javascript
/
three.js
镜像自地址 https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - loaders - NRRD 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">
		<style>
			#inset {
				width: 150px;
				height: 150px;
				background-color: transparent; /* or transparent; will show through only if renderer alpha: true */
				border: none; /* or none; */
				margin: 0;
				padding: 0px;
				position: absolute;
				left: 20px;
				bottom: 20px;
				z-index: 100;
			}
		</style>
	</head>

	<body>
		<div id="info">
			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> -
			NRRD format loader test
		</div>
		<div id="inset"></div>

		<script type="module">

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

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

			import { GUI } from './jsm/libs/dat.gui.module.js';
			import { TrackballControls } from './jsm/controls/TrackballControls.js';
			import { NRRDLoader } from './jsm/loaders/NRRDLoader.js';
			import { VTKLoader } from './jsm/loaders/VTKLoader.js';

			var container,
				stats,
				camera,
				controls,
				scene,
				renderer,
				container2,
				renderer2,
				camera2,
				axes2,
				scene2;

			init();
			animate();

			function init() {

				camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 0.01, 1e10 );
				camera.position.z = 300;

				scene = new THREE.Scene();

				scene.add( camera );

				// light

				var dirLight = new THREE.DirectionalLight( 0xffffff );
				dirLight.position.set( 200, 200, 1000 ).normalize();

				camera.add( dirLight );
				camera.add( dirLight.target );

				var loader = new NRRDLoader();
				loader.load( "models/nrrd/I.nrrd", function ( volume ) {

					var geometry,
						material,
						sliceZ,
						sliceY,
						sliceX;

					//box helper to see the extend of the volume
					var geometry = new THREE.BoxBufferGeometry( volume.xLength, volume.yLength, volume.zLength );
					var material = new THREE.MeshBasicMaterial( { color: 0x00ff00 } );
					var cube = new THREE.Mesh( geometry, material );
					cube.visible = false;
					var box = new THREE.BoxHelper( cube );
					scene.add( box );
					box.applyMatrix( volume.matrix );
					scene.add( cube );

					//z plane
					sliceZ = volume.extractSlice( 'z', Math.floor( volume.RASDimensions[ 2 ] / 4 ) );
					scene.add( sliceZ.mesh );

					//y plane
					sliceY = volume.extractSlice( 'y', Math.floor( volume.RASDimensions[ 1 ] / 2 ) );
					scene.add( sliceY.mesh );

					//x plane
					sliceX = volume.extractSlice( 'x', Math.floor( volume.RASDimensions[ 0 ] / 2 ) );
					scene.add( sliceX.mesh );

					gui.add( sliceX, "index", 0, volume.RASDimensions[ 0 ], 1 ).name( "indexX" ).onChange( function () {

						sliceX.repaint.call( sliceX );

					} );
					gui.add( sliceY, "index", 0, volume.RASDimensions[ 1 ], 1 ).name( "indexY" ).onChange( function () {

						sliceY.repaint.call( sliceY );

					} );
					gui.add( sliceZ, "index", 0, volume.RASDimensions[ 2 ], 1 ).name( "indexZ" ).onChange( function () {

						sliceZ.repaint.call( sliceZ );

					} );

					gui.add( volume, "lowerThreshold", volume.min, volume.max, 1 ).name( "Lower Threshold" ).onChange( function () {

						volume.repaintAllSlices();

					} );
					gui.add( volume, "upperThreshold", volume.min, volume.max, 1 ).name( "Upper Threshold" ).onChange( function () {

						volume.repaintAllSlices();

					} );
					gui.add( volume, "windowLow", volume.min, volume.max, 1 ).name( "Window Low" ).onChange( function () {

						volume.repaintAllSlices();

					} );
					gui.add( volume, "windowHigh", volume.min, volume.max, 1 ).name( "Window High" ).onChange( function () {

						volume.repaintAllSlices();

					} );

				} );

				var vtkmaterial = new THREE.MeshLambertMaterial( { wireframe: false, morphTargets: false, side: THREE.DoubleSide, color: 0xff0000 } );

				var vtkloader = new VTKLoader();
				vtkloader.load( "models/vtk/liver.vtk", function ( geometry ) {

					geometry.computeVertexNormals();

					var mesh = new THREE.Mesh( geometry, vtkmaterial );
					scene.add( mesh );
					var visibilityControl = {
						visible: true
					};
					gui.add( visibilityControl, "visible" ).name( "Model Visible" ).onChange( function () {

						mesh.visible = visibilityControl.visible;
						renderer.render( scene, camera );

					} );

				} );
				// renderer

				renderer = new THREE.WebGLRenderer( { alpha: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );

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

				controls = new TrackballControls( camera, renderer.domElement );
				controls.rotateSpeed = 5.0;
				controls.zoomSpeed = 5;
				controls.panSpeed = 2;
				controls.noZoom = false;
				controls.noPan = false;
				controls.staticMoving = true;
				controls.dynamicDampingFactor = 0.3;

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

				var gui = new GUI();

				setupInset();

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

			}

			function onWindowResize() {

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

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

				controls.handleResize();

			}

			function animate() {

				requestAnimationFrame( animate );

				controls.update();

				//copy position of the camera into inset
				camera2.position.copy( camera.position );
				camera2.position.sub( controls.target );
				camera2.position.setLength( 300 );
				camera2.lookAt( scene2.position );

				renderer.render( scene, camera );
				renderer2.render( scene2, camera2 );

				stats.update();

			}

			function setupInset() {

				var insetWidth = 150,
					insetHeight = 150;
				container2 = document.getElementById( 'inset' );
				container2.width = insetWidth;
				container2.height = insetHeight;

				// renderer
				renderer2 = new THREE.WebGLRenderer( { alpha: true } );
				renderer2.setClearColor( 0x000000, 0 );
				renderer2.setSize( insetWidth, insetHeight );
				container2.appendChild( renderer2.domElement );

				// scene
				scene2 = new THREE.Scene();

				// camera
				camera2 = new THREE.PerspectiveCamera( 50, insetWidth / insetHeight, 1, 1000 );
				camera2.up = camera.up; // important!

				// axes
				axes2 = new THREE.AxesHelper( 100 );
				scene2.add( axes2 );

			}

		</script>

	</body>
</html>