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<title>three.js webgl - postprocessing - unreal bloom</title>
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<style>
#info > * {
max-width: 650px;
margin-left: auto;
margin-right: auto;
}
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<body>
<div id="container"></div>
<div id="info">
<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - Bloom pass by <a href="http://eduperiment.com" target="_blank" rel="noopener">Prashant Sharma</a> and <a href="https://clara.io" target="_blank" rel="noopener">Ben Houston</a>
<br/>
Model: <a href="https://blog.sketchfab.com/art-spotlight-primary-ion-drive/" target="_blank" rel="noopener">Primary Ion Drive</a> by
<a href="http://mjmurdock.com/" target="_blank" rel="noopener">Mike Murdock</a>, CC Attribution.
</div>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/es-module-shims@1.8.0/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"three": "../build/three.module.js",
"three/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as THREE from 'three';
import Stats from 'three/addons/libs/stats.module.js';
import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
import { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';
import { RenderPass } from 'three/addons/postprocessing/RenderPass.js';
import { UnrealBloomPass } from 'three/addons/postprocessing/UnrealBloomPass.js';
import { OutputPass } from 'three/addons/postprocessing/OutputPass.js';
let camera, stats;
let composer, renderer, mixer, clock;
const params = {
threshold: 0,
strength: 1,
radius: 0,
exposure: 1
};
init();
function init() {
const container = document.getElementById( 'container' );
stats = new Stats();
container.appendChild( stats.dom );
clock = new THREE.Clock();
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.toneMapping = THREE.ReinhardToneMapping;
container.appendChild( renderer.domElement );
const scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 100 );
camera.position.set( - 5, 2.5, - 3.5 );
scene.add( camera );
const controls = new OrbitControls( camera, renderer.domElement );
controls.maxPolarAngle = Math.PI * 0.5;
controls.minDistance = 3;
controls.maxDistance = 8;
scene.add( new THREE.AmbientLight( 0xcccccc ) );
const pointLight = new THREE.PointLight( 0xffffff, 100 );
camera.add( pointLight );
const renderScene = new RenderPass( scene, camera );
const bloomPass = new UnrealBloomPass( new THREE.Vector2( window.innerWidth, window.innerHeight ), 1.5, 0.4, 0.85 );
bloomPass.threshold = params.threshold;
bloomPass.strength = params.strength;
bloomPass.radius = params.radius;
const outputPass = new OutputPass();
composer = new EffectComposer( renderer );
composer.addPass( renderScene );
composer.addPass( bloomPass );
composer.addPass( outputPass );
new GLTFLoader().load( 'models/gltf/PrimaryIonDrive.glb', function ( gltf ) {
const model = gltf.scene;
scene.add( model );
mixer = new THREE.AnimationMixer( model );
const clip = gltf.animations[ 0 ];
mixer.clipAction( clip.optimize() ).play();
animate();
} );
const gui = new GUI();
const bloomFolder = gui.addFolder( 'bloom' );
bloomFolder.add( params, 'threshold', 0.0, 1.0 ).onChange( function ( value ) {
bloomPass.threshold = Number( value );
} );
bloomFolder.add( params, 'strength', 0.0, 3.0 ).onChange( function ( value ) {
bloomPass.strength = Number( value );
} );
gui.add( params, 'radius', 0.0, 1.0 ).step( 0.01 ).onChange( function ( value ) {
bloomPass.radius = Number( value );
} );
const toneMappingFolder = gui.addFolder( 'tone mapping' );
toneMappingFolder.add( params, 'exposure', 0.1, 2 ).onChange( function ( value ) {
renderer.toneMappingExposure = Math.pow( value, 4.0 );
} );
window.addEventListener( 'resize', onWindowResize );
}
function onWindowResize() {
const width = window.innerWidth;
const height = window.innerHeight;
camera.aspect = width / height;
camera.updateProjectionMatrix();
renderer.setSize( width, height );
composer.setSize( width, height );
}
function animate() {
requestAnimationFrame( animate );
const delta = clock.getDelta();
mixer.update( delta );
stats.update();
composer.render();
}
</script>
</body>
</html>