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199 lines
4.9 KiB
199 lines
4.9 KiB
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - lights - spot 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> - This animates 3 Spot Lights - by <a href="http://master-domain.com" target="_blank" rel="noopener">Master James</a><br />
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Orbit Controls are available to navigate.<br />
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Where the lights converge to make white light the shadows will appear as C M Y from light color pairing.
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</div>
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<script src="../build/three.js"></script>
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<script src="js/libs/dat.gui.min.js"></script>
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<script src="js/libs/tween.min.js"></script>
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<script src="js/controls/OrbitControls.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 = new THREE.WebGLRenderer();
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renderer.setPixelRatio( window.devicePixelRatio );
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var camera = new THREE.PerspectiveCamera( 35, window.innerWidth / window.innerHeight, 1, 2000 );
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var controls = new THREE.OrbitControls( camera, renderer.domElement );
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var scene = new THREE.Scene();
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var matFloor = new THREE.MeshPhongMaterial();
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var matBox = new THREE.MeshPhongMaterial( { color: 0xaaaaaa } );
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var geoFloor = new THREE.PlaneBufferGeometry( 2000, 2000 );
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var geoBox = new THREE.BoxBufferGeometry( 3, 1, 2 );
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var mshFloor = new THREE.Mesh( geoFloor, matFloor );
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mshFloor.rotation.x = - Math.PI * 0.5;
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var mshBox = new THREE.Mesh( geoBox, matBox );
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var ambient = new THREE.AmbientLight( 0x111111 );
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var spotLight1 = createSpotlight( 0xFF7F00 );
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var spotLight2 = createSpotlight( 0x00FF7F );
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var spotLight3 = createSpotlight( 0x7F00FF );
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var lightHelper1, lightHelper2, lightHelper3;
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function init() {
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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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camera.position.set( 46, 22, - 21 );
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spotLight1.position.set( 15, 40, 45 );
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spotLight2.position.set( 0, 40, 35 );
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spotLight3.position.set( - 15, 40, 45 );
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lightHelper1 = new THREE.SpotLightHelper( spotLight1 );
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lightHelper2 = new THREE.SpotLightHelper( spotLight2 );
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lightHelper3 = new THREE.SpotLightHelper( spotLight3 );
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matFloor.color.set( 0x808080 );
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mshFloor.receiveShadow = true;
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mshFloor.position.set( 0, - 0.05, 0 );
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mshBox.castShadow = true;
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mshBox.receiveShadow = true;
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mshBox.position.set( 0, 5, 0 );
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scene.add( mshFloor );
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scene.add( mshBox );
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scene.add( ambient );
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scene.add( spotLight1, spotLight2, spotLight3 );
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scene.add( lightHelper1, lightHelper2, lightHelper3 );
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document.body.appendChild( renderer.domElement );
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onResize();
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window.addEventListener( 'resize', onResize, false );
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controls.target.set( 0, 7, 0 );
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controls.maxPolarAngle = Math.PI / 2;
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controls.update();
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}
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function createSpotlight( color ) {
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var newObj = new THREE.SpotLight( color, 2 );
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newObj.castShadow = true;
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newObj.angle = 0.3;
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newObj.penumbra = 0.2;
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newObj.decay = 2;
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newObj.distance = 50;
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newObj.shadow.mapSize.width = 1024;
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newObj.shadow.mapSize.height = 1024;
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return newObj;
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}
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function onResize() {
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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 tween( light ) {
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new TWEEN.Tween( light ).to( {
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angle: ( Math.random() * 0.7 ) + 0.1,
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penumbra: Math.random() + 1
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}, Math.random() * 3000 + 2000 )
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.easing( TWEEN.Easing.Quadratic.Out ).start();
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new TWEEN.Tween( light.position ).to( {
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x: ( Math.random() * 30 ) - 15,
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y: ( Math.random() * 10 ) + 15,
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z: ( Math.random() * 30 ) - 15
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}, Math.random() * 3000 + 2000 )
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.easing( TWEEN.Easing.Quadratic.Out ).start();
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}
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function animate() {
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tween( spotLight1 );
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tween( spotLight2 );
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tween( spotLight3 );
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setTimeout( animate, 5000 );
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}
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function render() {
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TWEEN.update();
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if ( lightHelper1 ) lightHelper1.update();
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if ( lightHelper2 ) lightHelper2.update();
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if ( lightHelper3 ) lightHelper3.update();
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renderer.render( scene, camera );
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requestAnimationFrame( render );
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}
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init();
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render();
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animate();
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</script>
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</body>
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</html>
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