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291 lines
7.6 KiB
291 lines
7.6 KiB
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - lights - rect area light</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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<style>
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body {
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background-color: #000;
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margin: 0px;
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overflow: hidden;
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}
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#info {
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position: absolute;
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top: 0px; width: 100%;
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color: #ffffff;
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padding: 5px;
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font-family: Monospace;
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font-size: 13px;
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text-align: center;
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}
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a {
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color: #ff0080;
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text-decoration: none;
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}
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a:hover {
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color: #0080ff;
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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="http://threejs.org" target="_blank" rel="noopener">three.js</a> - Demo of RectAreaLight - by <a href="http://github.com/abelnation" target="_blank" rel="noopener">abelnation</a><br />
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Click and drag to move OrbitControls.<br />
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<br />
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</div>
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<script src="../build/three.js"></script>
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<script src="js/lights/RectAreaLightUniformsLib.js"></script>
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<script src="js/controls/OrbitControls.js"></script>
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<script src="js/libs/dat.gui.min.js"></script>
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<script src="js/libs/stats.min.js"></script>
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<script src="js/WebGL.js"></script>
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<script>
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if ( WEBGL.isWebGLAvailable() === false ) {
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document.body.appendChild( WEBGL.getWebGLErrorMessage() );
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}
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var renderer, scene, camera;
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var origin = new THREE.Vector3();
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var rectLight;
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var param = {};
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var stats;
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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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renderer.shadowMap.enabled = true;
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renderer.shadowMap.type = THREE.PCFSoftShadowMap;
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renderer.gammaInput = true;
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renderer.gammaOutput = true;
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document.body.appendChild( renderer.domElement );
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// Check for float-RT support
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// TODO (abelnation): figure out fall-back for float textures
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if ( ! renderer.extensions.get( 'OES_texture_float' ) ) {
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alert( 'OES_texture_float not supported' );
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throw 'missing webgl extension';
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}
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if ( ! renderer.extensions.get( 'OES_texture_float_linear' ) ) {
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alert( 'OES_texture_float_linear not supported' );
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throw 'missing webgl extension';
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}
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camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 1000 );
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camera.position.set( 0, 20, 35 );
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scene = new THREE.Scene();
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var ambient = new THREE.AmbientLight( 0xffffff, 0.1 );
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scene.add( ambient );
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rectLight = new THREE.RectAreaLight( 0xffffff, 1, 10, 10 );
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rectLight.position.set( 5, 5, 0 );
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scene.add( rectLight );
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var rectLightMesh = new THREE.Mesh( new THREE.PlaneBufferGeometry(), new THREE.MeshBasicMaterial( { side: THREE.BackSide } ) );
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rectLightMesh.scale.x = rectLight.width;
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rectLightMesh.scale.y = rectLight.height;
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rectLight.add( rectLightMesh );
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var rectLightMeshBack = new THREE.Mesh( new THREE.PlaneBufferGeometry(), new THREE.MeshBasicMaterial( { color: 0x080808 } ) );
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rectLightMesh.add( rectLightMeshBack );
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var geoFloor = new THREE.BoxBufferGeometry( 2000, 0.1, 2000 );
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var matStdFloor = new THREE.MeshStandardMaterial( { color: 0x808080, roughness: 0, metalness: 0 } );
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var mshStdFloor = new THREE.Mesh( geoFloor, matStdFloor );
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scene.add( mshStdFloor );
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var matStdObjects = new THREE.MeshStandardMaterial( { color: 0xA00000, roughness: 0, metalness: 0 } );
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var geoBox = new THREE.BoxBufferGeometry( Math.PI, Math.sqrt( 2 ), Math.E );
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var mshStdBox = new THREE.Mesh( geoBox, matStdObjects );
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mshStdBox.position.set( 0, 5, 0 );
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mshStdBox.rotation.set( 0, Math.PI / 2.0, 0 );
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mshStdBox.castShadow = true;
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mshStdBox.receiveShadow = true;
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scene.add( mshStdBox );
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var geoSphere = new THREE.SphereBufferGeometry( 1.5, 32, 32 );
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var mshStdSphere = new THREE.Mesh( geoSphere, matStdObjects );
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mshStdSphere.position.set( - 5, 5, 0 );
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mshStdSphere.castShadow = true;
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mshStdSphere.receiveShadow = true;
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scene.add( mshStdSphere );
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var geoKnot = new THREE.TorusKnotBufferGeometry( 1.5, 0.5, 100, 16 );
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var mshStdKnot = new THREE.Mesh( geoKnot, matStdObjects );
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mshStdKnot.position.set( 5, 5, 0 );
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mshStdKnot.castShadow = true;
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mshStdKnot.receiveShadow = true;
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scene.add( mshStdKnot );
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var controls = new THREE.OrbitControls( camera, renderer.domElement );
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controls.target.copy( mshStdBox.position );
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controls.update();
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// GUI
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var gui = new dat.GUI( { width: 300 } );
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gui.open();
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param = {
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motion: true,
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width: rectLight.width,
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height: rectLight.height,
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color: rectLight.color.getHex(),
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intensity: rectLight.intensity,
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'ambient': ambient.intensity,
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'floor color': matStdFloor.color.getHex(),
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'object color': matStdObjects.color.getHex(),
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'roughness': matStdFloor.roughness,
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'metalness': matStdFloor.metalness
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};
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gui.add( param, 'motion' );
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var lightFolder = gui.addFolder( 'Light' );
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lightFolder.add( param, 'width', 1, 20 ).step( 0.1 ).onChange( function ( val ) {
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rectLight.width = val;
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rectLightMesh.scale.x = val;
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} );
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lightFolder.add( param, 'height', 1, 20 ).step( 0.1 ).onChange( function ( val ) {
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rectLight.height = val;
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rectLightMesh.scale.y = val;
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} );
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lightFolder.addColor( param, 'color' ).onChange( function ( val ) {
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rectLight.color.setHex( val );
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rectLightMesh.material.color.copy( rectLight.color ).multiplyScalar( rectLight.intensity );
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} );
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lightFolder.add( param, 'intensity', 0.0, 4.0 ).step( 0.01 ).onChange( function ( val ) {
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rectLight.intensity = val;
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rectLightMesh.material.color.copy( rectLight.color ).multiplyScalar( rectLight.intensity );
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} );
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lightFolder.add( param, 'ambient', 0.0, 0.2 ).step( 0.01 ).onChange( function ( val ) {
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ambient.intensity = val;
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} );
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lightFolder.open();
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var standardFolder = gui.addFolder( 'Standard Material' );
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standardFolder.addColor( param, 'floor color' ).onChange( function ( val ) {
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matStdFloor.color.setHex( val );
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} );
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standardFolder.addColor( param, 'object color' ).onChange( function ( val ) {
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matStdObjects.color.setHex( val );
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} );
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standardFolder.add( param, 'roughness', 0.0, 1.0 ).step( 0.01 ).onChange( function ( val ) {
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matStdObjects.roughness = val;
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matStdFloor.roughness = val;
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} );
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// TODO (abelnation): use env map to reflect metal property
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standardFolder.add( param, 'metalness', 0.0, 1.0 ).step( 0.01 ).onChange( function ( val ) {
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matStdObjects.metalness = val;
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matStdFloor.metalness = val;
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} );
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standardFolder.open();
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// TODO: rect area light distance
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// TODO: rect area light decay
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//
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window.addEventListener( 'resize', onResize, false );
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stats = new Stats();
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document.body.appendChild( stats.dom );
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}
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function onResize() {
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renderer.setSize( window.innerWidth, window.innerHeight );
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camera.aspect = ( window.innerWidth / window.innerHeight );
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camera.updateProjectionMatrix();
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}
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function animate() {
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requestAnimationFrame( animate );
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if ( param.motion ) {
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var t = ( Date.now() / 2000 );
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// move light in circle around center
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// change light height with sine curve
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var r = 15.0;
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var lx = r * Math.cos( t );
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var lz = r * Math.sin( t );
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var ly = 5.0 + 5.0 * Math.sin( t / 3.0 );
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rectLight.position.set( lx, ly, lz );
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rectLight.lookAt( origin );
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}
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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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