javascript
/
three.js
mirror de https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - lights - spot light</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<style>
			body {
				background-color: #000;
				margin: 0px;
				overflow: hidden;
			}

			#info {
				position: absolute;
				top: 0px; width: 100%;
				color: #ffffff;
				padding: 5px;
				font-family: Monospace;
				font-size: 13px;
				text-align: center;
			}

			a {
				color: #ff0080;
				text-decoration: none;
			}

			a:hover {
				color: #0080ff;
			}
		</style>
	</head>
	<body>

		<div id="container"></div>
		<div id="info">
			<a href="http://threejs.org" target="_blank">three.js</a> - This animates 3 Spot Lights - by <a href="http://master-domain.com" target="_blank">Master James</a><br />
			Orbit Controls are available to navigate. Click to set random color CTRL-Click for White.<br />
			Where the lights converge to make white light the shadows will appear as C M Y from light color pairing.
		</div>

		<script src="../build/three.js"></script>
		<script src="../examples/js/libs/dat.gui.min.js"></script>
		<script src="../examples/js/controls/OrbitControls.js"></script>
		<script src="js/Detector.js"></script>

		<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.2/TweenMax.min.js"></script>

		<script>
			var stats, container = document.getElementById( 'container' );

			if ( ! Detector.webgl ) Detector.addGetWebGLMessage();

			var rnd = new THREE.WebGLRenderer();
			var cam = new THREE.PerspectiveCamera(34, window.innerWidth / window.innerHeight, 0.1, 20000);
			var orb = new THREE.OrbitControls(cam, rnd.domElement);

			var scn = new THREE.Scene();
			var matFloor = new THREE.MeshPhongMaterial();
			var matBox = new THREE.MeshPhongMaterial();
			var geoFloor = new THREE.BoxGeometry(2000, 0.1, 2000);
			var geoBox = new THREE.BoxGeometry(Math.PI, Math.sqrt(2), Math.E);
			var mshFloor = new THREE.Mesh(geoFloor, matFloor);
			var mshBox = new THREE.Mesh(geoBox, matBox);
			var amb = new THREE.AmbientLight(0x121422);
			var spt1 = createSpotlight( 0xFF7F00 );
			var spt2 = createSpotlight( 0x00FF7F );
			var spt3 = createSpotlight( 0x7F00FF );
			var lightHelper1, lightHelper2, lightHelper3;
			var ray = new THREE.Raycaster();
			var mouseDown = new THREE.Vector2();
			var mouse = new THREE.Vector2();

			function init() {

				rnd.shadowMap.enabled = true;
				rnd.shadowMap.type = THREE.PCFSoftShadowMap;
				rnd.gammaInput = true;
				rnd.gammaOutput = true;
				rnd.antialias = true;
				rnd.domElement.addEventListener('mousedown', onDocumentClick);
				rnd.domElement.addEventListener('mouseup', onDocumentClick);

				cam.position.set(38, 20, -32);

				spt1.position.set(15, 40, 45);
				spt2.position.set(0, 40, 35);
				spt3.position.set(-15, 40, 45);

				lightHelper1 = new THREE.SpotLightHelper( spt1 );
				lightHelper2 = new THREE.SpotLightHelper( spt2 );
				lightHelper3 = new THREE.SpotLightHelper( spt3 );

				matFloor.color.set( 0x808080 );

				mshFloor.receiveShadow = true;
				mshFloor.position.set(0, -0.05, 0);

				randomColor( matBox );
				matBox.opacity = 0.8;
				mshBox.castShadow = true;
				mshBox.receiveShadow = true;
				mshBox.position.set(0, 5, 0);

				scn.add(cam);
				scn.add(mshFloor);
				scn.add(mshBox);
				scn.add(amb);
				scn.add( spt1 );
				scn.add( spt1.shadowCameraHelper );
				scn.add( spt2 );
				scn.add( spt2.shadowCameraHelper );
				scn.add( spt3 );
				scn.add( spt3.shadowCameraHelper );
				scn.add( new THREE.AxisHelper( 7 ) );
				scn.add( lightHelper1, lightHelper2, lightHelper3 );

				document.body.appendChild(rnd.domElement);
				onResize();
				window.addEventListener('resize', onResize, false);

				orb.addEventListener('change', render);
				orb.object.position.set(46, 22, -21);
				orb.target.set(-6, 7, 2);
				orb.maxPolarAngle = (Math.PI / 2);
				orb.update();
			};

			function createSpotlight( color ) {
				var newObj = new THREE.SpotLight( color, 2 );
				newObj.castShadow = true;
				newObj.angle = 0.3;
				newObj.penumbra = 0.2;
				newObj.decay = 2;
				newObj.distance = 50;
				newObj.shadow.mapSize.width = 1024;
				newObj.shadow.mapSize.height = 1024;

				return newObj;
			};

			function onResize() {
				rnd.setSize(window.innerWidth, window.innerHeight);
				cam.aspect = (window.innerWidth / window.innerHeight);
				cam.updateProjectionMatrix();
			};

			function animate(rate) {
				rate = rate || 6;
				if ( rate < 0.01 ) rate = 0.01;
				else if ( rate > 1000 ) rate = 1000;
				var targ1 = { x: ((Math.random() * 30) - 15), y: ((Math.random() * 10) + 15), z: ((Math.random() * 30) - 15) };
				TweenMax.to(spt1.position, rate / 3, targ1);
				TweenMax.to(spt1, rate / 2, { angle: ( (Math.random() * 0.7) + 0.1 ), penumbra: ( Math.random() + 1 ), position: targ1 } );

				var targ2 = { x: ((Math.random() * 30) - 15), y: ((Math.random() * 10) + 15), z: ((Math.random() * 30) - 15) };
				TweenMax.to(spt2.position, rate, targ2);
				TweenMax.to(spt2, rate / 3, { angle: ( (Math.random() * 0.7) + 0.1 ), penumbra: ( Math.random() + 1 ), position: targ2 } );

				var targ3 = { x: ((Math.random() * 30) - 15), y: ((Math.random() * 10) + 15), z: ((Math.random() * 30) - 15) };
				TweenMax.to(spt3.position, rate / 2, targ3);
				TweenMax.to(spt3, rate, { angle: ( (Math.random() * 0.7) + 0.1 ), penumbra: ( Math.random() + 1 ), position: targ3 } );

				setTimeout(function() { animate(rate); }, rate * 1000);
			};

			function render( /* time */ ) {
				if ( lightHelper1 ) lightHelper1.update();
				if ( lightHelper2 ) lightHelper2.update();
				if ( lightHelper3 ) lightHelper3.update();

				rnd.render(scn, cam);

				window.requestAnimationFrame(render);

			};

			function onDocumentClick( event ) {

				event.preventDefault();

				var rndDom = rnd.domElement;

				if( event.type === 'mousedown' ) {

					mouseDown.x = ( event.clientX / rndDom.clientWidth ) * 2 - 1;

					mouseDown.y = - ( event.clientY / rndDom.clientHeight ) * 2 + 1;

				}
				else {

					mouse.x = ( event.clientX / rndDom.clientWidth ) * 2 - 1;

					mouse.y = - ( event.clientY / rndDom.clientHeight ) * 2 + 1;

					if (mouseDown.distanceTo(mouse) < 0.0075) {

						ray.setFromCamera( mouse, cam );

						var found = ray.intersectObjects( [ mshBox, mshFloor ] );

						if ( found.length > 0 ) {

							if( event.ctrlKey === false ) randomColor( found[0].object );

							else found[0].object.material.color.set( 0xffffff );

							render();

						}

					}

				}

			}

			function randomColor( target ) {

				if ( target !== undefined ) {

					if ( target.material !== undefined ) target = target.material;

					if ( target.color !== undefined ) {

						target.color.setHex( 0xffffff * Math.random() );

					}
				}

			}

			init();

			render();

			animate(4.5);

		</script>
	</body>
</html>