123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308 |
- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - decal splatter</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">three.js</a> - decal splatter<br/>
- click to shoot
- </div>
- <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 { DecalGeometry } from 'three/addons/geometries/DecalGeometry.js';
- const container = document.getElementById( 'container' );
- let renderer, scene, camera, stats;
- let mesh;
- let raycaster;
- let line;
- const intersection = {
- intersects: false,
- point: new THREE.Vector3(),
- normal: new THREE.Vector3()
- };
- const mouse = new THREE.Vector2();
- const intersects = [];
- const textureLoader = new THREE.TextureLoader();
- const decalDiffuse = textureLoader.load( 'textures/decal/decal-diffuse.png' );
- decalDiffuse.colorSpace = THREE.SRGBColorSpace;
- const decalNormal = textureLoader.load( 'textures/decal/decal-normal.jpg' );
- const decalMaterial = new THREE.MeshPhongMaterial( {
- specular: 0x444444,
- map: decalDiffuse,
- normalMap: decalNormal,
- normalScale: new THREE.Vector2( 1, 1 ),
- shininess: 30,
- transparent: true,
- depthTest: true,
- depthWrite: false,
- polygonOffset: true,
- polygonOffsetFactor: - 4,
- wireframe: false
- } );
- const decals = [];
- let mouseHelper;
- const position = new THREE.Vector3();
- const orientation = new THREE.Euler();
- const size = new THREE.Vector3( 10, 10, 10 );
- const params = {
- minScale: 10,
- maxScale: 20,
- rotate: true,
- clear: function () {
- removeDecals();
- }
- };
- init();
- function init() {
- renderer = new THREE.WebGLRenderer( { antialias: true } );
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.setAnimationLoop( animate );
- container.appendChild( renderer.domElement );
- stats = new Stats();
- container.appendChild( stats.dom );
- scene = new THREE.Scene();
- camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 1000 );
- camera.position.z = 120;
- const controls = new OrbitControls( camera, renderer.domElement );
- controls.minDistance = 50;
- controls.maxDistance = 200;
- scene.add( new THREE.AmbientLight( 0x666666 ) );
- const dirLight1 = new THREE.DirectionalLight( 0xffddcc, 3 );
- dirLight1.position.set( 1, 0.75, 0.5 );
- scene.add( dirLight1 );
- const dirLight2 = new THREE.DirectionalLight( 0xccccff, 3 );
- dirLight2.position.set( - 1, 0.75, - 0.5 );
- scene.add( dirLight2 );
- const geometry = new THREE.BufferGeometry();
- geometry.setFromPoints( [ new THREE.Vector3(), new THREE.Vector3() ] );
- line = new THREE.Line( geometry, new THREE.LineBasicMaterial() );
- scene.add( line );
- loadLeePerrySmith();
- raycaster = new THREE.Raycaster();
- mouseHelper = new THREE.Mesh( new THREE.BoxGeometry( 1, 1, 10 ), new THREE.MeshNormalMaterial() );
- mouseHelper.visible = false;
- scene.add( mouseHelper );
- window.addEventListener( 'resize', onWindowResize );
- let moved = false;
- controls.addEventListener( 'change', function () {
- moved = true;
- } );
- window.addEventListener( 'pointerdown', function () {
- moved = false;
- } );
- window.addEventListener( 'pointerup', function ( event ) {
- if ( moved === false ) {
- checkIntersection( event.clientX, event.clientY );
- if ( intersection.intersects ) shoot();
- }
- } );
- window.addEventListener( 'pointermove', onPointerMove );
- function onPointerMove( event ) {
- if ( event.isPrimary ) {
- checkIntersection( event.clientX, event.clientY );
- }
- }
- function checkIntersection( x, y ) {
- if ( mesh === undefined ) return;
- mouse.x = ( x / window.innerWidth ) * 2 - 1;
- mouse.y = - ( y / window.innerHeight ) * 2 + 1;
- raycaster.setFromCamera( mouse, camera );
- raycaster.intersectObject( mesh, false, intersects );
- if ( intersects.length > 0 ) {
- const p = intersects[ 0 ].point;
- mouseHelper.position.copy( p );
- intersection.point.copy( p );
- const normalMatrix = new THREE.Matrix3().getNormalMatrix( mesh.matrixWorld );
- const n = intersects[ 0 ].face.normal.clone();
- n.applyNormalMatrix( normalMatrix );
- n.multiplyScalar( 10 );
- n.add( intersects[ 0 ].point );
- intersection.normal.copy( intersects[ 0 ].face.normal );
- mouseHelper.lookAt( n );
- const positions = line.geometry.attributes.position;
- positions.setXYZ( 0, p.x, p.y, p.z );
- positions.setXYZ( 1, n.x, n.y, n.z );
- positions.needsUpdate = true;
- intersection.intersects = true;
- intersects.length = 0;
- } else {
- intersection.intersects = false;
- }
- }
- const gui = new GUI();
- gui.add( params, 'minScale', 1, 30 );
- gui.add( params, 'maxScale', 1, 30 );
- gui.add( params, 'rotate' );
- gui.add( params, 'clear' );
- gui.open();
- }
- function loadLeePerrySmith() {
- const map = textureLoader.load( 'models/gltf/LeePerrySmith/Map-COL.jpg' );
- map.colorSpace = THREE.SRGBColorSpace;
- const specularMap = textureLoader.load( 'models/gltf/LeePerrySmith/Map-SPEC.jpg' );
- const normalMap = textureLoader.load( 'models/gltf/LeePerrySmith/Infinite-Level_02_Tangent_SmoothUV.jpg' );
- const loader = new GLTFLoader();
- loader.load( 'models/gltf/LeePerrySmith/LeePerrySmith.glb', function ( gltf ) {
- mesh = gltf.scene.children[ 0 ];
- mesh.material = new THREE.MeshPhongMaterial( {
- specular: 0x111111,
- map: map,
- specularMap: specularMap,
- normalMap: normalMap,
- shininess: 25
- } );
- scene.add( mesh );
- mesh.scale.multiplyScalar( 10 );
- } );
- }
- function shoot() {
- position.copy( intersection.point );
- orientation.copy( mouseHelper.rotation );
- if ( params.rotate ) orientation.z = Math.random() * 2 * Math.PI;
- const scale = params.minScale + Math.random() * ( params.maxScale - params.minScale );
- size.set( scale, scale, scale );
- const material = decalMaterial.clone();
- material.color.setHex( Math.random() * 0xffffff );
- const m = new THREE.Mesh( new DecalGeometry( mesh, position, orientation, size ), material );
- m.renderOrder = decals.length; // give decals a fixed render order
- decals.push( m );
- mesh.attach( m );
- }
- function removeDecals() {
- decals.forEach( function ( d ) {
- mesh.remove( d );
- } );
- decals.length = 0;
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- }
- function animate() {
- renderer.render( scene, camera );
- stats.update();
- }
- </script>
- </body>
- </html>
|