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


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - loaders - JPEG 2000 (HTJ2K) loader</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="https://threejs.org" target="_blank" rel="noopener">three.js</a> -
			<a href="https://github.com/aous72/OpenJPH" target="_blank" rel="noopener">OpenJPH</a> JPEG 2000 (HTJ2K) loader
		</div>

		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.module.js",
					"three/addons/": "./jsm/"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three';
			import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
			import { JPHLoader } from 'three/addons/loaders/JPHLoader.js';

			let camera, scene, renderer;
			let mesh;

			init();

			function init() {

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

				camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.25, 20 );
				camera.position.set( 0, 0, 2.5 );

				scene = new THREE.Scene();

				// Add loading information
				const loadingDiv = document.createElement( 'div' );
				loadingDiv.style.position = 'absolute';
				loadingDiv.style.top = '50%';
				loadingDiv.style.left = '50%';
				loadingDiv.style.transform = 'translate(-50%, -50%)';
				loadingDiv.style.color = 'white';
				loadingDiv.style.fontSize = '20px';
				loadingDiv.innerHTML = 'Loading J2K texture...';
				document.body.appendChild( loadingDiv );

				// OpenJPH WASM is automatically loaded when needed
				const loader = new JPHLoader();

				// Load a JPEG 2000 file
				loader.load( 'textures/example.j2k', function ( texture ) {

					loadingDiv.remove();

					const material = new THREE.MeshBasicMaterial( { map: texture } );
					const geometry = new THREE.PlaneGeometry( 2, 2 );
					mesh = new THREE.Mesh( geometry, material );

					scene.add( mesh );

				}, undefined, function ( error ) {

					loadingDiv.innerHTML = 'Error loading texture: ' + error.message;
					console.error( error );

				} );

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

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

				window.addEventListener( 'resize', onWindowResize );

			}

			function onWindowResize() {

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

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

			}

			function animate() {

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>