- mesh2.add( wireframe );
- mesh3 = new THREE.Mesh( geometry3, material );
- scene.add( mesh3 );
- var wireframe = new THREE.Mesh( geometry3, wireframeMaterial );
- mesh3.add( wireframe );
- //
- renderer1 = new THREE.WebGLRenderer( { antialias: true } );
- renderer1.setPixelRatio( window.devicePixelRatio );
- renderer1.setSize( window.innerWidth, window.innerHeight / 2 );
- document.body.appendChild( renderer1.domElement );
- renderer2 = new THREE.WebGLRenderer();
- renderer2.setPixelRatio( window.devicePixelRatio );
- renderer2.setSize( window.innerWidth, window.innerHeight / 2 );
- document.body.appendChild( renderer2.domElement );
- }
- function animate() {
- requestAnimationFrame( animate );
- // update scene
- mesh1.rotation.z += Math.PI / 500;
- mesh2.rotation.z += Math.PI / 500;
- mesh3.rotation.z += Math.PI / 500;
- var position = new THREE.Vector3();
- var color = new THREE.Color();
- var time = performance.now() / 500;
- var positions = mesh3.geometry.attributes.position;
- var colors = mesh3.geometry.attributes.color;
- for ( var i = 0, l = positions.count; i < l; i ++ ) {
- position.fromArray( positions.array, i * 3 );
- color.setRGB( 1, Math.sin( time + position.x ), Math.cos( time * 2.123 + position.x ) );
- colors.setXYZ( i, color.r, color.g, color.b );
- }
- colors.needsUpdate = true;
- //
- var time = performance.now() / 2000;
- camera.position.x = Math.sin( time ) * 1800;
- camera.position.z = Math.cos( time ) * 1800;
- camera.lookAt( scene.position );
- renderer1.render( scene, camera );
- renderer2.render( scene, camera );
- }
- </script>
- </body>
- </html>
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