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390 lines
9.5 KiB
390 lines
9.5 KiB
2 years ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - particles - dynamic - postprocessing</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<link type="text/css" rel="stylesheet" href="main.css">
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</head>
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<body>
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<div id="container"></div>
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<div id="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl dynamic particles + postprocessing<br/>
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models by <a href="http://sketchup.google.com/3dwarehouse/details?mid=2c6fd128fca34052adc5f5b98d513da1" target="_blank" rel="noopener">Reallusion</a>
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<a href="http://sketchup.google.com/3dwarehouse/details?mid=f526cc4abf7cb68d76cab47c765b7255" target="_blank" rel="noopener">iClone</a>
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</div>
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<!-- Import maps polyfill -->
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<!-- Remove this when import maps will be widely supported -->
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<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.module.js",
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"three/addons/": "./jsm/"
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}
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}
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</script>
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<script type="module">
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import * as THREE from 'three';
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import Stats from 'three/addons/libs/stats.module.js';
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import { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';
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import { RenderPass } from 'three/addons/postprocessing/RenderPass.js';
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import { ShaderPass } from 'three/addons/postprocessing/ShaderPass.js';
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import { BloomPass } from 'three/addons/postprocessing/BloomPass.js';
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import { FilmPass } from 'three/addons/postprocessing/FilmPass.js';
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import { FocusShader } from 'three/addons/shaders/FocusShader.js';
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import { OBJLoader } from 'three/addons/loaders/OBJLoader.js';
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let camera, scene, renderer, mesh;
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let parent;
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const meshes = [], clonemeshes = [];
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let composer, effectFocus;
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const clock = new THREE.Clock();
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let stats;
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init();
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animate();
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function init() {
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const container = document.querySelector( '#container' );
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camera = new THREE.PerspectiveCamera( 20, window.innerWidth / window.innerHeight, 1, 50000 );
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camera.position.set( 0, 700, 7000 );
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scene = new THREE.Scene();
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scene.background = new THREE.Color( 0x000104 );
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scene.fog = new THREE.FogExp2( 0x000104, 0.0000675 );
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camera.lookAt( scene.position );
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const loader = new OBJLoader();
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loader.load( 'models/obj/male02/male02.obj', function ( object ) {
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const positions = combineBuffer( object, 'position' );
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createMesh( positions, scene, 4.05, - 500, - 350, 600, 0xff7744 );
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createMesh( positions, scene, 4.05, 500, - 350, 0, 0xff5522 );
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createMesh( positions, scene, 4.05, - 250, - 350, 1500, 0xff9922 );
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createMesh( positions, scene, 4.05, - 250, - 350, - 1500, 0xff99ff );
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} );
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loader.load( 'models/obj/female02/female02.obj', function ( object ) {
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const positions = combineBuffer( object, 'position' );
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createMesh( positions, scene, 4.05, - 1000, - 350, 0, 0xffdd44 );
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createMesh( positions, scene, 4.05, 0, - 350, 0, 0xffffff );
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createMesh( positions, scene, 4.05, 1000, - 350, 400, 0xff4422 );
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createMesh( positions, scene, 4.05, 250, - 350, 1500, 0xff9955 );
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createMesh( positions, scene, 4.05, 250, - 350, 2500, 0xff77dd );
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} );
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renderer = new THREE.WebGLRenderer();
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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renderer.autoClear = false;
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container.appendChild( renderer.domElement );
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parent = new THREE.Object3D();
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scene.add( parent );
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const grid = new THREE.Points( new THREE.PlaneGeometry( 15000, 15000, 64, 64 ), new THREE.PointsMaterial( { color: 0xff0000, size: 10 } ) );
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grid.position.y = - 400;
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grid.rotation.x = - Math.PI / 2;
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parent.add( grid );
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// postprocessing
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const renderModel = new RenderPass( scene, camera );
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const effectBloom = new BloomPass( 0.75 );
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const effectFilm = new FilmPass( 0.5, 0.5, 1448, false );
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effectFocus = new ShaderPass( FocusShader );
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effectFocus.uniforms[ 'screenWidth' ].value = window.innerWidth * window.devicePixelRatio;
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effectFocus.uniforms[ 'screenHeight' ].value = window.innerHeight * window.devicePixelRatio;
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composer = new EffectComposer( renderer );
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composer.addPass( renderModel );
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composer.addPass( effectBloom );
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composer.addPass( effectFilm );
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composer.addPass( effectFocus );
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//stats
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stats = new Stats();
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container.appendChild( stats.dom );
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window.addEventListener( 'resize', onWindowResize );
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}
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function onWindowResize() {
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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camera.lookAt( scene.position );
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renderer.setSize( window.innerWidth, window.innerHeight );
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composer.setSize( window.innerWidth, window.innerHeight );
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effectFocus.uniforms[ 'screenWidth' ].value = window.innerWidth * window.devicePixelRatio;
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effectFocus.uniforms[ 'screenHeight' ].value = window.innerHeight * window.devicePixelRatio;
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}
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function combineBuffer( model, bufferName ) {
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let count = 0;
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model.traverse( function ( child ) {
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if ( child.isMesh ) {
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const buffer = child.geometry.attributes[ bufferName ];
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count += buffer.array.length;
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}
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} );
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const combined = new Float32Array( count );
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let offset = 0;
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model.traverse( function ( child ) {
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if ( child.isMesh ) {
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const buffer = child.geometry.attributes[ bufferName ];
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combined.set( buffer.array, offset );
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offset += buffer.array.length;
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}
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} );
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return new THREE.BufferAttribute( combined, 3 );
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}
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function createMesh( positions, scene, scale, x, y, z, color ) {
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const geometry = new THREE.BufferGeometry();
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geometry.setAttribute( 'position', positions.clone() );
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geometry.setAttribute( 'initialPosition', positions.clone() );
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geometry.attributes.position.setUsage( THREE.DynamicDrawUsage );
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const clones = [
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[ 6000, 0, - 4000 ],
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[ 5000, 0, 0 ],
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[ 1000, 0, 5000 ],
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[ 1000, 0, - 5000 ],
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[ 4000, 0, 2000 ],
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[ - 4000, 0, 1000 ],
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[ - 5000, 0, - 5000 ],
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[ 0, 0, 0 ]
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];
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for ( let i = 0; i < clones.length; i ++ ) {
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const c = ( i < clones.length - 1 ) ? 0x252525 : color;
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mesh = new THREE.Points( geometry, new THREE.PointsMaterial( { size: 30, color: c } ) );
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mesh.scale.x = mesh.scale.y = mesh.scale.z = scale;
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mesh.position.x = x + clones[ i ][ 0 ];
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mesh.position.y = y + clones[ i ][ 1 ];
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mesh.position.z = z + clones[ i ][ 2 ];
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parent.add( mesh );
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clonemeshes.push( { mesh: mesh, speed: 0.5 + Math.random() } );
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}
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meshes.push( {
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mesh: mesh, verticesDown: 0, verticesUp: 0, direction: 0, speed: 15, delay: Math.floor( 200 + 200 * Math.random() ),
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start: Math.floor( 100 + 200 * Math.random() ),
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} );
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}
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function animate() {
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requestAnimationFrame( animate );
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render();
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stats.update();
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}
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function render() {
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let delta = 10 * clock.getDelta();
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delta = delta < 2 ? delta : 2;
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parent.rotation.y += - 0.02 * delta;
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for ( let j = 0; j < clonemeshes.length; j ++ ) {
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const cm = clonemeshes[ j ];
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cm.mesh.rotation.y += - 0.1 * delta * cm.speed;
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}
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for ( let j = 0; j < meshes.length; j ++ ) {
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const data = meshes[ j ];
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const positions = data.mesh.geometry.attributes.position;
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const initialPositions = data.mesh.geometry.attributes.initialPosition;
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const count = positions.count;
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if ( data.start > 0 ) {
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data.start -= 1;
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} else {
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if ( data.direction === 0 ) {
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data.direction = - 1;
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}
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}
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for ( let i = 0; i < count; i ++ ) {
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const px = positions.getX( i );
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const py = positions.getY( i );
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const pz = positions.getZ( i );
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// falling down
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if ( data.direction < 0 ) {
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if ( py > 0 ) {
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positions.setXYZ(
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i,
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px + 1.5 * ( 0.50 - Math.random() ) * data.speed * delta,
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py + 3.0 * ( 0.25 - Math.random() ) * data.speed * delta,
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pz + 1.5 * ( 0.50 - Math.random() ) * data.speed * delta
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);
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} else {
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data.verticesDown += 1;
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}
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}
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// rising up
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if ( data.direction > 0 ) {
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const ix = initialPositions.getX( i );
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const iy = initialPositions.getY( i );
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const iz = initialPositions.getZ( i );
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const dx = Math.abs( px - ix );
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const dy = Math.abs( py - iy );
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const dz = Math.abs( pz - iz );
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const d = dx + dy + dx;
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if ( d > 1 ) {
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positions.setXYZ(
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i,
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px - ( px - ix ) / dx * data.speed * delta * ( 0.85 - Math.random() ),
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py - ( py - iy ) / dy * data.speed * delta * ( 1 + Math.random() ),
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pz - ( pz - iz ) / dz * data.speed * delta * ( 0.85 - Math.random() )
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);
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} else {
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data.verticesUp += 1;
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}
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}
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}
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// all vertices down
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if ( data.verticesDown >= count ) {
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if ( data.delay <= 0 ) {
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data.direction = 1;
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data.speed = 5;
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data.verticesDown = 0;
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data.delay = 320;
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} else {
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data.delay -= 1;
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}
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}
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// all vertices up
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if ( data.verticesUp >= count ) {
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if ( data.delay <= 0 ) {
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data.direction = - 1;
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data.speed = 15;
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data.verticesUp = 0;
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data.delay = 120;
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} else {
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data.delay -= 1;
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}
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}
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positions.needsUpdate = true;
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}
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composer.render( 0.01 );
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}
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</script>
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</body>
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</html>
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