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| Author | SHA1 | Date | |
|---|---|---|---|
| 496b2a58e3 |
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README.md
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README.md
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# Hexsphere and Icosahedron Viewer
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View live at: https://www.hallada.net/planet/
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Renders shapes generated from my other project
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[icosahedron](https://crates.io/crates/icosahedron) ([github
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repo](https://github.com/thallada/icosahedron)) using
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[regl.js](https://github.com/regl-project/regl).
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Since this is hosted on Github, which has a 100 MB file limit. The most detailed
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shapes available for rendering are the hexsphere at detail level 6 and the
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icosahedron at detail level 7.
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## Running
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Checkout and then run:
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```
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npm install
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npm start
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```
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## Building
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Compiles files to the `/docs` folder which is the folder set up for Github pages
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hosting.
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```
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npm run build
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```
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Any output needs to be committed for it to appear on Github pages.
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theme: none
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset=utf-8 />
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<title>Icosahedrons and Hexspheres Generated in Rust</title>
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<style>
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html, body {
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margin: 0;
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padding: 0;
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overflow: hidden;
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height: 100%;
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color: #eee;
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background-color: black;
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font-family: sans-serif;
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}
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canvas { width: 100%; height: 100%; }
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div.loading-container { display: flex; align-items: center; justify-content: center; height: 100%; }
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div.select-container { position: fixed; top: 0px; width: 100%; z-index: 1; margin: 10px; }
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p.loading { font-size: 32px; }
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</style>
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</head>
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<body>
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<div class="select-container">
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<label>
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Rendered Shape:
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<select id="shape-select">
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<option value="hexsphere_0">Hexsphere 0</option>
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<option value="hexsphere_1">Hexsphere 1</option>
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<option value="hexsphere_2">Hexsphere 2</option>
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<option value="hexsphere_3">Hexsphere 3</option>
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<option value="hexsphere_4" selected>Hexsphere 4</option>
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<option value="hexsphere_5">Hexsphere 5</option>
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<option value="hexsphere_6">Hexsphere 6</option>
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<option value="hexsphere_7">Hexsphere 7</option>
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<option value="icosahedron_0">Icosahedron 0</option>
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<option value="icosahedron_1">Icosahedron 1</option>
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<option value="icosahedron_2">Icosahedron 2</option>
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<option value="icosahedron_3">Icosahedron 3</option>
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<option value="icosahedron_4">Icosahedron 4</option>
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<option value="icosahedron_5">Icosahedron 5</option>
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<option value="icosahedron_6">Icosahedron 6</option>
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<option value="icosahedron_7">Icosahedron 7</option>
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</select>
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</label>
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<span id="shape-loading" style="display: none">Loading...</span>
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</div>
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<div class="loading-container">
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<p class="loading">Loading...</p>
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</div>
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<script type="text/javascript" src="main.js"></script></body>
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</html>
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"main": "index.js",
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"scripts": {
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"test": "echo \"Error: no test specified\" && exit 1",
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"start": "webpack-dev-server --mode development --watch --progress --hot --host 0.0.0.0 --port 8888 --public mule.hallada.net:8888",
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"start": "webpack-dev-server --mode development --watch-poll --progress --hot",
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"build": "webpack"
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},
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"author": "",
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"license": "ISC",
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"dependencies": {
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"angle-normals": "^1.0.0",
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"regl": "^1.3.11",
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"regl-camera": "^2.1.1",
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"three": "^0.101.1",
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"three-orbit-controls": "^82.1.0"
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"three-orbit-controls": "^82.1.0",
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"three-subdivision-modifier": "^1.0.5"
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},
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"devDependencies": {
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"file-loader": "^3.0.1",
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"html-webpack-plugin": "^3.2.0",
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"url-loader": "^3.0.0",
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"webpack": "^4.29.0",
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"webpack-cli": "^3.2.1",
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"webpack-dev-server": "^3.1.14"
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<html>
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<head>
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<meta charset=utf-8 />
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<title>Icosahedrons and Hexspheres Generated in Rust</title>
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<title>My first three.js app</title>
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<style>
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html, body {
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margin: 0;
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padding: 0;
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overflow: hidden;
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height: 100%;
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color: #eee;
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background-color: black;
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font-family: sans-serif;
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}
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html, body { margin: 0; padding: 0; overflow: hidden; }
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canvas { width: 100%; height: 100%; }
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div.loading-container { display: flex; align-items: center; justify-content: center; height: 100%; }
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div.select-container { position: fixed; top: 0px; width: 100%; z-index: 1; margin: 10px; }
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p.loading { font-size: 32px; }
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</style>
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</head>
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<body>
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<div class="select-container">
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<label>
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Rendered Shape:
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<select id="shape-select">
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<option value="hexsphere_0">Hexsphere 0</option>
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<option value="hexsphere_1">Hexsphere 1</option>
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<option value="hexsphere_2">Hexsphere 2</option>
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<option value="hexsphere_3">Hexsphere 3</option>
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<option value="hexsphere_4" selected>Hexsphere 4</option>
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<option value="hexsphere_5">Hexsphere 5</option>
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<option value="hexsphere_6">Hexsphere 6</option>
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<option value="icosahedron_0">Icosahedron 0</option>
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<option value="icosahedron_1">Icosahedron 1</option>
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<option value="icosahedron_2">Icosahedron 2</option>
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<option value="icosahedron_3">Icosahedron 3</option>
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<option value="icosahedron_4">Icosahedron 4</option>
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<option value="icosahedron_5">Icosahedron 5</option>
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<option value="icosahedron_6">Icosahedron 6</option>
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<option value="icosahedron_7">Icosahedron 7</option>
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</select>
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</label>
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<span id="shape-loading" style="display: none">Loading...</span>
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</div>
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||||
<div class="loading-container">
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||||
<p class="loading">Loading...</p>
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||||
</div>
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</body>
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||||
</html>
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src/index.js
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src/index.js
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import * as THREE from "three";
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var OrbitControls = require("three-orbit-controls")(THREE);
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var SubdivisionModifier = require("three-subdivision-modifier");
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const scene = new THREE.Scene();
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var camera = new THREE.PerspectiveCamera(50, window.innerWidth / window.innerHeight, 0.1, 1000);
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var geometry = new THREE.IcosahedronBufferGeometry(5, 1);
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||||
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var position = geometry.getAttribute("position");
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var colors = [];
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var color = new THREE.Color(Math.random(), Math.random(), Math.random());
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for (var i = 0; i < position.count / 3; i += 1) {
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color.setRGB(i / (position.count / 3), i / (position.count / 3), i / (position.count / 3));
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colors.push(color.r, color.g, color.b);
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colors.push(color.r, color.g, color.b);
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colors.push(color.r, color.g, color.b);
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}
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||||
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function disposeArray() {
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this.array = null;
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||||
}
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geometry.addAttribute("color", new THREE.Float32BufferAttribute(colors, 3).onUpload(disposeArray));
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var material = new THREE.MeshBasicMaterial({ vertexColors: THREE.FaceColors });
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var sphere = new THREE.Mesh(geometry, material);
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// scene.add(sphere);
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var polyhedronMesh = new THREE.Object3D();
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var faces;
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function displayPolyhedron(data)
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{
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scene.remove(polyhedronMesh);
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polyhedronMesh = polyhedronDataToMesh(data);
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scene.add(polyhedronMesh);
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}
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function polyhedronDataToMesh(data)
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{
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||||
var polyhedron = new THREE.Object3D();
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||||
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||||
// convert vertex data to THREE.js vectors
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||||
var vertex = [];
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for (var i = 0; i < data.vertex.length; i++)
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vertex.push( new THREE.Vector3( data.vertex[i][0], data.vertex[i][1], data.vertex[i][2] ).multiplyScalar(100) );
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||||
// var vertexGeometry = new THREE.SphereGeometry( 6, 12, 6 );
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||||
// var vertexMaterial = new THREE.MeshLambertMaterial( { color: 0x222244 } );
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// var vertexSingleMesh = new THREE.Mesh( vertexGeometry );
|
||||
// var vertexAmalgam = new THREE.Geometry();
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||||
// for (var i = 0; i < data.vertex.length; i++)
|
||||
// {
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||||
// var vMesh = vertexSingleMesh.clone();
|
||||
// vMesh.position = vertex[i];
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||||
// THREE.GeometryUtils.merge( vertexAmalgam, vMesh );
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||||
// }
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||||
// var vertexMesh = new THREE.Mesh( vertexAmalgam, vertexMaterial );
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||||
// polyhedron.add( vertexMesh );
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||||
|
||||
// // convert edge data to cylinders
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||||
// var edgeMaterial = new THREE.MeshLambertMaterial( {color: 0x666666} );
|
||||
// var edgeAmalgam = new THREE.Geometry();
|
||||
// for (var i = 0; i < data.edge.length; i++)
|
||||
// {
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||||
// var index0 = data.edge[i][0];
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||||
// var index1 = data.edge[i][1];
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||||
// var eMesh = cylinderMesh( vertex[index0], vertex[index1], edgeMaterial );
|
||||
// THREE.GeometryUtils.merge( edgeAmalgam, eMesh );
|
||||
// }
|
||||
// var edgeMesh = new THREE.Mesh( edgeAmalgam, edgeMaterial );
|
||||
// polyhedron.add( edgeMesh );
|
||||
|
||||
// convert face data to a single (triangulated) geometry
|
||||
var faceMaterial = new THREE.MeshBasicMaterial( { color: 0xffffff, vertexColors: THREE.FaceColors, side: THREE.FrontSide, transparent: false, opacity:0.8 } );
|
||||
var faceColors =
|
||||
{
|
||||
3: new THREE.Color( 0xcc0000 ),
|
||||
4: new THREE.Color( 0x00cc00 ),
|
||||
5: new THREE.Color( 0x0000cc ),
|
||||
6: new THREE.Color( 0xcccc00 ),
|
||||
7: new THREE.Color( 0x999999 ),
|
||||
8: new THREE.Color( 0x990099 ),
|
||||
9: new THREE.Color( 0xff6600 ),
|
||||
10: new THREE.Color( 0x6666ff )
|
||||
};
|
||||
|
||||
var geometry = new THREE.Geometry();
|
||||
geometry.vertices = vertex;
|
||||
var faceIndex = 0;
|
||||
for (var faceNum = 0; faceNum < data.face.length; faceNum++)
|
||||
{
|
||||
for (var i = 0; i < data.face[faceNum].length - 2; i++)
|
||||
{
|
||||
geometry.faces[faceIndex] = new THREE.Face3( data.face[faceNum][0], data.face[faceNum][i+1], data.face[faceNum][i+2] );
|
||||
geometry.faces[faceIndex].color = faceColors[data.face[faceNum].length];
|
||||
faceIndex++;
|
||||
}
|
||||
}
|
||||
|
||||
geometry.computeFaceNormals();
|
||||
geometry.computeVertexNormals();
|
||||
|
||||
var modifier = new SubdivisionModifier(5);
|
||||
modifier.modify(geometry);
|
||||
|
||||
for ( var i = 0; i < geometry.faces.length; i ++ ) {
|
||||
var face = geometry.faces[ i ];
|
||||
for ( var j = 0; j < 3; j ++ ) {
|
||||
// var vertexIndex = face[ faceIndices[ j ] ];
|
||||
// var vertex = geometry.vertices[ vertexIndex ];
|
||||
|
||||
var hue = Math.random();
|
||||
var color = new THREE.Color().setHSL( hue, 1, 0.5 );
|
||||
|
||||
face.vertexColors[ j ] = color;
|
||||
}
|
||||
}
|
||||
|
||||
faces = new THREE.Mesh(geometry, faceMaterial);
|
||||
faces.scale.multiplyScalar(1.01);
|
||||
polyhedron.add(faces);
|
||||
|
||||
return polyhedron;
|
||||
}
|
||||
|
||||
displayPolyhedron({
|
||||
"name":"Truncated Icosahedron",
|
||||
"category":["Archimedean Solid"],
|
||||
"vertex":[[0,0,1.021],[0.4035482,0,0.9378643],[-0.2274644,0.3333333,0.9378643],[-0.1471226,-0.375774,0.9378643],[0.579632,0.3333333,0.7715933],[0.5058321,-0.375774,0.8033483],[-0.6020514,0.2908927,0.7715933],[-0.05138057,0.6666667,0.7715933],[0.1654988,-0.6080151,0.8033483],[-0.5217096,-0.4182147,0.7715933],[0.8579998,0.2908927,0.4708062],[0.3521676,0.6666667,0.6884578],[0.7841999,-0.4182147,0.5025612],[-0.657475,0.5979962,0.5025612],[-0.749174,-0.08488134,0.6884578],[-0.3171418,0.8302373,0.5025612],[0.1035333,-0.8826969,0.5025612],[-0.5836751,-0.6928964,0.4708062],[0.8025761,0.5979962,0.2017741],[0.9602837,-0.08488134,0.3362902],[0.4899547,0.8302373,0.3362902],[0.7222343,-0.6928964,0.2017741],[-0.8600213,0.5293258,0.1503935],[-0.9517203,-0.1535518,0.3362902],[-0.1793548,0.993808,0.1503935],[0.381901,-0.9251375,0.2017741],[-0.2710537,-0.9251375,0.3362902],[-0.8494363,-0.5293258,0.2017741],[0.8494363,0.5293258,-0.2017741],[1.007144,-0.1535518,-0.06725804],[0.2241935,0.993808,0.06725804],[0.8600213,-0.5293258,-0.1503935],[-0.7222343,0.6928964,-0.2017741],[-1.007144,0.1535518,0.06725804],[-0.381901,0.9251375,-0.2017741],[0.1793548,-0.993808,-0.1503935],[-0.2241935,-0.993808,-0.06725804],[-0.8025761,-0.5979962,-0.2017741],[0.5836751,0.6928964,-0.4708062],[0.9517203,0.1535518,-0.3362902],[0.2710537,0.9251375,-0.3362902],[0.657475,-0.5979962,-0.5025612],[-0.7841999,0.4182147,-0.5025612],[-0.9602837,0.08488134,-0.3362902],[-0.1035333,0.8826969,-0.5025612],[0.3171418,-0.8302373,-0.5025612],[-0.4899547,-0.8302373,-0.3362902],[-0.8579998,-0.2908927,-0.4708062],[0.5217096,0.4182147,-0.7715933],[0.749174,0.08488134,-0.6884578],[0.6020514,-0.2908927,-0.7715933],[-0.5058321,0.375774,-0.8033483],[-0.1654988,0.6080151,-0.8033483],[0.05138057,-0.6666667,-0.7715933],[-0.3521676,-0.6666667,-0.6884578],[-0.579632,-0.3333333,-0.7715933],[0.1471226,0.375774,-0.9378643],[0.2274644,-0.3333333,-0.9378643],[-0.4035482,0,-0.9378643],[0,0,-1.021]],
|
||||
"edge":[[0,3],[3,8],[8,5],[5,1],[1,0],[2,7],[7,15],[15,13],[13,6],[6,2],[4,10],[10,18],[18,20],[20,11],[11,4],[9,14],[14,23],[23,27],[27,17],[17,9],[12,21],[21,31],[31,29],[29,19],[19,12],[16,26],[26,36],[36,35],[35,25],[25,16],[22,32],[32,42],[42,43],[43,33],[33,22],[24,30],[30,40],[40,44],[44,34],[34,24],[28,39],[39,49],[49,48],[48,38],[38,28],[37,47],[47,55],[55,54],[54,46],[46,37],[41,45],[45,53],[53,57],[57,50],[50,41],[51,52],[52,56],[56,59],[59,58],[58,51],[1,4],[11,7],[2,0],[6,14],[9,3],[5,12],[19,10],[17,26],[16,8],[25,21],[13,22],[33,23],[20,30],[24,15],[29,39],[28,18],[34,32],[27,37],[46,36],[38,40],[35,45],[41,31],[43,47],[50,49],[44,52],[51,42],[54,53],[48,56],[58,55],[57,59]],
|
||||
"face":[[0,3,8,5,1],[2,7,15,13,6],[4,10,18,20,11],[9,14,23,27,17],[12,21,31,29,19],[16,26,36,35,25],[22,32,42,43,33],[24,30,40,44,34],[28,39,49,48,38],[37,47,55,54,46],[41,45,53,57,50],[51,52,56,59,58],[0,1,4,11,7,2],[0,2,6,14,9,3],[1,5,12,19,10,4],[3,9,17,26,16,8],[5,8,16,25,21,12],[6,13,22,33,23,14],[7,11,20,30,24,15],[10,19,29,39,28,18],[13,15,24,34,32,22],[17,27,37,46,36,26],[18,28,38,40,30,20],[21,25,35,45,41,31],[23,33,43,47,37,27],[29,31,41,50,49,39],[32,34,44,52,51,42],[35,36,46,54,53,45],[38,48,56,52,44,40],[42,51,58,55,47,43],[48,49,50,57,59,56],[53,54,55,58,59,57]]});
|
||||
|
||||
var controls = new OrbitControls(camera);
|
||||
|
||||
camera.position.z = 15;
|
||||
controls.update()
|
||||
|
||||
var renderer = new THREE.WebGLRenderer();
|
||||
renderer.setSize( window.innerWidth, window.innerHeight );
|
||||
document.body.appendChild( renderer.domElement );
|
||||
|
||||
window.addEventListener('resize', onWindowResize, false);
|
||||
|
||||
function onWindowResize() {
|
||||
camera.aspect = window.innerWidth / window.innerHeight;
|
||||
camera.updateProjectionMatrix();
|
||||
controls.update();
|
||||
renderer.setSize(window.innerWidth, window.innerHeight);
|
||||
}
|
||||
|
||||
function animate() {
|
||||
renderer.render(scene, camera);
|
||||
requestAnimationFrame(animate);
|
||||
}
|
||||
|
||||
animate();
|
||||
@ -1,132 +0,0 @@
|
||||
import hexsphere_0 from "./shapes/hexsphere_r1_d0.bin"
|
||||
import hexsphere_1 from "./shapes/hexsphere_r1_d1.bin"
|
||||
import hexsphere_2 from "./shapes/hexsphere_r1_d2.bin"
|
||||
import hexsphere_3 from "./shapes/hexsphere_r1_d3.bin"
|
||||
import hexsphere_4 from "./shapes/hexsphere_r1_d4.bin"
|
||||
import hexsphere_5 from "./shapes/hexsphere_r1_d5.bin"
|
||||
import hexsphere_6 from "./shapes/hexsphere_r1_d6.bin"
|
||||
import icosahedron_0 from "./shapes/icosahedron_r1_d0.bin"
|
||||
import icosahedron_1 from "./shapes/icosahedron_r1_d1.bin"
|
||||
import icosahedron_2 from "./shapes/icosahedron_r1_d2.bin"
|
||||
import icosahedron_3 from "./shapes/icosahedron_r1_d3.bin"
|
||||
import icosahedron_4 from "./shapes/icosahedron_r1_d4.bin"
|
||||
import icosahedron_5 from "./shapes/icosahedron_r1_d5.bin"
|
||||
import icosahedron_6 from "./shapes/icosahedron_r1_d6.bin"
|
||||
import icosahedron_7 from "./shapes/icosahedron_r1_d7.bin"
|
||||
|
||||
const shapes = {
|
||||
"hexsphere_0": hexsphere_0,
|
||||
"hexsphere_1": hexsphere_1,
|
||||
"hexsphere_2": hexsphere_2,
|
||||
"hexsphere_3": hexsphere_3,
|
||||
"hexsphere_4": hexsphere_4,
|
||||
"hexsphere_5": hexsphere_5,
|
||||
"hexsphere_6": hexsphere_6,
|
||||
"icosahedron_0": icosahedron_0,
|
||||
"icosahedron_1": icosahedron_1,
|
||||
"icosahedron_2": icosahedron_2,
|
||||
"icosahedron_3": icosahedron_3,
|
||||
"icosahedron_4": icosahedron_4,
|
||||
"icosahedron_5": icosahedron_5,
|
||||
"icosahedron_6": icosahedron_6,
|
||||
"icosahedron_7": icosahedron_7,
|
||||
}
|
||||
|
||||
const regl = require("regl")({
|
||||
extensions: ["OES_element_index_uint"],
|
||||
})
|
||||
const camera = require("regl-camera")(regl, {
|
||||
center: [0, 0, 0],
|
||||
distance: 3,
|
||||
})
|
||||
|
||||
const drawShape = hexsphere => regl({
|
||||
vert: `
|
||||
precision mediump float;
|
||||
uniform mat4 projection, view;
|
||||
attribute vec3 position, normal, color;
|
||||
varying vec3 fragNormal, fragPosition, fragColor;
|
||||
void main() {
|
||||
fragNormal = normal;
|
||||
fragPosition = position;
|
||||
fragColor = color;
|
||||
gl_Position = projection * view * vec4(position, 1.0);
|
||||
}`,
|
||||
|
||||
frag: `
|
||||
precision mediump float;
|
||||
struct Light {
|
||||
vec3 color;
|
||||
vec3 position;
|
||||
};
|
||||
uniform Light lights[1];
|
||||
varying vec3 fragNormal, fragPosition, fragColor;
|
||||
void main() {
|
||||
vec3 normal = normalize(fragNormal);
|
||||
vec3 light = vec3(0.1, 0.1, 0.1);
|
||||
for (int i = 0; i < 1; i++) {
|
||||
vec3 lightDir = normalize(lights[i].position - fragPosition);
|
||||
float diffuse = max(0.0, dot(lightDir, normal));
|
||||
light += diffuse * lights[i].color;
|
||||
}
|
||||
gl_FragColor = vec4(fragColor * light, 1.0);
|
||||
}`,
|
||||
|
||||
attributes: {
|
||||
position: hexsphere.positions,
|
||||
normal: hexsphere.normals,
|
||||
color: hexsphere.colors,
|
||||
},
|
||||
elements: hexsphere.cells,
|
||||
uniforms: {
|
||||
"lights[0].color": [1, 1, 1],
|
||||
"lights[0].position": ({ tick }) => {
|
||||
const t = 0.008 * tick
|
||||
return [
|
||||
1000 * Math.cos(t),
|
||||
1000 * Math.sin(t),
|
||||
1000 * Math.sin(t)
|
||||
]
|
||||
},
|
||||
},
|
||||
})
|
||||
|
||||
let draw = null
|
||||
|
||||
const loadShape = shape => {
|
||||
fetch(shape)
|
||||
.then(response => response.arrayBuffer())
|
||||
.then(buffer => {
|
||||
let reader = new DataView(buffer);
|
||||
let numVertices = reader.getUint32(0, true);
|
||||
let numCells = reader.getUint32(4, true);
|
||||
const shapeData = {
|
||||
positions: new Float32Array(buffer, 8, numVertices * 3),
|
||||
normals: new Float32Array(buffer, numVertices * 12 + 8, numVertices * 3),
|
||||
colors: new Float32Array(buffer, numVertices * 24 + 8, numVertices * 3),
|
||||
cells: new Uint32Array(buffer, numVertices * 36 + 8, numCells * 3),
|
||||
}
|
||||
draw = drawShape(shapeData)
|
||||
regl.frame(() => {
|
||||
regl.clear({
|
||||
depth: 1,
|
||||
color: [0, 0, 0, 1]
|
||||
})
|
||||
|
||||
camera(() => {
|
||||
draw()
|
||||
})
|
||||
})
|
||||
shapeSelectLoading.style.display = "none"
|
||||
})
|
||||
}
|
||||
|
||||
const shapeSelect = document.querySelector("select#shape-select")
|
||||
const shapeSelectLoading = document.querySelector("#shape-loading")
|
||||
shapeSelect.value = "hexsphere_4"
|
||||
loadShape(hexsphere_4)
|
||||
|
||||
shapeSelect.addEventListener("change", event => {
|
||||
shapeSelectLoading.style.display = "inline"
|
||||
loadShape(shapes[event.target.value])
|
||||
})
|
||||
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@ -1,186 +0,0 @@
|
||||
import * as THREE from "three";
|
||||
|
||||
const OrbitControls = require("three-orbit-controls")(THREE);
|
||||
|
||||
const scene = new THREE.Scene();
|
||||
const camera = new THREE.PerspectiveCamera(50, window.innerWidth / window.innerHeight, 0.1, 1000);
|
||||
|
||||
console.time("init geo");
|
||||
const geometry = new THREE.IcosahedronGeometry(1, 1);
|
||||
console.timeEnd("init geo");
|
||||
console.log(geometry);
|
||||
|
||||
console.time("Hexsphere");
|
||||
const vertToFaces = {};
|
||||
const newVertices = [];
|
||||
const colors = [];
|
||||
|
||||
for (let i = 0; i < geometry.faces.length; i += 1) {
|
||||
const face = geometry.faces[i];
|
||||
|
||||
if (vertToFaces[face.a]) {
|
||||
vertToFaces[face.a].push(i);
|
||||
} else {
|
||||
vertToFaces[face.a] = [i];
|
||||
}
|
||||
|
||||
if (vertToFaces[face.b]) {
|
||||
vertToFaces[face.b].push(i);
|
||||
} else {
|
||||
vertToFaces[face.b] = [i];
|
||||
}
|
||||
|
||||
if (vertToFaces[face.c]) {
|
||||
vertToFaces[face.c].push(i);
|
||||
} else {
|
||||
vertToFaces[face.c] = [i];
|
||||
}
|
||||
}
|
||||
|
||||
console.log(vertToFaces);
|
||||
|
||||
const originalVertCount = geometry.vertices.length;
|
||||
|
||||
const calculateCentroid = (pa, pb, pc) => {
|
||||
const vabHalf = pb.clone().sub(pa).divideScalar(2);
|
||||
const pabHalf = pa.clone().add(vabHalf);
|
||||
const centroid = pc.clone().sub(pabHalf).multiplyScalar(1/3).add(pabHalf);
|
||||
return centroid;
|
||||
}
|
||||
|
||||
const faceCentroids = {};
|
||||
for (let i = 0; i < geometry.faces.length; i += 1) {
|
||||
const face = geometry.faces[i];
|
||||
const vertexA = geometry.vertices[face.a];
|
||||
const vertexB = geometry.vertices[face.b];
|
||||
const vertexC = geometry.vertices[face.c];
|
||||
|
||||
faceCentroids[i] = calculateCentroid(vertexA, vertexB, vertexC);
|
||||
}
|
||||
|
||||
const findAdjacentFace = (vertexIndex, faces) => {
|
||||
for (let i = 0; i < faces.length; i += 1) {
|
||||
const faceIndex = faces[i];
|
||||
const face = geometry.faces[faceIndex];
|
||||
if ([face.a, face.b, face.c].includes(vertexIndex)) return faceIndex;
|
||||
}
|
||||
}
|
||||
|
||||
const findCenterPoint = faces => {
|
||||
const centerPoint = new THREE.Vector3(0, 0, 0);
|
||||
for (let i = 0; i < faces.length; i += 1) {
|
||||
centerPoint.add(faceCentroids[faces[i]]);
|
||||
}
|
||||
centerPoint.divideScalar(faces.length);
|
||||
return centerPoint;
|
||||
}
|
||||
|
||||
const midCentroidCache = {};
|
||||
const calculateMidCentroid = (vertexIndex, faces, centroid) => {
|
||||
const adjFaceIndex = findAdjacentFace(vertexIndex, faces);
|
||||
const adjCentroid = faceCentroids[adjFaceIndex];
|
||||
const midCentroidKey = vertexIndex + ",F" + adjFaceIndex;
|
||||
let midCentroid = midCentroidCache[midCentroidKey];
|
||||
if (!midCentroid) {
|
||||
midCentroid = centroid.clone().lerp(adjCentroid, 0.5);
|
||||
midCentroidCache[midCentroidKey] = midCentroid;
|
||||
}
|
||||
return midCentroid;
|
||||
}
|
||||
|
||||
|
||||
console.time("dual");
|
||||
let hexCount = 0;
|
||||
let pentCount = 0;
|
||||
for (let i = 0; i < originalVertCount; i += 1) {
|
||||
const faces = vertToFaces[i];
|
||||
if (faces.length === 6) {
|
||||
hexCount += 1;
|
||||
} else if (faces.length === 5) {
|
||||
pentCount += 1;
|
||||
}
|
||||
|
||||
const color = new THREE.Color(Math.random(), Math.random(), Math.random());
|
||||
const centerPoint = findCenterPoint(faces);
|
||||
|
||||
for (let j = 0; j < faces.length; j += 1) {
|
||||
const faceIndex = faces[j];
|
||||
const face = geometry.faces[faceIndex];
|
||||
const sortedVerts = [face.a, face.b, face.c].filter(vert => vert !== i);
|
||||
sortedVerts.unshift(i)
|
||||
|
||||
const centroid = faceCentroids[faceIndex];
|
||||
const midBCentroid = calculateMidCentroid(sortedVerts[1], faces, centroid);
|
||||
const midCCentroid = calculateMidCentroid(sortedVerts[2], faces, centroid);
|
||||
|
||||
newVertices.push(
|
||||
centerPoint.x, centerPoint.y, centerPoint.z,
|
||||
centroid.x, centroid.y, centroid.z,
|
||||
midBCentroid.x, midBCentroid.y, midBCentroid.z,
|
||||
|
||||
centerPoint.x, centerPoint.y, centerPoint.z,
|
||||
centroid.x, centroid.y, centroid.z,
|
||||
midCCentroid.x, midCCentroid.y, midCCentroid.z,
|
||||
);
|
||||
|
||||
colors.push(
|
||||
color.r, color.g, color.b,
|
||||
color.r, color.g, color.b,
|
||||
color.r, color.g, color.b,
|
||||
|
||||
color.r, color.g, color.b,
|
||||
color.r, color.g, color.b,
|
||||
color.r, color.g, color.b,
|
||||
);
|
||||
}
|
||||
}
|
||||
console.timeEnd("dual");
|
||||
console.log(`hexagons: ${hexCount}`);
|
||||
console.log(`pentagons: ${pentCount}`);
|
||||
|
||||
function disposeArray() {
|
||||
this.array = null;
|
||||
}
|
||||
|
||||
console.time("find geo");
|
||||
const newGeometry = new THREE.BufferGeometry();
|
||||
newGeometry.addAttribute("position", new THREE.Float32BufferAttribute(newVertices, 3).onUpload(disposeArray));
|
||||
newGeometry.addAttribute("color", new THREE.Float32BufferAttribute(colors, 3).onUpload(disposeArray));
|
||||
newGeometry.computeFaceNormals();
|
||||
newGeometry.computeVertexNormals();
|
||||
const nonBuffer = new THREE.Geometry().fromBufferGeometry(newGeometry);
|
||||
console.log(nonBuffer);
|
||||
console.timeEnd("find geo");
|
||||
|
||||
|
||||
console.time("other render");
|
||||
const material = new THREE.MeshBasicMaterial({ vertexColors: THREE.VertexColors, side: THREE.DoubleSide });
|
||||
const sphere = new THREE.Mesh(newGeometry, material);
|
||||
scene.add(sphere);
|
||||
|
||||
const controls = new OrbitControls(camera);
|
||||
|
||||
camera.position.z = 15;
|
||||
controls.update()
|
||||
|
||||
const renderer = new THREE.WebGLRenderer();
|
||||
renderer.setSize( window.innerWidth, window.innerHeight );
|
||||
document.body.appendChild( renderer.domElement );
|
||||
console.timeEnd("other render");
|
||||
console.timeEnd("Hexsphere");
|
||||
|
||||
window.addEventListener('resize', onWindowResize, false);
|
||||
|
||||
function onWindowResize() {
|
||||
camera.aspect = window.innerWidth / window.innerHeight;
|
||||
camera.updateProjectionMatrix();
|
||||
controls.update();
|
||||
renderer.setSize(window.innerWidth, window.innerHeight);
|
||||
}
|
||||
|
||||
function animate() {
|
||||
renderer.render(scene, camera);
|
||||
requestAnimationFrame(animate);
|
||||
}
|
||||
|
||||
animate();
|
||||
@ -2,25 +2,15 @@ const path = require("path");
|
||||
const HtmlWebpackPlugin = require('html-webpack-plugin')
|
||||
|
||||
module.exports = {
|
||||
entry: "./src/regl_index.js",
|
||||
entry: "./src/index.js",
|
||||
output: {
|
||||
filename: "main.js",
|
||||
path: path.resolve(__dirname, "docs")
|
||||
path: path.resolve(__dirname, "dist")
|
||||
},
|
||||
module: {
|
||||
rules: [
|
||||
{
|
||||
test: /\.(png|jpg|gif|bin)$/,
|
||||
use: [
|
||||
{
|
||||
loader: 'file-loader',
|
||||
options: {},
|
||||
},
|
||||
],
|
||||
},
|
||||
{
|
||||
test: /\.json$/,
|
||||
type: 'javascript/auto',
|
||||
test: /\.(png|jpg|gif)$/,
|
||||
use: [
|
||||
{
|
||||
loader: 'file-loader',
|
||||
|
||||
Loading…
Reference in New Issue
Block a user