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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - mirror with nodes</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 {
- color: #444;
- }
- a {
- color: #08f;
- }
- </style>
- </head>
- <body>
- <div id="container"></div>
- <div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - mirror node-based
- </div>
- <script type="module">
- import * as THREE from '../build/three.module.js';
- import { GUI } from './jsm/libs/dat.gui.module.js';
- import { OrbitControls } from './jsm/controls/OrbitControls.js';
- import { ReflectorRTT } from './jsm/objects/ReflectorRTT.js';
- import {
- NodeFrame,
- ExpressionNode,
- PhongNodeMaterial,
- MathNode,
- OperatorNode,
- TextureNode,
- BlurNode,
- FloatNode,
- ReflectorNode,
- SwitchNode,
- NormalMapNode,
- } from './jsm/nodes/Nodes.js';
- const decalNormal = new THREE.TextureLoader().load( 'textures/decal/decal-normal.jpg' );
- const decalDiffuse = new THREE.TextureLoader().load( 'textures/decal/decal-diffuse.png' );
- decalDiffuse.wrapS = decalDiffuse.wrapT = THREE.RepeatWrapping;
- let camera, scene, renderer;
- const clock = new THREE.Clock();
- let cameraControls;
- const gui = new GUI();
- let sphereGroup, smallSphere;
- let groundMirrorMaterial;
- const frame = new NodeFrame();
- let groundMirror;
- let blurMirror;
- function init() {
- // renderer
- renderer = new THREE.WebGLRenderer();
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- // scene
- scene = new THREE.Scene();
- // camera
- camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 500 );
- camera.position.set( 0, 75, 160 );
- cameraControls = new OrbitControls( camera, renderer.domElement );
- cameraControls.target.set( 0, 40, 0 );
- cameraControls.maxDistance = 400;
- cameraControls.minDistance = 10;
- cameraControls.update();
- const container = document.getElementById( 'container' );
- container.appendChild( renderer.domElement );
- window.addEventListener( 'resize', onWindowResize, false );
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- groundMirror.getRenderTarget().setSize(
- window.innerWidth * window.devicePixelRatio,
- window.innerHeight * window.devicePixelRatio
- );
- blurMirror.size.set(
- window.innerWidth * window.devicePixelRatio,
- window.innerHeight * window.devicePixelRatio
- );
- blurMirror.updateFrame();
- }
- function fillScene() {
- const planeGeo = new THREE.PlaneGeometry( 100.1, 100.1 );
- let geometry, material;
- // reflector/mirror plane
- geometry = new THREE.PlaneGeometry( 100, 100 );
- groundMirror = new ReflectorRTT( geometry, {
- clipBias: 0.003,
- textureWidth: window.innerWidth * window.devicePixelRatio,
- textureHeight: window.innerHeight * window.devicePixelRatio
- } );
- const mask = new SwitchNode( new TextureNode( decalDiffuse ), 'w' );
- const mirror = new ReflectorNode( groundMirror );
- const normalMap = new TextureNode( decalNormal );
- const normalXY = new SwitchNode( normalMap, 'xy' );
- const normalXYFlip = new MathNode(
- normalXY,
- MathNode.INVERT
- );
- const offsetNormal = new OperatorNode(
- normalXYFlip,
- new FloatNode( .5 ),
- OperatorNode.SUB
- );
- mirror.offset = new OperatorNode(
- offsetNormal, // normal
- new FloatNode( 6 ), // scale
- OperatorNode.MUL
- );
- blurMirror = new BlurNode( mirror );
- blurMirror.size = new THREE.Vector2(
- window.innerWidth * window.devicePixelRatio,
- window.innerHeight * window.devicePixelRatio
- );
- blurMirror.uv = new ExpressionNode( 'projCoord.xyz / projCoord.q', 'vec3' );
- blurMirror.uv.keywords[ 'projCoord' ] = new OperatorNode( mirror.offset, mirror.uv, OperatorNode.ADD );
- blurMirror.radius.x = blurMirror.radius.y = 0;
- gui.add( { blur: blurMirror.radius.x }, 'blur', 0, 25 ).onChange( function ( v ) {
- blurMirror.radius.x = blurMirror.radius.y = v;
- } );
- groundMirrorMaterial = new PhongNodeMaterial();
- groundMirrorMaterial.environment = blurMirror; // or add "mirror" variable to disable blur
- groundMirrorMaterial.environmentAlpha = mask;
- groundMirrorMaterial.normal = new NormalMapNode( normalMap );
- //groundMirrorMaterial.normalScale = new FloatNode( 1 );
- // test serialization
- /*
- let library = {};
- library[ groundMirror.uuid ] = groundMirror;
- library[ decalDiffuse.uuid ] = decalDiffuse;
- library[ decalNormal.uuid ] = decalNormal;
- library[ mirror.textureMatrix.uuid ] = mirror.textureMatrix; // use textureMatrix to projection
- let json = groundMirrorMaterial.toJSON();
- groundMirrorMaterial = new NodeMaterialLoader( null, library ).parse( json );
- */
- //--
- const mirrorMesh = new THREE.Mesh( planeGeo, groundMirrorMaterial );
- // add all alternative mirror materials inside the ReflectorRTT to prevent:
- // glDrawElements: Source and destination textures of the draw are the same.
- groundMirror.add( mirrorMesh );
- groundMirror.rotateX( - Math.PI / 2 );
- scene.add( groundMirror );
- sphereGroup = new THREE.Object3D();
- scene.add( sphereGroup );
- geometry = new THREE.CylinderGeometry( 0.1, 15 * Math.cos( Math.PI / 180 * 30 ), 0.1, 24, 1 );
- material = new THREE.MeshPhongMaterial( { color: 0xffffff, emissive: 0x444444 } );
- const sphereCap = new THREE.Mesh( geometry, material );
- sphereCap.position.y = - 15 * Math.sin( Math.PI / 180 * 30 ) - 0.05;
- sphereCap.rotateX( - Math.PI );
- geometry = new THREE.SphereGeometry( 15, 24, 24, Math.PI / 2, Math.PI * 2, 0, Math.PI / 180 * 120 );
- const halfSphere = new THREE.Mesh( geometry, material );
- halfSphere.add( sphereCap );
- halfSphere.rotateX( - Math.PI / 180 * 135 );
- halfSphere.rotateZ( - Math.PI / 180 * 20 );
- halfSphere.position.y = 7.5 + 15 * Math.sin( Math.PI / 180 * 30 );
- sphereGroup.add( halfSphere );
- geometry = new THREE.IcosahedronGeometry( 5, 0 );
- material = new THREE.MeshPhongMaterial( { color: 0xffffff, emissive: 0x333333, flatShading: true } );
- smallSphere = new THREE.Mesh( geometry, material );
- scene.add( smallSphere );
- // walls
- const planeTop = new THREE.Mesh( planeGeo, new THREE.MeshPhongMaterial( { color: 0xffffff } ) );
- planeTop.position.y = 100;
- planeTop.rotateX( Math.PI / 2 );
- scene.add( planeTop );
- const planeBack = new THREE.Mesh( planeGeo, new THREE.MeshPhongMaterial( { color: 0xffffff } ) );
- planeBack.position.z = - 50;
- planeBack.position.y = 50;
- scene.add( planeBack );
- const planeFront = new THREE.Mesh( planeGeo, new THREE.MeshPhongMaterial( { color: 0x7f7fff } ) );
- planeFront.position.z = 50;
- planeFront.position.y = 50;
- planeFront.rotateY( Math.PI );
- scene.add( planeFront );
- const planeRight = new THREE.Mesh( planeGeo, new THREE.MeshPhongMaterial( { color: 0x00ff00 } ) );
- planeRight.position.x = 50;
- planeRight.position.y = 50;
- planeRight.rotateY( - Math.PI / 2 );
- scene.add( planeRight );
- const planeLeft = new THREE.Mesh( planeGeo, new THREE.MeshPhongMaterial( { color: 0xff0000 } ) );
- planeLeft.position.x = - 50;
- planeLeft.position.y = 50;
- planeLeft.rotateY( Math.PI / 2 );
- scene.add( planeLeft );
- // lights
- const mainLight = new THREE.PointLight( 0xcccccc, 1.5, 250 );
- mainLight.position.y = 60;
- scene.add( mainLight );
- const greenLight = new THREE.PointLight( 0x00ff00, 0.25, 1000 );
- greenLight.position.set( 550, 50, 0 );
- scene.add( greenLight );
- const redLight = new THREE.PointLight( 0xff0000, 0.25, 1000 );
- redLight.position.set( - 550, 50, 0 );
- scene.add( redLight );
- const blueLight = new THREE.PointLight( 0x7f7fff, 0.25, 1000 );
- blueLight.position.set( 0, 50, 550 );
- scene.add( blueLight );
- }
- function render() {
- renderer.render( scene, camera );
- }
- function update() {
- requestAnimationFrame( update );
- const delta = clock.getDelta();
- const timer = Date.now() * 0.01;
- sphereGroup.rotation.y -= 0.002;
- smallSphere.position.set(
- Math.cos( timer * 0.1 ) * 30,
- Math.abs( Math.cos( timer * 0.2 ) ) * 20 + 5,
- Math.sin( timer * 0.1 ) * 30
- );
- smallSphere.rotation.y = ( Math.PI / 2 ) - timer * 0.1;
- smallSphere.rotation.z = timer * 0.8;
- frame.update( delta ).updateNode( groundMirrorMaterial );
- render();
- }
- init();
- fillScene();
- update();
- </script>
- </body>
- </html>
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