examples/webgl_materials_compile.html

<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - node material</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;
			}

			#waitScreen {
				color: #000;
			    position: absolute;
			    top: 50%;
			    left: 50%;
			    margin-top: -50px;
			    margin-left: -50px;
			    width: 100px;
			    height: 100px;
			}

			.hide {
				display:none;
			}

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

		<div id="container"></div>
		<div id="info">
			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - Node-Based Material
			<br /><span class="button" id="preload">change preload</span>
		</div>

		<div id="waitScreen">
			Loading ...
		</div>

		<script src="../build/three.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>

		<script type="module">

		import './js/nodes/THREE.Nodes.js';

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

		var renderer, scene, camera, clock = new THREE.Clock(), fov = 50;
		var frame = new THREE.NodeFrame();
		var teapot;
		var controls;
		var rtTexture, rtMaterial;
		var meshes = [];

		document.getElementById( "preload" ).addEventListener( 'click', function () {

			var hash = document.location.hash.substr( 1 );

			if ( hash.length === 0 ) {

				window.location.hash = "#NoPreLoad";

			} else {

				window.location.hash = "";

			}

			location.reload( true );

		}, false );

		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 = 0;
			camera.position.z = - 300;
			camera.position.y = 200;
			camera.target = new THREE.Vector3();

			controls = new THREE.OrbitControls( camera, renderer.domElement );
			controls.minDistance = 50;
			controls.maxDistance = 400;

			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 );

			var itemsonrow = 10;

			for ( var i = 0; i < itemsonrow * itemsonrow; i ++ ) {

				var mesh = new THREE.Mesh( teapot );

				mesh.position.x = 50 * ( i % itemsonrow ) - 50 * itemsonrow / 2;
				mesh.position.z = 50 * Math.floor( i / itemsonrow ) - 150;
				updateMaterial( mesh );
				scene.add( mesh );
				meshes.push( mesh );

			}

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

			var hash = document.location.hash.substr( 1 );

			if ( hash.length === 0 ) {

				renderer.compile( scene, camera );

			}

			document.getElementById( "waitScreen" ).className = "hide";

			setTimeout( function () {

				onWindowResize();
				animate();

			}, 1 );

		}

		function updateMaterial( mesh ) {

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

			if ( rtTexture ) {

				rtTexture.dispose();
				rtTexture = null;

			}

			if ( rtMaterial ) {

				rtMaterial.dispose();
				rtMaterial = null;

			}

			var mtl = new THREE.PhongNodeMaterial();

			var time = new THREE.TimerNode();
			var speed = new THREE.FloatNode( Math.random() );

			var color = new THREE.ColorNode( Math.random() * 0xFFFFFF );

			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;


			var transformer = new THREE.ExpressionNode( "position + 0.0 * " + Math.random(), "vec3", [ ] );
			mtl.transform = transformer;

			// build shader ( ignore auto build )
			mtl.build();

			// set material
			mesh.material = mtl;

		}

		function onWindowResize() {

			var width = window.innerWidth, height = window.innerHeight;

			camera.aspect = width / height;
			camera.updateProjectionMatrix();

			renderer.setSize( width, height );

			if ( rtTexture ) rtTexture.setSize( width, height );

		}

		function animate() {

			var delta = clock.getDelta();

			frame.update( delta );

			for ( var i = 0; i < meshes.length; i ++ ) {

				var mesh = meshes[ i ];

				frame.updateNode( mesh.material );

			}

			renderer.render( scene, camera );

			requestAnimationFrame( animate );

		}

		</script>

	</body>
</html>