samien
/
three.js
zrcadlo https://github.com/mrdoob/three.js.git


			
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							<!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
		};

		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, 1000);

			camera.position.x = 30;
			camera.position.y = 30;
			camera.position.z = 30;

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

			//

			// scene.add(new THREE.HemisphereLight(0x222222, 0x666666, 10));
			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, 2000, 0);
			lights[1].position.set(1000, 2000, 1000);
			lights[2].position.set(- 1000, - 2000, - 1000);

			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( 10, 5 );
			// 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();

			ballMesh.add(new THREE.LineSegments(ballGeom, lineMaterial));
			ballMesh.add(new THREE.Mesh(ballGeom, meshMaterial));

			//

			gui = new GUI();

			function generateGeometry() {

				updateGroupGeometry(ballMesh, new THREE.IcosahedronBufferGeometry( 10, 5 ), data);

			}

			function updateMaterial() {
				ballMesh.children[1].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);

			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, geometry, data) {

			if (geometry.isGeometry) {

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

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

			}

			mesh.children[0].geometry.dispose();
			mesh.children[1].geometry.dispose();

			mesh.children[0].geometry = new THREE.WireframeGeometry(geometry);
			mesh.children[1].geometry = geometry;

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

			if (method != "") {
				GeometryPackingUtils.packNormals(mesh.children[1], method);
			} else {
				mesh.children[1].material = new THREE.MeshPhongMaterial({ color: 0x156289, emissive: 0x072534, flatShading: data.flatShading });
			}

			// these do not update nicely together if shared

		}


	</script>

</body>

</html>