samien
/
three.js
зеркало из https://github.com/mrdoob/three.js.git


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214
							<!DOCTYPE html>
<html lang="en">

<head>
	<title>three.js webgl - materials - standard</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">three.js</a> - Geometry Packing Example<br />
	</div>

	<script type="module">

		import * as THREE from '../build/three.module.js';

		import Stats from './jsm/libs/stats.module.js';

		import { OrbitControls } from './jsm/controls/OrbitControls.js';
		import { GeometryPackingUtils, PackedPhongMaterial } from './jsm/utils/GeometryPackingUtils.js';
		import { GUI } from './jsm/libs/dat.gui.module.js';

		var statsEnabled = true;

		var container, stats, gui;

		var camera, scene, renderer, controls;

		var data = {
			flatShading: false,
			basicEncode: false,
			octEncode: false, 
			quantizePosition: false
		};

		var radius = 100;

		init();
		animate();

		function init() {

			// GeometryPackingUtils.changeShaderChunk();

			container = document.createElement('div');
			document.body.appendChild(container);

			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(50, window.innerWidth / window.innerHeight, 0.01, 10000000);

			camera.position.x = 3 * radius;
			camera.position.y = 3 * radius;
			camera.position.z = 3 * radius;

			controls = new OrbitControls(camera, renderer.domElement);

			//
			var lights = [];
			lights[0] = new THREE.PointLight(0xffffff, 1, 0);
			lights[1] = new THREE.PointLight(0xffffff, 1, 0);
			lights[2] = new THREE.PointLight(0xffffff, 1, 0);

			lights[0].position.set(0, 2 * radius, 0);
			lights[1].position.set(radius, 2 * radius, radius);
			lights[2].position.set(- radius, - 2 * radius, - radius);

			scene.add(lights[0]);
			scene.add(lights[1]);
			scene.add(lights[2]);

			//

			var lineMaterial = new THREE.LineBasicMaterial({ color: 0xffffff, transparent: true, opacity: 0.5 });
			var meshMaterial = new THREE.MeshPhongMaterial({ color: 0x156289, emissive: 0x072534, flatShading: data.flatShading });

			var texture = new THREE.TextureLoader().load("textures/disturb.jpg");

			texture.wrapS = THREE.RepeatWrapping;
			texture.wrapT = THREE.RepeatWrapping;

			// meshMaterial.map = texture;

			var ballGeom = new THREE.IcosahedronBufferGeometry( radius, 4 );
			// var ballGeom = new THREE.CylinderBufferGeometry( 5, 5, 20, 32 );
			// var ballGeom = new THREE.OctahedronBufferGeometry( 10, 4 );
			// var ballGeom = new THREE.BoxBufferGeometry( 10, 10, 10 );

			var ballMesh = new THREE.Mesh(ballGeom, meshMaterial);
			var ballLineSegments = new THREE.LineSegments(ballGeom, lineMaterial);

			scene.add(ballLineSegments);
			scene.add(ballMesh);

			//

			gui = new GUI();

			function generateGeometry() {

				updateGroupGeometry(ballMesh, ballLineSegments, new THREE.IcosahedronBufferGeometry( radius, 4 ), data);

			}

			function updateMaterial() {
				ballMesh.material = new THREE.MeshPhongMaterial({ color: 0x156289, emissive: 0x072534, flatShading: data.flatShading });
			}

			var folder = gui.addFolder('THREE.IcosahedronBufferGeometry');
			folder.open();
			folder.add(data, 'flatShading', false).onChange(updateMaterial);
			folder.add(data, 'basicEncode', false).onChange(generateGeometry);
			folder.add(data, 'octEncode', false).onChange(generateGeometry);
			folder.add(data, 'quantizePosition', false).onChange(generateGeometry);

			scene.add(ballMesh);

			camera.lookAt(ballMesh.position);

			//

			if (statsEnabled) {

				stats = new Stats();
				container.appendChild(stats.dom);

			}

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

		}

		//

		function onWindowResize() {

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

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

		}

		//

		function animate() {

			requestAnimationFrame(animate);

			controls.update();
			renderer.render(scene, camera);

			if (statsEnabled) stats.update();

		}

		//

		function updateGroupGeometry(mesh, lineSegments, geometry, data) {

			if (geometry.isGeometry) {

				geometry = new THREE.BufferGeometry().fromGeometry(geometry);

				console.warn('THREE.GeometryBrowser: Converted Geometry to BufferGeometry.');

			}

			lineSegments.geometry.dispose();
			mesh.geometry.dispose();

			lineSegments.geometry = new THREE.WireframeGeometry(geometry);
			mesh.geometry = geometry;
			mesh.material = new THREE.MeshPhongMaterial({ color: 0x156289, emissive: 0x072534, flatShading: data.flatShading });

			var method = "";
			if (data.basicEncode) {
				method = "BASIC";
			} else if (data.octEncode) {
				method = "OCT";
			}

			if (method != "") {
				GeometryPackingUtils.packNormals(mesh, method);
			} 

			if (data.quantizePosition){
				GeometryPackingUtils.packPositions(mesh);
			}

			if (method == "" && !data.quantizePosition) {
				mesh.material = new THREE.MeshPhongMaterial({ color: 0x156289, emissive: 0x072534, flatShading: data.flatShading });
			}

		}


	</script>

</body>

</html>