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<html lang="en">
<head>
<title>three.js webgl - modifier - simplify modifier</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>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/es-module-shims@1.8.0/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 { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
import { SimplifyModifier } from 'three/addons/modifiers/SimplifyModifier.js';
let renderer, scene, camera;
init();
function init() {
const info = document.createElement( 'div' );
info.style.position = 'absolute';
info.style.top = '10px';
info.style.width = '100%';
info.style.textAlign = 'center';
info.innerHTML = '<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - Vertex Reduction using SimplifyModifier';
document.body.appendChild( info );
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 1000 );
camera.position.z = 15;
const controls = new OrbitControls( camera, renderer.domElement );
controls.addEventListener( 'change', render ); // use if there is no animation loop
controls.enablePan = false;
controls.enableZoom = false;
scene.add( new THREE.AmbientLight( 0xffffff, 0.6 ) );
const light = new THREE.PointLight( 0xffffff, 400 );
camera.add( light );
scene.add( camera );
new GLTFLoader().load( 'models/gltf/LeePerrySmith/LeePerrySmith.glb', function ( gltf ) {
const mesh = gltf.scene.children[ 0 ];
mesh.position.x = - 3;
mesh.rotation.y = Math.PI / 2;
scene.add( mesh );
const modifier = new SimplifyModifier();
const simplified = mesh.clone();
simplified.material = simplified.material.clone();
simplified.material.flatShading = true;
const count = Math.floor( simplified.geometry.attributes.position.count * 0.875 ); // number of vertices to remove
simplified.geometry = modifier.modify( simplified.geometry, count );
simplified.position.x = 3;
simplified.rotation.y = - Math.PI / 2;
scene.add( simplified );
render();
} );
window.addEventListener( 'resize', onWindowResize );
}
function onWindowResize() {
renderer.setSize( window.innerWidth, window.innerHeight );
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
render();
}
function render() {
renderer.render( scene, camera );
}
</script>
</body>
</html>