You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
226 lines
6.2 KiB
226 lines
6.2 KiB
<!DOCTYPE html>
|
|
<html lang="en">
|
|
|
|
<head>
|
|
<title>three.js webgl - post processing - pixelation</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>
|
|
<div id="info">
|
|
<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - Pixelation pass with optional single pixel outlines by
|
|
<a href="https://github.com/KodyJKing" target="_blank" rel="noopener">Kody King</a><br /><br />
|
|
</div>
|
|
|
|
<div id="container"></div>
|
|
|
|
<!-- Import maps polyfill -->
|
|
<!-- Remove this when import maps will be widely supported -->
|
|
<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
|
|
|
|
<script type="importmap">
|
|
{
|
|
"imports": {
|
|
"three": "../build/three.module.js",
|
|
"three/addons/": "./jsm/"
|
|
}
|
|
}
|
|
</script>
|
|
|
|
<script type="module">
|
|
|
|
import * as THREE from 'three';
|
|
|
|
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
|
|
import { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';
|
|
import { RenderPixelatedPass } from 'three/addons/postprocessing/RenderPixelatedPass.js';
|
|
import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
|
|
|
|
let camera, scene, renderer, composer, crystalMesh, clock;
|
|
let gui, params;
|
|
|
|
init();
|
|
animate();
|
|
|
|
function init() {
|
|
|
|
const aspectRatio = window.innerWidth / window.innerHeight;
|
|
|
|
camera = new THREE.OrthographicCamera( - aspectRatio, aspectRatio, 1, - 1, 0.1, 10 );
|
|
camera.position.y = 2 * Math.tan( Math.PI / 6 );
|
|
camera.position.z = 2;
|
|
|
|
scene = new THREE.Scene();
|
|
scene.background = new THREE.Color( 0x151729 );
|
|
|
|
clock = new THREE.Clock();
|
|
|
|
renderer = new THREE.WebGLRenderer();
|
|
renderer.shadowMap.enabled = true;
|
|
//renderer.setPixelRatio( window.devicePixelRatio );
|
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
|
document.body.appendChild( renderer.domElement );
|
|
|
|
composer = new EffectComposer( renderer );
|
|
const renderPixelatedPass = new RenderPixelatedPass( 6, scene, camera );
|
|
composer.addPass( renderPixelatedPass );
|
|
|
|
window.addEventListener( 'resize', onWindowResize );
|
|
|
|
const controls = new OrbitControls( camera, renderer.domElement );
|
|
controls.maxZoom = 2;
|
|
|
|
// gui
|
|
|
|
gui = new GUI();
|
|
params = { pixelSize: 6, normalEdgeStrength: .3, depthEdgeStrength: .4 };
|
|
gui.add( params, 'pixelSize' ).min( 1 ).max( 16 ).step( 1 )
|
|
.onChange( () => {
|
|
|
|
renderPixelatedPass.setPixelSize( params.pixelSize );
|
|
|
|
} );
|
|
gui.add( renderPixelatedPass, 'normalEdgeStrength' ).min( 0 ).max( 2 ).step( .05 );
|
|
gui.add( renderPixelatedPass, 'depthEdgeStrength' ).min( 0 ).max( 1 ).step( .05 );
|
|
|
|
// textures
|
|
|
|
const loader = new THREE.TextureLoader();
|
|
const texChecker = pixelTexture( loader.load( 'textures/checker.png' ) );
|
|
const texChecker2 = pixelTexture( loader.load( 'textures/checker.png' ) );
|
|
texChecker.repeat.set( 3, 3 );
|
|
texChecker2.repeat.set( 1.5, 1.5 );
|
|
|
|
// meshes
|
|
|
|
const boxMaterial = new THREE.MeshPhongMaterial( { map: texChecker2 } );
|
|
|
|
function addBox( boxSideLength, x, z, rotation ) {
|
|
|
|
const mesh = new THREE.Mesh( new THREE.BoxGeometry( boxSideLength, boxSideLength, boxSideLength ), boxMaterial );
|
|
mesh.castShadow = true;
|
|
mesh.receiveShadow = true;
|
|
mesh.rotation.y = rotation;
|
|
mesh.position.y = boxSideLength / 2;
|
|
mesh.position.set( x, boxSideLength / 2 + .0001, z );
|
|
scene.add( mesh );
|
|
return mesh;
|
|
|
|
}
|
|
|
|
addBox( .4, 0, 0, Math.PI / 4 );
|
|
addBox( .5, - .5, - .5, Math.PI / 4 );
|
|
|
|
const planeSideLength = 2;
|
|
const planeMesh = new THREE.Mesh(
|
|
new THREE.PlaneGeometry( planeSideLength, planeSideLength ),
|
|
new THREE.MeshPhongMaterial( { map: texChecker } )
|
|
);
|
|
planeMesh.receiveShadow = true;
|
|
planeMesh.rotation.x = - Math.PI / 2;
|
|
scene.add( planeMesh );
|
|
|
|
const radius = .2;
|
|
const geometry = new THREE.IcosahedronGeometry( radius );
|
|
crystalMesh = new THREE.Mesh(
|
|
geometry,
|
|
new THREE.MeshPhongMaterial( {
|
|
color: 0x2379cf,
|
|
emissive: 0x143542,
|
|
shininess: 10,
|
|
specular: 0xffffff
|
|
} )
|
|
);
|
|
crystalMesh.receiveShadow = true;
|
|
crystalMesh.castShadow = true;
|
|
scene.add( crystalMesh );
|
|
|
|
// lights
|
|
|
|
scene.add( new THREE.AmbientLight( 0x2d3645, 1.5 ) );
|
|
|
|
const directionalLight = new THREE.DirectionalLight( 0xfffc9c, .5 );
|
|
directionalLight.position.set( 100, 100, 100 );
|
|
directionalLight.castShadow = true;
|
|
directionalLight.shadow.mapSize.set( 2048, 2048 );
|
|
scene.add( directionalLight );
|
|
|
|
const spotLight = new THREE.SpotLight( 0xff8800, 1, 10, Math.PI / 16, .02, 2 );
|
|
spotLight.position.set( 2, 2, 0 );
|
|
const target = spotLight.target;
|
|
scene.add( target );
|
|
target.position.set( 0, 0, 0 );
|
|
spotLight.castShadow = true;
|
|
scene.add( spotLight );
|
|
|
|
}
|
|
|
|
function onWindowResize() {
|
|
|
|
const aspectRatio = window.innerWidth / window.innerHeight;
|
|
camera.left = - aspectRatio;
|
|
camera.right = aspectRatio;
|
|
camera.updateProjectionMatrix();
|
|
|
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
|
composer.setSize( window.innerWidth, window.innerHeight );
|
|
|
|
}
|
|
|
|
function animate() {
|
|
|
|
requestAnimationFrame( animate );
|
|
|
|
const t = clock.getElapsedTime();
|
|
|
|
crystalMesh.material.emissiveIntensity = Math.sin( t * 3 ) * .5 + .5;
|
|
crystalMesh.position.y = .7 + Math.sin( t * 2 ) * .05;
|
|
crystalMesh.rotation.y = stopGoEased( t, 2, 4 ) * 2 * Math.PI;
|
|
|
|
composer.render();
|
|
|
|
}
|
|
|
|
// Helper functions
|
|
|
|
function pixelTexture( texture ) {
|
|
|
|
texture.minFilter = THREE.NearestFilter;
|
|
texture.magFilter = THREE.NearestFilter;
|
|
texture.generateMipmaps = false;
|
|
texture.wrapS = THREE.RepeatWrapping;
|
|
texture.wrapT = THREE.RepeatWrapping;
|
|
return texture;
|
|
|
|
}
|
|
|
|
function easeInOutCubic( x ) {
|
|
|
|
return x ** 2 * 3 - x ** 3 * 2;
|
|
|
|
}
|
|
|
|
function linearStep( x, edge0, edge1 ) {
|
|
|
|
const w = edge1 - edge0;
|
|
const m = 1 / w;
|
|
const y0 = - m * edge0;
|
|
return THREE.MathUtils.clamp( y0 + m * x, 0, 1 );
|
|
|
|
}
|
|
|
|
function stopGoEased( x, downtime, period ) {
|
|
|
|
const cycle = ( x / period ) | 0;
|
|
const tween = x - cycle * period;
|
|
const linStep = easeInOutCubic( linearStep( tween, downtime, period ) );
|
|
return cycle + linStep;
|
|
|
|
}
|
|
|
|
</script>
|
|
</body>
|
|
|
|
</html>
|
|
|