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-<!DOCTYPE html>
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-<html lang="en">
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-<head>
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- <title>three.js webgl - multiple canvases - circle</title>
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- <meta charset="utf-8">
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- <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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- <link type="text/css" rel="stylesheet" href="main.css">
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- <style>
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- body {
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- background-color: #555;
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- }
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-
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- #container {
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- width: 100%;
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- height: 700px;
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- -webkit-perspective: 800px;
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- -webkit-perspective-origin: 50% 225px;
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- -moz-perspective: 800px;
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- -moz-perspective-origin: 50% 225px;
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- perspective: 800px;
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- perspective-origin: 50% 225px;
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- }
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-
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- #stage {
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- width: 100%;
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- height: 100%;
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- -webkit-transform-style: preserve-3d;
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- -moz-transform-style: preserve-3d;
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- transform-style: preserve-3d;
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- }
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-
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- #shape {
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- position: relative;
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- top: 160px;
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- margin: 0 auto;
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- height: 200px;
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- width: 200px;
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- -webkit-transform: translateZ(-0px);
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- -webkit-transform-style: preserve-3d;
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- -moz-transform: translateZ(-0px);
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- -moz-transform-style: preserve-3d;
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- transform: translateZ(-0px);
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- transform-style: preserve-3d;
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- }
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-
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- .ring {
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- position: absolute;
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- display: block;
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- height: 300px;
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- width: 200px;
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- text-align: center;
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- font-family: Times, serif;
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- font-size: 124pt;
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- color: black;
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- background-color: #fff;
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- }
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-
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- #shape {
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- border: 0px;
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- background-color: rgba(255, 255, 255, 0);
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- }
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-
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- .ring > .r1 {
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- -webkit-transform: rotateY(300deg) translateZ(-380px);
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- -moz-transform: rotateY(300deg) translateZ(-380px);
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- transform: rotateY(300deg) translateZ(-380px);
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- }
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-
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- .ring > .r2 {
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- -webkit-transform: rotateY(330deg) translateZ(-380px);
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- -moz-transform: rotateY(330deg) translateZ(-380px);
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- transform: rotateY(330deg) translateZ(-380px);
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- }
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-
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- .ring > .r3 {
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- -webkit-transform: rotateY(0deg) translateZ(-380px);
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- -moz-transform: rotateY(0deg) translateZ(-380px);
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- transform: rotateY(0deg) translateZ(-380px);
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- }
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-
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- .ring > .r4 {
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- -webkit-transform: rotateY(30deg) translateZ(-380px);
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- -moz-transform: rotateY(30deg) translateZ(-380px);
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- transform: rotateY(30deg) translateZ(-380px);
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- }
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-
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- .ring > .r5 {
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- -webkit-transform: rotateY(60deg) translateZ(-380px);
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- -moz-transform: rotateY(60deg) translateZ(-380px);
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- transform: rotateY(60deg) translateZ(-380px);
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- }
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-
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- #info {
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- position: absolute;
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- top: 0px; width: 100%;
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- padding: 5px;
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- }
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-
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- #help {
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- position: absolute;
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- top: 50px; width: 100%;
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- text-align: center;
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- }
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- #help>div {
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- margin: auto;
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- padding: 1em;
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- background-color: rgba(0,0,0,0.3);
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- width: 50%;
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- }
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- </style>
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-</head>
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-<body>
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-
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- <div id="container">
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- <div id="stage">
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- <div id="shape" class="ring backfaces">
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- <canvas id="canvas1" class="ring r1"></canvas>
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- <canvas id="canvas2" class="ring r2"></canvas>
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- <canvas id="canvas3" class="ring r3"></canvas>
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- <canvas id="canvas4" class="ring r4"></canvas>
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- <canvas id="canvas5" class="ring r5"></canvas>
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- </div>
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- </div>
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- </div>
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-
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- <div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgl - multiple canvases - circle</div>
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- <div id="help" gstyle="display: none">
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- <div>
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- <a href="https://www.google.com/earth/explore/showcase/liquidgalaxy.html">Google's Liquid Galaxy</a> simulator.<br/>
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- Here 5 monitors are simulated using 3d css. WebGL is then rendered onto each one.
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- </div>
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- </div>
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-
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- <!-- Import maps polyfill -->
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- <!-- Remove this when import maps will be widely supported -->
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- <script async src="https://unpkg.com/[email protected]/dist/es-module-shims.js"></script>
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-
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- <script type="importmap">
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- {
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- "imports": {
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- "three": "../build/three.module.js",
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- "three/addons/": "./jsm/"
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- }
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- }
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- </script>
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-
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- <script type="module">
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- import * as THREE from 'three';
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-
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- const views = [];
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-
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- let scene, renderer;
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-
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- let mouseX = 0, mouseY = 0;
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-
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- const windowHalfX = window.innerWidth / 2;
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- const windowHalfY = window.innerHeight / 2;
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-
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- init();
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- animate();
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-
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- //
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-
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- function View( canvas, rotateY ) {
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-
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- canvas.width = canvas.clientWidth * window.devicePixelRatio;
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- canvas.height = canvas.clientHeight * window.devicePixelRatio;
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-
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- const context = canvas.getContext( '2d' );
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-
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- const camera = new THREE.PerspectiveCamera( 20, canvas.clientWidth / canvas.clientHeight, 1, 20000 );
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- camera.rotation.y = rotateY;
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-
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- // Think of the virtual camera as a post with 5 cameras on it (even though those cameras happen to live in difference scenes)
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- // You need to move the post (ie, the virtualCamera) to move all 5 cameras together.
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-
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- const virtualCamera = new THREE.Camera();
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- virtualCamera.add( camera );
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-
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- this.render = function () {
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-
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- virtualCamera.position.x = - mouseX * 4;
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- virtualCamera.position.y = - mouseY * 4;
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- virtualCamera.position.z = 1800;
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-
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- virtualCamera.lookAt( scene.position );
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- virtualCamera.updateMatrixWorld( true );
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-
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- renderer.render( scene, camera );
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-
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- context.drawImage( renderer.domElement, 0, 0 );
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-
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- };
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-
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- }
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-
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- function init() {
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-
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- const canvas1 = document.getElementById( 'canvas1' );
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- const canvas2 = document.getElementById( 'canvas2' );
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- const canvas3 = document.getElementById( 'canvas3' );
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- const canvas4 = document.getElementById( 'canvas4' );
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- const canvas5 = document.getElementById( 'canvas5' );
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-
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- const fudge = 0.45; // I don't know why this is needed :-(
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- const rot = 30 * THREE.MathUtils.DEG2RAD;
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-
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- views.push( new View( canvas1, rot * - 2 * fudge ) );
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- views.push( new View( canvas2, rot * - 1 * fudge ) );
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- views.push( new View( canvas3, rot * 0 * fudge ) );
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- views.push( new View( canvas4, rot * 1 * fudge ) );
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- views.push( new View( canvas5, rot * 2 * fudge ) );
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-
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- //
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-
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- scene = new THREE.Scene();
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- scene.background = new THREE.Color( 0xffffff );
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-
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- const light = new THREE.DirectionalLight( 0xffffff );
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- light.position.set( 0, 0, 1 ).normalize();
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- scene.add( light );
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-
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- const noof_balls = 51;
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-
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- // shadow
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-
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- const canvas = document.createElement( 'canvas' );
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- canvas.width = 128;
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- canvas.height = 128;
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-
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- const context = canvas.getContext( '2d' );
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- const gradient = context.createRadialGradient( canvas.width / 2, canvas.height / 2, 0, canvas.width / 2, canvas.height / 2, canvas.width / 2 );
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- gradient.addColorStop( 0.1, 'rgba(210,210,210,1)' );
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- gradient.addColorStop( 1, 'rgba(255,255,255,1)' );
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-
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- context.fillStyle = gradient;
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- context.fillRect( 0, 0, canvas.width, canvas.height );
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-
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- const shadowTexture = new THREE.CanvasTexture( canvas );
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- shadowTexture.colorSpace = THREE.SRGBColorSpace;
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-
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- const shadowMaterial = new THREE.MeshBasicMaterial( { map: shadowTexture } );
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- const shadowGeo = new THREE.PlaneGeometry( 300, 300, 1, 1 );
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-
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- for ( let i = 0; i < noof_balls; i ++ ) { // create shadows
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-
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- const shadowMesh = new THREE.Mesh( shadowGeo, shadowMaterial );
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- shadowMesh.position.x = - ( noof_balls - 1 ) / 2 * 400 + i * 400;
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- shadowMesh.position.y = - 250;
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- shadowMesh.rotation.x = - Math.PI / 2;
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- scene.add( shadowMesh );
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-
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- }
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-
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- const radius = 200;
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-
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- const geometry1 = new THREE.IcosahedronGeometry( radius, 1 );
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-
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- const count = geometry1.attributes.position.count;
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- geometry1.setAttribute( 'color', new THREE.BufferAttribute( new Float32Array( count * 3 ), 3 ) );
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-
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- const color = new THREE.Color();
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- const positions = geometry1.attributes.position;
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- const colors = geometry1.attributes.color;
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-
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- for ( let i = 0; i < count; i ++ ) {
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-
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- color.setHSL( ( positions.getY( i ) / radius + 1 ) / 2, 1.0, 0.5, THREE.SRGBColorSpace );
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-
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- colors.setXYZ( i, color.r, color.g, color.b );
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-
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- }
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-
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- const material = new THREE.MeshPhongMaterial( {
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- color: 0xffffff,
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- flatShading: true,
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- vertexColors: true,
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- shininess: 0
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- } );
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-
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- const wireframeMaterial = new THREE.MeshBasicMaterial( { color: 0x000000, wireframe: true, transparent: true } );
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-
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- for ( let i = 0; i < noof_balls; i ++ ) { // create balls
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-
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- const mesh = new THREE.Mesh( geometry1, material );
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- const wireframe = new THREE.Mesh( geometry1, wireframeMaterial );
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- mesh.add( wireframe );
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-
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- mesh.position.x = - ( noof_balls - 1 ) / 2 * 400 + i * 400;
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- mesh.rotation.x = i * 0.5;
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- scene.add( mesh );
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-
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- }
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-
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- renderer = new THREE.WebGLRenderer( { antialias: true } );
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- renderer.setPixelRatio( window.devicePixelRatio );
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- renderer.setSize( 200, 300 );
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-
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- document.addEventListener( 'mousemove', onDocumentMouseMove );
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-
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- }
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-
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- function onDocumentMouseMove( event ) {
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-
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- mouseX = event.clientX - windowHalfX;
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- mouseY = event.clientY - windowHalfY;
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-
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- }
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-
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- function animate() {
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-
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- for ( let i = 0; i < views.length; ++ i ) {
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-
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- views[ i ].render();
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-
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- }
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-
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- requestAnimationFrame( animate );
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-
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- }
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-
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- </script>
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-</body>
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-</html>
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Mr.doob
