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feat: add map-3d-route example with 3D Map and custom route element
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‎.gitignore‎

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/node_modules
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/dist
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/.env*
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/examples/**/package-lock.json
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/examples/**/node_modules
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/examples/**/dist

‎examples/map-3d-route/README.md‎

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# 3D Map Route Example
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This is a standalone example demonstrating how to render a client-side 3D route using the modern `<gmp-route-3d>` custom element inside a client-side 3D Map (`<Map3D>`).
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It showcases the seamless integration of the Maps JS API routes and maps3d libraries in React.
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## Google Maps Platform API Key & Requirements
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To run this example locally, you must satisfy the following platform requirements:
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1. **Billing Enabled:** The Routes API and 3D Maps are premium Google Maps features and require a Google Cloud project with an **active billing account** linked to it.
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2. **Enabled APIs & Alpha Channel:** Ensure that both the **Routes API** and the **Maps JavaScript API** are explicitly enabled in your Google Cloud Console. **Note:** The `<gmp-route-3d>` custom element is currently only available in the **Alpha channel** (e.g., by setting `version="alpha"` on your `<APIProvider>`).
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3. **API Key Environment Variable:** The API key has to be provided via an environment variable `GOOGLE_MAPS_API_KEY`. This can be done by creating a file named `.env` in the example directory with the following content:
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```shell title=".env"
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GOOGLE_MAPS_API_KEY="<YOUR API KEY HERE>"
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```
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## WebGL2 Browser Compatibility
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Photorealistic 3D Maps require WebGL2 support and hardware graphics acceleration. Please refer to the official **[Google Maps 3D Maps Browser Support Guide](https://developers.google.com/maps/documentation/javascript/3d-maps-support)** for detailed browser requirements and system compatibility guidelines.
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*(Note: Virtual machine or remote desktop environments like Cloudtop do not support direct WebGL2 hardware rendering overlays by default. Please run the example locally on your physical host machine).*
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## Development & How to Run
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Go into the example directory:
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```shell
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cd examples/map-3d-route
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```
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Install dependencies and start the development server:
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```shell
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npm install
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npm run start-local
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```

‎examples/map-3d-route/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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<meta
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name="viewport"
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content="width=device-width, initial-scale=1.0, user-scalable=no" />
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<title>Example: 3D Map Route</title>
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<style>
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body {
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font-size: 16px;
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margin: 0;
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font-family: sans-serif;
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}
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#app {
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width: 100vw;
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height: 100vh;
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}
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</style>
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</head>
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<body>
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<div id="app"></div>
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<script type="module">
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import '@vis.gl/react-google-maps/examples.css';
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import '@vis.gl/react-google-maps/examples.js';
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import {renderToDom} from './src/app';
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renderToDom(document.querySelector('#app'));
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</script>
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</body>
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</html>

‎examples/map-3d-route/package.json‎

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{
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"type": "module",
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"dependencies": {
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"@googlemaps/js-api-loader": "^2.0.2",
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"@vis.gl/react-google-maps": "latest",
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"fast-deep-equal": "^3.1.3",
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"react": "^19.0.0",
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"react-dom": "^19.0.0",
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"typescript": "^6.0.3",
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"vite": "^5.4.11"
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},
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"scripts": {
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"start": "vite",
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"start-local": "vite --config ../vite.config.local.js",
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"build-local": "vite build --config ../vite.config.local.js",
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"build": "vite build"
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}
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}

‎examples/map-3d-route/src/app.css‎

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/* Styles for 3D Map Route Example */
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html, body, #app {
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width: 100%;
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height: 100%;
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margin: 0;
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padding: 0;
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overflow: hidden;
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}

‎examples/map-3d-route/src/app.tsx‎

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import React from 'react';
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import {createRoot} from 'react-dom/client';
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import {
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APIProvider,
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Map3D,
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useMapsLibrary
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} from '@vis.gl/react-google-maps';
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import ControlPanel from './control-panel';
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import './app.css';
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const API_KEY =
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globalThis.GOOGLE_MAPS_API_KEY ?? (process.env.GOOGLE_MAPS_API_KEY as string);
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// Tell TypeScript to allow the custom <gmp-route-3d> element
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declare global {
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namespace JSX {
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interface IntrinsicElements {
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'gmp-route-3d': React.DetailedHTMLProps<React.HTMLAttributes<HTMLElement>, HTMLElement> & {
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'autofits-camera'?: boolean;
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'departure-time'?: string;
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destination?: any;
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origin?: any;
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'routing-preference'?: string;
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'travel-mode'?: string;
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};
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}
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}
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}
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const Map3DRouteExample = () => {
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// Make sure routes and maps3d libraries are loaded to register the custom elements
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useMapsLibrary('routes');
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useMapsLibrary('maps3d');
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return (
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<>
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<Map3D
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defaultCenter={{lat: 43.67, lng: -79.40, altitude: 100}}
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defaultRange={12000}
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defaultHeading={0}
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defaultTilt={60}
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defaultRoll={0}
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defaultLabelsDisabled
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style={{width: '100vw', height: '100vh'}}>
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<gmp-route-3d
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origin={{lat: 43.65, lng: -79.38}}
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destination={{lat: 43.69, lng: -79.42}}
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travel-mode="DRIVING"
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/>
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</Map3D>
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</>
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);
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};
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const App = () => {
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return (
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<APIProvider apiKey={API_KEY} version="alpha">
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<Map3DRouteExample />
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<ControlPanel />
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</APIProvider>
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);
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};
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export default App;
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export function renderToDom(container: HTMLElement) {
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const root = createRoot(container);
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root.render(
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<React.StrictMode>
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<App />
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</React.StrictMode>
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);
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}

‎examples/map-3d-route/src/control-panel.css‎

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.control-panel {
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position: absolute;
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top: 20px;
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right: 20px;
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background: rgba(255, 255, 255, 0.95);
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padding: 15px;
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border-radius: 8px;
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box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
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max-width: 300px;
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z-index: 10;
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font-family: sans-serif;
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}
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.control-panel h3 {
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margin-top: 0;
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margin-bottom: 8px;
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font-size: 16px;
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}
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.control-panel p {
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font-size: 12px;
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margin: 0 0 10px 0;
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color: #4a5568;
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}
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.control-panel p.note {
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font-size: 11px;
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background: #edf2f7;
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padding: 6px;
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border-radius: 4px;
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}
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.control-panel .links a {
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font-size: 12px;
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color: #3182ce;
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text-decoration: none;
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}
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.control-panel p.note a {
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color: #3182ce;
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text-decoration: underline;
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}

‎examples/map-3d-route/src/control-panel.tsx‎

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import * as React from 'react';
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import './control-panel.css';
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function ControlPanel() {
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return (
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<div className="control-panel">
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<h3>3D Map Routes</h3>
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<p>
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This example demonstrates how to render a client-side 3D route using the
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modern <code>&lt;gmp-route-3d&gt;</code> custom element inside a 3D Map.
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</p>
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<p className={'note'}>
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<strong>Note:</strong> This utilizes custom 3D elements from the Maps JS API{' '}
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<a
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href="https://developers.google.com/maps/documentation/javascript/reference/routes-elements"
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target="_new">
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routes
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</a>{' '}
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and{' '}
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<a
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href="https://developers.google.com/maps/documentation/javascript/reference/3d-map"
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target="_new">
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maps3d
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</a>{' '}
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libraries.
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</p>
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<div className="links">
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<a
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href="https://github.com/visgl/react-google-maps/tree/main/examples/map-3d-route"
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target="_new">
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View Code ↗
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</a>
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</div>
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</div>
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);
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}
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export default React.memo(ControlPanel);

‎examples/map-3d-route/tsconfig.json‎

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{
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"extends": "../tsconfig.base.json",
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"compilerOptions": {
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"baseUrl": ".",
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"paths": {
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"website-examples/*": ["../*"]
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}
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}
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}

‎examples/map-3d-route/vite.config.js‎

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import {defineConfig, loadEnv} from 'vite';
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import {resolve} from 'node:path';
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export default defineConfig(({mode}) => {
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const {GOOGLE_MAPS_API_KEY = ''} = loadEnv(mode, resolve('../../'), '');
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return {
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envDir: '../../',
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define: {
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'process.env.GOOGLE_MAPS_API_KEY': JSON.stringify(GOOGLE_MAPS_API_KEY)
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},
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resolve: {
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alias: {
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'@vis.gl/react-google-maps/examples.js': resolve(
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'../../website/static/scripts/examples.js'
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),
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'@vis.gl/react-google-maps/examples.css': resolve(
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'../../examples/examples.css'
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),
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'@vis.gl/react-google-maps': resolve('../../src/index.ts'),
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'@googlemaps/js-api-loader': resolve('./node_modules/@googlemaps/js-api-loader'),
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'fast-deep-equal': resolve('./node_modules/fast-deep-equal'),
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'react': resolve('./node_modules/react'),
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'react-dom': resolve('./node_modules/react-dom')
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}
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}
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};
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});

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