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webgl_buffergeometry_compression.html
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webgl_buffergeometry_compression.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Verge3D webgl - buffergeometry - compression</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://www.soft8soft.com/verge3d" target="_blank" rel="noopener">Verge3D</a> - BufferGeometry Compression<br />
Octahedron and Quantization encoding methods from Tarek Sherif
</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": {
"v3d": "../build/v3d.module.js",
"v3d/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as v3d from 'v3d';
import Stats from 'v3d/addons/libs/stats.module.js';
import { OrbitControls } from 'v3d/addons/controls/OrbitControls.js';
import * as GeometryCompressionUtils from 'v3d/addons/utils/GeometryCompressionUtils.js';
import * as BufferGeometryUtils from 'v3d/addons/utils/BufferGeometryUtils.js';
import { TeapotGeometry } from 'v3d/addons/geometries/TeapotGeometry.js';
import { GUI } from 'v3d/addons/libs/lil-gui.module.min.js';
const statsEnabled = true;
let container, stats, gui;
let camera, scene, renderer, controls;
const lights = [];
// options
const data = {
'model': 'Icosahedron',
'wireframe': false,
'texture': false,
'detail': 4,
'QuantizePosEncoding': false,
'NormEncodingMethods': 'None', // for normal encodings
'DefaultUVEncoding': false,
'totalGPUMemory': '0 bytes'
};
let memoryDisplay;
// geometry params
const radius = 100;
// materials
const lineMaterial = new v3d.LineBasicMaterial({ color: 0xaaaaaa, transparent: true, opacity: 0.8 });
const meshMaterial = new v3d.MeshPhongMaterial({ color: 0xffffff, side: v3d.DoubleSide });
// texture
const texture = new v3d.TextureLoader().load('textures/uv_grid_opengl.jpg');
texture.wrapS = v3d.RepeatWrapping;
texture.wrapT = v3d.RepeatWrapping;
//
init();
animate();
function init() {
//
container = document.createElement('div');
document.body.appendChild(container);
renderer = new v3d.WebGLRenderer({ antialias: true });
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
container.appendChild(renderer.domElement);
//
scene = new v3d.Scene();
camera = new v3d.PerspectiveCamera(50, window.innerWidth / window.innerHeight, 1, 1000);
camera.position.setScalar(2 * radius);
controls = new OrbitControls(camera, renderer.domElement);
controls.enablePan = false;
controls.enableZoom = false;
//
scene.add(new v3d.AmbientLight(0xffffff, 0.1));
lights[0] = new v3d.DirectionalLight(0xffffff, 0.7);
lights[1] = new v3d.DirectionalLight(0xffffff, 0.7);
lights[2] = new v3d.DirectionalLight(0xffffff, 0.7);
lights[0].position.set(0, 2 * radius, 0);
lights[1].position.set(2 * radius, -2 * radius, 2 * radius);
lights[2].position.set(- 2 * radius, -2 * radius, -2 * radius);
scene.add(lights[0]);
scene.add(lights[1]);
scene.add(lights[2]);
//
scene.add(new v3d.AxesHelper(radius * 5));
//
let geom = newGeometry(data);
const mesh = new v3d.Mesh(geom, meshMaterial);
scene.add(mesh);
const lineSegments = new v3d.LineSegments(new v3d.WireframeGeometry(geom), lineMaterial);
lineSegments.visible = data.wireframe;
scene.add(lineSegments);
//
gui = new GUI();
gui.width = 350;
function newGeometry(data) {
switch (data.model) {
case 'Icosahedron':
return new v3d.IcosahedronGeometry(radius, data.detail);
case 'Cylinder':
return new v3d.CylinderGeometry(radius / 1.5 , radius / 1.5, radius, data.detail * 6);
case 'Teapot':
return new TeapotGeometry(radius / 1.5, data.detail * 3, true, true, true, true, true);
case 'TorusKnot':
return new v3d.TorusKnotGeometry(radius / 2, 10, data.detail * 30, data.detail * 6, 3, 4);
}
}
function generateGeometry() {
geom = newGeometry(data);
updateGroupGeometry(mesh, lineSegments, geom, data);
}
function updateLineSegments() {
lineSegments.visible = data.wireframe;
}
let folder = gui.addFolder('Scene');
folder.add(data, 'model', ['Icosahedron', 'Cylinder', 'TorusKnot', 'Teapot']).onChange(generateGeometry);
folder.add(data, 'wireframe', false).onChange(updateLineSegments);
folder.add(data, 'texture', false).onChange(generateGeometry);
folder.add(data, 'detail', 1, 8, 1).onChange(generateGeometry);
folder.open();
folder = gui.addFolder('Position Compression');
folder.add(data, 'QuantizePosEncoding', false).onChange(generateGeometry);
folder.open();
folder = gui.addFolder('Normal Compression');
folder.add(data, 'NormEncodingMethods', ['None', 'DEFAULT', 'OCT1Byte', 'OCT2Byte', 'ANGLES']).onChange(generateGeometry);
folder.open();
folder = gui.addFolder('UV Compression');
folder.add(data, 'DefaultUVEncoding', false).onChange(generateGeometry);
folder.open();
folder = gui.addFolder('Memory Info');
folder.open();
memoryDisplay = folder.add(data, 'totalGPUMemory', '0 bytes');
computeGPUMemory(mesh);
//
if (statsEnabled) {
stats = new Stats();
container.appendChild(stats.dom);
}
window.addEventListener('resize', onWindowResize);
}
//
function onWindowResize() {
renderer.setSize(window.innerWidth, window.innerHeight);
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
}
//
function animate() {
requestAnimationFrame(animate);
renderer.render(scene, camera);
if (statsEnabled) stats.update();
}
//
function updateGroupGeometry(mesh, lineSegments, geometry, data) {
// dispose first
lineSegments.geometry.dispose();
mesh.geometry.dispose();
mesh.material.dispose();
if (mesh.material.map) mesh.material.map.dispose();
lineSegments.geometry = new v3d.WireframeGeometry(geometry);
mesh.geometry = geometry;
mesh.material = new v3d.MeshPhongMaterial({ color: 0xffffff, side: v3d.DoubleSide });
mesh.material.map = data.texture ? texture : null;
if (data['QuantizePosEncoding']) {
GeometryCompressionUtils.compressPositions(mesh);
}
if (data['NormEncodingMethods'] !== 'None') {
GeometryCompressionUtils.compressNormals(mesh, data['NormEncodingMethods']);
}
if (data['DefaultUVEncoding']) {
GeometryCompressionUtils.compressUvs(mesh);
}
computeGPUMemory(mesh);
}
function computeGPUMemory(mesh) {
// Use BufferGeometryUtils to do memory calculation
memoryDisplay.setValue(BufferGeometryUtils.estimateBytesUsed(mesh.geometry) + ' bytes');
}
</script>
</body>
</html>