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webgl_camera_array.html
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webgl_camera_array.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - arraycamera</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>
<script type="importmap">
{
"imports": {
"three": "../build/three.module.js",
"three/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as THREE from 'three';
let camera, scene, renderer;
let mesh;
const AMOUNT = 6;
init();
function init() {
const ASPECT_RATIO = window.innerWidth / window.innerHeight;
const WIDTH = ( window.innerWidth / AMOUNT ) * window.devicePixelRatio;
const HEIGHT = ( window.innerHeight / AMOUNT ) * window.devicePixelRatio;
const cameras = [];
for ( let y = 0; y < AMOUNT; y ++ ) {
for ( let x = 0; x < AMOUNT; x ++ ) {
const subcamera = new THREE.PerspectiveCamera( 40, ASPECT_RATIO, 0.1, 10 );
subcamera.viewport = new THREE.Vector4( Math.floor( x * WIDTH ), Math.floor( y * HEIGHT ), Math.ceil( WIDTH ), Math.ceil( HEIGHT ) );
subcamera.position.x = ( x / AMOUNT ) - 0.5;
subcamera.position.y = 0.5 - ( y / AMOUNT );
subcamera.position.z = 1.5;
subcamera.position.multiplyScalar( 2 );
subcamera.lookAt( 0, 0, 0 );
subcamera.updateMatrixWorld();
cameras.push( subcamera );
}
}
camera = new THREE.ArrayCamera( cameras );
camera.position.z = 3;
scene = new THREE.Scene();
scene.add( new THREE.AmbientLight( 0x999999 ) );
const light = new THREE.DirectionalLight( 0xffffff, 3 );
light.position.set( 0.5, 0.5, 1 );
light.castShadow = true;
light.shadow.camera.zoom = 4; // tighter shadow map
scene.add( light );
const geometryBackground = new THREE.PlaneGeometry( 100, 100 );
const materialBackground = new THREE.MeshPhongMaterial( { color: 0x000066 } );
const background = new THREE.Mesh( geometryBackground, materialBackground );
background.receiveShadow = true;
background.position.set( 0, 0, - 1 );
scene.add( background );
const geometryCylinder = new THREE.CylinderGeometry( 0.5, 0.5, 1, 32 );
const materialCylinder = new THREE.MeshPhongMaterial( { color: 0xff0000 } );
mesh = new THREE.Mesh( geometryCylinder, materialCylinder );
mesh.castShadow = true;
mesh.receiveShadow = true;
scene.add( mesh );
renderer = new THREE.WebGLRenderer();
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.setAnimationLoop( animate );
renderer.shadowMap.enabled = true;
document.body.appendChild( renderer.domElement );
//
window.addEventListener( 'resize', onWindowResize );
}
function onWindowResize() {
const ASPECT_RATIO = window.innerWidth / window.innerHeight;
const WIDTH = ( window.innerWidth / AMOUNT ) * window.devicePixelRatio;
const HEIGHT = ( window.innerHeight / AMOUNT ) * window.devicePixelRatio;
camera.aspect = ASPECT_RATIO;
camera.updateProjectionMatrix();
for ( let y = 0; y < AMOUNT; y ++ ) {
for ( let x = 0; x < AMOUNT; x ++ ) {
const subcamera = camera.cameras[ AMOUNT * y + x ];
subcamera.viewport.set(
Math.floor( x * WIDTH ),
Math.floor( y * HEIGHT ),
Math.ceil( WIDTH ),
Math.ceil( HEIGHT ) );
subcamera.aspect = ASPECT_RATIO;
subcamera.updateProjectionMatrix();
}
}
renderer.setSize( window.innerWidth, window.innerHeight );
}
function animate() {
mesh.rotation.x += 0.005;
mesh.rotation.z += 0.01;
renderer.render( scene, camera );
}
</script>
</body>
</html>