javascript
/
three.js
zrcadlo https://github.com/tazdij/three.js.git


			
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							<!doctype html>
<html lang="en">
	<head>
		<title>WebGL NodeMaterial</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 {
				color: #fff;
				font-family:Monospace;
				font-size:13px;
				margin: 0px;
				text-align:center;
				overflow: hidden;
			}

			#info {
				color: #fff;
				position: absolute;
				top: 10px;
				width: 100%;
				text-align: center;
				display:block;
			}

			a { color: white }
		</style>
	</head>
	<body>

		<div id="container"></div>
		<div id="info">
			<a href="http://threejs.org" target="_blank">three.js</a> - Node-Based Material
		</div>

		<script src="../build/three.min.js"></script>
		
		<script src='js/geometries/TeapotBufferGeometry.js'></script>
		<script src="js/controls/OrbitControls.js"></script>
		<script src="js/libs/dat.gui.min.js"></script>
		
		<!-- NodeMaterial Base -->
		<script src="js/materials/nodes/GLNode.js"></script>
		<script src="js/materials/nodes/RawNode.js"></script>
		<script src="js/materials/nodes/TempNode.js"></script>
		<script src="js/materials/nodes/InputNode.js"></script>
		<script src="js/materials/nodes/ConstNode.js"></script>
		<script src="js/materials/nodes/FunctionNode.js"></script>
		<script src="js/materials/nodes/FunctionCallNode.js"></script>
		<script src="js/materials/nodes/BuilderNode.js"></script>
		<script src="js/materials/nodes/LibNode.js"></script>
		<script src="js/materials/nodes/NodeMaterial.js"></script>
		
		<!-- Accessors -->
		<script src="js/materials/nodes/accessors/PositionNode.js"></script>
		<script src="js/materials/nodes/accessors/NormalNode.js"></script>
		<script src="js/materials/nodes/accessors/UVNode.js"></script>
		<script src="js/materials/nodes/accessors/ColorsNode.js"></script>
		<script src="js/materials/nodes/accessors/CameraNode.js"></script>
		<script src="js/materials/nodes/accessors/ReflectNode.js"></script>
		
		<!-- Inputs -->
		<script src="js/materials/nodes/inputs/IntNode.js"></script>
		<script src="js/materials/nodes/inputs/FloatNode.js"></script>
		<script src="js/materials/nodes/inputs/ColorNode.js"></script>
		<script src="js/materials/nodes/inputs/Vector2Node.js"></script>
		<script src="js/materials/nodes/inputs/Vector3Node.js"></script>
		<script src="js/materials/nodes/inputs/Vector4Node.js"></script>
		<script src="js/materials/nodes/inputs/TextureNode.js"></script>
		<script src="js/materials/nodes/inputs/CubeTextureNode.js"></script>
		
		<!-- Math -->
		<script src="js/materials/nodes/math/Math1Node.js"></script>
		<script src="js/materials/nodes/math/Math2Node.js"></script>
		<script src="js/materials/nodes/math/Math3Node.js"></script>
		<script src="js/materials/nodes/math/OperatorNode.js"></script>
		
		<!-- Utils -->
		<script src="js/materials/nodes/utils/SwitchNode.js"></script>
		<script src="js/materials/nodes/utils/JoinNode.js"></script>
		<script src="js/materials/nodes/utils/TimeNode.js"></script>
		<script src="js/materials/nodes/utils/RoughnessToBlinnExponentNode.js"></script>
		
		<!-- Interfaces -->
		<script src="js/materials/nodes/interfaces/PhongNode.js"></script>
		<script src="js/materials/nodes/interfaces/PhongNodeMaterial.js"></script>
		<script src="js/materials/nodes/interfaces/StandardNode.js"></script>
		<script src="js/materials/nodes/interfaces/StandardNodeMaterial.js"></script>
		
		<!-- Extras -->
		<script src="js/materials/nodes/extras/VelocityNode.js"></script>
		
		<script>

		var container = document.getElementById( 'container' );

		var renderer, scene, camera, clock = new THREE.Clock(), fov = 50;
		var teapot, mesh;
		var controls;
		var move = false;
		var gui, guiElements = [];

		var param = { example: 'standard' };

		var brick = new THREE.TextureLoader().load( 'textures/brick_diffuse.jpg' );
		var grass = new THREE.TextureLoader().load( 'textures/terrain/grasslight-big.jpg' );
		var grassNormal = new THREE.TextureLoader().load( 'textures/terrain/grasslight-big-nm.jpg' );

		var decalDiffuse = new THREE.TextureLoader().load( 'textures/decal/decal-diffuse.png' );
		decalDiffuse.wrapS = decalDiffuse.wrapT = THREE.RepeatWrapping;

		var decalNormal = new THREE.TextureLoader().load( 'textures/decal/decal-normal.jpg' );

		var cloud = new THREE.TextureLoader().load( 'textures/lava/cloud.png' );
		cloud.wrapS = cloud.wrapT = THREE.RepeatWrapping;

		var cubemap = function() {

			var path = "textures/cube/Park2/";
			var format = '.jpg';
			var urls = [
					path + 'posx' + format, path + 'negx' + format,
					path + 'posy' + format, path + 'negy' + format,
					path + 'posz' + format, path + 'negz' + format
				];

			var textureCube = new THREE.CubeTextureLoader().load( urls );
			textureCube.format = THREE.RGBFormat;

			return textureCube;

		}();

		window.addEventListener( 'load', init );

		function init() {

			renderer = new THREE.WebGLRenderer( { antialias: true } );
			renderer.setPixelRatio( window.devicePixelRatio );
			renderer.setSize( window.innerWidth, window.innerHeight );
			container.appendChild( renderer.domElement );

			scene = new THREE.Scene();

			camera = new THREE.PerspectiveCamera( fov, window.innerWidth / window.innerHeight, 1, 1000 );
			camera.position.x = 50;
			camera.position.z = - 50;
			camera.position.y = 30;
			camera.target = new THREE.Vector3();

			controls = new THREE.OrbitControls( camera, renderer.domElement );
			controls.minDistance = 50;
			controls.maxDistance = 200;

			scene.add( new THREE.AmbientLight( 0x464646 ) );

			var light = new THREE.DirectionalLight( 0xffddcc, 1 );
			light.position.set( 1, 0.75, 0.5 );
			scene.add( light );

			var light = new THREE.DirectionalLight( 0xccccff, 1 );
			light.position.set( - 1, 0.75, - 0.5 );
			scene.add( light );

			teapot = new THREE.TeapotBufferGeometry( 15, 18 );

			mesh = new THREE.Mesh( teapot );
			scene.add( mesh );

			window.addEventListener( 'resize', onWindowResize, false );

			updateMaterial();

			onWindowResize();
			animate();

		}

		function clearGui() {

			if ( gui ) gui.destroy();

			gui = new dat.GUI();

			var example = gui.add( param, 'example', {
				'basic / standard (PBR)': 'standard',
				'basic / phong': 'phong',
				'basic / layers': 'layers',
				'basic / rim': 'rim',
				'adv / fresnel': 'fresnel',
				'adv / saturation': 'saturation',
				'adv / top-bottom': 'top-bottom',
				'adv / caustic': 'caustic',
				'adv / displace': 'displace',
				'adv / camera-depth': 'camera-depth',
				'adv / soft-body': 'soft-body',
				'adv / wave': 'wave',
				'misc / smoke' : 'smoke',
				'misc / firefly' : 'firefly'
			} ).onFinishChange( function() {

				updateMaterial();

			} );

			gui.open();

		}

		function addGui( name, value, callback, isColor, min, max ) {

			var node;

			param[ name ] = value;

			if ( isColor ) {

				node = gui.addColor( param, name ).onChange( function() {

					callback( param[ name ] );

				} );

			}
			else {

				node = gui.add( param, name, min, max ).onChange( function() {

					callback( param[ name ] );

				} );

			}

			return node;

		}

		function updateMaterial() {

			move = false;

			if ( mesh.material ) mesh.material.dispose();

			var name = param.example;
			var mtl;

			clearGui();

			switch ( name ) {

				case 'phong':

					//	MATERIAL

					mtl = new THREE.PhongNodeMaterial();

					//mtl.color = // albedo color
					//mtl.alpha = // opacity (0 at 1)
					//mtl.specular = // specular color
					//mtl.shininess = // shininess (float)
					//mtl.normal = // normalmap
					//mtl.normalScale = // normalmap scale
					//mtl.emissive = // emissive color
					//mtl.ambient = // ambient color
					//mtl.shadow = // shadowmap
					//mtl.ao = // ambient occlusion
					//mtl.environment = // reflection map (CubeMap recommended)
					//mtl.reflectivity = // environment intensity
					//mtl.transform = // vertex transformation

					var mask = new THREE.SwitchNode( new THREE.TextureNode( decalDiffuse ), 'w' );

					mtl.color = new THREE.TextureNode( grass );
					mtl.specular = new THREE.FloatNode( .5 );
					mtl.shininess = new THREE.FloatNode( 15 );
					mtl.environment = new THREE.CubeTextureNode( cubemap );
					mtl.reflectivity = mask;
					mtl.normal = new THREE.TextureNode( grassNormal );
					mtl.normalScale = new THREE.Math1Node( mask, THREE.Math1Node.INVERT );

					break;

				case 'standard':

					//	MATERIAL

					mtl = new THREE.StandardNodeMaterial();

					//mtl.color = // albedo color
					//mtl.alpha = // opacity (0 at 1)
					//mtl.roughness = // roughness (float)
					//mtl.metalness = // metalness (float)
					//mtl.normal = // normalmap
					//mtl.normalScale = // normalmap scale
					//mtl.emissive = // emissive color
					//mtl.ambient = // ambient color
					//mtl.shadow = // shadowmap
					//mtl.ao = // ambient occlusion
					//mtl.environment = // reflection map (CubeMap recommended)
					//mtl.reflectivity = // environment intensity
					//mtl.transform = // vertex transformation

					var mask = new THREE.SwitchNode( new THREE.TextureNode( decalDiffuse ), 'w' );

					var normalScale = new THREE.FloatNode( .3 );

					var roughnessA = new THREE.FloatNode( .5 );
					var metalnessA = new THREE.FloatNode( .5 );

					var roughnessB = new THREE.FloatNode( 0 );
					var metalnessB = new THREE.FloatNode( 1 );

					var roughness = new THREE.Math3Node(
						roughnessA,
						roughnessB,
						mask,
						THREE.Math3Node.MIX
					);

					var metalness = new THREE.Math3Node(
						metalnessA,
						metalnessB,
						mask,
						THREE.Math3Node.MIX
					);

					var normalMask = new THREE.OperatorNode(
						new THREE.Math1Node( mask, THREE.Math1Node.INVERT ),
						normalScale,
						THREE.OperatorNode.MUL
					);

					mtl.color = new THREE.ColorNode( 0xFFFFFF );
					mtl.roughness = roughness;
					mtl.metalness = metalness;
					mtl.environment = new THREE.CubeTextureNode( cubemap );
					mtl.normal = new THREE.TextureNode( grassNormal );
					mtl.normalScale = normalMask;

					// GUI

					addGui( 'color', mtl.color.value.getHex(), function( val ) {

						mtl.color.value.setHex( val );

					}, true );

					addGui( 'roughnessA', roughnessA.number, function( val ) {

						 roughnessA.number = val;

					}, false, 0, 1 );

					addGui( 'metalnessA', metalnessA.number, function( val ) {

						metalnessA.number = val;

					}, false, 0, 1 );

					addGui( 'roughnessB', roughnessB.number, function( val ) {

						 roughnessB.number = val;

					}, false, 0, 1 );

					addGui( 'metalnessB', metalnessB.number, function( val ) {

						metalnessB.number = val;

					}, false, 0, 1 );

					addGui( 'normalScale', normalScale.number, function( val ) {

						normalScale.number = val;

					}, false, 0, 1 );

					break;

				case 'wave':

					//	MATERIAL

					mtl = new THREE.PhongNodeMaterial();

					var time = new THREE.TimeNode();
					var speed = new THREE.FloatNode( 5 );
					var scale = new THREE.FloatNode( 1 );
					var worldScale = new THREE.FloatNode( .4 );
					var colorA = new THREE.ColorNode( 0xFFFFFF );
					var colorB = new THREE.ColorNode( 0x0054df );

					var uv = new THREE.UVNode();

					var timeScale = new THREE.OperatorNode(
						time,
						speed,
						THREE.OperatorNode.MUL
					);

					var worldScl = new THREE.OperatorNode(
						new THREE.PositionNode(),
						worldScale,
						THREE.OperatorNode.MUL
					);

					var posContinuous = new THREE.OperatorNode(
						worldScl,
						timeScale,
						THREE.OperatorNode.ADD
					);

					var wave = new THREE.Math1Node( posContinuous, THREE.Math1Node.SIN );
					wave = new THREE.SwitchNode( wave, 'x' );

					var waveScale = new THREE.OperatorNode(
						wave,
						scale,
						THREE.OperatorNode.MUL
					);

					var displaceY = new THREE.JoinNode(
						new THREE.FloatNode(),
						waveScale,
						new THREE.FloatNode()
					);

					var displace = new THREE.OperatorNode(
						new THREE.NormalNode(),
						displaceY,
						THREE.OperatorNode.MUL
					);

					var blend = new THREE.OperatorNode(
						new THREE.PositionNode(),
						displaceY,
						THREE.OperatorNode.ADD
					);

					var color = new THREE.Math3Node(
						colorB,
						colorA,
						wave,
						THREE.Math3Node.MIX
					);

					mtl.color = color;
					mtl.transform = blend;

					//	GUI

					addGui( 'speed', speed.number, function( val ) {

						speed.number = val;

					}, false, 0, 10 );

					addGui( 'scale', scale.number, function( val ) {

						scale.number = val;

					}, false, 0, 3 );

					addGui( 'worldScale', worldScale.number, function( val ) {

						worldScale.number = val;

					}, false, 0, 1 );

					addGui( 'colorA', colorA.value.getHex(), function( val ) {

						colorA.value.setHex( val );

					}, true );

					addGui( 'colorB', colorB.value.getHex(), function( val ) {

						colorB.value.setHex( val );

					}, true );

					addGui( 'useNormals', false, function( val ) {

						blend.b = val ? displace : displaceY;

						mtl.build();

					} );

					break;

				case 'rim':

					//	MATERIAL

					mtl = new THREE.PhongNodeMaterial();

					var intensity = 1.3;
					var power = new THREE.FloatNode( 3 );
					var color = new THREE.ColorNode( 0xFFFFFF );

					var viewZ = new THREE.Math2Node(
						new THREE.NormalNode( THREE.NormalNode.VIEW ),
						new THREE.Vector3Node( 0, 0, - intensity ),
						THREE.Math2Node.DOT
					);

					var rim = new THREE.OperatorNode(
						viewZ,
						new THREE.FloatNode( intensity ),
						THREE.OperatorNode.ADD
					);

					var rimPower = new THREE.Math2Node(
						rim,
						power,
						THREE.Math2Node.POW
					);

					var rimColor = new THREE.OperatorNode(
						rimPower,
						color,
						THREE.OperatorNode.MUL
					);

					mtl.color = new THREE.ColorNode( 0x111111 );
					mtl.emissive = rimColor;

					//	GUI

					addGui( 'color', color.value.getHex(), function( val ) {

						color.value.setHex( val );

					}, true );

					addGui( 'intensity', intensity, function( val ) {

						intensity = val;

						viewZ.b.z = - intensity;
						rim.b.number = intensity;


					}, false, 0, 3 );

					addGui( 'power', power.number, function( val ) {

						power.number = val;

					}, false, 0, 6 );

					addGui( 'xray', false, function( val ) {

						if ( val ) {

							mtl.emissive = color;
							mtl.alpha = rimPower;
							mtl.blending = THREE.AdditiveBlending;
							mtl.depthWrite = false;

						}
						else {

							mtl.emissive = rimColor;
							mtl.alpha = null;
							mtl.blending = THREE.NormalBlending;
							mtl.depthWrite = true;

						}

						mtl.build();

					} );

					break;

				case 'fresnel':

					//	MATERIAL

					mtl = new THREE.PhongNodeMaterial();

					var reflectance = new THREE.FloatNode( 1.3 );
					var power = new THREE.FloatNode( 1 );
					var color = new THREE.CubeTextureNode( cubemap );

					var viewZ = new THREE.Math2Node(
						new THREE.NormalNode( THREE.NormalNode.VIEW ),
						new THREE.Vector3Node( 0, 0, - 1 ),
						THREE.Math2Node.DOT
					);

					var theta = new THREE.OperatorNode(
						viewZ,
						new THREE.FloatNode( 1 ),
						THREE.OperatorNode.ADD
					);

					var thetaPower = new THREE.Math2Node(
						theta,
						power,
						THREE.Math2Node.POW
					);

					var fresnel = new THREE.OperatorNode(
						reflectance,
						thetaPower,
						THREE.OperatorNode.MUL
					);

					mtl.color = new THREE.ColorNode( 0x3399FF );
					mtl.environment = color;
					mtl.reflectivity = new THREE.Math1Node( fresnel, THREE.Math1Node.SAT );

					//	GUI

					addGui( 'reflectance', reflectance.number, function( val ) {

						reflectance.number = val;

					}, false, 0, 3 );

					addGui( 'power', power.number, function( val ) {

						power.number = val;

					}, false, 0, 5 );

					break;

				case 'layers':

					//	MATERIAL

					mtl = new THREE.PhongNodeMaterial();

					var tex1 = new THREE.TextureNode( grass );
					var tex2 = new THREE.TextureNode( brick );

					var offset = new THREE.FloatNode( 0 );
					var scale = new THREE.FloatNode( 1 );
					var uv = new THREE.UVNode();

					var uvOffset = new THREE.OperatorNode(
						offset,
						uv,
						THREE.OperatorNode.ADD
					);

					var uvScale = new THREE.OperatorNode(
						uvOffset,
						scale,
						THREE.OperatorNode.MUL
					);

					var mask = new THREE.TextureNode( decalDiffuse, uvScale );
					var maskAlphaChannel = new THREE.SwitchNode( mask, 'w' );

					var blend = new THREE.Math3Node(
						tex1,
						tex2,
						maskAlphaChannel,
						THREE.Math3Node.MIX
					);

					mtl.color = blend;

					//	GUI

					addGui( 'offset', offset.number, function( val ) {

						offset.number = val;

					}, false, 0, 1 );

					addGui( 'scale', scale.number, function( val ) {

						scale.number = val;

					}, false, 0, 10 );

					break;

				case 'saturation':

					//	MATERIAL

					mtl = new THREE.StandardNodeMaterial();

					var tex = new THREE.TextureNode( brick );
					var sat = new THREE.FloatNode( 0 );

					var satrgb = new THREE.FunctionNode( [
					"vec3 satrgb(vec3 rgb, float adjustment) {",
						//"const vec3 W = vec3(0.2125, 0.7154, 0.0721);", // LUMA
						"vec3 intensity = vec3(dot(rgb, LUMA));",
						"return mix(intensity, rgb, adjustment);",
					"}"
					].join( "\n" ) );

					var saturation = new THREE.FunctionCallNode( satrgb );
					saturation.input.rgb = tex;
					saturation.input.adjustment = sat;

					// or try

					//saturation.input[0] = tex;
					//saturation.input[1] = sat;

					mtl.color = saturation;
					mtl.environment = new THREE.CubeTextureNode( cubemap ); // optional

					//	GUI

					addGui( 'saturation', sat.number, function( val ) {

						sat.number = val;

					}, false, 0, 2 );

					break;

				case 'top-bottom':

					//	MATERIAL

					mtl = new THREE.PhongNodeMaterial();

					var top = new THREE.TextureNode( grass );
					var bottom = new THREE.TextureNode( brick );

					var normal = new THREE.NormalNode( THREE.NormalNode.WORLD );
					var normalY = new THREE.SwitchNode( normal, 'y' );

					var hard = new THREE.FloatNode( 9 );
					var offset = new THREE.FloatNode( - 2.5 );

					var hardClamp = new THREE.OperatorNode(
						normalY,
						hard,
						THREE.OperatorNode.MUL
					);

					var offsetClamp = new THREE.OperatorNode(
						hardClamp,
						offset,
						THREE.OperatorNode.ADD
					);

					var clamp0at1 = new THREE.Math1Node( offsetClamp, THREE.Math1Node.SAT );

					var blend = new THREE.Math3Node( top, bottom, clamp0at1, THREE.Math3Node.MIX );

					mtl.color = blend;

					//	GUI

					addGui( 'hard', hard.number, function( val ) {

						hard.number = val;

					}, false, 0, 20 );

					addGui( 'offset', offset.number, function( val ) {

						offset.number = val;

					}, false, - 10, 10 );

					break;

				case 'displace':

					//	MATERIAL

					mtl = new THREE.PhongNodeMaterial();

					var time = new THREE.TimeNode();
					var scale = new THREE.FloatNode( 2 );
					var speed = new THREE.FloatNode( .2 );
					var colorA = new THREE.ColorNode( 0xFFFFFF );
					var colorB = new THREE.ColorNode( 0x0054df );

					var uv = new THREE.UVNode();

					var timeScl = new THREE.OperatorNode(
						time,
						speed,
						THREE.OperatorNode.MUL
					);

					var displaceOffset = new THREE.OperatorNode(
						timeScl,
						uv,
						THREE.OperatorNode.ADD
					);

					var tex = new THREE.TextureNode( cloud, displaceOffset );
					var texArea = new THREE.SwitchNode( tex, 'w' );

					var displace = new THREE.OperatorNode(
						new THREE.NormalNode(),
						texArea,
						THREE.OperatorNode.MUL
					);

					var displaceScale = new THREE.OperatorNode(
						displace,
						scale,
						THREE.OperatorNode.MUL
					);

					var blend = new THREE.OperatorNode(
						new THREE.PositionNode(),
						displaceScale,
						THREE.OperatorNode.ADD
					);

					var color = new THREE.Math3Node(
						colorB,
						colorA,
						texArea,
						THREE.Math3Node.MIX
					);

					mtl.color = mtl.specular = new THREE.ColorNode( 0 );
					mtl.emissive = color;
					mtl.transform = blend;

					//	GUI

					addGui( 'speed', speed.number, function( val ) {

						speed.number = val;

					}, false, 0, 1 );

					addGui( 'scale', scale.number, function( val ) {

						scale.number = val;

					}, false, 0, 10 );

					addGui( 'colorA', colorA.value.getHex(), function( val ) {

						colorA.value.setHex( val );

					}, true );

					addGui( 'colorB', colorB.value.getHex(), function( val ) {

						colorB.value.setHex( val );

					}, true );

					break;

				case 'smoke':

					//	MATERIAL

					mtl = new THREE.PhongNodeMaterial();

					var time = new THREE.TimeNode();
					var uv = new THREE.UVNode();

					var timeSpeedA = new THREE.OperatorNode(
						time,
						new THREE.Vector2Node( 0.3, 0.1 ),
						THREE.OperatorNode.MUL
					);

					var timeSpeedB = new THREE.OperatorNode(
						time,
						new THREE.Vector2Node( 0.15, 0.4 ),
						THREE.OperatorNode.MUL
					);

					var uvOffsetA = new THREE.OperatorNode(
						timeSpeedA,
						uv,
						THREE.OperatorNode.ADD
					);

					var uvOffsetB = new THREE.OperatorNode(
						timeSpeedB,
						uv,
						THREE.OperatorNode.ADD
					);

					var cloudA = new THREE.TextureNode( cloud, uvOffsetA );
					var cloudB = new THREE.TextureNode( cloud, uvOffsetB );

					var clouds = new THREE.OperatorNode(
						cloudA,
						cloudB,
						THREE.OperatorNode.ADD
					);

					mtl.environment = new THREE.ColorNode( 0xFFFFFF );
					mtl.alpha = clouds;

					//	GUI

					addGui( 'color', mtl.environment.value.getHex(), function( val ) {

						mtl.environment.value.setHex( val );

					}, true );

					break;

				case 'camera-depth':

					//	MATERIAL

					var colorA = new THREE.ColorNode( 0xFFFFFF );
					var colorB = new THREE.ColorNode( 0x0054df );

					var depth = new THREE.CameraNode( THREE.CameraNode.DEPTH );
					depth.near.number = 1;
					depth.far.number = 200;

					var colors = new THREE.Math3Node(
						colorB,
						colorA,
						depth,
						THREE.Math3Node.MIX
					);

					mtl = new THREE.PhongNodeMaterial();
					mtl.color = colors;

					//	GUI

					addGui( 'near', depth.near.number, function( val ) {

						depth.near.number = val;

					}, false, 1, 1200 );

					addGui( 'far', depth.far.number, function( val ) {

						depth.far.number = val;

					}, false, 1, 1200 );

					addGui( 'nearColor', colorA.value.getHex(), function( val ) {

						colorA.value.setHex( val );

					}, true );

					addGui( 'farColor', colorB.value.getHex(), function( val ) {

						colorB.value.setHex( val );

					}, true );

					break;

				case 'caustic':

					//	MATERIAL

					mtl = new THREE.StandardNodeMaterial();

					var hash2 = new THREE.FunctionNode( [
					"vec2 hash2(vec2 p) {",
						"return fract(sin(vec2(dot(p, vec2(123.4, 748.6)), dot(p, vec2(547.3, 659.3))))*5232.85324);",
					"}"
					].join( "\n" ) );

					var voronoi = new THREE.FunctionNode( [
					// Based off of iq's described here: http://www.iquilezles.org/www/articles/voronoili
					"float voronoi(vec2 p, in float time) {",
						"vec2 n = floor(p);",
						"vec2 f = fract(p);",
						"float md = 5.0;",
						"vec2 m = vec2(0.0);",
						"for (int i = -1; i <= 1; i++) {",
							"for (int j = -1; j <= 1; j++) {",
								"vec2 g = vec2(i, j);",
								"vec2 o = hash2(n + g);",
								"o = 0.5 + 0.5 * sin(time + 5.038 * o);",
								"vec2 r = g + o - f;",
								"float d = dot(r, r);",
								"if (d < md) {",
									"md = d;",
									"m = n+g+o;",
								"}",
							"}",
						"}",
						"return md;",
					"}"
					].join( "\n" ), [ hash2 ] ); // define hash2 as dependencies

					var voronoiLayers = new THREE.FunctionNode( [
					// based on https://www.shadertoy.com/view/4tXSDf
					"float voronoiLayers(vec2 p, in float time) {",
						"float v = 0.0;",
						"float a = 0.4;",
						"for (int i = 0; i < 3; i++) {",
							"v += voronoi(p, time) * a;",
							"p *= 2.0;",
							"a *= 0.5;",
						"}",
						"return v;",
					"}"
					].join( "\n" ), [ voronoi ] ); // define voronoi as dependencies

					var time = new THREE.TimeNode();
					var timeScale = new THREE.FloatNode( 2 );

					var alpha = new THREE.FloatNode( 1 );
					var scale = new THREE.FloatNode( .1 );
					var intensity = new THREE.FloatNode( 1.5 );

					var color = new THREE.ColorNode( 0xFFFFFF );
					var colorA = new THREE.ColorNode( 0xFFFFFF );
					var colorB = new THREE.ColorNode( 0x0054df );

					var worldPos = new THREE.PositionNode( THREE.PositionNode.WORLD );
					var worldPosTop = new THREE.SwitchNode( worldPos, 'xz' );

					var worldNormal = new THREE.NormalNode( THREE.NormalNode.WORLD );

					var mask = new THREE.SwitchNode( worldNormal, 'y' );

					// clamp0at1
					mask = new THREE.Math1Node( mask, THREE.Math1Node.SAT );

					var timeOffset = new THREE.OperatorNode(
						time,
						timeScale,
						THREE.OperatorNode.MUL
					);

					var uvPos = new THREE.OperatorNode(
						worldPosTop,
						scale,
						THREE.OperatorNode.MUL
					);

					var voronoi = new THREE.FunctionCallNode( voronoiLayers );
					voronoi.input.p = uvPos;
					voronoi.input.time = timeOffset;

					var maskCaustic = new THREE.OperatorNode(
						alpha,
						mask,
						THREE.OperatorNode.MUL
					);

					var voronoiIntensity = new THREE.OperatorNode(
						voronoi,
						intensity,
						THREE.OperatorNode.MUL
					);

					var voronoiColors = new THREE.Math3Node(
						colorB,
						colorA,
						new THREE.Math1Node( voronoiIntensity, THREE.Math1Node.SAT ), // mix needs clamp
						THREE.Math3Node.MIX
					);

					var caustic = new THREE.Math3Node(
						color,
						voronoiColors,
						maskCaustic,
						THREE.Math3Node.MIX
					);

					var causticLights = new THREE.OperatorNode(
						voronoiIntensity,
						maskCaustic,
						THREE.OperatorNode.MUL
					);

					mtl.color = caustic;
					mtl.ambient = causticLights;

					//	GUI

					addGui( 'timeScale', timeScale.number, function( val ) {

						timeScale.number = val;

					}, false, 0, 5 );

					addGui( 'intensity', intensity.number, function( val ) {

						intensity.number = val;

					}, false, 0, 3 );

					addGui( 'scale', scale.number, function( val ) {

						scale.number = val;

					}, false, 0, 1 );

					addGui( 'alpha', alpha.number, function( val ) {

						alpha.number = val;

					}, false, 0, 1 );

					addGui( 'color', color.value.getHex(), function( val ) {

						color.value.setHex( val );

					}, true );

					addGui( 'colorA', colorA.value.getHex(), function( val ) {

						colorA.value.setHex( val );

					}, true );

					addGui( 'colorB', colorB.value.getHex(), function( val ) {

						colorB.value.setHex( val );

					}, true );

					break;

				case 'soft-body':

					//	MATERIAL

					move = true;

					mtl = new THREE.StandardNodeMaterial();

					var scale = new THREE.FloatNode( 2 );
					var colorA = new THREE.ColorNode( 0xFF6633 );
					var colorB = new THREE.ColorNode( 0x3366FF );

					var pos = new THREE.PositionNode();
					var posNorm = new THREE.Math1Node( pos, THREE.Math1Node.NORMALIZE );

					var mask = new THREE.SwitchNode( posNorm, 'y' );

					var velocity = new THREE.VelocityNode( mesh, {
						type: 'elastic',
						spring: .8,
						friction: .9
					} );

					var velocityArea = new THREE.OperatorNode(
						mask,
						scale,
						THREE.OperatorNode.MUL
					);

					var softVelocity = new THREE.OperatorNode(
						velocity,
						velocityArea,
						THREE.OperatorNode.MUL
					);

					var softPosition = new THREE.OperatorNode(
						new THREE.PositionNode(),
						softVelocity,
						THREE.OperatorNode.ADD
					);

					var colors = new THREE.Math3Node(
						colorB,
						colorA,
						mask,
						THREE.Math3Node.MIX
					);

					mtl.color = colors;
					mtl.transform = softPosition;

					//	GUI

					addGui( 'spring', velocity.params.spring, function( val ) {

						velocity.params.spring = val;

					}, false, 0, .9 );

					addGui( 'friction', velocity.params.friction, function( val ) {

						velocity.params.friction = val;

					}, false, 0, .9 );

					addGui( 'scale', scale.number, function( val ) {

						scale.number = val;

					}, false, 0, 3 );

					addGui( 'softBody', colorA.value.getHex(), function( val ) {

						colorA.value.setHex( val );

					}, true );

					addGui( 'hardBody', colorB.value.getHex(), function( val ) {

						colorB.value.setHex( val );

					}, true );

					break;

				case 'firefly':

					//	MATERIAL

					mtl = new THREE.PhongNodeMaterial();

					var time = new THREE.TimeNode();
					var speed = new THREE.FloatNode( .5 );

					var color = new THREE.ColorNode( 0x98ff00 );

					var timeSpeed = new THREE.OperatorNode(
						time,
						speed,
						THREE.OperatorNode.MUL
					);

					var sinCycleInSecs = new THREE.OperatorNode(
						timeSpeed,
						new THREE.ConstNode( THREE.ConstNode.PI2 ),
						THREE.OperatorNode.MUL
					);

					var cycle = new THREE.Math1Node( sinCycleInSecs, THREE.Math1Node.SIN );

					var cycleColor = new THREE.OperatorNode(
						cycle,
						color,
						THREE.OperatorNode.MUL
					);

					var cos = new THREE.Math1Node( cycleColor, THREE.Math1Node.SIN );

					mtl.color = new THREE.ColorNode( 0 );
					mtl.emissive = cos;

					//	GUI

					addGui( 'speed', speed.number, function( val ) {

						speed.number = val;

					}, false, 0, 3 );

					break;
			}

			// build shader
			mtl.build();

			// set material
			mesh.material = mtl;

		}

		function onWindowResize() {

			camera.aspect = window.innerWidth / window.innerHeight;
			camera.updateProjectionMatrix();

			renderer.setSize( window.innerWidth, window.innerHeight );

		}

		function animate() {

			var delta = clock.getDelta();

			if ( move ) {

				var time = Date.now() * 0.005;

				mesh.position.z = Math.cos( time ) * 10;
				mesh.position.y = Math.sin( time ) * 10;

			}
			else {

				mesh.position.z = mesh.position.y = 0;

			}

			//mesh.rotation.z += .01;

			// update material animation and/or gpu calcs (pre-renderer)
			mesh.material.updateAnimation( delta );

			renderer.render( scene, camera );

			requestAnimationFrame( animate );

		}

		</script>

	</body>
</html>