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289 lines
7.8 KiB
289 lines
7.8 KiB
3 years ago
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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 views</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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</head>
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<body>
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<div id="container"></div>
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<div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - multiple views - webgl</div>
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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/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
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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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<script type="module">
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import * as THREE from 'three';
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import Stats from 'three/addons/libs/stats.module.js';
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let stats;
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let scene, renderer;
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let mouseX = 0, mouseY = 0;
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let windowWidth, windowHeight;
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const views = [
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{
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left: 0,
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bottom: 0,
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width: 0.5,
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height: 1.0,
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background: new THREE.Color( 0.5, 0.5, 0.7 ),
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eye: [ 0, 300, 1800 ],
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up: [ 0, 1, 0 ],
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fov: 30,
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updateCamera: function ( camera, scene, mouseX ) {
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camera.position.x += mouseX * 0.05;
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camera.position.x = Math.max( Math.min( camera.position.x, 2000 ), - 2000 );
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camera.lookAt( scene.position );
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}
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},
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{
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left: 0.5,
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bottom: 0,
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width: 0.5,
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height: 0.5,
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background: new THREE.Color( 0.7, 0.5, 0.5 ),
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eye: [ 0, 1800, 0 ],
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up: [ 0, 0, 1 ],
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fov: 45,
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updateCamera: function ( camera, scene, mouseX ) {
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camera.position.x -= mouseX * 0.05;
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camera.position.x = Math.max( Math.min( camera.position.x, 2000 ), - 2000 );
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camera.lookAt( camera.position.clone().setY( 0 ) );
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}
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},
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{
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left: 0.5,
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bottom: 0.5,
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width: 0.5,
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height: 0.5,
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background: new THREE.Color( 0.5, 0.7, 0.7 ),
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eye: [ 1400, 800, 1400 ],
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up: [ 0, 1, 0 ],
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fov: 60,
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updateCamera: function ( camera, scene, mouseX ) {
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camera.position.y -= mouseX * 0.05;
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camera.position.y = Math.max( Math.min( camera.position.y, 1600 ), - 1600 );
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camera.lookAt( scene.position );
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}
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}
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];
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init();
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animate();
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function init() {
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const container = document.getElementById( 'container' );
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for ( let ii = 0; ii < views.length; ++ ii ) {
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const view = views[ ii ];
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const camera = new THREE.PerspectiveCamera( view.fov, window.innerWidth / window.innerHeight, 1, 10000 );
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camera.position.fromArray( view.eye );
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camera.up.fromArray( view.up );
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view.camera = camera;
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}
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scene = new THREE.Scene();
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const light = new THREE.DirectionalLight( 0xffffff );
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light.position.set( 0, 0, 1 );
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scene.add( light );
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// shadow
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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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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(0,0,0,0.15)' );
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gradient.addColorStop( 1, 'rgba(0,0,0,0)' );
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context.fillStyle = gradient;
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context.fillRect( 0, 0, canvas.width, canvas.height );
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const shadowTexture = new THREE.CanvasTexture( canvas );
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const shadowMaterial = new THREE.MeshBasicMaterial( { map: shadowTexture, transparent: true } );
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const shadowGeo = new THREE.PlaneGeometry( 300, 300, 1, 1 );
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let shadowMesh;
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shadowMesh = new THREE.Mesh( shadowGeo, shadowMaterial );
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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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shadowMesh = new THREE.Mesh( shadowGeo, shadowMaterial );
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shadowMesh.position.x = - 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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shadowMesh = new THREE.Mesh( shadowGeo, shadowMaterial );
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shadowMesh.position.x = 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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const radius = 200;
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const geometry1 = new THREE.IcosahedronGeometry( radius, 1 );
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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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const geometry2 = geometry1.clone();
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const geometry3 = geometry1.clone();
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const color = new THREE.Color();
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const positions1 = geometry1.attributes.position;
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const positions2 = geometry2.attributes.position;
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const positions3 = geometry3.attributes.position;
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const colors1 = geometry1.attributes.color;
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const colors2 = geometry2.attributes.color;
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const colors3 = geometry3.attributes.color;
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for ( let i = 0; i < count; i ++ ) {
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color.setHSL( ( positions1.getY( i ) / radius + 1 ) / 2, 1.0, 0.5 );
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colors1.setXYZ( i, color.r, color.g, color.b );
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color.setHSL( 0, ( positions2.getY( i ) / radius + 1 ) / 2, 0.5 );
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colors2.setXYZ( i, color.r, color.g, color.b );
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color.setRGB( 1, 0.8 - ( positions3.getY( i ) / radius + 1 ) / 2, 0 );
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colors3.setXYZ( i, color.r, color.g, color.b );
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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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const wireframeMaterial = new THREE.MeshBasicMaterial( { color: 0x000000, wireframe: true, transparent: true } );
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let mesh = new THREE.Mesh( geometry1, material );
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let wireframe = new THREE.Mesh( geometry1, wireframeMaterial );
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mesh.add( wireframe );
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mesh.position.x = - 400;
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mesh.rotation.x = - 1.87;
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scene.add( mesh );
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mesh = new THREE.Mesh( geometry2, material );
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wireframe = new THREE.Mesh( geometry2, wireframeMaterial );
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mesh.add( wireframe );
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mesh.position.x = 400;
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scene.add( mesh );
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mesh = new THREE.Mesh( geometry3, material );
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wireframe = new THREE.Mesh( geometry3, wireframeMaterial );
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mesh.add( wireframe );
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scene.add( mesh );
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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container.appendChild( renderer.domElement );
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stats = new Stats();
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container.appendChild( stats.dom );
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document.addEventListener( 'mousemove', onDocumentMouseMove );
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}
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function onDocumentMouseMove( event ) {
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mouseX = ( event.clientX - windowWidth / 2 );
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mouseY = ( event.clientY - windowHeight / 2 );
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}
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function updateSize() {
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if ( windowWidth != window.innerWidth || windowHeight != window.innerHeight ) {
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windowWidth = window.innerWidth;
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windowHeight = window.innerHeight;
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renderer.setSize( windowWidth, windowHeight );
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}
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}
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function animate() {
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render();
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stats.update();
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requestAnimationFrame( animate );
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}
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function render() {
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updateSize();
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for ( let ii = 0; ii < views.length; ++ ii ) {
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const view = views[ ii ];
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const camera = view.camera;
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view.updateCamera( camera, scene, mouseX, mouseY );
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const left = Math.floor( windowWidth * view.left );
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const bottom = Math.floor( windowHeight * view.bottom );
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const width = Math.floor( windowWidth * view.width );
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const height = Math.floor( windowHeight * view.height );
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renderer.setViewport( left, bottom, width, height );
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renderer.setScissor( left, bottom, width, height );
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renderer.setScissorTest( true );
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renderer.setClearColor( view.background );
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camera.aspect = width / height;
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camera.updateProjectionMatrix();
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renderer.render( scene, camera );
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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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