/
webgl_materials_physical_transmission.html
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webgl_materials_physical_transmission.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>threejs webgl - materials - transmission</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">
</head>
<body>
<div id="container"></div>
<div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">threejs</a> - Transmission</div>
<script type="importmap">
{
"imports": {
"three": "../build/three.module.js",
"three/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as THREE from 'three';
import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
import { RGBELoader } from 'three/addons/loaders/RGBELoader.js';
const params = {
color: 0xffffff,
transmission: 1,
opacity: 1,
metalness: 0,
roughness: 0,
ior: 1.5,
thickness: 0.01,
specularIntensity: 1,
specularColor: 0xffffff,
envMapIntensity: 1,
lightIntensity: 1,
exposure: 1
};
let camera, scene, renderer;
let mesh;
const hdrEquirect = new RGBELoader()
.setPath( 'textures/equirectangular/' )
.load( 'royal_esplanade_1k.hdr', function () {
hdrEquirect.mapping = THREE.EquirectangularReflectionMapping;
init();
render();
} );
function init() {
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.shadowMap.enabled = true;
document.body.appendChild( renderer.domElement );
renderer.toneMapping = THREE.ACESFilmicToneMapping;
renderer.toneMappingExposure = params.exposure;
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 2000 );
camera.position.set( 0, 0, 120 );
//
scene.background = hdrEquirect;
//
const geometry = new THREE.SphereGeometry( 20, 64, 32 );
const texture = new THREE.CanvasTexture( generateTexture() );
texture.magFilter = THREE.NearestFilter;
texture.wrapT = THREE.RepeatWrapping;
texture.wrapS = THREE.RepeatWrapping;
texture.repeat.set( 1, 3.5 );
const material = new THREE.MeshPhysicalMaterial( {
color: params.color,
metalness: params.metalness,
roughness: params.roughness,
ior: params.ior,
alphaMap: texture,
envMap: hdrEquirect,
envMapIntensity: params.envMapIntensity,
transmission: params.transmission, // use material.transmission for glass materials
specularIntensity: params.specularIntensity,
specularColor: params.specularColor,
opacity: params.opacity,
side: THREE.DoubleSide,
transparent: true
} );
mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
//
const controls = new OrbitControls( camera, renderer.domElement );
controls.addEventListener( 'change', render ); // use if there is no animation loop
controls.minDistance = 10;
controls.maxDistance = 150;
window.addEventListener( 'resize', onWindowResize );
//
const gui = new GUI();
gui.addColor( params, 'color' )
.onChange( function () {
material.color.set( params.color );
render();
} );
gui.add( params, 'transmission', 0, 1, 0.01 )
.onChange( function () {
material.transmission = params.transmission;
render();
} );
gui.add( params, 'opacity', 0, 1, 0.01 )
.onChange( function () {
material.opacity = params.opacity;
render();
} );
gui.add( params, 'metalness', 0, 1, 0.01 )
.onChange( function () {
material.metalness = params.metalness;
render();
} );
gui.add( params, 'roughness', 0, 1, 0.01 )
.onChange( function () {
material.roughness = params.roughness;
render();
} );
gui.add( params, 'ior', 1, 2, 0.01 )
.onChange( function () {
material.ior = params.ior;
render();
} );
gui.add( params, 'thickness', 0, 5, 0.01 )
.onChange( function () {
material.thickness = params.thickness;
render();
} );
gui.add( params, 'specularIntensity', 0, 1, 0.01 )
.onChange( function () {
material.specularIntensity = params.specularIntensity;
render();
} );
gui.addColor( params, 'specularColor' )
.onChange( function () {
material.specularColor.set( params.specularColor );
render();
} );
gui.add( params, 'envMapIntensity', 0, 1, 0.01 )
.name( 'envMap intensity' )
.onChange( function () {
material.envMapIntensity = params.envMapIntensity;
render();
} );
gui.add( params, 'exposure', 0, 1, 0.01 )
.onChange( function () {
renderer.toneMappingExposure = params.exposure;
render();
} );
gui.open();
}
function onWindowResize() {
const width = window.innerWidth;
const height = window.innerHeight;
camera.aspect = width / height;
camera.updateProjectionMatrix();
renderer.setSize( width, height );
render();
}
//
function generateTexture() {
const canvas = document.createElement( 'canvas' );
canvas.width = 2;
canvas.height = 2;
const context = canvas.getContext( '2d' );
context.fillStyle = 'white';
context.fillRect( 0, 1, 2, 1 );
return canvas;
}
function render() {
renderer.render( scene, camera );
}
</script>
</body>
</html>