init
This commit is contained in:
commit
8df4f7578f
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24
.gitignore
vendored
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24
.gitignore
vendored
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# Logs
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logs
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*.log
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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pnpm-debug.log*
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lerna-debug.log*
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node_modules
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dist
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dist-ssr
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*.local
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# Editor directories and files
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.vscode/*
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!.vscode/extensions.json
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.idea
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.DS_Store
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*.suo
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*.ntvs*
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*.njsproj
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*.sln
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*.sw?
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69
README.md
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69
README.md
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# React + TypeScript + Vite
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This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.
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Currently, two official plugins are available:
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- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Babel](https://babeljs.io/) for Fast Refresh
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- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/) for Fast Refresh
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## Expanding the ESLint configuration
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If you are developing a production application, we recommend updating the configuration to enable type-aware lint rules:
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```js
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export default tseslint.config([
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globalIgnores(['dist']),
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{
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files: ['**/*.{ts,tsx}'],
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extends: [
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// Other configs...
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// Remove tseslint.configs.recommended and replace with this
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...tseslint.configs.recommendedTypeChecked,
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// Alternatively, use this for stricter rules
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||||||
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...tseslint.configs.strictTypeChecked,
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// Optionally, add this for stylistic rules
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...tseslint.configs.stylisticTypeChecked,
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||||||
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// Other configs...
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],
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languageOptions: {
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parserOptions: {
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project: ['./tsconfig.node.json', './tsconfig.app.json'],
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tsconfigRootDir: import.meta.dirname,
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},
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// other options...
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},
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},
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])
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```
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You can also install [eslint-plugin-react-x](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-x) and [eslint-plugin-react-dom](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-dom) for React-specific lint rules:
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```js
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// eslint.config.js
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import reactX from 'eslint-plugin-react-x'
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import reactDom from 'eslint-plugin-react-dom'
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export default tseslint.config([
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globalIgnores(['dist']),
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{
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files: ['**/*.{ts,tsx}'],
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extends: [
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// Other configs...
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// Enable lint rules for React
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reactX.configs['recommended-typescript'],
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// Enable lint rules for React DOM
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reactDom.configs.recommended,
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],
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languageOptions: {
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|
parserOptions: {
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project: ['./tsconfig.node.json', './tsconfig.app.json'],
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tsconfigRootDir: import.meta.dirname,
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|
},
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// other options...
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},
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},
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])
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```
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23
eslint.config.js
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23
eslint.config.js
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import js from '@eslint/js'
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import globals from 'globals'
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import reactHooks from 'eslint-plugin-react-hooks'
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import reactRefresh from 'eslint-plugin-react-refresh'
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import tseslint from 'typescript-eslint'
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import { globalIgnores } from 'eslint/config'
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export default tseslint.config([
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globalIgnores(['dist']),
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{
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files: ['**/*.{ts,tsx}'],
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extends: [
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|
js.configs.recommended,
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tseslint.configs.recommended,
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|
reactHooks.configs['recommended-latest'],
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reactRefresh.configs.vite,
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],
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languageOptions: {
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ecmaVersion: 2020,
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globals: globals.browser,
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},
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},
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])
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13
index.html
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13
index.html
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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<link rel="icon" type="image/svg+xml" href="/vite.svg" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>Vite + React + TS</title>
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</head>
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<body>
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<div id="root"></div>
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<script type="module" src="/src/main.tsx"></script>
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</body>
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</html>
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32
package.json
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32
package.json
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{
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"name": "physics",
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"private": true,
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"version": "0.0.0",
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"type": "module",
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"scripts": {
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"dev": "vite",
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"build": "tsc -b && vite build",
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"lint": "eslint .",
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"preview": "vite preview"
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},
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"dependencies": {
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"@tailwindcss/vite": "^4.1.12",
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"react": "^19.1.1",
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"react-dom": "^19.1.1",
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|
"tailwindcss": "^4.1.12"
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|
},
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"devDependencies": {
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|
"@eslint/js": "^9.33.0",
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"@types/react": "^19.1.10",
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"@types/react-dom": "^19.1.7",
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|
"@vitejs/plugin-react-swc": "^4.0.0",
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|
"eslint": "^9.33.0",
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|
"eslint-plugin-react-hooks": "^5.2.0",
|
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|
"eslint-plugin-react-refresh": "^0.4.20",
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|
"globals": "^16.3.0",
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|
"typescript": "~5.8.3",
|
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|
"typescript-eslint": "^8.39.1",
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|
"vite": "^7.1.2"
|
||||||
|
},
|
||||||
|
"packageManager": "pnpm@10.13.1+sha512.37ebf1a5c7a30d5fabe0c5df44ee8da4c965ca0c5af3dbab28c3a1681b70a256218d05c81c9c0dcf767ef6b8551eb5b960042b9ed4300c59242336377e01cfad"
|
||||||
|
}
|
||||||
2253
pnpm-lock.yaml
generated
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2253
pnpm-lock.yaml
generated
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4
pnpm-workspace.yaml
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4
pnpm-workspace.yaml
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onlyBuiltDependencies:
|
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|
- '@swc/core'
|
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|
- '@tailwindcss/oxide'
|
||||||
|
- esbuild
|
||||||
1
public/vite.svg
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1
public/vite.svg
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<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>
|
||||||
|
After Width: | Height: | Size: 1.5 KiB |
0
src/App.css
Normal file
0
src/App.css
Normal file
37
src/App.tsx
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37
src/App.tsx
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|
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|
import './App.css'
|
||||||
|
import Pendulum from './pendulum/mod'
|
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|
import Tabs, { Tab, TabPanel } from './components/Tabs'
|
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|
|
||||||
|
function App() {
|
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|
return (
|
||||||
|
<main className='container mx-auto p-4'>
|
||||||
|
<h1 className='text-2xl font-bold text-center mb-4'>
|
||||||
|
Welcome to the Physics App
|
||||||
|
</h1>
|
||||||
|
|
||||||
|
<div className="border rounded-lg p-3">
|
||||||
|
<Tabs defaultActive="pendulum">
|
||||||
|
<div className="flex gap-2 mb-3" role="tablist">
|
||||||
|
<Tab id="pendulum">Pendulum</Tab>
|
||||||
|
<Tab id="placeholder">Other Example</Tab>
|
||||||
|
</div>
|
||||||
|
|
||||||
|
<TabPanel id="pendulum">
|
||||||
|
<div className="h-96">
|
||||||
|
<Pendulum />
|
||||||
|
</div>
|
||||||
|
</TabPanel>
|
||||||
|
|
||||||
|
<TabPanel id="placeholder">
|
||||||
|
<div className="p-4">
|
||||||
|
<h2 className="text-lg font-semibold">Another Example</h2>
|
||||||
|
<p className="text-sm text-gray-600">Replace this with your new example component.</p>
|
||||||
|
</div>
|
||||||
|
</TabPanel>
|
||||||
|
</Tabs>
|
||||||
|
</div>
|
||||||
|
</main>
|
||||||
|
)
|
||||||
|
}
|
||||||
|
|
||||||
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export default App
|
||||||
1
src/assets/react.svg
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1
src/assets/react.svg
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||||||
|
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="35.93" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 228"><path fill="#00D8FF" d="M210.483 73.824a171.49 171.49 0 0 0-8.24-2.597c.465-1.9.893-3.777 1.273-5.621c6.238-30.281 2.16-54.676-11.769-62.708c-13.355-7.7-35.196.329-57.254 19.526a171.23 171.23 0 0 0-6.375 5.848a155.866 155.866 0 0 0-4.241-3.917C100.759 3.829 77.587-4.822 63.673 3.233C50.33 10.957 46.379 33.89 51.995 62.588a170.974 170.974 0 0 0 1.892 8.48c-3.28.932-6.445 1.924-9.474 2.98C17.309 83.498 0 98.307 0 113.668c0 15.865 18.582 31.778 46.812 41.427a145.52 145.52 0 0 0 6.921 2.165a167.467 167.467 0 0 0-2.01 9.138c-5.354 28.2-1.173 50.591 12.134 58.266c13.744 7.926 36.812-.22 59.273-19.855a145.567 145.567 0 0 0 5.342-4.923a168.064 168.064 0 0 0 6.92 6.314c21.758 18.722 43.246 26.282 56.54 18.586c13.731-7.949 18.194-32.003 12.4-61.268a145.016 145.016 0 0 0-1.535-6.842c1.62-.48 3.21-.974 4.76-1.488c29.348-9.723 48.443-25.443 48.443-41.52c0-15.417-17.868-30.326-45.517-39.844Zm-6.365 70.984c-1.4.463-2.836.91-4.3 1.345c-3.24-10.257-7.612-21.163-12.963-32.432c5.106-11 9.31-21.767 12.459-31.957c2.619.758 5.16 1.557 7.61 2.4c23.69 8.156 38.14 20.213 38.14 29.504c0 9.896-15.606 22.743-40.946 31.14Zm-10.514 20.834c2.562 12.94 2.927 24.64 1.23 33.787c-1.524 8.219-4.59 13.698-8.382 15.893c-8.067 4.67-25.32-1.4-43.927-17.412a156.726 156.726 0 0 1-6.437-5.87c7.214-7.889 14.423-17.06 21.459-27.246c12.376-1.098 24.068-2.894 34.671-5.345a134.17 134.17 0 0 1 1.386 6.193ZM87.276 214.515c-7.882 2.783-14.16 2.863-17.955.675c-8.075-4.657-11.432-22.636-6.853-46.752a156.923 156.923 0 0 1 1.869-8.499c10.486 2.32 22.093 3.988 34.498 4.994c7.084 9.967 14.501 19.128 21.976 27.15a134.668 134.668 0 0 1-4.877 4.492c-9.933 8.682-19.886 14.842-28.658 17.94ZM50.35 144.747c-12.483-4.267-22.792-9.812-29.858-15.863c-6.35-5.437-9.555-10.836-9.555-15.216c0-9.322 13.897-21.212 37.076-29.293c2.813-.98 5.757-1.905 8.812-2.773c3.204 10.42 7.406 21.315 12.477 32.332c-5.137 11.18-9.399 22.249-12.634 32.792a134.718 134.718 0 0 1-6.318-1.979Zm12.378-84.26c-4.811-24.587-1.616-43.134 6.425-47.789c8.564-4.958 27.502 2.111 47.463 19.835a144.318 144.318 0 0 1 3.841 3.545c-7.438 7.987-14.787 17.08-21.808 26.988c-12.04 1.116-23.565 2.908-34.161 5.309a160.342 160.342 0 0 1-1.76-7.887Zm110.427 27.268a347.8 347.8 0 0 0-7.785-12.803c8.168 1.033 15.994 2.404 23.343 4.08c-2.206 7.072-4.956 14.465-8.193 22.045a381.151 381.151 0 0 0-7.365-13.322Zm-45.032-43.861c5.044 5.465 10.096 11.566 15.065 18.186a322.04 322.04 0 0 0-30.257-.006c4.974-6.559 10.069-12.652 15.192-18.18ZM82.802 87.83a323.167 323.167 0 0 0-7.227 13.238c-3.184-7.553-5.909-14.98-8.134-22.152c7.304-1.634 15.093-2.97 23.209-3.984a321.524 321.524 0 0 0-7.848 12.897Zm8.081 65.352c-8.385-.936-16.291-2.203-23.593-3.793c2.26-7.3 5.045-14.885 8.298-22.6a321.187 321.187 0 0 0 7.257 13.246c2.594 4.48 5.28 8.868 8.038 13.147Zm37.542 31.03c-5.184-5.592-10.354-11.779-15.403-18.433c4.902.192 9.899.29 14.978.29c5.218 0 10.376-.117 15.453-.343c-4.985 6.774-10.018 12.97-15.028 18.486Zm52.198-57.817c3.422 7.8 6.306 15.345 8.596 22.52c-7.422 1.694-15.436 3.058-23.88 4.071a382.417 382.417 0 0 0 7.859-13.026a347.403 347.403 0 0 0 7.425-13.565Zm-16.898 8.101a358.557 358.557 0 0 1-12.281 19.815a329.4 329.4 0 0 1-23.444.823c-7.967 0-15.716-.248-23.178-.732a310.202 310.202 0 0 1-12.513-19.846h.001a307.41 307.41 0 0 1-10.923-20.627a310.278 310.278 0 0 1 10.89-20.637l-.001.001a307.318 307.318 0 0 1 12.413-19.761c7.613-.576 15.42-.876 23.31-.876H128c7.926 0 15.743.303 23.354.883a329.357 329.357 0 0 1 12.335 19.695a358.489 358.489 0 0 1 11.036 20.54a329.472 329.472 0 0 1-11 20.722Zm22.56-122.124c8.572 4.944 11.906 24.881 6.52 51.026c-.344 1.668-.73 3.367-1.15 5.09c-10.622-2.452-22.155-4.275-34.23-5.408c-7.034-10.017-14.323-19.124-21.64-27.008a160.789 160.789 0 0 1 5.888-5.4c18.9-16.447 36.564-22.941 44.612-18.3ZM128 90.808c12.625 0 22.86 10.235 22.86 22.86s-10.235 22.86-22.86 22.86s-22.86-10.235-22.86-22.86s10.235-22.86 22.86-22.86Z"></path></svg>
|
||||||
|
After Width: | Height: | Size: 4 KiB |
109
src/components/Tabs.tsx
Normal file
109
src/components/Tabs.tsx
Normal file
|
|
@ -0,0 +1,109 @@
|
||||||
|
import { createContext, useContext, useEffect, useRef, useState } from "react";
|
||||||
|
import type { ReactNode, KeyboardEvent } from "react";
|
||||||
|
|
||||||
|
type TabsContextType = {
|
||||||
|
activeId: string | null;
|
||||||
|
setActiveId: (id: string) => void;
|
||||||
|
registerTab: (id: string) => void;
|
||||||
|
tabs: string[];
|
||||||
|
};
|
||||||
|
|
||||||
|
const TabsContext = createContext<TabsContextType | null>(null);
|
||||||
|
|
||||||
|
export default function Tabs({
|
||||||
|
children,
|
||||||
|
defaultActive,
|
||||||
|
}: {
|
||||||
|
children: ReactNode;
|
||||||
|
defaultActive?: string;
|
||||||
|
}) {
|
||||||
|
const [activeId, setActiveId] = useState<string | null>(defaultActive ?? null);
|
||||||
|
const tabsRef = useRef<string[]>([]);
|
||||||
|
|
||||||
|
const registerTab = (id: string) => {
|
||||||
|
if (!tabsRef.current.includes(id)) {
|
||||||
|
tabsRef.current.push(id);
|
||||||
|
// if no active tab yet, pick the first registered one
|
||||||
|
if (!activeId) setActiveId(id);
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
useEffect(() => {
|
||||||
|
// if a defaultActive is provided and tabs register after mount,
|
||||||
|
// ensure it's respected
|
||||||
|
if (defaultActive) setActiveId(defaultActive);
|
||||||
|
}, [defaultActive]);
|
||||||
|
|
||||||
|
return (
|
||||||
|
<TabsContext.Provider
|
||||||
|
value={{ activeId, setActiveId: (id: string) => setActiveId(id), registerTab, tabs: tabsRef.current }}
|
||||||
|
>
|
||||||
|
{children}
|
||||||
|
</TabsContext.Provider>
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
export function Tab({ id, children }: { id: string; children: ReactNode }) {
|
||||||
|
const ctx = useContext(TabsContext);
|
||||||
|
if (!ctx) throw new Error("Tab must be used inside Tabs");
|
||||||
|
const { activeId, setActiveId, registerTab, tabs } = ctx;
|
||||||
|
const ref = useRef<HTMLButtonElement | null>(null);
|
||||||
|
|
||||||
|
useEffect(() => registerTab(id), [id, registerTab]);
|
||||||
|
|
||||||
|
const handleKey = (e: KeyboardEvent) => {
|
||||||
|
if (!tabs || tabs.length === 0) return;
|
||||||
|
const idx = tabs.indexOf(id);
|
||||||
|
if (idx === -1) return;
|
||||||
|
if (e.key === "ArrowRight") {
|
||||||
|
const next = tabs[(idx + 1) % tabs.length];
|
||||||
|
setActiveId(next);
|
||||||
|
// focus next button (if present)
|
||||||
|
// slight delay to ensure it's mounted
|
||||||
|
setTimeout(() => {
|
||||||
|
const btn = document.querySelector<HTMLButtonElement>(`button[data-tab-id="${next}"]`);
|
||||||
|
btn?.focus();
|
||||||
|
}, 0);
|
||||||
|
e.preventDefault();
|
||||||
|
} else if (e.key === "ArrowLeft") {
|
||||||
|
const prev = tabs[(idx - 1 + tabs.length) % tabs.length];
|
||||||
|
setActiveId(prev);
|
||||||
|
setTimeout(() => {
|
||||||
|
const btn = document.querySelector<HTMLButtonElement>(`button[data-tab-id="${prev}"]`);
|
||||||
|
btn?.focus();
|
||||||
|
}, 0);
|
||||||
|
e.preventDefault();
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
const selected = activeId === id;
|
||||||
|
|
||||||
|
return (
|
||||||
|
<button
|
||||||
|
ref={ref}
|
||||||
|
data-tab-id={id}
|
||||||
|
role="tab"
|
||||||
|
aria-selected={selected}
|
||||||
|
onClick={() => setActiveId(id)}
|
||||||
|
onKeyDown={handleKey}
|
||||||
|
className={
|
||||||
|
"px-3 py-1 rounded-md focus:outline-none " +
|
||||||
|
(selected ? "bg-gray-200 dark:bg-gray-700 font-semibold" : "hover:bg-gray-100 dark:hover:bg-gray-800")
|
||||||
|
}
|
||||||
|
>
|
||||||
|
{children}
|
||||||
|
</button>
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
export function TabPanel({ id, children }: { id: string; children: ReactNode }) {
|
||||||
|
const ctx = useContext(TabsContext);
|
||||||
|
if (!ctx) throw new Error("TabPanel must be used inside Tabs");
|
||||||
|
const { activeId } = ctx;
|
||||||
|
if (activeId !== id) return null;
|
||||||
|
return (
|
||||||
|
<div role="tabpanel" aria-hidden={activeId !== id} className="w-full">
|
||||||
|
{children}
|
||||||
|
</div>
|
||||||
|
);
|
||||||
|
}
|
||||||
14
src/index.css
Normal file
14
src/index.css
Normal file
|
|
@ -0,0 +1,14 @@
|
||||||
|
@import "tailwindcss";
|
||||||
|
|
||||||
|
:root {
|
||||||
|
font-family: system-ui, Avenir, Helvetica, Arial, sans-serif;
|
||||||
|
line-height: 1.5;
|
||||||
|
font-weight: 400;
|
||||||
|
|
||||||
|
color-scheme: light dark;
|
||||||
|
|
||||||
|
font-synthesis: none;
|
||||||
|
text-rendering: optimizeLegibility;
|
||||||
|
-webkit-font-smoothing: antialiased;
|
||||||
|
-moz-osx-font-smoothing: grayscale;
|
||||||
|
}
|
||||||
10
src/main.tsx
Normal file
10
src/main.tsx
Normal file
|
|
@ -0,0 +1,10 @@
|
||||||
|
import { StrictMode } from 'react'
|
||||||
|
import { createRoot } from 'react-dom/client'
|
||||||
|
import './index.css'
|
||||||
|
import App from './App.tsx'
|
||||||
|
|
||||||
|
createRoot(document.getElementById('root')!).render(
|
||||||
|
<StrictMode>
|
||||||
|
<App />
|
||||||
|
</StrictMode>,
|
||||||
|
)
|
||||||
260
src/pendulum/mod.tsx
Normal file
260
src/pendulum/mod.tsx
Normal file
|
|
@ -0,0 +1,260 @@
|
||||||
|
import { useEffect, useRef, useState } from "react";
|
||||||
|
|
||||||
|
// x, y 2D point
|
||||||
|
type Point = [number, number];
|
||||||
|
|
||||||
|
type BallState = {
|
||||||
|
pos: Point;
|
||||||
|
prevPos: Point; // 이전 위치
|
||||||
|
mass: number;
|
||||||
|
prevDt: number; // 이전 프레임의 dt
|
||||||
|
isFixed?: boolean;
|
||||||
|
}
|
||||||
|
|
||||||
|
type ConstraintState = {
|
||||||
|
p1Idx: number; // index of first ball
|
||||||
|
p2Idx: number; // index of second ball
|
||||||
|
restLength: number; // rest length of the constraint
|
||||||
|
stiffness: number; // stiffness of the constraint (0 to 1)
|
||||||
|
}
|
||||||
|
|
||||||
|
type WorldState = {
|
||||||
|
balls: BallState[];
|
||||||
|
constraints: ConstraintState[];
|
||||||
|
|
||||||
|
ballDrawers: BallDrawer[];
|
||||||
|
}
|
||||||
|
|
||||||
|
const SCENE_GRAVITY: Point = [0, 9.81 * 100]; // gravitational acceleration
|
||||||
|
|
||||||
|
function updateUnconstrainedBall(ball: BallState, dt: number = 0.016) {
|
||||||
|
if (ball.isFixed) return;
|
||||||
|
// Verlet integration with variable dt
|
||||||
|
const acc: Point = [SCENE_GRAVITY[0], SCENE_GRAVITY[1]];
|
||||||
|
const nextPos: Point = [
|
||||||
|
ball.pos[0] + (ball.pos[0] - ball.prevPos[0]) * (dt / ball.prevDt) + acc[0]
|
||||||
|
* (dt + ball.prevDt) / 2
|
||||||
|
* dt,
|
||||||
|
ball.pos[1] + (ball.pos[1] - ball.prevPos[1]) * (dt / ball.prevDt) + acc[1]
|
||||||
|
* (dt + ball.prevDt) / 2
|
||||||
|
* dt,
|
||||||
|
];
|
||||||
|
ball.prevPos = [...ball.pos];
|
||||||
|
ball.pos = nextPos;
|
||||||
|
ball.prevDt = dt;
|
||||||
|
}
|
||||||
|
|
||||||
|
class BallDrawer {
|
||||||
|
radius: number;
|
||||||
|
previousPositions: Point[] = []; // 이동 경로 저장
|
||||||
|
maxPositions: number;
|
||||||
|
constructor({ radius = 10, maxPositions = 60 }: { radius?: number; maxPositions?: number } = {}) {
|
||||||
|
this.maxPositions = maxPositions;
|
||||||
|
this.radius = radius;
|
||||||
|
}
|
||||||
|
draw(ctx: CanvasRenderingContext2D, ball: BallState) {
|
||||||
|
// 이동 경로 저장
|
||||||
|
this.previousPositions.push([ball.pos[0], ball.pos[1]]);
|
||||||
|
if (this.previousPositions.length > this.maxPositions) { // 최대 maxPositions개만 저장
|
||||||
|
this.previousPositions.shift();
|
||||||
|
}
|
||||||
|
// 이동 경로 그리기 (알파값 점점 낮추기)
|
||||||
|
ctx.save();
|
||||||
|
if (this.previousPositions.length > 1) {
|
||||||
|
ctx.lineWidth = 2;
|
||||||
|
for (let i = 1; i < this.previousPositions.length; i++) {
|
||||||
|
const alpha = (i / this.previousPositions.length); // 오래된 점일수록 더 투명
|
||||||
|
ctx.strokeStyle = `rgba(0,0,255,${alpha * 0.5})`;
|
||||||
|
ctx.beginPath();
|
||||||
|
ctx.moveTo(this.previousPositions[i - 1][0], this.previousPositions[i - 1][1]);
|
||||||
|
ctx.lineTo(this.previousPositions[i][0], this.previousPositions[i][1]);
|
||||||
|
ctx.stroke();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
ctx.beginPath();
|
||||||
|
ctx.arc(ball.pos[0], ball.pos[1], this.radius, 0, Math.PI * 2);
|
||||||
|
ctx.fillStyle = "blue";
|
||||||
|
ctx.fill();
|
||||||
|
ctx.restore();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
function satisfyConstraint(ball1: BallState, ball2: BallState, constraint: ConstraintState) {
|
||||||
|
const dx = ball2.pos[0] - ball1.pos[0];
|
||||||
|
const dy = ball2.pos[1] - ball1.pos[1];
|
||||||
|
const length = Math.sqrt(dx * dx + dy * dy);
|
||||||
|
if (length == 0) return; // avoid division by zero
|
||||||
|
const diff = length - constraint.restLength;
|
||||||
|
const invMass1 = 1 / ball1.mass;
|
||||||
|
const invMass2 = 1 / ball2.mass;
|
||||||
|
const sumInvMass = invMass1 + invMass2;
|
||||||
|
if (sumInvMass == 0) return; // both infinite mass. we can't move them
|
||||||
|
const p1Prop = invMass1 / sumInvMass;
|
||||||
|
const p2Prop = invMass2 / sumInvMass;
|
||||||
|
|
||||||
|
// positional correction
|
||||||
|
const correction = diff * constraint.stiffness / length;
|
||||||
|
ball1.pos[0] += dx * correction * p1Prop;
|
||||||
|
ball1.pos[1] += dy * correction * p1Prop;
|
||||||
|
ball2.pos[0] -= dx * correction * p2Prop;
|
||||||
|
ball2.pos[1] -= dy * correction * p2Prop;
|
||||||
|
}
|
||||||
|
|
||||||
|
function drawConstraint(ctx: CanvasRenderingContext2D, ball1: BallState, ball2: BallState) {
|
||||||
|
ctx.beginPath();
|
||||||
|
ctx.moveTo(ball1.pos[0], ball1.pos[1]);
|
||||||
|
ctx.lineTo(ball2.pos[0], ball2.pos[1]);
|
||||||
|
ctx.strokeStyle = "black";
|
||||||
|
ctx.lineWidth = 2;
|
||||||
|
ctx.stroke();
|
||||||
|
}
|
||||||
|
|
||||||
|
function updateWorld(world: WorldState, dt: number = 0.016, constraintIterations: number = 50) {
|
||||||
|
// unconstrained motion
|
||||||
|
for (const ball of world.balls) {
|
||||||
|
updateUnconstrainedBall(ball, dt);
|
||||||
|
}
|
||||||
|
// constraints
|
||||||
|
for (let i = 0; i < constraintIterations; i++) {
|
||||||
|
for (const constraint of world.constraints) {
|
||||||
|
const b1 = world.balls[constraint.p1Idx];
|
||||||
|
const b2 = world.balls[constraint.p2Idx];
|
||||||
|
satisfyConstraint(b1, b2, constraint);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
function drawWorld(ctx: CanvasRenderingContext2D, world: WorldState,) {
|
||||||
|
// draw constraints
|
||||||
|
for (const constraint of world.constraints) {
|
||||||
|
const b1 = world.balls[constraint.p1Idx];
|
||||||
|
const b2 = world.balls[constraint.p2Idx];
|
||||||
|
drawConstraint(ctx, b1, b2);
|
||||||
|
}
|
||||||
|
// draw balls
|
||||||
|
for (let i = 0; i < world.balls.length; i++) {
|
||||||
|
const ball = world.balls[i];
|
||||||
|
const drawer = world.ballDrawers[i];
|
||||||
|
drawer.draw(ctx, ball);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
function getDefaultMyWorld() {
|
||||||
|
const balls: BallState[] = [
|
||||||
|
{ pos: [200, 50], prevPos: [200, 50], mass: Infinity, prevDt: 0.016, isFixed: true },
|
||||||
|
{ pos: [300, 50], prevPos: [300, 50], mass: 1, prevDt: 0.016 },
|
||||||
|
{ pos: [300, 0], prevPos: [300, 0], mass: 1, prevDt: 0.016 },
|
||||||
|
];
|
||||||
|
const constraints: ConstraintState[] = [
|
||||||
|
{ p1Idx: 0, p2Idx: 1, restLength: 100, stiffness: 1 },
|
||||||
|
{ p1Idx: 1, p2Idx: 2, restLength: 50, stiffness: 1},
|
||||||
|
];
|
||||||
|
const ballDrawers = [
|
||||||
|
new BallDrawer({ radius: 10 }),
|
||||||
|
new BallDrawer({ radius: 10 }),
|
||||||
|
new BallDrawer({ radius: 10 }),
|
||||||
|
];
|
||||||
|
return { balls, constraints, ballDrawers };
|
||||||
|
}
|
||||||
|
|
||||||
|
export default function Pendulum() {
|
||||||
|
const canvasRef = useRef<HTMLCanvasElement>(null);
|
||||||
|
const [subStep, setSubStep] = useState(10); // number of sub-steps per frame
|
||||||
|
const [constraintIterations, setConstraintIterations] = useState(1); // number of constraint iterations per sub-step
|
||||||
|
|
||||||
|
// refs to hold pendulum instances and animation state so we can reset from UI
|
||||||
|
const worldRef = useRef<WorldState | null>(null);
|
||||||
|
const rafRef = useRef<number | null>(null);
|
||||||
|
const prevTimeRef = useRef<number>(0);
|
||||||
|
|
||||||
|
useEffect(() => {
|
||||||
|
const canvas = canvasRef.current;
|
||||||
|
if (!canvas) return;
|
||||||
|
|
||||||
|
const ctx = canvas.getContext("2d");
|
||||||
|
if (!ctx) return;
|
||||||
|
|
||||||
|
const dpr = window.devicePixelRatio || 1;
|
||||||
|
const resize = () => {
|
||||||
|
const w = canvas.clientWidth || 600;
|
||||||
|
const h = canvas.clientHeight || 400;
|
||||||
|
canvas.width = Math.max(1, Math.round(w * dpr));
|
||||||
|
canvas.height = Math.max(1, Math.round(h * dpr));
|
||||||
|
// scale drawing so 1 unit == 1 CSS pixel
|
||||||
|
ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
|
||||||
|
};
|
||||||
|
resize();
|
||||||
|
window.addEventListener("resize", resize);
|
||||||
|
|
||||||
|
if (!worldRef.current) {
|
||||||
|
// create a simple pendulum world
|
||||||
|
worldRef.current = getDefaultMyWorld();
|
||||||
|
}
|
||||||
|
|
||||||
|
prevTimeRef.current = performance.now();
|
||||||
|
|
||||||
|
const animate = (time: number) => {
|
||||||
|
const deltaTime = time - prevTimeRef.current;
|
||||||
|
prevTimeRef.current = time;
|
||||||
|
|
||||||
|
const dt = Math.min(0.1, deltaTime / 1000) / subStep; // cap deltaTime to avoid large jumps
|
||||||
|
for (let i = 0; i < subStep; i++) {
|
||||||
|
updateWorld(worldRef.current!, dt, constraintIterations);
|
||||||
|
}
|
||||||
|
|
||||||
|
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
|
||||||
|
drawWorld(ctx, worldRef.current!);
|
||||||
|
|
||||||
|
rafRef.current = requestAnimationFrame(animate);
|
||||||
|
};
|
||||||
|
rafRef.current = requestAnimationFrame(animate);
|
||||||
|
|
||||||
|
return () => {
|
||||||
|
window.removeEventListener("resize", resize);
|
||||||
|
if (rafRef.current) cancelAnimationFrame(rafRef.current);
|
||||||
|
};
|
||||||
|
}, [constraintIterations, subStep]);
|
||||||
|
|
||||||
|
// reset handler to re-create pendulums and avoid large dt on next frame
|
||||||
|
const reset = () => {
|
||||||
|
worldRef.current = getDefaultMyWorld();
|
||||||
|
prevTimeRef.current = performance.now();
|
||||||
|
};
|
||||||
|
|
||||||
|
return (
|
||||||
|
<div className="w-full h-full flex flex-col">
|
||||||
|
<div className="p-2">
|
||||||
|
<button
|
||||||
|
onClick={reset}
|
||||||
|
className="px-3 py-1.5 rounded border border-gray-300 bg-white text-sm hover:bg-gray-50 focus:outline-none"
|
||||||
|
>
|
||||||
|
리셋
|
||||||
|
</button>
|
||||||
|
<label className="ml-4 text-sm">
|
||||||
|
서브스텝:
|
||||||
|
<input
|
||||||
|
type="number"
|
||||||
|
value={subStep}
|
||||||
|
onChange={(e) => setSubStep(Math.max(1, Math.min(100, Number(e.target.value))))}
|
||||||
|
className="ml-2 w-16 px-2 py-1 border border-gray-300 rounded focus:outline-none"
|
||||||
|
/>
|
||||||
|
</label>
|
||||||
|
<label className="ml-4 text-sm">
|
||||||
|
제약 반복 횟수:
|
||||||
|
<input
|
||||||
|
type="number"
|
||||||
|
value={constraintIterations}
|
||||||
|
onChange={(e) => setConstraintIterations(Math.max(1, Math.min(200, Number(e.target.value))))}
|
||||||
|
className="ml-2 w-16 px-2 py-1 border border-gray-300 rounded focus:outline-none"
|
||||||
|
/>
|
||||||
|
</label>
|
||||||
|
</div>
|
||||||
|
<div className="flex-1 min-h-0">
|
||||||
|
<canvas
|
||||||
|
ref={canvasRef}
|
||||||
|
className="w-full h-full"
|
||||||
|
/>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
);
|
||||||
|
}
|
||||||
1
src/vite-env.d.ts
vendored
Normal file
1
src/vite-env.d.ts
vendored
Normal file
|
|
@ -0,0 +1 @@
|
||||||
|
/// <reference types="vite/client" />
|
||||||
27
tsconfig.app.json
Normal file
27
tsconfig.app.json
Normal file
|
|
@ -0,0 +1,27 @@
|
||||||
|
{
|
||||||
|
"compilerOptions": {
|
||||||
|
"tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
|
||||||
|
"target": "ES2022",
|
||||||
|
"useDefineForClassFields": true,
|
||||||
|
"lib": ["ES2022", "DOM", "DOM.Iterable"],
|
||||||
|
"module": "ESNext",
|
||||||
|
"skipLibCheck": true,
|
||||||
|
|
||||||
|
/* Bundler mode */
|
||||||
|
"moduleResolution": "bundler",
|
||||||
|
"allowImportingTsExtensions": true,
|
||||||
|
"verbatimModuleSyntax": true,
|
||||||
|
"moduleDetection": "force",
|
||||||
|
"noEmit": true,
|
||||||
|
"jsx": "react-jsx",
|
||||||
|
|
||||||
|
/* Linting */
|
||||||
|
"strict": true,
|
||||||
|
"noUnusedLocals": true,
|
||||||
|
"noUnusedParameters": true,
|
||||||
|
"erasableSyntaxOnly": true,
|
||||||
|
"noFallthroughCasesInSwitch": true,
|
||||||
|
"noUncheckedSideEffectImports": true
|
||||||
|
},
|
||||||
|
"include": ["src"]
|
||||||
|
}
|
||||||
7
tsconfig.json
Normal file
7
tsconfig.json
Normal file
|
|
@ -0,0 +1,7 @@
|
||||||
|
{
|
||||||
|
"files": [],
|
||||||
|
"references": [
|
||||||
|
{ "path": "./tsconfig.app.json" },
|
||||||
|
{ "path": "./tsconfig.node.json" }
|
||||||
|
]
|
||||||
|
}
|
||||||
25
tsconfig.node.json
Normal file
25
tsconfig.node.json
Normal file
|
|
@ -0,0 +1,25 @@
|
||||||
|
{
|
||||||
|
"compilerOptions": {
|
||||||
|
"tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
|
||||||
|
"target": "ES2023",
|
||||||
|
"lib": ["ES2023"],
|
||||||
|
"module": "ESNext",
|
||||||
|
"skipLibCheck": true,
|
||||||
|
|
||||||
|
/* Bundler mode */
|
||||||
|
"moduleResolution": "bundler",
|
||||||
|
"allowImportingTsExtensions": true,
|
||||||
|
"verbatimModuleSyntax": true,
|
||||||
|
"moduleDetection": "force",
|
||||||
|
"noEmit": true,
|
||||||
|
|
||||||
|
/* Linting */
|
||||||
|
"strict": true,
|
||||||
|
"noUnusedLocals": true,
|
||||||
|
"noUnusedParameters": true,
|
||||||
|
"erasableSyntaxOnly": true,
|
||||||
|
"noFallthroughCasesInSwitch": true,
|
||||||
|
"noUncheckedSideEffectImports": true
|
||||||
|
},
|
||||||
|
"include": ["vite.config.ts"]
|
||||||
|
}
|
||||||
8
vite.config.ts
Normal file
8
vite.config.ts
Normal file
|
|
@ -0,0 +1,8 @@
|
||||||
|
import { defineConfig } from 'vite'
|
||||||
|
import react from '@vitejs/plugin-react-swc'
|
||||||
|
import tailwindcss from '@tailwindcss/vite'
|
||||||
|
|
||||||
|
// https://vite.dev/config/
|
||||||
|
export default defineConfig({
|
||||||
|
plugins: [ tailwindcss(), react()],
|
||||||
|
})
|
||||||
Loading…
Add table
Reference in a new issue