CubeCamera Refractions
Description
The CubeCamera object can also be used to create realistic refraction effects.
The extra consideration when using the THREE.CubeCamera for refractions is,
- Set the CubeRenderTargets
texture.mapping
toTHREE.CubeRefractionMapping
- Add the
refractionRatio
property to your Material
Code
./src/server/server.ts
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | import express from "express" import path from "path" import http from "http" const port: number = 3000 class App { private server: http.Server private port: number constructor(port: number) { this.port = port const app = express() app.use(express.static(path.join(__dirname, '../client'))) app.use('/build/three.module.js', express.static(path.join(__dirname, '../../node_modules/three/build/three.module.js'))) app.use('/jsm/controls/OrbitControls', express.static(path.join(__dirname, '../../node_modules/three/examples/jsm/controls/OrbitControls.js'))) app.use('/jsm/libs/stats.module', express.static(path.join(__dirname, '../../node_modules/three/examples/jsm/libs/stats.module.js'))) this.server = new http.Server(app); } public Start() { this.server.listen(this.port, () => { console.log( `Server listening on port ${this.port}.` ) }) } } new App(port).Start() |
./src/client/client.ts
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 | import * as THREE from '/build/three.module.js' import { OrbitControls } from '/jsm/controls/OrbitControls' import Stats from '/jsm/libs/stats.module' import { GUI } from '/jsm/libs/dat.gui.module' const scene: THREE.Scene = new THREE.Scene() scene.background = new THREE.Color(0x87ceeb) const ambientLight = new THREE.AmbientLight(0x888888); scene.add(ambientLight); const light1 = new THREE.DirectionalLight(); light1.position.set(5, 10, 5) light1.castShadow = true light1.shadow.bias = -0.0002 light1.shadow.mapSize.height = 1024 light1.shadow.mapSize.width = 1024 light1.shadow.camera.left = -10 light1.shadow.camera.right = 10 light1.shadow.camera.top = 10 light1.shadow.camera.bottom = -10 scene.add(light1); const camera: THREE.PerspectiveCamera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.01, 100) camera.position.set(0, 8, 0) const renderer: THREE.WebGLRenderer = new THREE.WebGLRenderer() renderer.setSize(window.innerWidth, window.innerHeight) renderer.shadowMap.enabled = true document.body.appendChild(renderer.domElement) const orbitControls = new OrbitControls(camera, renderer.domElement) orbitControls.dampingFactor = .1 orbitControls.enableDamping = true const planeGeometry: THREE.PlaneGeometry = new THREE.PlaneGeometry(25, 25) const texture = new THREE.TextureLoader().load("img/grid.png") const plane: THREE.Mesh = new THREE.Mesh(planeGeometry, new THREE.MeshPhongMaterial({ map: texture })) plane.rotateX(-Math.PI / 2) plane.receiveShadow = true scene.add(plane) window.addEventListener('resize', onWindowResize, false) function onWindowResize() { camera.aspect = window.innerWidth / window.innerHeight camera.updateProjectionMatrix() renderer.setSize(window.innerWidth, window.innerHeight) render() } const cubeRenderTarget1: THREE.WebGLCubeRenderTarget = new THREE.WebGLCubeRenderTarget(128, { format: THREE.RGBFormat, generateMipmaps: true, minFilter: THREE.LinearMipmapLinearFilter }); const cubeRenderTarget2: THREE.WebGLCubeRenderTarget = new THREE.WebGLCubeRenderTarget(128, { format: THREE.RGBFormat, generateMipmaps: true, minFilter: THREE.LinearMipmapLinearFilter }); const cubeRenderTarget3: THREE.WebGLCubeRenderTarget = new THREE.WebGLCubeRenderTarget(128, { format: THREE.RGBFormat, generateMipmaps: true, minFilter: THREE.LinearMipmapLinearFilter }); const cubeCamera1: THREE.CubeCamera = new THREE.CubeCamera(.1, 1000, cubeRenderTarget1); const cubeCamera2: THREE.CubeCamera = new THREE.CubeCamera(.1, 1000, cubeRenderTarget2); const cubeCamera3: THREE.CubeCamera = new THREE.CubeCamera(.1, 1000, cubeRenderTarget3); const pivot1 = new THREE.Object3D(); scene.add(pivot1); const pivot2 = new THREE.Object3D(); scene.add(pivot2); const pivot3 = new THREE.Object3D(); scene.add(pivot3); const material1 = new THREE.MeshPhongMaterial({ shininess: 100, color: 0xffffff, specular: 0xffffff, envMap: cubeRenderTarget1.texture, refractionRatio: .5, transparent: true, side: THREE.BackSide, combine: THREE.MixOperation }); const material2 = new THREE.MeshPhongMaterial({ shininess: 100, color: 0xffffff, specular: 0xffffff, envMap: cubeRenderTarget2.texture, refractionRatio: .5, transparent: true, side: THREE.BackSide, combine: THREE.MixOperation }); const material3 = new THREE.MeshPhongMaterial({ shininess: 100, color: 0xffffff, specular: 0xffffff, envMap: cubeRenderTarget3.texture, refractionRatio: .5, transparent: true, side: THREE.BackSide, combine: THREE.MixOperation }); cubeRenderTarget1.texture.mapping = THREE.CubeRefractionMapping cubeRenderTarget2.texture.mapping = THREE.CubeRefractionMapping cubeRenderTarget3.texture.mapping = THREE.CubeRefractionMapping const ball1 = new THREE.Mesh(new THREE.SphereGeometry(1, 32, 32), material1); ball1.position.set(1, 1.1, 0); ball1.castShadow = true; ball1.receiveShadow = true; ball1.add(cubeCamera1); pivot1.add(ball1); const ball2 = new THREE.Mesh(new THREE.SphereGeometry(1, 32, 32), material2); ball2.position.set(3.1, 1.1, 0); ball2.castShadow = true; ball2.receiveShadow = true; ball2.add(cubeCamera2); pivot2.add(ball2); const ball3 = new THREE.Mesh(new THREE.SphereGeometry(1, 32, 32), material3); ball3.position.set(5.2, 1.1, 0); ball3.castShadow = true; ball3.receiveShadow = true; ball3.add(cubeCamera3); pivot3.add(ball3); const data = { refractionRatio: 0 } const gui = new GUI() const refractionFolder = gui.addFolder('Refraction') refractionFolder.add(data, 'refractionRatio', 0, 1, .01).onChange((v:number) => { material1.refractionRatio = v material2.refractionRatio = v material3.refractionRatio = v }) refractionFolder.open() const stats = Stats() document.body.appendChild(stats.dom) const clock: THREE.Clock = new THREE.Clock() var animate = function () { requestAnimationFrame(animate) const delta = clock.getDelta(); ball1.rotateY(-0.2 * delta); pivot1.rotateY(0.2 * delta); ball2.rotateY(-0.3 * delta); pivot2.rotateY(0.3 * delta); ball3.rotateY(-0.4 * delta); pivot3.rotateY(0.4 * delta); orbitControls.update() render() stats.update() }; function render() { ball1.visible = false cubeCamera1.update(renderer, scene); ball1.visible = true ball2.visible = false cubeCamera2.update(renderer, scene); ball2.visible = true ball3.visible = false cubeCamera3.update(renderer, scene); ball3.visible = true renderer.render(scene, camera) } animate(); |