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217 lines
5.0 KiB
HTML
217 lines
5.0 KiB
HTML
<!-- Licensed under a BSD license. See license.html for license -->
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
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<title>Three.js - Shadows - Directional Light w/CameraHelper</title>
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<style>
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html, body {
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margin: 0;
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height: 100%;
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}
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#c {
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width: 100%;
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height: 100%;
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display: block;
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}
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</style>
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</head>
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<body>
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<canvas id="c"></canvas>
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</body>
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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/": "../../examples/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 { 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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function main() {
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const canvas = document.querySelector( '#c' );
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const renderer = new THREE.WebGLRenderer( { antialias: true, canvas } );
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renderer.shadowMap.enabled = true;
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const fov = 45;
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const aspect = 2; // the canvas default
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const near = 0.1;
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const far = 100;
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const camera = new THREE.PerspectiveCamera( fov, aspect, near, far );
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camera.position.set( 0, 10, 20 );
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const controls = new OrbitControls( camera, canvas );
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controls.target.set( 0, 5, 0 );
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controls.update();
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const scene = new THREE.Scene();
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scene.background = new THREE.Color( 'black' );
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{
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const planeSize = 40;
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const loader = new THREE.TextureLoader();
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const texture = loader.load( 'resources/images/checker.png' );
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texture.wrapS = THREE.RepeatWrapping;
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texture.wrapT = THREE.RepeatWrapping;
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texture.magFilter = THREE.NearestFilter;
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texture.colorSpace = THREE.SRGBColorSpace;
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const repeats = planeSize / 2;
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texture.repeat.set( repeats, repeats );
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const planeGeo = new THREE.PlaneGeometry( planeSize, planeSize );
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const planeMat = new THREE.MeshPhongMaterial( {
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map: texture,
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side: THREE.DoubleSide,
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} );
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const mesh = new THREE.Mesh( planeGeo, planeMat );
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mesh.receiveShadow = true;
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mesh.rotation.x = Math.PI * - .5;
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scene.add( mesh );
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}
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{
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const cubeSize = 4;
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const cubeGeo = new THREE.BoxGeometry( cubeSize, cubeSize, cubeSize );
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const cubeMat = new THREE.MeshPhongMaterial( { color: '#8AC' } );
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const mesh = new THREE.Mesh( cubeGeo, cubeMat );
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mesh.castShadow = true;
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mesh.receiveShadow = true;
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mesh.position.set( cubeSize + 1, cubeSize / 2, 0 );
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scene.add( mesh );
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}
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{
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const sphereRadius = 3;
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const sphereWidthDivisions = 32;
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const sphereHeightDivisions = 16;
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const sphereGeo = new THREE.SphereGeometry( sphereRadius, sphereWidthDivisions, sphereHeightDivisions );
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const sphereMat = new THREE.MeshPhongMaterial( { color: '#CA8' } );
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const mesh = new THREE.Mesh( sphereGeo, sphereMat );
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mesh.castShadow = true;
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mesh.receiveShadow = true;
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mesh.position.set( - sphereRadius - 1, sphereRadius + 2, 0 );
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scene.add( mesh );
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}
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class ColorGUIHelper {
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constructor( object, prop ) {
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this.object = object;
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this.prop = prop;
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}
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get value() {
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return `#${this.object[ this.prop ].getHexString()}`;
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}
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set value( hexString ) {
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this.object[ this.prop ].set( hexString );
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}
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}
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function makeXYZGUI( gui, vector3, name, onChangeFn ) {
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const folder = gui.addFolder( name );
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folder.add( vector3, 'x', - 10, 10 ).onChange( onChangeFn );
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folder.add( vector3, 'y', 0, 10 ).onChange( onChangeFn );
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folder.add( vector3, 'z', - 10, 10 ).onChange( onChangeFn );
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folder.open();
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}
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{
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const color = 0xFFFFFF;
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const intensity = 3;
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const light = new THREE.DirectionalLight( color, intensity );
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light.castShadow = true;
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light.position.set( 0, 10, 0 );
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light.target.position.set( - 4, 0, - 4 );
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scene.add( light );
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scene.add( light.target );
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const cameraHelper = new THREE.CameraHelper( light.shadow.camera );
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scene.add( cameraHelper );
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const helper = new THREE.DirectionalLightHelper( light );
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scene.add( helper );
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const onChange = () => {
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light.target.updateMatrixWorld();
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helper.update();
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};
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onChange();
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const gui = new GUI();
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gui.addColor( new ColorGUIHelper( light, 'color' ), 'value' ).name( 'color' );
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gui.add( light, 'intensity', 0, 10, 0.01 );
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makeXYZGUI( gui, light.position, 'position', onChange );
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makeXYZGUI( gui, light.target.position, 'target', onChange );
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}
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function resizeRendererToDisplaySize( renderer ) {
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const canvas = renderer.domElement;
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const width = canvas.clientWidth;
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const height = canvas.clientHeight;
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const needResize = canvas.width !== width || canvas.height !== height;
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if ( needResize ) {
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renderer.setSize( width, height, false );
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}
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return needResize;
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}
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function render() {
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resizeRendererToDisplaySize( renderer );
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{
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const canvas = renderer.domElement;
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camera.aspect = canvas.clientWidth / canvas.clientHeight;
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camera.updateProjectionMatrix();
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}
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renderer.render( scene, camera );
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requestAnimationFrame( render );
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}
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requestAnimationFrame( render );
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}
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main();
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</script>
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</html>
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