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doripjonov
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added webcam demo folder
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‎webcam_demo/.gitignore

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# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
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# dependencies
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/node_modules
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/.pnp
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.pnp.js
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# testing
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/coverage
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# production
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/build
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# misc
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.DS_Store
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.env.local
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.env.development.local
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.env.test.local
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.env.production.local
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*

‎webcam_demo/package.json

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{
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"name": "webcam-tutorial",
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"version": "0.1.0",
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"private": true,
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"dependencies": {
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"@exadel/compreface-js-sdk": "^0.5.0",
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"@testing-library/jest-dom": "^5.11.4",
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"@testing-library/react": "^11.1.0",
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"@testing-library/user-event": "^12.1.10",
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"compreface-javascript-sdk": "^1.0.1",
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"react": "^17.0.2",
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"react-dom": "^17.0.2",
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"react-scripts": "4.0.3",
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"web-vitals": "^1.0.1"
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},
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"scripts": {
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"start": "react-scripts start",
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"build": "react-scripts build",
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"test": "react-scripts test",
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"eject": "react-scripts eject"
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},
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"eslintConfig": {
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"extends": [
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"react-app",
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"react-app/jest"
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]
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},
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"browserslist": {
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"production": [
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">0.2%",
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"not dead",
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"not op_mini all"
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],
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"development": [
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"last 1 chrome version",
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"last 1 firefox version",
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"last 1 safari version"
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]
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}
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}

‎webcam_demo/public/favicon.ico

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‎webcam_demo/public/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" href="%PUBLIC_URL%/favicon.ico" />
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<meta name="theme-color" content="#000000" />
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<meta
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name="description"
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content="Web site created using create-react-app"
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/>
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<link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
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<!--
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manifest.json provides metadata used when your web app is installed on a
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user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
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-->
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<link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
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<!--
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Notice the use of %PUBLIC_URL% in the tags above.
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It will be replaced with the URL of the `public` folder during the build.
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Only files inside the `public` folder can be referenced from the HTML.
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Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
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work correctly both with client-side routing and a non-root public URL.
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Learn how to configure a non-root public URL by running `npm run build`.
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-->
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<title>React App</title>
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</head>
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<body>
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<noscript>You need to enable JavaScript to run this app.</noscript>
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<div id="root"></div>
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<!--
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This HTML file is a template.
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If you open it directly in the browser, you will see an empty page.
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You can add webfonts, meta tags, or analytics to this file.
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The build step will place the bundled scripts into the <body> tag.
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To begin the development, run `npm start` or `yarn start`.
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To create a production bundle, use `npm run build` or `yarn build`.
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-->
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</body>
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</html>

‎webcam_demo/public/logo192.png

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‎webcam_demo/public/logo512.png

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‎webcam_demo/public/manifest.json

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{
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"short_name": "React App",
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"name": "Create React App Sample",
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"icons": [
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{
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"src": "favicon.ico",
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"sizes": "64x64 32x32 24x24 16x16",
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"type": "image/x-icon"
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},
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{
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"src": "logo192.png",
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"type": "image/png",
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"sizes": "192x192"
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},
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{
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"src": "logo512.png",
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"type": "image/png",
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"sizes": "512x512"
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}
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],
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"start_url": ".",
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"display": "standalone",
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"theme_color": "#000000",
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"background_color": "#ffffff"
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}

‎webcam_demo/public/robots.txt

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# https://www.robotstxt.org/robotstxt.html
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User-agent: *
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Disallow:

‎webcam_demo/src/App.css

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.App {
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text-align: center;
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}
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.App-logo {
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height: 40vmin;
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pointer-events: none;
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}
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@media (prefers-reduced-motion: no-preference) {
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.App-logo {
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animation: App-logo-spin infinite 20s linear;
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}
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}
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.App-header {
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background-color: #282c34;
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min-height: 100vh;
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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font-size: calc(10px + 2vmin);
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color: white;
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}
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.App-link {
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color: #61dafb;
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}
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@keyframes App-logo-spin {
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from {
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transform: rotate(0deg);
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}
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to {
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transform: rotate(360deg);
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}
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}

‎webcam_demo/src/App.js

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import { useRef } from 'react'
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import { CompreFace } from 'compreface-javascript-sdk';
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import './App.css';
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function App() {
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const videoTag = useRef(null);
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const canvas1 = useRef(null);
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const canvas2 = useRef(null);
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const canvas3 = useRef(null);
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const drawFace = (canvasElement, faceData, extraCanvas) => {
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const evt = new Event("next_frame", {"bubbles":true, "cancelable":false});
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document.dispatchEvent(evt);
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let box = faceData.result[0].box;
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canvasElement.clearRect(0, 0, 640, 480);
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extraCanvas.clearRect(0, 0, 640, 480);
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canvasElement.strokeStyle = 'green';
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extraCanvas.strokeStyle = "blue";
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extraCanvas.fillStyle = "white"
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extraCanvas.lineWidth = 5;
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canvasElement.lineWidth = 5;
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canvasElement.strokeRect(box.x_min, box.y_min, box.x_max - box.x_min, box.y_max - box.y_min);
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extraCanvas.fillText( Number.parseFloat(box.probability).toPrecision(5) + ' ' + faceData.result[0].gender + ' ' + faceData.result[0].age[0] + '-' + faceData.result[0].age[1], box.x_min, box.y_min - 10)
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}
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const handleVideoStart = () => {
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navigator.mediaDevices.getUserMedia({ video: true})
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.then(stream => videoTag.current.srcObject = stream)
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.catch( error => console.error(error) )
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videoTag.current.addEventListener('play', () => {
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// CompreFace init
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let server = "http://localhost";
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let port = 8000;
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let detection_key = "059b56a9-416c-4c46-b162-f049952f0380";
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let core = new CompreFace(server, port);
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let detection_service = core.initFaceDetectionService(detection_key);
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// end of CompreFace init
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let ctx1 = canvas1.current.getContext('2d');
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let ctx2 = canvas2.current.getContext('2d');
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let ctx3 = canvas3.current.getContext("2d");
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document.addEventListener('next_frame', () => {
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ctx1.drawImage(videoTag.current, 0, 0, 640, 480)
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canvas1.current.toBlob( blob => {
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detection_service.detect(blob, { limit: 1, face_plugins: 'age,gender' })
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.then(res => {
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drawFace(ctx2, res, ctx3)
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})
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.catch(error => console.log(error))
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}, 'image/jpeg', 0.95)
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})
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const evt = new Event("next_frame", {"bubbles":true, "cancelable":false});
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document.dispatchEvent(evt);
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})
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}
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return (
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<div className="App">
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<header className="App-header">
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<video ref={videoTag} width="640" height="480" autoPlay muted ></video>
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<canvas ref={canvas1} width="640" id="canvas" height="480" style={{ display: 'none' }}></canvas>
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<canvas ref={canvas2} width="640" id="canvas2" height="480" style={{ position: 'absolute' }} ></canvas>
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<canvas ref={canvas3} width="640" height="480" style={{ position: 'absolute' }}></canvas>
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<div>
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<button onClick={handleVideoStart} >Start video</button>
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</div>
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</header>
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</div>
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);
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}
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export default App;

‎webcam_demo/src/App.test.js

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import { render, screen } from '@testing-library/react';
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import App from './App';
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test('renders learn react link', () => {
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render(<App />);
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const linkElement = screen.getByText(/learn react/i);
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expect(linkElement).toBeInTheDocument();
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});

‎webcam_demo/src/index.css

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body {
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margin: 0;
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
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'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
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sans-serif;
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-webkit-font-smoothing: antialiased;
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-moz-osx-font-smoothing: grayscale;
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}
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code {
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font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
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monospace;
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}

‎webcam_demo/src/index.js

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import React from 'react';
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import ReactDOM from 'react-dom';
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import './index.css';
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import App from './App';
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import reportWebVitals from './reportWebVitals';
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ReactDOM.render(
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<React.StrictMode>
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<App />
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</React.StrictMode>,
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document.getElementById('root')
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);
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// If you want to start measuring performance in your app, pass a function
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// to log results (for example: reportWebVitals(console.log))
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// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
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reportWebVitals();

‎webcam_demo/src/logo.svg

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‎webcam_demo/src/reportWebVitals.js

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const reportWebVitals = onPerfEntry => {
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if (onPerfEntry && onPerfEntry instanceof Function) {
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import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
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getCLS(onPerfEntry);
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getFID(onPerfEntry);
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getFCP(onPerfEntry);
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getLCP(onPerfEntry);
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getTTFB(onPerfEntry);
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});
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}
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};
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export default reportWebVitals;

‎webcam_demo/src/setupTests.js

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// jest-dom adds custom jest matchers for asserting on DOM nodes.
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// allows you to do things like:
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// expect(element).toHaveTextContent(/react/i)
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// learn more: https://github.com/testing-library/jest-dom
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import '@testing-library/jest-dom';

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