Initial commit

.gitignore

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+/node_modules/
+/public/build/
+
+.DS_Store

README.md

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+# This repo is no longer maintained. Consider using `npm init vite` and selecting the `svelte` option or — if you want a full-fledged app framework — use [SvelteKit](https://kit.svelte.dev), the official application framework for Svelte.
+
+---
+
+# svelte app
+
+This is a project template for [Svelte](https://svelte.dev) apps. It lives at https://github.com/sveltejs/template.
+
+To create a new project based on this template using [degit](https://github.com/Rich-Harris/degit):
+
+```bash
+npx degit sveltejs/template svelte-app
+cd svelte-app
+```
+
+*Note that you will need to have [Node.js](https://nodejs.org) installed.*
+
+
+## Get started
+
+Install the dependencies...
+
+```bash
+cd svelte-app
+npm install
+```
+
+...then start [Rollup](https://rollupjs.org):
+
+```bash
+npm run dev
+```
+
+Navigate to [localhost:8080](http://localhost:8080). You should see your app running. Edit a component file in `src`, save it, and reload the page to see your changes.
+
+By default, the server will only respond to requests from localhost. To allow connections from other computers, edit the `sirv` commands in package.json to include the option `--host 0.0.0.0`.
+
+If you're using [Visual Studio Code](https://code.visualstudio.com/) we recommend installing the official extension [Svelte for VS Code](https://marketplace.visualstudio.com/items?itemName=svelte.svelte-vscode). If you are using other editors you may need to install a plugin in order to get syntax highlighting and intellisense.
+
+## Building and running in production mode
+
+To create an optimised version of the app:
+
+```bash
+npm run build
+```
+
+You can run the newly built app with `npm run start`. This uses [sirv](https://github.com/lukeed/sirv), which is included in your package.json's `dependencies` so that the app will work when you deploy to platforms like [Heroku](https://heroku.com).
+
+
+## Single-page app mode
+
+By default, sirv will only respond to requests that match files in `public`. This is to maximise compatibility with static fileservers, allowing you to deploy your app anywhere.
+
+If you're building a single-page app (SPA) with multiple routes, sirv needs to be able to respond to requests for *any* path. You can make it so by editing the `"start"` command in package.json:
+
+```js
+"start": "sirv public --single"
+```
+
+## Using TypeScript
+
+This template comes with a script to set up a TypeScript development environment, you can run it immediately after cloning the template with:
+
+```bash
+node scripts/setupTypeScript.js
+```
+
+Or remove the script via:
+
+```bash
+rm scripts/setupTypeScript.js
+```
+
+If you want to use `baseUrl` or `path` aliases within your `tsconfig`, you need to set up `@rollup/plugin-alias` to tell Rollup to resolve the aliases. For more info, see [this StackOverflow question](https://stackoverflow.com/questions/63427935/setup-tsconfig-path-in-svelte).
+
+## Deploying to the web
+
+### With [Vercel](https://vercel.com)
+
+Install `vercel` if you haven't already:
+
+```bash
+npm install -g vercel
+```
+
+Then, from within your project folder:
+
+```bash
+cd public
+vercel deploy --name my-project
+```
+
+### With [surge](https://surge.sh/)
+
+Install `surge` if you haven't already:
+
+```bash
+npm install -g surge
+```
+
+Then, from within your project folder:
+
+```bash
+npm run build
+surge public my-project.surge.sh
+```

package.json

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+{
+  "name": "svelte-app",
+  "version": "1.0.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "predev": "node scripts/parse-comin.js",
+    "prebuild": "node scripts/parse-comin.js",
+    "build": "rollup -c",
+    "dev": "rollup -c -w",
+    "start": "sirv public --no-clear"
+  },
+  "devDependencies": {
+    "@rollup/plugin-commonjs": "^24.0.0",
+    "@rollup/plugin-node-resolve": "^15.0.0",
+    "@rollup/plugin-terser": "^0.4.0",
+    "rollup": "^3.15.0",
+    "rollup-plugin-css-only": "^4.3.0",
+    "rollup-plugin-livereload": "^2.0.0",
+    "rollup-plugin-svelte": "^7.1.2",
+    "svelte": "^3.55.0"
+  },
+  "dependencies": {
+    "sirv-cli": "^2.0.0",
+    "three": "^0.173.0"
+  }
+}

public/global.css

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+html, body {
+	position: relative;
+	width: 100%;
+	height: 100%;
+}
+
+body {
+	color: #333;
+	margin: 0;
+	padding: 8px;
+	box-sizing: border-box;
+	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
+}
+
+a {
+	color: rgb(0,100,200);
+	text-decoration: none;
+}
+
+a:hover {
+	text-decoration: underline;
+}
+
+a:visited {
+	color: rgb(0,80,160);
+}
+
+label {
+	display: block;
+}
+
+input, button, select, textarea {
+	font-family: inherit;
+	font-size: inherit;
+	-webkit-padding: 0.4em 0;
+	padding: 0.4em;
+	margin: 0 0 0.5em 0;
+	box-sizing: border-box;
+	border: 1px solid #ccc;
+	border-radius: 2px;
+}
+
+input:disabled {
+	color: #ccc;
+}
+
+button {
+	color: #333;
+	background-color: #f4f4f4;
+	outline: none;
+}
+
+button:disabled {
+	color: #999;
+}
+
+button:not(:disabled):active {
+	background-color: #ddd;
+}
+
+button:focus {
+	border-color: #666;
+}

public/index.html

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<meta charset='utf-8'>
+	<meta name='viewport' content='width=device-width,initial-scale=1'>
+
+	<title>Svelte app</title>
+
+	<link rel='icon' type='image/png' href='/favicon.png'>
+	<link rel='stylesheet' href='/global.css'>
+	<link rel='stylesheet' href='/build/bundle.css'>
+
+	<script defer src='/build/bundle.js'></script>
+</head>
+
+<body>
+</body>
+</html>

rollup.config.js

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+import { spawn } from 'child_process';
+import svelte from 'rollup-plugin-svelte';
+import commonjs from '@rollup/plugin-commonjs';
+import terser from '@rollup/plugin-terser';
+import resolve from '@rollup/plugin-node-resolve';
+import livereload from 'rollup-plugin-livereload';
+import css from 'rollup-plugin-css-only';
+
+const production = !process.env.ROLLUP_WATCH;
+
+function serve() {
+	let server;
+
+	function toExit() {
+		if (server) server.kill(0);
+	}
+
+	return {
+		writeBundle() {
+			if (server) return;
+			server = spawn('npm', ['run', 'start', '--', '--dev'], {
+				stdio: ['ignore', 'inherit', 'inherit'],
+				shell: true
+			});
+
+			process.on('SIGTERM', toExit);
+			process.on('exit', toExit);
+		}
+	};
+}
+
+export default {
+	input: 'src/main.js',
+	output: {
+		sourcemap: true,
+		format: 'iife',
+		name: 'app',
+		file: 'public/build/bundle.js'
+	},
+	plugins: [
+		svelte({
+			compilerOptions: {
+				// enable run-time checks when not in production
+				dev: !production
+			}
+		}),
+		// we'll extract any component CSS out into
+		// a separate file - better for performance
+		css({ output: 'bundle.css' }),
+
+		// If you have external dependencies installed from
+		// npm, you'll most likely need these plugins. In
+		// some cases you'll need additional configuration -
+		// consult the documentation for details:
+		// https://github.com/rollup/plugins/tree/master/packages/commonjs
+		resolve({
+			browser: true,
+			dedupe: ['svelte'],
+			exportConditions: ['svelte']
+		}),
+		commonjs(),
+
+		// In dev mode, call `npm run start` once
+		// the bundle has been generated
+		!production && serve(),
+
+		// Watch the `public` directory and refresh the
+		// browser on changes when not in production
+		!production && livereload('public'),
+
+		// If we're building for production (npm run build
+		// instead of npm run dev), minify
+		production && terser()
+	],
+	watch: {
+		clearScreen: false
+	}
+};

scripts/parse-comin.js

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+// scripts/parse-comin.js
+import { execSync } from 'child_process';
+import { writeFileSync } from 'fs';
+
+try {
+	const output = execSync('comin status').toString();
+
+	// Extract commit ID
+	const commitMatch = output.match(/Commit ID (\b[0-9a-f]{40}\b)/);
+	const commitId = commitMatch ? commitMatch[1].substring(0, 7) : 'unknown';
+
+	// Check build success
+	const buildSuccess = output.includes('Evaluation succeeded') &&
+		output.includes('Built');
+
+	const result = {
+		commitId,
+		buildSuccess,
+		timestamp: new Date().toISOString()
+	};
+
+	writeFileSync('./src/lib/build-info.json', JSON.stringify(result, null, 2));
+	console.log('Build info saved:', result);
+
+} catch (error) {
+	console.error('Error parsing comin status:', error);
+	writeFileSync('./src/lib/build-info.json', JSON.stringify({
+		commitId: 'error',
+		buildSuccess: false,
+		timestamp: new Date().toISOString()
+	}));
+}

scripts/setupTypeScript.js

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+// @ts-check
+
+/** This script modifies the project to support TS code in .svelte files like:
+
+  <script lang="ts">
+  	export let name: string;
+  </script>
+ 
+  As well as validating the code for CI.
+  */
+
+/**  To work on this script:
+  rm -rf test-template template && git clone sveltejs/template test-template && node scripts/setupTypeScript.js test-template
+*/
+
+import fs from "fs"
+import path from "path"
+import { argv } from "process"
+import url from 'url';
+
+const __filename = url.fileURLToPath(import.meta.url);
+const __dirname = url.fileURLToPath(new URL('.', import.meta.url));
+const projectRoot = argv[2] || path.join(__dirname, "..")
+
+// Add deps to pkg.json
+const packageJSON = JSON.parse(fs.readFileSync(path.join(projectRoot, "package.json"), "utf8"))
+packageJSON.devDependencies = Object.assign(packageJSON.devDependencies, {
+  "svelte-check": "^3.0.0",
+  "svelte-preprocess": "^5.0.0",
+  "@rollup/plugin-typescript": "^11.0.0",
+  "typescript": "^4.9.0",
+  "tslib": "^2.5.0",
+  "@tsconfig/svelte": "^3.0.0"
+})
+
+// Add script for checking
+packageJSON.scripts = Object.assign(packageJSON.scripts, {
+  "check": "svelte-check"
+})
+
+// Write the package JSON
+fs.writeFileSync(path.join(projectRoot, "package.json"), JSON.stringify(packageJSON, null, "  "))
+
+// mv src/main.js to main.ts - note, we need to edit rollup.config.js for this too
+const beforeMainJSPath = path.join(projectRoot, "src", "main.js")
+const afterMainTSPath = path.join(projectRoot, "src", "main.ts")
+fs.renameSync(beforeMainJSPath, afterMainTSPath)
+
+// Switch the app.svelte file to use TS
+const appSveltePath = path.join(projectRoot, "src", "App.svelte")
+let appFile = fs.readFileSync(appSveltePath, "utf8")
+appFile = appFile.replace("<script>", '<script lang="ts">')
+appFile = appFile.replace("export let name;", 'export let name: string;')
+fs.writeFileSync(appSveltePath, appFile)
+
+// Edit rollup config
+const rollupConfigPath = path.join(projectRoot, "rollup.config.js")
+let rollupConfig = fs.readFileSync(rollupConfigPath, "utf8")
+
+// Edit imports
+rollupConfig = rollupConfig.replace(`'rollup-plugin-css-only';`, `'rollup-plugin-css-only';
+import sveltePreprocess from 'svelte-preprocess';
+import typescript from '@rollup/plugin-typescript';`)
+
+// Replace name of entry point
+rollupConfig = rollupConfig.replace(`'src/main.js'`, `'src/main.ts'`)
+
+// Add preprocessor
+rollupConfig = rollupConfig.replace(
+  'compilerOptions:',
+  'preprocess: sveltePreprocess({ sourceMap: !production }),\n\t\t\tcompilerOptions:'
+);
+
+// Add TypeScript
+rollupConfig = rollupConfig.replace(
+  'commonjs(),',
+  'commonjs(),\n\t\ttypescript({\n\t\t\tsourceMap: !production,\n\t\t\tinlineSources: !production\n\t\t}),'
+);
+fs.writeFileSync(rollupConfigPath, rollupConfig)
+
+// Add svelte.config.js
+const tsconfig = `{
+  "extends": "@tsconfig/svelte/tsconfig.json",
+
+  "include": ["src/**/*"],
+  "exclude": ["node_modules/*", "__sapper__/*", "public/*"]
+}`
+const tsconfigPath =  path.join(projectRoot, "tsconfig.json")
+fs.writeFileSync(tsconfigPath, tsconfig)
+
+// Add TSConfig
+const svelteConfig = `import sveltePreprocess from 'svelte-preprocess';
+
+export default {
+  preprocess: sveltePreprocess()
+};
+`
+const svelteConfigPath =  path.join(projectRoot, "svelte.config.js")
+fs.writeFileSync(svelteConfigPath, svelteConfig)
+
+// Add global.d.ts
+const dtsPath =  path.join(projectRoot, "src", "global.d.ts")
+fs.writeFileSync(dtsPath, `/// <reference types="svelte" />`)
+
+// Delete this script, but not during testing
+if (!argv[2]) {
+  // Remove the script
+  fs.unlinkSync(path.join(__filename))
+
+  // Check for Mac's DS_store file, and if it's the only one left remove it
+  const remainingFiles = fs.readdirSync(path.join(__dirname))
+  if (remainingFiles.length === 1 && remainingFiles[0] === '.DS_store') {
+    fs.unlinkSync(path.join(__dirname, '.DS_store'))
+  }
+
+  // Check if the scripts folder is empty
+  if (fs.readdirSync(path.join(__dirname)).length === 0) {
+    // Remove the scripts folder
+    fs.rmdirSync(path.join(__dirname))
+  }
+}
+
+// Adds the extension recommendation
+fs.mkdirSync(path.join(projectRoot, ".vscode"), { recursive: true })
+fs.writeFileSync(path.join(projectRoot, ".vscode", "extensions.json"), `{
+  "recommendations": ["svelte.svelte-vscode"]
+}
+`)
+
+console.log("Converted to TypeScript.")
+
+if (fs.existsSync(path.join(projectRoot, "node_modules"))) {
+  console.log("\nYou will need to re-run your dependency manager to get started.")
+}

src/App.svelte

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+<script>
+	import TopologyShader from "./TopologyShader.svelte";
+	import BuildInfo from "./BuildInfo.svelte";
+</script>
+
+<!-- <canvas bind:this={canvas} /> -->
+
+<div class="center-text">
+	<h1>heroin.trade</h1>
+</div>
+<TopologyShader />
+
+<style global>
+	:global(body) {
+		margin: 0;
+		overflow: hidden;
+		font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
+			Ubuntu, Cantarell, sans-serif;
+	}
+
+	.center-text {
+		position: fixed;
+		top: 0;
+		left: 0;
+		width: 100%;
+		height: 100%;
+		display: flex;
+		justify-content: center;
+		align-items: center;
+		pointer-events: none;
+		z-index: 1;
+	}
+
+	h1 {
+		color: rgba(255, 255, 255, 0.9);
+		font-size: 4rem;
+		font-weight: 700;
+		letter-spacing: -0.05em;
+		text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
+		user-select: none;
+		mix-blend-mode: screen;
+
+		/* Subtent animation */
+		animation: float 3s ease-in-out infinite;
+	}
+
+	@keyframes float {
+		0%,
+		100% {
+			transform: translateY(0);
+		}
+		50% {
+			transform: translateY(-10px);
+		}
+	}
+
+	@media (max-width: 768px) {
+		h1 {
+			font-size: 2.5rem;
+		}
+	}
+</style>

src/BuildInfo.svelte

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+<script>
+	import buildInfo from "$lib/build-info.json";
+
+	const statusColor = buildInfo.buildSuccess ? "#4ade80" : "#f87171";
+	const statusText = buildInfo.buildSuccess ? "SUCCEEDED" : "FAILED";
+</script>
+
+<div class="build-info">
+	<div class="commit-id">
+		<span class="label">COMMIT:</span>
+		<span class="value">{buildInfo.commitId}</span>
+	</div>
+	<div class="status" style:color={statusColor}>
+		{statusText}
+	</div>
+</div>
+
+<style>
+	.build-info {
+		position: fixed;
+		bottom: 20px;
+		right: 20px;
+		font-family: "Fira Code", monospace;
+		font-size: 0.9rem;
+		background: rgba(0, 0, 0, 0.7);
+		padding: 8px 12px;
+		border-radius: 4px;
+		backdrop-filter: blur(4px);
+		display: flex;
+		gap: 1rem;
+		align-items: center;
+	}
+
+	.label {
+		color: rgba(255, 255, 255, 0.6);
+		margin-right: 0.5rem;
+	}
+
+	.value {
+		color: white;
+		font-weight: 600;
+	}
+
+	.status {
+		font-weight: bold;
+		text-transform: uppercase;
+		font-size: 0.8rem;
+		letter-spacing: 0.05em;
+	}
+</style>

src/TopologyShader.svelte

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+<script>
+	import { onMount, onDestroy } from "svelte";
+	import * as THREE from "three";
+
+	let canvas;
+	let renderer, scene, camera, material;
+	let animationFrame;
+
+	const vertexShader = `
+    varying vec2 vUv;
+    void main() {
+      vUv = uv;
+      gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);
+    }
+  `;
+
+	const fragmentShader = `
+    uniform float uTime;
+    uniform vec2 uResolution;
+    varying vec2 vUv;
+    
+    // Simplex Noise by Ian McEwan, Ashima Arts
+    vec4 permute(vec4 x){return mod(((x*34.0)+1.0)*x, 289.0);}
+    float snoise(vec3 v){
+      const vec2  C = vec2(1.0/6.0, 1.0/3.0) ;
+      const vec4  D = vec4(0.0, 0.5, 1.0, 2.0);
+      vec3 i  = floor(v + dot(v, C.yyy));
+      vec3 x0 = v - i + dot(i, C.xxx);
+      vec3 g = step(x0.yzx, x0.xyz);
+      vec3 l = 1.0 - g;
+      vec3 i1 = min(g.xyz, l.zxy);
+      vec3 i2 = max(g.xyz, l.zxy);
+      vec3 x1 = x0 - i1 + C.xxx;
+      vec3 x2 = x0 - i2 + C.yyy;
+      vec3 x3 = x0 - D.yyy;
+      i = mod(i, 289.0); 
+      vec4 p = permute(permute(permute( 
+             i.z + vec4(0.0, i1.z, i2.z, 1.0 ))
+           + i.y + vec4(0.0, i1.y, i2.y, 1.0 )) 
+           + i.x + vec4(0.0, i1.x, i2.x, 1.0 ));
+      float n_ = 0.142857142857;
+      vec3  ns = n_ * D.wyz - D.xzx;
+      vec4 j = p - 49.0 * floor(p * ns.z * ns.z);
+      vec4 x_ = floor(j * ns.z);
+      vec4 y_ = floor(j - 7.0 * x_);
+      vec4 x = x_ *ns.x + ns.yyyy;
+      vec4 y = y_ *ns.x + ns.yyyy;
+      vec4 h = 1.0 - abs(x) - abs(y);
+      vec4 b0 = vec4(x.xy, y.xy);
+      vec4 b1 = vec4(x.zw, y.zw);
+      vec4 s0 = floor(b0)*2.0 + 1.0;
+      vec4 s1 = floor(b1)*2.0 + 1.0;
+      vec4 sh = -step(h, vec4(0.0));
+      vec4 a0 = b0.xzyw + s0.xzyw*sh.xxyy;
+      vec4 a1 = b1.xzyw + s1.xzyw*sh.zzww;
+      vec3 p0 = vec3(a0.xy, h.x);
+      vec3 p1 = vec3(a0.zw, h.y);
+      vec3 p2 = vec3(a1.xy, h.z);
+      vec3 p3 = vec3(a1.zw, h.w);
+      vec4 norm = 1.0/(vec4(dot(p0,p0), dot(p1,p1), dot(p2,p2), dot(p3,p3)));
+      p0 *= norm.x;
+      p1 *= norm.y;
+      p2 *= norm.z;
+      p3 *= norm.w;
+      vec4 m = max(0.6 - vec4(dot(x0,x0), dot(x1,x1), dot(x2,x2), dot(x3,x3)), 0.0);
+      m = m * m;
+      return 42.0 * dot(m*m, vec4(dot(p0,x0), dot(p1,x1), 
+                                dot(p2,x2), dot(p3,x3)));
+    }
+    
+    void main() {
+      vec2 uv = vUv * 2.0 - 1.0;
+      uv.x *= uResolution.x / uResolution.y;
+      
+      // Generate terrain using noise
+      float elevation = snoise(vec3(uv * 2.0, uTime * 0.2)) * 0.5;
+      elevation += snoise(vec3(uv * 4.0, uTime * 0.3)) * 0.025;
+      elevation += snoise(vec3(uv * 8.0, uTime * 0.4)) * 0.0025;
+      
+      // Create contour lines
+      float contour = smoothstep(0.97, 0.99, sin(elevation * 40.0 + uTime));
+      
+      // Add subtle movement to lines
+      float lineDrift = sin(uTime * 0.5 + uv.x * 10.0) * 0.01;
+      contour += smoothstep(0.95, 0.97, 
+        sin((.3 * elevation + lineDrift) * 80.0 + uv.y * 5.0 + .3 * uTime));
+      
+      // Color scheme
+      vec3 color = mix(
+        vec3(0., 0., 0.), // Dark brown
+        vec3(1., 0., 0.),   // Light sand
+        // smoothstep(-0.5, 0.5, elevation)
+	.3
+      );
+      
+      // Apply contour lines
+      color = mix(color, vec3(0.0), contour * 1.3);
+      
+      // Add subtle highlight to peaks
+      // float highlight = smoothstep(0.4, 0.6, elevation);
+      // color = mix(color, vec3(0.9), highlight * 0.3);
+      
+      gl_FragColor = vec4(color, 1.0);
+    }
+  `;
+
+	onMount(() => {
+		scene = new THREE.Scene();
+		camera = new THREE.OrthographicCamera(-1, 1, 1, -1, 0, 1);
+
+		renderer = new THREE.WebGLRenderer({
+			canvas,
+			antialias: true,
+			alpha: true,
+		});
+		renderer.setSize(window.innerWidth, window.innerHeight);
+
+		material = new THREE.ShaderMaterial({
+			vertexShader,
+			fragmentShader,
+			uniforms: {
+				uTime: { value: 0 },
+				uResolution: { value: new THREE.Vector2() },
+			},
+		});
+
+		const geometry = new THREE.PlaneGeometry(2, 2);
+		const mesh = new THREE.Mesh(geometry, material);
+		scene.add(mesh);
+
+		const onResize = () => {
+			renderer.setSize(window.innerWidth, window.innerHeight);
+			material.uniforms.uResolution.value.set(
+				window.innerWidth,
+				window.innerHeight,
+			);
+		};
+		window.addEventListener("resize", onResize);
+		onResize();
+
+		const animate = (time) => {
+			animationFrame = requestAnimationFrame(animate);
+			material.uniforms.uTime.value = time * 0.001;
+			renderer.render(scene, camera);
+		};
+		animate(0);
+
+		return () => {
+			window.removeEventListener("resize", onResize);
+		};
+	});
+
+	onDestroy(() => {
+		if (animationFrame) cancelAnimationFrame(animationFrame);
+		if (renderer) renderer.dispose();
+	});
+</script>
+
+<canvas bind:this={canvas} />
+
+<style>
+	:global(body) {
+		margin: 0;
+		overflow: hidden;
+		background: #1a1a1a;
+	}
+
+	canvas {
+		width: 100%;
+		height: 100%;
+		position: fixed;
+		top: 0;
+		left: 0;
+	}
+</style>

src/main.js

@@ -0,0 +1,10 @@
+import App from './App.svelte';
+
+const app = new App({
+	target: document.body,
+	props: {
+		name: 'world'
+	}
+});
+
+export default app;

src/shaders/fragmentShader.glsl

@@ -0,0 +1,28 @@
+uniform float u_time;
+uniform vec2 u_resolution;
+
+vec3 palette(float t) {
+  vec3 a = vec3(0.5, 0.5, 0.5);
+  vec3 b = vec3(0.5, 0.5, 0.5);
+  vec3 c = vec3(1.0, 1.0, 1.0);
+  vec3 d = vec3(0.263, 0.416, 0.557);
+  return a + b * cos(6.28318 * (c * t + d));
+}
+
+void main() {
+  vec2 uv = (gl_FragCoord.xy * 2.0 - u_resolution) / min(u_resolution.x, u_resolution.y);
+  vec2 uv0 = uv;
+  vec3 finalColor = vec3(0.0);
+
+  for (float i = 0.0; i < 3.0; i++) {
+    uv = fract(uv * 1.5) - 0.5;
+    float d = length(uv) * exp(-length(uv0));
+    vec3 col = palette(length(uv0) + i * 0.4 + u_time * 0.4);
+    d = sin(d * 8.0 + u_time) / 8.0;
+    d = abs(d);
+    d = pow(0.01 / d, 1.2);
+    finalColor += col * d;
+  }
+
+  gl_FragColor = vec4(finalColor, 1.0);
+}

src/shaders/vertexShader.glsl

@@ -0,0 +1,3 @@
+void main() {
+  gl_Position = vec4(position, 1.0);
+}