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304 lines
7.3 KiB
304 lines
7.3 KiB
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - decal splatter</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> - decal splatter<br/>
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click to shoot
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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 { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
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import { DecalGeometry } from 'three/addons/geometries/DecalGeometry.js';
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const container = document.getElementById( 'container' );
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let renderer, scene, camera, stats;
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let mesh;
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let raycaster;
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let line;
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const intersection = {
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intersects: false,
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point: new THREE.Vector3(),
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normal: new THREE.Vector3()
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};
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const mouse = new THREE.Vector2();
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const intersects = [];
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const textureLoader = new THREE.TextureLoader();
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const decalDiffuse = textureLoader.load( 'textures/decal/decal-diffuse.png' );
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const decalNormal = textureLoader.load( 'textures/decal/decal-normal.jpg' );
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const decalMaterial = new THREE.MeshPhongMaterial( {
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specular: 0x444444,
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map: decalDiffuse,
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normalMap: decalNormal,
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normalScale: new THREE.Vector2( 1, 1 ),
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shininess: 30,
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transparent: true,
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depthTest: true,
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depthWrite: false,
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polygonOffset: true,
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polygonOffsetFactor: - 4,
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wireframe: false
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} );
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const decals = [];
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let mouseHelper;
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const position = new THREE.Vector3();
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const orientation = new THREE.Euler();
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const size = new THREE.Vector3( 10, 10, 10 );
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const params = {
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minScale: 10,
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maxScale: 20,
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rotate: true,
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clear: function () {
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removeDecals();
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}
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};
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init();
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animate();
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function init() {
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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container.appendChild( renderer.domElement );
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stats = new Stats();
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container.appendChild( stats.dom );
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scene = new THREE.Scene();
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camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 1000 );
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camera.position.z = 120;
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const controls = new OrbitControls( camera, renderer.domElement );
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controls.minDistance = 50;
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controls.maxDistance = 200;
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scene.add( new THREE.AmbientLight( 0x443333 ) );
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const dirLight1 = new THREE.DirectionalLight( 0xffddcc, 1 );
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dirLight1.position.set( 1, 0.75, 0.5 );
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scene.add( dirLight1 );
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const dirLight2 = new THREE.DirectionalLight( 0xccccff, 1 );
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dirLight2.position.set( - 1, 0.75, - 0.5 );
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scene.add( dirLight2 );
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const geometry = new THREE.BufferGeometry();
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geometry.setFromPoints( [ new THREE.Vector3(), new THREE.Vector3() ] );
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line = new THREE.Line( geometry, new THREE.LineBasicMaterial() );
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scene.add( line );
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loadLeePerrySmith();
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raycaster = new THREE.Raycaster();
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mouseHelper = new THREE.Mesh( new THREE.BoxGeometry( 1, 1, 10 ), new THREE.MeshNormalMaterial() );
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mouseHelper.visible = false;
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scene.add( mouseHelper );
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window.addEventListener( 'resize', onWindowResize );
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let moved = false;
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controls.addEventListener( 'change', function () {
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moved = true;
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} );
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window.addEventListener( 'pointerdown', function () {
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moved = false;
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} );
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window.addEventListener( 'pointerup', function ( event ) {
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if ( moved === false ) {
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checkIntersection( event.clientX, event.clientY );
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if ( intersection.intersects ) shoot();
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}
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} );
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window.addEventListener( 'pointermove', onPointerMove );
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function onPointerMove( event ) {
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if ( event.isPrimary ) {
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checkIntersection( event.clientX, event.clientY );
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}
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}
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function checkIntersection( x, y ) {
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if ( mesh === undefined ) return;
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mouse.x = ( x / window.innerWidth ) * 2 - 1;
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mouse.y = - ( y / window.innerHeight ) * 2 + 1;
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raycaster.setFromCamera( mouse, camera );
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raycaster.intersectObject( mesh, false, intersects );
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if ( intersects.length > 0 ) {
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const p = intersects[ 0 ].point;
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mouseHelper.position.copy( p );
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intersection.point.copy( p );
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const n = intersects[ 0 ].face.normal.clone();
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n.transformDirection( mesh.matrixWorld );
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n.multiplyScalar( 10 );
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n.add( intersects[ 0 ].point );
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intersection.normal.copy( intersects[ 0 ].face.normal );
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mouseHelper.lookAt( n );
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const positions = line.geometry.attributes.position;
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positions.setXYZ( 0, p.x, p.y, p.z );
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positions.setXYZ( 1, n.x, n.y, n.z );
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positions.needsUpdate = true;
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intersection.intersects = true;
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intersects.length = 0;
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} else {
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intersection.intersects = false;
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}
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}
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const gui = new GUI();
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gui.add( params, 'minScale', 1, 30 );
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gui.add( params, 'maxScale', 1, 30 );
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gui.add( params, 'rotate' );
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gui.add( params, 'clear' );
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gui.open();
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}
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function loadLeePerrySmith() {
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const loader = new GLTFLoader();
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loader.load( 'models/gltf/LeePerrySmith/LeePerrySmith.glb', function ( gltf ) {
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mesh = gltf.scene.children[ 0 ];
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mesh.material = new THREE.MeshPhongMaterial( {
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specular: 0x111111,
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map: textureLoader.load( 'models/gltf/LeePerrySmith/Map-COL.jpg' ),
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specularMap: textureLoader.load( 'models/gltf/LeePerrySmith/Map-SPEC.jpg' ),
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normalMap: textureLoader.load( 'models/gltf/LeePerrySmith/Infinite-Level_02_Tangent_SmoothUV.jpg' ),
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shininess: 25
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} );
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scene.add( mesh );
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mesh.scale.set( 10, 10, 10 );
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} );
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}
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function shoot() {
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position.copy( intersection.point );
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orientation.copy( mouseHelper.rotation );
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if ( params.rotate ) orientation.z = Math.random() * 2 * Math.PI;
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const scale = params.minScale + Math.random() * ( params.maxScale - params.minScale );
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size.set( scale, scale, scale );
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const material = decalMaterial.clone();
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material.color.setHex( Math.random() * 0xffffff );
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const m = new THREE.Mesh( new DecalGeometry( mesh, position, orientation, size ), material );
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decals.push( m );
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scene.add( m );
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}
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function removeDecals() {
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decals.forEach( function ( d ) {
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scene.remove( d );
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} );
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decals.length = 0;
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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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renderer.setSize( window.innerWidth, window.innerHeight );
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}
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function animate() {
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requestAnimationFrame( animate );
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renderer.render( scene, camera );
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stats.update();
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}
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</script>
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</body>
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</html>
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