mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-11-14 18:27:56 +01:00
271 lines
6.3 KiB
HTML
Executable File
271 lines
6.3 KiB
HTML
Executable File
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - cameras</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<style>
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body {
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color: #808080;
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font-family:Monospace;
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font-size:13px;
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text-align:center;
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background-color: #000;
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margin: 0px;
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overflow: hidden;
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}
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#info {
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position: absolute;
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top: 0px; width: 100%;
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padding: 5px;
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z-index: 100;
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}
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a {
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color: #0080ff;
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}
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b { color: lightgreen }
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#stats { position: absolute; top:0; left: 0 }
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#stats #fps { background: transparent !important }
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#stats #fps #fpsText { color: #777 !important }
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#stats #fps #fpsGraph { display: none }
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</style>
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</head>
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<body>
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<div id="info"><a href="http://threejs.org" target="_blank">three.js</a> - cameras<br/>
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<b>O</b> orthographic <b>P</b> perspective
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</div>
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<script src="../build/three.min.js"></script>
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<script src="js/libs/stats.min.js"></script>
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<script>
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var SCREEN_WIDTH = window.innerWidth;
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var SCREEN_HEIGHT = window.innerHeight;
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var container, stats;
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var camera, scene, renderer, mesh;
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var cameraRig, activeCamera, activeHelper;
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var cameraPerspective, cameraOrtho;
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var cameraPerspectiveHelper, cameraOrthoHelper;
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init();
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animate();
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function init() {
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container = document.createElement( 'div' );
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document.body.appendChild( container );
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scene = new THREE.Scene();
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//
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camera = new THREE.PerspectiveCamera( 50, 0.5 * SCREEN_WIDTH / SCREEN_HEIGHT, 1, 10000 );
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camera.position.z = 2500;
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cameraPerspective = new THREE.PerspectiveCamera( 50, 0.5 * SCREEN_WIDTH / SCREEN_HEIGHT, 150, 1000 );
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cameraPerspectiveHelper = new THREE.CameraHelper( cameraPerspective );
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scene.add( cameraPerspectiveHelper );
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//
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cameraOrtho = new THREE.OrthographicCamera( 0.5 * SCREEN_WIDTH / - 2, 0.5 * SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2, SCREEN_HEIGHT / - 2, 150, 1000 );
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cameraOrthoHelper = new THREE.CameraHelper( cameraOrtho );
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scene.add( cameraOrthoHelper );
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//
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activeCamera = cameraPerspective;
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activeHelper = cameraPerspectiveHelper;
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// counteract different front orientation of cameras vs rig
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cameraOrtho.rotation.y = Math.PI;
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cameraPerspective.rotation.y = Math.PI;
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cameraRig = new THREE.Object3D();
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cameraRig.add( cameraPerspective );
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cameraRig.add( cameraOrtho );
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scene.add( cameraRig );
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//
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mesh = new THREE.Mesh( new THREE.SphereGeometry( 100, 16, 8 ), new THREE.MeshBasicMaterial( { color: 0xffffff, wireframe: true } ) );
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scene.add( mesh );
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var mesh2 = new THREE.Mesh( new THREE.SphereGeometry( 50, 16, 8 ), new THREE.MeshBasicMaterial( { color: 0x00ff00, wireframe: true } ) );
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mesh2.position.y = 150;
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mesh.add( mesh2 );
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var mesh3 = new THREE.Mesh( new THREE.SphereGeometry( 5, 16, 8 ), new THREE.MeshBasicMaterial( { color: 0x0000ff, wireframe: true } ) );
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mesh3.position.z = 150;
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cameraRig.add( mesh3 );
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//
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var geometry = new THREE.Geometry();
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for ( var i = 0; i < 10000; i ++ ) {
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var vertex = new THREE.Vector3();
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vertex.x = THREE.Math.randFloatSpread( 2000 );
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vertex.y = THREE.Math.randFloatSpread( 2000 );
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vertex.z = THREE.Math.randFloatSpread( 2000 );
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geometry.vertices.push( vertex );
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}
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var particles = new THREE.PointCloud( geometry, new THREE.PointCloudMaterial( { color: 0x888888 } ) );
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scene.add( particles );
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//
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
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renderer.domElement.style.position = "relative";
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container.appendChild( renderer.domElement );
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renderer.autoClear = false;
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//
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stats = new Stats();
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container.appendChild( stats.domElement );
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//
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window.addEventListener( 'resize', onWindowResize, false );
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document.addEventListener( 'keydown', onKeyDown, false );
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}
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//
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function onKeyDown ( event ) {
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switch( event.keyCode ) {
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case 79: /*O*/
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activeCamera = cameraOrtho;
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activeHelper = cameraOrthoHelper;
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break;
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case 80: /*P*/
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activeCamera = cameraPerspective;
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activeHelper = cameraPerspectiveHelper;
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break;
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}
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};
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//
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function onWindowResize( event ) {
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SCREEN_WIDTH = window.innerWidth;
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SCREEN_HEIGHT = window.innerHeight;
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renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
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camera.aspect = 0.5 * SCREEN_WIDTH / SCREEN_HEIGHT;
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camera.updateProjectionMatrix();
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cameraPerspective.aspect = 0.5 * SCREEN_WIDTH / SCREEN_HEIGHT;
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cameraPerspective.updateProjectionMatrix();
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cameraOrtho.left = - 0.5 * SCREEN_WIDTH / 2;
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cameraOrtho.right = 0.5 * SCREEN_WIDTH / 2;
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cameraOrtho.top = SCREEN_HEIGHT / 2;
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cameraOrtho.bottom = - SCREEN_HEIGHT / 2;
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cameraOrtho.updateProjectionMatrix();
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}
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//
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function animate() {
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requestAnimationFrame( animate );
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render();
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stats.update();
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}
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function render() {
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var r = Date.now() * 0.0005;
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mesh.position.x = 700 * Math.cos( r );
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mesh.position.z = 700 * Math.sin( r );
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mesh.position.y = 700 * Math.sin( r );
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mesh.children[ 0 ].position.x = 70 * Math.cos( 2 * r );
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mesh.children[ 0 ].position.z = 70 * Math.sin( r );
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if ( activeCamera === cameraPerspective ) {
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cameraPerspective.fov = 35 + 30 * Math.sin( 0.5 * r );
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cameraPerspective.far = mesh.position.length();
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cameraPerspective.updateProjectionMatrix();
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cameraPerspectiveHelper.update();
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cameraPerspectiveHelper.visible = true;
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cameraOrthoHelper.visible = false;
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} else {
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cameraOrtho.far = mesh.position.length();
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cameraOrtho.updateProjectionMatrix();
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cameraOrthoHelper.update();
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cameraOrthoHelper.visible = true;
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cameraPerspectiveHelper.visible = false;
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}
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cameraRig.lookAt( mesh.position );
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renderer.clear();
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activeHelper.visible = false;
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renderer.setViewport( 0, 0, SCREEN_WIDTH/2, SCREEN_HEIGHT );
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renderer.render( scene, activeCamera );
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activeHelper.visible = true;
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renderer.setViewport( SCREEN_WIDTH/2, 0, SCREEN_WIDTH/2, SCREEN_HEIGHT );
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renderer.render( scene, camera );
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}
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</script>
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</body>
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</html>
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