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229 lines
5.9 KiB
HTML
229 lines
5.9 KiB
HTML
2 months 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 geometry - csg</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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<style>
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body {
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background-color: #eeeeee;
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color: #333;
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}
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a {
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color: #009688;
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text-decoration: underline;
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}
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</style>
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</head>
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<body>
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<div id="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> bvh csg - <a href="https://github.com/gkjohnson/three-bvh-csg" target="_blank" rel="noopener">three-bvh-csg</a><br/>
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See <a href="https://github.com/gkjohnson/three-bvh-csg" target="_blank" rel="noopener">main project repository</a> for more information and examples on constructive solid geometry.
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</div>
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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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"three-mesh-bvh": "https://cdn.jsdelivr.net/npm/three-mesh-bvh@0.7.3/build/index.module.js",
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"three-bvh-csg": "https://cdn.jsdelivr.net/npm/three-bvh-csg@0.0.16/build/index.module.js"
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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 { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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import { SUBTRACTION, INTERSECTION, ADDITION, Brush, Evaluator } from 'three-bvh-csg';
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let stats;
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let camera, scene, renderer;
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let baseBrush, brush;
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let core;
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let result, evaluator, wireframe;
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const params = {
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operation: SUBTRACTION,
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useGroups: true,
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wireframe: false,
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};
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init();
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function init() {
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// environment
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camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 100 );
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camera.position.set( - 1, 1, 1 ).normalize().multiplyScalar( 10 );
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scene = new THREE.Scene();
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scene.background = new THREE.Color( 0xfce4ec );
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// lights
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const ambient = new THREE.HemisphereLight( 0xffffff, 0xbfd4d2, 3 );
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scene.add( ambient );
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const directionalLight = new THREE.DirectionalLight( 0xffffff, 0.3 );
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directionalLight.position.set( 1, 4, 3 ).multiplyScalar( 3 );
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directionalLight.castShadow = true;
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directionalLight.shadow.mapSize.setScalar( 2048 );
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directionalLight.shadow.bias = - 1e-4;
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directionalLight.shadow.normalBias = 1e-4;
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scene.add( directionalLight );
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// renderer
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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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renderer.setAnimationLoop( animate );
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renderer.shadowMap.enabled = true;
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renderer.shadowMap.type = THREE.PCFSoftShadowMap;
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document.body.appendChild( renderer.domElement );
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stats = new Stats();
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document.body.appendChild( stats.dom );
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// add shadow plane
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const plane = new THREE.Mesh(
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new THREE.PlaneGeometry(),
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new THREE.ShadowMaterial( {
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color: 0xd81b60,
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transparent: true,
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opacity: 0.075,
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side: THREE.DoubleSide,
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} ),
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);
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plane.position.y = - 3;
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plane.rotation.x = - Math.PI / 2;
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plane.scale.setScalar( 10 );
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plane.receiveShadow = true;
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scene.add( plane );
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// create brushes
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evaluator = new Evaluator();
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baseBrush = new Brush(
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new THREE.IcosahedronGeometry( 2, 3 ),
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new THREE.MeshStandardMaterial( {
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flatShading: true,
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polygonOffset: true,
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polygonOffsetUnits: 1,
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polygonOffsetFactor: 1,
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} ),
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);
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brush = new Brush(
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new THREE.CylinderGeometry( 1, 1, 5, 45 ),
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new THREE.MeshStandardMaterial( {
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color: 0x80cbc4,
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polygonOffset: true,
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polygonOffsetUnits: 1,
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polygonOffsetFactor: 1,
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} ),
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);
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core = new Brush(
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new THREE.IcosahedronGeometry( 0.15, 1 ),
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new THREE.MeshStandardMaterial( {
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flatShading: true,
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color: 0xff9800,
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emissive: 0xff9800,
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emissiveIntensity: 0.35,
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polygonOffset: true,
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polygonOffsetUnits: 1,
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polygonOffsetFactor: 1,
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} ),
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);
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core.castShadow = true;
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scene.add( core );
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// create wireframe
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wireframe = new THREE.Mesh(
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undefined,
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new THREE.MeshBasicMaterial( { color: 0x009688, wireframe: true } ),
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);
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scene.add( wireframe );
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// controls
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const controls = new OrbitControls( camera, renderer.domElement );
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controls.minDistance = 5;
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controls.maxDistance = 75;
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// set up gui
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const gui = new GUI();
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gui.add( params, 'operation', { SUBTRACTION, INTERSECTION, ADDITION } );
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gui.add( params, 'wireframe' );
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gui.add( params, 'useGroups' );
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window.addEventListener( 'resize', onWindowResize );
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onWindowResize();
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}
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function updateCSG() {
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evaluator.useGroups = params.useGroups;
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result = evaluator.evaluate( baseBrush, brush, params.operation, result );
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result.castShadow = true;
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result.receiveShadow = true;
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scene.add( result );
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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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// update the transforms
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const t = window.performance.now() + 9000;
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baseBrush.rotation.x = t * 0.0001;
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baseBrush.rotation.y = t * 0.00025;
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baseBrush.rotation.z = t * 0.0005;
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baseBrush.updateMatrixWorld();
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brush.rotation.x = t * - 0.0002;
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brush.rotation.y = t * - 0.0005;
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brush.rotation.z = t * - 0.001;
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const s = 0.5 + 0.5 * ( 1 + Math.sin( t * 0.001 ) );
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brush.scale.set( s, 1, s );
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brush.updateMatrixWorld();
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// update the csg
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updateCSG();
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wireframe.geometry = result.geometry;
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wireframe.visible = params.wireframe;
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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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