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+<!DOCTYPE html>
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+<html lang="en">
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+ <head>
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+ <title>three.js webgpu - 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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+ <link type="text/css" rel="stylesheet" href="main.css">
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+ <style>
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+ b {
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+ color: lightgreen;
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+ }
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+ </style>
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+ </head>
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+ <body>
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+ <div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">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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+
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+ <script type="importmap">
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+ {
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+ "imports": {
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+ "three": "../build/three.webgpu.js",
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+ "three/webgpu": "../build/three.webgpu.js",
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+ "three/tsl": "../build/three.tsl.js",
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+ "three/addons/": "./jsm/"
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+ }
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+ }
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+ </script>
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+
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+ <script type="module">
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+
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+ import * as THREE from 'three';
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+ import { color } from 'three/tsl';
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+
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+ let SCREEN_WIDTH = window.innerWidth;
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+ let SCREEN_HEIGHT = window.innerHeight;
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+ let aspect = SCREEN_WIDTH / SCREEN_HEIGHT;
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+
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+ let container;
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+ let camera, scene, renderer, mesh;
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+ let cameraRig, activeCamera, activeHelper;
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+ let cameraPerspective, cameraOrtho;
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+ let cameraPerspectiveHelper, cameraOrthoHelper;
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+ let backgroundNode;
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+ const frustumSize = 600;
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+
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+ init();
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+
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+ function init() {
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+
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+ container = document.createElement( 'div' );
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+ document.body.appendChild( container );
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+
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+ scene = new THREE.Scene();
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+
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+ //
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+
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+ camera = new THREE.PerspectiveCamera( 50, 0.5 * aspect, 1, 10000 );
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+ camera.position.z = 2500;
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+
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+ cameraPerspective = new THREE.PerspectiveCamera( 50, 0.5 * aspect, 150, 1000 );
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+
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+ cameraPerspectiveHelper = new THREE.CameraHelper( cameraPerspective );
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+ scene.add( cameraPerspectiveHelper );
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+
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+ //
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+ cameraOrtho = new THREE.OrthographicCamera( 0.5 * frustumSize * aspect / - 2, 0.5 * frustumSize * aspect / 2, frustumSize / 2, frustumSize / - 2, 150, 1000 );
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+
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+ cameraOrthoHelper = new THREE.CameraHelper( cameraOrtho );
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+ scene.add( cameraOrthoHelper );
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+
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+ //
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+
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+ activeCamera = cameraPerspective;
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+ activeHelper = cameraPerspectiveHelper;
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+
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+
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+ // counteract different front orientation of cameras vs rig
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+
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+ cameraOrtho.rotation.y = Math.PI;
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+ cameraPerspective.rotation.y = Math.PI;
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+
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+ cameraRig = new THREE.Group();
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+
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+ cameraRig.add( cameraPerspective );
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+ cameraRig.add( cameraOrtho );
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+
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+ scene.add( cameraRig );
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+
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+ //
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+
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+ mesh = new THREE.Mesh(
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+ new THREE.SphereGeometry( 100, 16, 8 ),
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+ new THREE.MeshBasicMaterial( { color: 0xffffff, wireframe: true } )
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+ );
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+ scene.add( mesh );
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+
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+ const mesh2 = new THREE.Mesh(
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+ new THREE.SphereGeometry( 50, 16, 8 ),
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+ new THREE.MeshBasicMaterial( { color: 0x00ff00, wireframe: true } )
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+ );
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+ mesh2.position.y = 150;
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+ mesh.add( mesh2 );
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+
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+ const mesh3 = new THREE.Mesh(
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+ new THREE.SphereGeometry( 5, 16, 8 ),
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+ new THREE.MeshBasicMaterial( { color: 0x0000ff, wireframe: true } )
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+ );
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+ mesh3.position.z = 150;
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+ cameraRig.add( mesh3 );
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+
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+ //
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+
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+ const geometry = new THREE.BufferGeometry();
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+ const vertices = [];
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+
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+ for ( let i = 0; i < 10000; i ++ ) {
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+
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+ vertices.push( THREE.MathUtils.randFloatSpread( 2000 ) ); // x
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+ vertices.push( THREE.MathUtils.randFloatSpread( 2000 ) ); // y
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+ vertices.push( THREE.MathUtils.randFloatSpread( 2000 ) ); // z
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+
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+ }
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+
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+ geometry.setAttribute( 'position', new THREE.Float32BufferAttribute( vertices, 3 ) );
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+
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+ const particles = new THREE.Points( geometry, new THREE.PointsMaterial( { color: 0x888888 } ) );
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+ scene.add( particles );
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+
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+ //
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+
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+ renderer = new THREE.WebGPURenderer( { 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.setAnimationLoop( animate );
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+ container.appendChild( renderer.domElement );
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+
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+ renderer.setScissorTest( true );
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+ backgroundNode = color( 0x111111 );
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+ renderer.setClearColor( 0x000000, 1 );
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+
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+ //
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+
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+ window.addEventListener( 'resize', onWindowResize );
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+ document.addEventListener( 'keydown', onKeyDown );
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+
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+ }
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+
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+ //
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+
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+ function onKeyDown( event ) {
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+
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+ switch ( event.keyCode ) {
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+
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+ case 79: /*O*/
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+
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+ activeCamera = cameraOrtho;
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+ activeHelper = cameraOrthoHelper;
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+
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+ break;
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+
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+ case 80: /*P*/
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+
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+ activeCamera = cameraPerspective;
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+ activeHelper = cameraPerspectiveHelper;
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+
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+ break;
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+
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+ }
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+
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+ }
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+
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+ //
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+
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+ function onWindowResize() {
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+
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+ SCREEN_WIDTH = window.innerWidth;
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+ SCREEN_HEIGHT = window.innerHeight;
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+ aspect = SCREEN_WIDTH / SCREEN_HEIGHT;
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+
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+ renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
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+
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+ camera.aspect = 0.5 * aspect;
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+ camera.updateProjectionMatrix();
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+
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+ cameraPerspective.aspect = 0.5 * aspect;
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+ cameraPerspective.updateProjectionMatrix();
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+
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+ cameraOrtho.left = - 0.5 * frustumSize * aspect / 2;
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+ cameraOrtho.right = 0.5 * frustumSize * aspect / 2;
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+ cameraOrtho.top = frustumSize / 2;
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+ cameraOrtho.bottom = - frustumSize / 2;
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+ cameraOrtho.updateProjectionMatrix();
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+
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+ }
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+
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+ //
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+
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+ function animate() {
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+
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+ render();
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+
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+ }
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+
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+
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+ function render() {
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+
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+ const r = Date.now() * 0.0005;
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+
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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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+
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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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+
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+ if ( activeCamera === cameraPerspective ) {
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+
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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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+
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+ cameraPerspectiveHelper.update();
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+ cameraPerspectiveHelper.visible = true;
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+
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+ cameraOrthoHelper.visible = false;
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+
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+ } else {
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+
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+ cameraOrtho.far = mesh.position.length();
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+ cameraOrtho.updateProjectionMatrix();
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+
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+ cameraOrthoHelper.update();
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+ cameraOrthoHelper.visible = true;
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+
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+ cameraPerspectiveHelper.visible = false;
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+
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+ }
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+
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+ cameraRig.lookAt( mesh.position );
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+
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+ //
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+
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+ activeHelper.visible = false;
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+
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+ renderer.autoClear = true;
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+
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+ renderer.setScissor( 0, 0, SCREEN_WIDTH / 2, SCREEN_HEIGHT );
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+ renderer.setViewport( 0, 0, SCREEN_WIDTH / 2, SCREEN_HEIGHT );
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+ scene.backgroundNode = null;
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+ renderer.render( scene, activeCamera );
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+
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+ //
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+
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+ activeHelper.visible = true;
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+
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+ renderer.setScissor( SCREEN_WIDTH / 2, 0, SCREEN_WIDTH / 2, SCREEN_HEIGHT );
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+ renderer.setViewport( SCREEN_WIDTH / 2, 0, SCREEN_WIDTH / 2, SCREEN_HEIGHT );
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+ renderer.autoClear = false;
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+ scene.backgroundNode = backgroundNode;
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+ renderer.render( scene, camera );
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+
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+ }
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+
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+ </script>
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+
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+ </body>
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+</html>
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Alaric.Baraou
