123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251 |
- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - portal</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>
- body {
- color: #444;
- }
- a {
- color: #08f;
- }
- </style>
- </head>
- <body>
- <div id="container"></div>
- <div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - portal
- </div>
- <script type="importmap">
- {
- "imports": {
- "three": "../build/three.module.js",
- "three/addons/": "./jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- import * as CameraUtils from 'three/addons/utils/CameraUtils.js';
- import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
- let camera, scene, renderer;
- let cameraControls;
- let smallSphereOne, smallSphereTwo;
- let portalCamera, leftPortal, rightPortal, leftPortalTexture, reflectedPosition,
- rightPortalTexture, bottomLeftCorner, bottomRightCorner, topLeftCorner;
- init();
- function init() {
- const container = document.getElementById( 'container' );
- // renderer
- renderer = new THREE.WebGLRenderer( { antialias: true } );
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.setAnimationLoop( animate );
- renderer.localClippingEnabled = true;
- renderer.toneMapping = THREE.ACESFilmicToneMapping;
- container.appendChild( renderer.domElement );
- // scene
- scene = new THREE.Scene();
- // camera
- camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 5000 );
- camera.position.set( 0, 75, 160 );
- cameraControls = new OrbitControls( camera, renderer.domElement );
- cameraControls.target.set( 0, 40, 0 );
- cameraControls.maxDistance = 400;
- cameraControls.minDistance = 10;
- cameraControls.update();
- //
- const planeGeo = new THREE.PlaneGeometry( 100.1, 100.1 );
- // bouncing icosphere
- const portalPlane = new THREE.Plane( new THREE.Vector3( 0, 0, 1 ), 0.0 );
- const geometry = new THREE.IcosahedronGeometry( 5, 0 );
- const material = new THREE.MeshPhongMaterial( {
- color: 0xffffff, emissive: 0x333333, flatShading: true,
- clippingPlanes: [ portalPlane ], clipShadows: true } );
- smallSphereOne = new THREE.Mesh( geometry, material );
- scene.add( smallSphereOne );
- smallSphereTwo = new THREE.Mesh( geometry, material );
- scene.add( smallSphereTwo );
- // portals
- portalCamera = new THREE.PerspectiveCamera( 45, 1.0, 0.1, 500.0 );
- scene.add( portalCamera );
- //frustumHelper = new THREE.CameraHelper( portalCamera );
- //scene.add( frustumHelper );
- bottomLeftCorner = new THREE.Vector3();
- bottomRightCorner = new THREE.Vector3();
- topLeftCorner = new THREE.Vector3();
- reflectedPosition = new THREE.Vector3();
- leftPortalTexture = new THREE.WebGLRenderTarget( 256, 256 );
- leftPortal = new THREE.Mesh( planeGeo, new THREE.MeshBasicMaterial( { map: leftPortalTexture.texture } ) );
- leftPortal.position.x = - 30;
- leftPortal.position.y = 20;
- leftPortal.scale.set( 0.35, 0.35, 0.35 );
- scene.add( leftPortal );
- rightPortalTexture = new THREE.WebGLRenderTarget( 256, 256 );
- rightPortal = new THREE.Mesh( planeGeo, new THREE.MeshBasicMaterial( { map: rightPortalTexture.texture } ) );
- rightPortal.position.x = 30;
- rightPortal.position.y = 20;
- rightPortal.scale.set( 0.35, 0.35, 0.35 );
- scene.add( rightPortal );
- // walls
- const planeTop = new THREE.Mesh( planeGeo, new THREE.MeshPhongMaterial( { color: 0xffffff } ) );
- planeTop.position.y = 100;
- planeTop.rotateX( Math.PI / 2 );
- scene.add( planeTop );
- const planeBottom = new THREE.Mesh( planeGeo, new THREE.MeshPhongMaterial( { color: 0xffffff } ) );
- planeBottom.rotateX( - Math.PI / 2 );
- scene.add( planeBottom );
- const planeFront = new THREE.Mesh( planeGeo, new THREE.MeshPhongMaterial( { color: 0x7f7fff } ) );
- planeFront.position.z = 50;
- planeFront.position.y = 50;
- planeFront.rotateY( Math.PI );
- scene.add( planeFront );
- const planeBack = new THREE.Mesh( planeGeo, new THREE.MeshPhongMaterial( { color: 0xff7fff } ) );
- planeBack.position.z = - 50;
- planeBack.position.y = 50;
- //planeBack.rotateY( Math.PI );
- scene.add( planeBack );
- const planeRight = new THREE.Mesh( planeGeo, new THREE.MeshPhongMaterial( { color: 0x00ff00 } ) );
- planeRight.position.x = 50;
- planeRight.position.y = 50;
- planeRight.rotateY( - Math.PI / 2 );
- scene.add( planeRight );
- const planeLeft = new THREE.Mesh( planeGeo, new THREE.MeshPhongMaterial( { color: 0xff0000 } ) );
- planeLeft.position.x = - 50;
- planeLeft.position.y = 50;
- planeLeft.rotateY( Math.PI / 2 );
- scene.add( planeLeft );
- // lights
- const mainLight = new THREE.PointLight( 0xe7e7e7, 2.5, 250, 0 );
- mainLight.position.y = 60;
- scene.add( mainLight );
- const greenLight = new THREE.PointLight( 0x00ff00, 0.5, 1000, 0 );
- greenLight.position.set( 550, 50, 0 );
- scene.add( greenLight );
- const redLight = new THREE.PointLight( 0xff0000, 0.5, 1000, 0 );
- redLight.position.set( - 550, 50, 0 );
- scene.add( redLight );
- const blueLight = new THREE.PointLight( 0xbbbbfe, 0.5, 1000, 0 );
- blueLight.position.set( 0, 50, 550 );
- scene.add( blueLight );
- window.addEventListener( 'resize', onWindowResize );
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- }
- function renderPortal( thisPortalMesh, otherPortalMesh, thisPortalTexture ) {
- // set the portal camera position to be reflected about the portal plane
- thisPortalMesh.worldToLocal( reflectedPosition.copy( camera.position ) );
- reflectedPosition.x *= - 1.0; reflectedPosition.z *= - 1.0;
- otherPortalMesh.localToWorld( reflectedPosition );
- portalCamera.position.copy( reflectedPosition );
- // grab the corners of the other portal
- // - note: the portal is viewed backwards; flip the left/right coordinates
- otherPortalMesh.localToWorld( bottomLeftCorner.set( 50.05, - 50.05, 0.0 ) );
- otherPortalMesh.localToWorld( bottomRightCorner.set( - 50.05, - 50.05, 0.0 ) );
- otherPortalMesh.localToWorld( topLeftCorner.set( 50.05, 50.05, 0.0 ) );
- // set the projection matrix to encompass the portal's frame
- CameraUtils.frameCorners( portalCamera, bottomLeftCorner, bottomRightCorner, topLeftCorner, false );
- // render the portal
- thisPortalTexture.texture.colorSpace = renderer.outputColorSpace;
- renderer.setRenderTarget( thisPortalTexture );
- renderer.state.buffers.depth.setMask( true ); // make sure the depth buffer is writable so it can be properly cleared, see #18897
- if ( renderer.autoClear === false ) renderer.clear();
- thisPortalMesh.visible = false; // hide this portal from its own rendering
- renderer.render( scene, portalCamera );
- thisPortalMesh.visible = true; // re-enable this portal's visibility for general rendering
- }
- function animate() {
- // move the bouncing sphere(s)
- const timerOne = Date.now() * 0.01;
- const timerTwo = timerOne + Math.PI * 10.0;
- smallSphereOne.position.set(
- Math.cos( timerOne * 0.1 ) * 30,
- Math.abs( Math.cos( timerOne * 0.2 ) ) * 20 + 5,
- Math.sin( timerOne * 0.1 ) * 30
- );
- smallSphereOne.rotation.y = ( Math.PI / 2 ) - timerOne * 0.1;
- smallSphereOne.rotation.z = timerOne * 0.8;
- smallSphereTwo.position.set(
- Math.cos( timerTwo * 0.1 ) * 30,
- Math.abs( Math.cos( timerTwo * 0.2 ) ) * 20 + 5,
- Math.sin( timerTwo * 0.1 ) * 30
- );
- smallSphereTwo.rotation.y = ( Math.PI / 2 ) - timerTwo * 0.1;
- smallSphereTwo.rotation.z = timerTwo * 0.8;
- // save the original camera properties
- const currentRenderTarget = renderer.getRenderTarget();
- const currentXrEnabled = renderer.xr.enabled;
- const currentShadowAutoUpdate = renderer.shadowMap.autoUpdate;
- renderer.xr.enabled = false; // Avoid camera modification
- renderer.shadowMap.autoUpdate = false; // Avoid re-computing shadows
- // render the portal effect
- renderPortal( leftPortal, rightPortal, leftPortalTexture );
- renderPortal( rightPortal, leftPortal, rightPortalTexture );
- // restore the original rendering properties
- renderer.xr.enabled = currentXrEnabled;
- renderer.shadowMap.autoUpdate = currentShadowAutoUpdate;
- renderer.setRenderTarget( currentRenderTarget );
- // render the main scene
- renderer.render( scene, camera );
- }
- </script>
- </body>
- </html>
|