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


			
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - postprocessing RGB Halftone</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<link type="text/css" rel="stylesheet" href="main.css">
	</head>
	<body>
		<div id="info">
			<a href="http://threejs.org" target="_blank" rel="noopener noreferrer">three.js</a> - RGB Halftone post-processing by
			<a href="https://github.com/meatbags" target="_blank">Xavier Burrow</a>
		</div>

		<script type="module">
			import {
				BoxBufferGeometry,
				Clock,
				Color,
				Group,
				Mesh,
				MeshPhongMaterial,
				PerspectiveCamera,
				PointLight,
				Scene,
				ShaderMaterial,
				WebGLRenderer
			} from "../build/three.module.js";

			import Stats from './jsm/libs/stats.module.js';
			import { GUI } from './jsm/libs/dat.gui.module.js';

			import { OrbitControls } from './jsm/controls/OrbitControls.js';
			import { EffectComposer } from './jsm/postprocessing/EffectComposer.js';
			import { RenderPass } from './jsm/postprocessing/RenderPass.js';
			import { HalftonePass } from './jsm/postprocessing/HalftonePass.js';

			// setup

			var renderer, clock, camera, controls, stats, rotationSpeed;

			renderer = new WebGLRenderer();
			renderer.setPixelRatio( window.devicePixelRatio );
			renderer.setSize( window.innerWidth, window.innerHeight );

			clock = new Clock();

			camera = new PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 1000 );
			camera.position.z = 12;

			rotationSpeed = Math.PI / 64;
			stats = new Stats();

			document.body.appendChild( renderer.domElement );
			document.body.appendChild( stats.dom );

			// camera controls
			controls = new OrbitControls( camera, renderer.domElement );
			controls.target.set( 0, 0, 0 );
			controls.update();

			// scene
			var scene, group, mat, floor, light;

			scene = new Scene();
			scene.background = new Color( 0x444444 );
			group = new Group();
			floor = new Mesh( new BoxBufferGeometry( 100, 1, 100 ), new MeshPhongMaterial( {} ) );
			floor.position.y = - 10;
			light = new PointLight( 0xffffff, 1.0, 50, 2 );
			light.position.y = 2;
			group.add( floor, light );
			scene.add( group );

			mat = new ShaderMaterial( {

				uniforms: {},

				vertexShader: [
					"varying vec2 vUV;",
					"varying vec3 vNormal;",

					"void main() {",

					"vUV = uv;",
					"vNormal = vec3( normal );",
					"gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",

					"}"
				].join( "\n" ),

				fragmentShader: [
					"varying vec2 vUV;",
					"varying vec3 vNormal;",

					"void main() {",

					"vec4 c = vec4( abs( vNormal ) + vec3( vUV, 0.0 ), 0.0 );",
					"gl_FragColor = c;",

					"}"
				].join( "\n" )
			} );

			for ( var i = 0; i < 50; ++ i ) {

				// fill scene with coloured cubes
				var mesh = new Mesh( new BoxBufferGeometry( 2, 2, 2 ), mat );
				mesh.position.set( Math.random() * 16 - 8, Math.random() * 16 - 8, Math.random() * 16 - 8 );
				mesh.rotation.set( Math.random() * Math.PI * 2, Math.random() * Math.PI * 2, Math.random() * Math.PI * 2 );
				group.add( mesh );

			}

			// post-processing
			var composer, renderPass, halftonePass, params;

			composer = new EffectComposer( renderer );
			renderPass = new RenderPass( scene, camera );
			params = {
				shape: 1,
				radius: 4,
				rotateR: Math.PI / 12,
				rotateB: Math.PI / 12 * 2,
				rotateG: Math.PI / 12 * 3,
				scatter: 0,
				blending: 1,
				blendingMode: 1,
				greyscale: false,
				disable: false
			};
			halftonePass = new HalftonePass( window.innerWidth, window.innerHeight, params );
			composer.addPass( renderPass );
			composer.addPass( halftonePass );

			window.onresize = function () {

				// resize composer
				renderer.setSize( window.innerWidth, window.innerHeight );
				composer.setSize( window.innerWidth, window.innerHeight );
				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

			};

			// GUI
			var controller, gui, onGUIChange;

			controller = {
				radius: halftonePass.uniforms[ "radius" ].value,
				rotateR: halftonePass.uniforms[ "rotateR" ].value / ( Math.PI / 180 ),
				rotateG: halftonePass.uniforms[ "rotateG" ].value / ( Math.PI / 180 ),
				rotateB: halftonePass.uniforms[ "rotateB" ].value / ( Math.PI / 180 ),
				scatter: halftonePass.uniforms[ "scatter" ].value,
				shape: halftonePass.uniforms[ "shape" ].value,
				greyscale: halftonePass.uniforms[ "greyscale" ].value,
				blending: halftonePass.uniforms[ "blending" ].value,
				blendingMode: halftonePass.uniforms[ "blendingMode" ].value,
				disable: halftonePass.uniforms[ "disable" ].value
			};

			onGUIChange = function () {

				// update uniforms
				halftonePass.uniforms[ "radius" ].value = controller.radius;
				halftonePass.uniforms[ "rotateR" ].value = controller.rotateR * ( Math.PI / 180 );
				halftonePass.uniforms[ "rotateG" ].value = controller.rotateG * ( Math.PI / 180 );
				halftonePass.uniforms[ "rotateB" ].value = controller.rotateB * ( Math.PI / 180 );
				halftonePass.uniforms[ "scatter" ].value = controller.scatter;
				halftonePass.uniforms[ "shape" ].value = controller.shape;
				halftonePass.uniforms[ "greyscale" ].value = controller.greyscale;
				halftonePass.uniforms[ "blending" ].value = controller.blending;
				halftonePass.uniforms[ "blendingMode" ].value = controller.blendingMode;
				halftonePass.uniforms[ "disable" ].value = controller.disable;

			};

			gui = new GUI();
			gui.add( controller, 'shape', { 'Dot': 1, 'Ellipse': 2, 'Line': 3, 'Square': 4 } ).onChange( onGUIChange );
			gui.add( controller, 'radius', 1, 25 ).onChange( onGUIChange );
			gui.add( controller, 'rotateR', 0, 90 ).onChange( onGUIChange );
			gui.add( controller, 'rotateG', 0, 90 ).onChange( onGUIChange );
			gui.add( controller, 'rotateB', 0, 90 ).onChange( onGUIChange );
			gui.add( controller, 'scatter', 0, 1, 0.01 ).onChange( onGUIChange );
			gui.add( controller, 'greyscale' ).onChange( onGUIChange );
			gui.add( controller, 'blending', 0, 1, 0.01 ).onChange( onGUIChange );
			gui.add( controller, 'blendingMode', { 'Linear': 1, 'Multiply': 2, 'Add': 3, 'Lighter': 4, 'Darker': 5 } ).onChange( onGUIChange );
			gui.add( controller, 'disable' ).onChange( onGUIChange );

			function loop() {

				// demo loop
				var delta = clock.getDelta();
				requestAnimationFrame( loop );
				stats.update();
				group.rotation.y += delta * rotationSpeed;
				composer.render( delta );

			}

			loop();


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