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173 lines
4.0 KiB
173 lines
4.0 KiB
3 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 - clipIntersection</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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<!-- 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 { 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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let camera, scene, renderer;
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const params = {
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clipIntersection: true,
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planeConstant: 0,
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showHelpers: false
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};
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const clipPlanes = [
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new THREE.Plane( new THREE.Vector3( 1, 0, 0 ), 0 ),
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new THREE.Plane( new THREE.Vector3( 0, - 1, 0 ), 0 ),
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new THREE.Plane( new THREE.Vector3( 0, 0, - 1 ), 0 )
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];
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init();
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render();
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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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renderer.localClippingEnabled = true;
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document.body.appendChild( renderer.domElement );
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scene = new THREE.Scene();
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camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 200 );
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camera.position.set( - 1.5, 2.5, 3.0 );
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const controls = new OrbitControls( camera, renderer.domElement );
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controls.addEventListener( 'change', render ); // use only if there is no animation loop
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controls.minDistance = 1;
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controls.maxDistance = 10;
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controls.enablePan = false;
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const light = new THREE.HemisphereLight( 0xffffff, 0x080808, 1.5 );
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light.position.set( - 1.25, 1, 1.25 );
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scene.add( light );
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// const helper = new THREE.CameraHelper( light.shadow.camera );
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// scene.add( helper );
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//
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const group = new THREE.Group();
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for ( let i = 1; i <= 30; i += 2 ) {
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const geometry = new THREE.SphereGeometry( i / 30, 48, 24 );
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const material = new THREE.MeshLambertMaterial( {
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color: new THREE.Color().setHSL( Math.random(), 0.5, 0.5 ),
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side: THREE.DoubleSide,
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clippingPlanes: clipPlanes,
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clipIntersection: params.clipIntersection
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} );
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group.add( new THREE.Mesh( geometry, material ) );
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}
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scene.add( group );
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// helpers
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const helpers = new THREE.Group();
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helpers.add( new THREE.PlaneHelper( clipPlanes[ 0 ], 2, 0xff0000 ) );
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helpers.add( new THREE.PlaneHelper( clipPlanes[ 1 ], 2, 0x00ff00 ) );
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helpers.add( new THREE.PlaneHelper( clipPlanes[ 2 ], 2, 0x0000ff ) );
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helpers.visible = false;
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scene.add( helpers );
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// gui
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const gui = new GUI();
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gui.add( params, 'clipIntersection' ).name( 'clip intersection' ).onChange( function ( value ) {
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const children = group.children;
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for ( let i = 0; i < children.length; i ++ ) {
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children[ i ].material.clipIntersection = value;
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}
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render();
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} );
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gui.add( params, 'planeConstant', - 1, 1 ).step( 0.01 ).name( 'plane constant' ).onChange( function ( value ) {
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for ( let j = 0; j < clipPlanes.length; j ++ ) {
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clipPlanes[ j ].constant = value;
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}
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render();
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} );
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gui.add( params, 'showHelpers' ).name( 'show helpers' ).onChange( function ( value ) {
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helpers.visible = value;
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render();
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} );
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//
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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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renderer.setSize( window.innerWidth, window.innerHeight );
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render();
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}
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function render() {
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renderer.render( scene, camera );
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}
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</script>
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</body>
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</html>
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