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Examples : Shiny Refraction

Description

This examples demonstrates,

  • Creating a refraction effect with inner and outer shine.
  • Using the EffectComposer to add a Depth of Field (DOF) effect.
  • Dynamically changing the DOF depending on camera and ball distance.
  • Changing MeshPhysicalMaterial properties using the GUI.

Code

./src/client/client.ts

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import * as THREE from 'three'
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls'
import Stats from 'three/examples/jsm/libs/stats.module'
import { GUI } from 'three/examples/jsm/libs/dat.gui.module'
import { EffectComposer } from 'three/examples/jsm/postprocessing/EffectComposer'
import { RenderPass } from 'three/examples/jsm/postprocessing/RenderPass'
import { BokehPass } from 'three/examples/jsm/postprocessing/BokehPass'

const scene = new THREE.Scene()

const envTexture = new THREE.CubeTextureLoader().load([
    'img/px_25.jpg',
    'img/nx_25.jpg',
    'img/py_25.jpg',
    'img/ny_25.jpg',
    'img/pz_25.jpg',
    'img/nz_25.jpg'
])
scene.background = envTexture

const ambientLight = new THREE.AmbientLight(0x444444)
scene.add(ambientLight)

const light1 = new THREE.PointLight()
light1.position.set(-6, 10, -6)
light1.castShadow = true
light1.shadow.bias = -0.0002
light1.shadow.mapSize.height = 2048
light1.shadow.mapSize.width = 2048
scene.add(light1)

const camera = new THREE.PerspectiveCamera(
    75,
    window.innerWidth / window.innerHeight,
    0.01,
    100
)
camera.position.set(2, 0, 2)

const renderer = new THREE.WebGLRenderer()
renderer.setSize(window.innerWidth, window.innerHeight)
renderer.shadowMap.enabled = true
document.body.appendChild(renderer.domElement)

const renderPass = new RenderPass(scene, camera)
const bokehPass = new BokehPass(scene, camera, {
    focus: 1.0,
    aperture: 0.0001,
    maxblur: 1.0,
    width: window.innerWidth,
    height: window.innerHeight
})
const composer = new EffectComposer(renderer)
composer.addPass(renderPass)
composer.addPass(bokehPass)

const orbitControls = new OrbitControls(camera, renderer.domElement)
orbitControls.enableDamping = true

const 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.position.y = -1
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)
    composer.setSize(window.innerWidth, window.innerHeight)
}

const pivot1 = new THREE.Object3D()
scene.add(pivot1)

const cubeRenderTarget = new THREE.WebGLCubeRenderTarget(2048)
const cubeCamera = new THREE.CubeCamera(0.1, 100, cubeRenderTarget)
scene.add(cubeCamera)

const material1 = new THREE.MeshPhysicalMaterial({
    metalness: 1.0,
    roughness: 0.05,
    refractionRatio: 0.1,
    envMap: cubeRenderTarget.texture,
    transparent: true,
    transmission: 1.0,
    side: THREE.BackSide,
    clearcoat: 0.63,
    clearcoatRoughness: 0.38
})
const material2 = new THREE.MeshPhysicalMaterial({
    metalness: 0.2,
    roughness: 0,
    envMap: envTexture,
    transparent: true,
    opacity: 0.5,
    transmission: 1.0,
    side: THREE.FrontSide
})

const ball1 = new THREE.Mesh(new THREE.SphereGeometry(1, 32, 32), material1)
ball1.position.set(1.5, 0, 0)
ball1.castShadow = true
pivot1.add(ball1)

const ball2 = new THREE.Mesh(new THREE.SphereGeometry(1, 32, 32), material2)
ball2.position.set(1.5, 0, 0)
ball2.castShadow = true
pivot1.add(ball2)

const gui = new GUI()

const ball1Folder = gui.addFolder('Ball1')
ball1Folder.add(ball1, 'visible').name('Visible')
ball1Folder.add(material1, 'opacity', 0, 1.0, 0.01).name('Opacity')
ball1Folder.add(material1, 'metalness', 0, 1.0, 0.01).name('Metalness')
ball1Folder.add(material1, 'roughness', 0, 1.0, 0.01).name('Roughness')
ball1Folder.add(material1, 'transmission', 0, 1.0, 0.01).name('Transmission')
ball1Folder.add(material1, 'clearcoat', 0, 1.0, 0.01).name('Clearcoat')
ball1Folder
    .add(material1, 'clearcoatRoughness', 0, 1.0, 0.01)
    .name('ClearcoatRoughness')
ball1Folder.open()

const ball2Folder = gui.addFolder('Ball2')
ball2Folder.add(ball2, 'visible').name('Visible')
ball2Folder.add(material2, 'opacity', 0, 1.0, 0.01).name('Opacity')
ball2Folder.add(material2, 'metalness', 0, 1.0, 0.01).name('Metalness')
ball2Folder.add(material2, 'roughness', 0, 1.0, 0.01).name('Roughness')
ball2Folder.add(material2, 'transmission', 0, 1.0, 0.01).name('Transmission')
ball2Folder.open()

const stats = Stats()
document.body.appendChild(stats.dom)

const clock = new THREE.Clock()

function animate() {
    requestAnimationFrame(animate)

    orbitControls.update()

    const ball1WorldPosition = new THREE.Vector3()
    ball1.getWorldPosition(ball1WorldPosition)

    ;(bokehPass.uniforms as any).focus.value =
        camera.position.distanceTo(ball1WorldPosition)

    const delta = clock.getDelta()
    ball1.rotateY(-0.2 * delta)
    ball2.rotateY(-0.2 * delta)
    pivot1.rotateY(0.2 * delta)

    render()

    stats.update()
}

function render() {
    cubeCamera.position.copy(camera.position)
    cubeCamera.update(renderer, scene)
    //renderer.render(scene, camera)
    composer.render(0.1)
}

animate()