Spaces:
Running
Running
| <html lang="vi"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <title>Camera Detection - YOLO</title> | |
| <script src="https://cdn.tailwindcss.com"></script> | |
| <script src="https://cdn.jsdelivr.net/npm/chart.js"></script> | |
| <style> | |
| @keyframes fade-in { | |
| from { opacity: 0; transform: translateY(10px); } | |
| to { opacity: 1; transform: translateY(0); } | |
| } | |
| .animate-fade-in { animation: fade-in 0.5s ease-out; } | |
| .animate-pulse-slow { animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite; } | |
| #outputCanvas { cursor: default; } | |
| #outputCanvas.drawing { cursor: crosshair; } | |
| /* Dark mode styles */ | |
| @media (prefers-color-scheme: dark) { | |
| body { background-color: #0f172a; } | |
| } | |
| </style> | |
| <script> | |
| tailwind.config = { | |
| darkMode: 'class', | |
| theme: { | |
| extend: { | |
| colors: { | |
| 'rix': { | |
| 50: '#eff6ff', | |
| 500: '#3b82f6', | |
| 600: '#2563eb', | |
| 700: '#1d4ed8', | |
| } | |
| } | |
| } | |
| } | |
| } | |
| </script> | |
| </head> | |
| <body class="bg-slate-100 dark:bg-slate-900 min-h-screen p-4 md:p-8"> | |
| <div class="max-w-7xl mx-auto space-y-6 animate-fade-in pb-20"> | |
| <!-- Header --> | |
| <div class="flex flex-col md:flex-row md:items-center justify-between gap-4"> | |
| <h1 class="text-3xl font-bold text-slate-800 dark:text-white border-l-4 border-rix-600 pl-4"> | |
| 📹 Camera Detection | |
| </h1> | |
| </div> | |
| <!-- Main Container --> | |
| <div class="bg-white dark:bg-slate-800 rounded-2xl shadow-lg border border-slate-100 dark:border-slate-700 p-6"> | |
| <div class="grid grid-cols-1 lg:grid-cols-3 gap-6"> | |
| <!-- Camera View Section --> | |
| <div class="lg:col-span-2 flex flex-col items-center space-y-6"> | |
| <!-- Controls --> | |
| <div class="flex flex-wrap items-center justify-center gap-4 bg-slate-50 dark:bg-slate-700/50 p-4 rounded-2xl w-full"> | |
| <!-- Device Selector --> | |
| <div class="flex items-center gap-2"> | |
| <svg class="w-5 h-5 text-slate-500" fill="none" stroke="currentColor" viewBox="0 0 24 24"> | |
| <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10.325 4.317c.426-1.756 2.924-1.756 3.35 0a1.724 1.724 0 002.573 1.066c1.543-.94 3.31.826 2.37 2.37a1.724 1.724 0 001.065 2.572c1.756.426 1.756 2.924 0 3.35a1.724 1.724 0 00-1.066 2.573c.94 1.543-.826 3.31-2.37 2.37a1.724 1.724 0 00-2.572 1.065c-.426 1.756-2.924 1.756-3.35 0a1.724 1.724 0 00-2.573-1.066c-1.543.94-3.31-.826-2.37-2.37a1.724 1.724 0 00-1.065-2.572c-1.756-.426-1.756-2.924 0-3.35a1.724 1.724 0 001.066-2.573c-.94-1.543.826-3.31 2.37-2.37.996.608 2.296.07 2.572-1.065z"></path> | |
| <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"></path> | |
| </svg> | |
| <select id="cameraSelect" class="bg-white dark:bg-slate-600 text-slate-800 dark:text-slate-200 text-sm rounded-md border-none py-2 px-3 focus:ring-2 focus:ring-rix-500"> | |
| <option value="">-- Auto Select --</option> | |
| </select> | |
| </div> | |
| <div class="w-px h-8 bg-slate-300 dark:bg-slate-600 mx-2 hidden sm:block"></div> | |
| <!-- Play/Stop --> | |
| <div class="flex items-center gap-2"> | |
| <button id="startBtn" class="bg-emerald-500 hover:bg-emerald-600 text-white p-2 rounded-full transition-colors shadow-sm"> | |
| <svg class="w-5 h-5" fill="currentColor" viewBox="0 0 24 24"> | |
| <path d="M8 5v14l11-7z"/> | |
| </svg> | |
| </button> | |
| <button id="stopBtn" disabled class="bg-red-500 hover:bg-red-600 text-white p-2 rounded-full transition-colors shadow-sm disabled:opacity-50"> | |
| <svg class="w-5 h-5" fill="currentColor" viewBox="0 0 24 24"> | |
| <path d="M6 4h4v16H6V4zm8 0h4v16h-4V4z"/> | |
| </svg> | |
| </button> | |
| </div> | |
| <div class="w-px h-8 bg-slate-300 dark:bg-slate-600 mx-2 hidden sm:block"></div> | |
| <!-- Draw & Grid Controls --> | |
| <div class="flex items-center gap-2"> | |
| <button id="toggleGridBtn" disabled class="flex items-center gap-2 px-4 py-2 rounded-full text-sm font-bold bg-white dark:bg-slate-600 text-slate-600 dark:text-slate-200 hover:bg-slate-100 dark:hover:bg-slate-500 disabled:opacity-50 transition-all"> | |
| <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"> | |
| <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 5a1 1 0 011-1h4a1 1 0 011 1v7a1 1 0 01-1 1H5a1 1 0 01-1-1V5zM14 5a1 1 0 011-1h4a1 1 0 011 1v7a1 1 0 01-1 1h-4a1 1 0 01-1-1V5zM4 16a1 1 0 011-1h4a1 1 0 011 1v3a1 1 0 01-1 1H5a1 1 0 01-1-1v-3zM14 16a1 1 0 011-1h4a1 1 0 011 1v3a1 1 0 01-1 1h-4a1 1 0 01-1-1v-3z"></path> | |
| </svg> | |
| Show Grid | |
| </button> | |
| <button id="drawLineBtn" disabled class="flex items-center gap-2 px-4 py-2 rounded-full text-sm font-bold bg-white dark:bg-slate-600 text-slate-600 dark:text-slate-200 hover:bg-slate-100 dark:hover:bg-slate-500 disabled:opacity-50 transition-all"> | |
| <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"> | |
| <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15.232 5.232l3.536 3.536m-2.036-5.036a2.5 2.5 0 113.536 3.536L6.5 21.036H3v-3.572L16.732 3.732z"></path> | |
| </svg> | |
| Draw Line | |
| </button> | |
| <button id="clearLineBtn" class="flex items-center gap-2 px-4 py-2 rounded-full text-sm font-bold bg-white dark:bg-slate-600 text-red-500 hover:bg-red-50 dark:hover:bg-slate-500 transition-all border border-transparent hover:border-red-200"> | |
| <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"> | |
| <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16"></path> | |
| </svg> | |
| Clear | |
| </button> | |
| <button id="resetCountBtn" class="flex items-center gap-2 px-4 py-2 rounded-full text-sm font-bold bg-slate-200 hover:bg-slate-300 dark:bg-slate-600 dark:hover:bg-slate-500 text-slate-700 dark:text-white transition-all"> | |
| <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"> | |
| <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 4v5h.582m15.356 2A8.001 8.001 0 004.582 9m0 0H9m11 11v-5h-.581m0 0a8.003 8.003 0 01-15.357-2m15.357 2H15"></path> | |
| </svg> | |
| Reset | |
| </button> | |
| </div> | |
| </div> | |
| <!-- Hint Box --> | |
| <div id="hintText" class="w-full text-center text-sm p-3 bg-blue-50 dark:bg-blue-900/30 text-blue-700 dark:text-blue-300 rounded-lg border border-blue-200 dark:border-blue-800"> | |
| Click "Start Camera" to begin. Then "Show Grid" and "Draw Line" to set counting line. | |
| </div> | |
| <!-- Video Viewport --> | |
| <div class="relative w-full bg-black rounded-lg overflow-hidden shadow-2xl aspect-video group select-none"> | |
| <video id="videoInput" class="hidden" autoplay playsinline muted></video> | |
| <canvas id="outputCanvas" class="w-full h-full object-cover"></canvas> | |
| <!-- Live Indicator --> | |
| <div id="liveIndicator" class="hidden absolute top-4 right-4 flex items-center gap-2 bg-black/60 px-3 py-1 rounded-full backdrop-blur-md pointer-events-none"> | |
| <div class="w-2 h-2 bg-red-500 rounded-full animate-pulse"></div> | |
| <span class="text-white text-xs font-bold tracking-wider">LIVE STREAM</span> | |
| </div> | |
| <!-- Drawing Mode Indicator --> | |
| <div id="drawingIndicator" class="hidden absolute top-4 left-4 bg-amber-500 text-white text-xs font-bold px-3 py-1 rounded-md shadow-lg pointer-events-none animate-pulse"> | |
| Drawing Mode Active | |
| </div> | |
| <!-- Placeholder --> | |
| <div id="cameraPlaceholder" class="absolute inset-0 flex items-center justify-center bg-black/50 text-white/50"> | |
| <svg class="w-16 h-16" fill="none" stroke="currentColor" viewBox="0 0 24 24"> | |
| <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 9a2 2 0 012-2h.93a2 2 0 001.664-.89l.812-1.22A2 2 0 0110.07 4h3.86a2 2 0 011.664.89l.812 1.22A2 2 0 0018.07 7H19a2 2 0 012 2v9a2 2 0 01-2 2H5a2 2 0 01-2-2V9z"></path> | |
| <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 13a3 3 0 11-6 0 3 3 0 016 0z"></path> | |
| </svg> | |
| </div> | |
| </div> | |
| </div> | |
| <!-- Stats Section --> | |
| <div class="lg:col-span-1"> | |
| <h3 class="font-bold text-slate-800 dark:text-white mb-2 flex justify-between items-center"> | |
| <span>Live Session Stats</span> | |
| <span id="statusIndicator" class="text-xs text-slate-400 font-normal">Ready</span> | |
| </h3> | |
| <!-- Counter Card --> | |
| <div class="bg-white dark:bg-slate-700/50 p-4 rounded-xl border border-slate-200 dark:border-slate-600 mb-4 shadow-sm"> | |
| <div class="text-xs text-slate-500 dark:text-slate-400 uppercase font-bold tracking-wider mb-1">Line Cross Count</div> | |
| <div class="text-3xl font-bold text-rix-600 dark:text-white" id="totalCount">0</div> | |
| <div class="mt-2 text-xs text-slate-400" id="lineInfo">No lines drawn</div> | |
| </div> | |
| <!-- FPS Card --> | |
| <div class="bg-white dark:bg-slate-700/50 p-4 rounded-xl border border-slate-200 dark:border-slate-600 mb-4 shadow-sm"> | |
| <div class="text-xs text-slate-500 dark:text-slate-400 uppercase font-bold tracking-wider mb-1">FPS</div> | |
| <div class="text-3xl font-bold text-emerald-600 dark:text-emerald-400" id="fpsValue">0</div> | |
| </div> | |
| <!-- Chart --> | |
| <div class="bg-slate-50 dark:bg-slate-700/50 p-4 rounded-xl border border-slate-200 dark:border-slate-600"> | |
| <h4 class="text-sm font-bold text-slate-700 dark:text-slate-300 mb-4 flex items-center gap-2"> | |
| <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"> | |
| <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 01-2 2h-2a2 2 0 01-2-2z"></path> | |
| </svg> | |
| Count History | |
| </h4> | |
| <div class="h-48 w-full"> | |
| <canvas id="countChart"></canvas> | |
| </div> | |
| </div> | |
| <p class="text-xs text-slate-400 mt-4"> | |
| * Counts are cumulative for the current session. | |
| </p> | |
| </div> | |
| </div> | |
| </div> | |
| </div> | |
| <script> | |
| // Constants | |
| const API_URL = window.location.origin; | |
| // Elements | |
| const video = document.getElementById('videoInput'); | |
| const canvas = document.getElementById('outputCanvas'); | |
| const ctx = canvas.getContext('2d'); | |
| const startBtn = document.getElementById('startBtn'); | |
| const stopBtn = document.getElementById('stopBtn'); | |
| const drawLineBtn = document.getElementById('drawLineBtn'); | |
| const toggleGridBtn = document.getElementById('toggleGridBtn'); | |
| const resetCountBtn = document.getElementById('resetCountBtn'); | |
| const clearLineBtn = document.getElementById('clearLineBtn'); | |
| const cameraSelect = document.getElementById('cameraSelect'); | |
| const hintText = document.getElementById('hintText'); | |
| const liveIndicator = document.getElementById('liveIndicator'); | |
| const drawingIndicator = document.getElementById('drawingIndicator'); | |
| const cameraPlaceholder = document.getElementById('cameraPlaceholder'); | |
| const statusIndicator = document.getElementById('statusIndicator'); | |
| const lineInfo = document.getElementById('lineInfo'); | |
| // State | |
| let ws = null; | |
| let stream = null; | |
| let animationId = null; | |
| let isDrawingMode = false; | |
| let showGrid = false; | |
| let linePoints = []; | |
| let tempLine = null; | |
| let currentLine = null; | |
| let devices = []; | |
| // Chart setup | |
| const countChart = new Chart(document.getElementById('countChart'), { | |
| type: 'line', | |
| data: { | |
| labels: [], | |
| datasets: [{ | |
| label: 'Count', | |
| data: [], | |
| borderColor: '#3b82f6', | |
| backgroundColor: 'rgba(59, 130, 246, 0.1)', | |
| tension: 0.4, | |
| fill: true, | |
| pointRadius: 3, | |
| pointHoverRadius: 5 | |
| }] | |
| }, | |
| options: { | |
| responsive: true, | |
| maintainAspectRatio: false, | |
| plugins: { | |
| legend: { display: false } | |
| }, | |
| scales: { | |
| y: { | |
| beginAtZero: true, | |
| ticks: { color: '#94a3b8' }, | |
| grid: { color: 'rgba(148, 163, 184, 0.1)' } | |
| }, | |
| x: { | |
| ticks: { color: '#94a3b8', maxRotation: 0 }, | |
| grid: { display: false } | |
| } | |
| } | |
| } | |
| }); | |
| // Get available cameras | |
| async function getCameras() { | |
| try { | |
| await navigator.mediaDevices.getUserMedia({ video: true }); | |
| const allDevices = await navigator.mediaDevices.enumerateDevices(); | |
| devices = allDevices.filter(device => device.kind === 'videoinput'); | |
| cameraSelect.innerHTML = '<option value="">-- Auto Select --</option>'; | |
| devices.forEach((device, idx) => { | |
| const option = document.createElement('option'); | |
| option.value = device.deviceId; | |
| let label = device.label || `Camera ${idx + 1}`; | |
| if (label.toLowerCase().includes('back') || label.toLowerCase().includes('rear')) { | |
| label += ' 📷'; | |
| } else if (label.toLowerCase().includes('front')) { | |
| label += ' 🤳'; | |
| } | |
| option.text = label; | |
| cameraSelect.appendChild(option); | |
| }); | |
| } catch (err) { | |
| console.error('Error accessing cameras:', err); | |
| alert('Cannot access cameras. Please check permissions.'); | |
| } | |
| } | |
| // Draw overlays (grid + lines) | |
| function drawOverlays() { | |
| // Draw grid | |
| if (showGrid) { | |
| const w = canvas.width; | |
| const h = canvas.height; | |
| ctx.strokeStyle = 'rgba(255, 255, 255, 0.3)'; | |
| ctx.lineWidth = 1; | |
| ctx.setLineDash([5, 5]); | |
| for (let i = 1; i <= 2; i++) { | |
| ctx.beginPath(); | |
| ctx.moveTo(w * i / 3, 0); | |
| ctx.lineTo(w * i / 3, h); | |
| ctx.stroke(); | |
| ctx.beginPath(); | |
| ctx.moveTo(0, h * i / 3); | |
| ctx.lineTo(w, h * i / 3); | |
| ctx.stroke(); | |
| } | |
| ctx.strokeStyle = 'rgba(0, 255, 0, 0.4)'; | |
| ctx.lineWidth = 2; | |
| ctx.beginPath(); | |
| ctx.moveTo(w / 2, 0); | |
| ctx.lineTo(w / 2, h); | |
| ctx.stroke(); | |
| ctx.beginPath(); | |
| ctx.moveTo(0, h / 2); | |
| ctx.lineTo(w, h / 2); | |
| ctx.stroke(); | |
| ctx.setLineDash([]); | |
| } | |
| // Draw current line | |
| if (currentLine) { | |
| const w = canvas.width; | |
| const h = canvas.height; | |
| const x1 = currentLine[0] * w; | |
| const y1 = currentLine[1] * h; | |
| const x2 = currentLine[2] * w; | |
| const y2 = currentLine[3] * h; | |
| ctx.strokeStyle = '#00FF00'; | |
| ctx.lineWidth = 5; | |
| ctx.setLineDash([]); | |
| ctx.shadowColor = '#00FF00'; | |
| ctx.shadowBlur = 10; | |
| ctx.beginPath(); | |
| ctx.moveTo(x1, y1); | |
| ctx.lineTo(x2, y2); | |
| ctx.stroke(); | |
| ctx.shadowBlur = 0; | |
| ctx.fillStyle = '#00FF00'; | |
| ctx.strokeStyle = '#FFFFFF'; | |
| ctx.lineWidth = 2; | |
| [{ x: x1, y: y1 }, { x: x2, y: y2 }].forEach(point => { | |
| ctx.beginPath(); | |
| ctx.arc(point.x, point.y, 10, 0, 2 * Math.PI); | |
| ctx.fill(); | |
| ctx.stroke(); | |
| }); | |
| ctx.font = 'bold 18px Arial'; | |
| const labelText = '⚡ COUNT LINE'; | |
| const labelX = (x1 + x2) / 2; | |
| const labelY = (y1 + y2) / 2 - 15; | |
| const textWidth = ctx.measureText(labelText).width; | |
| ctx.fillStyle = 'rgba(0, 255, 0, 0.8)'; | |
| ctx.fillRect(labelX - textWidth/2 - 10, labelY - 25, textWidth + 20, 35); | |
| ctx.fillStyle = '#000000'; | |
| ctx.fillText(labelText, labelX - textWidth/2, labelY); | |
| } | |
| // Draw temp line | |
| if (isDrawingMode && tempLine) { | |
| ctx.strokeStyle = '#FF0000'; | |
| ctx.lineWidth = 3; | |
| ctx.setLineDash([10, 5]); | |
| ctx.beginPath(); | |
| ctx.moveTo(tempLine.x1, tempLine.y1); | |
| ctx.lineTo(tempLine.x2, tempLine.y2); | |
| ctx.stroke(); | |
| ctx.setLineDash([]); | |
| ctx.fillStyle = '#FF0000'; | |
| ctx.strokeStyle = '#FFFFFF'; | |
| ctx.lineWidth = 2; | |
| [{ x: tempLine.x1, y: tempLine.y1 }, { x: tempLine.x2, y: tempLine.y2 }].forEach(point => { | |
| ctx.beginPath(); | |
| ctx.arc(point.x, point.y, 8, 0, 2 * Math.PI); | |
| ctx.fill(); | |
| ctx.stroke(); | |
| }); | |
| } | |
| } | |
| // WebSocket connection | |
| function connectWebSocket() { | |
| const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:'; | |
| ws = new WebSocket(`${protocol}//${window.location.host}/video_feed`); | |
| ws.onopen = () => { | |
| console.log('WebSocket connected'); | |
| statusIndicator.textContent = 'Live'; | |
| statusIndicator.className = 'text-xs text-emerald-500 animate-pulse font-normal'; | |
| }; | |
| ws.onmessage = (event) => { | |
| const msg = JSON.parse(event.data); | |
| if (msg.type === 'frame') { | |
| const img = new Image(); | |
| img.onload = () => { | |
| canvas.width = img.width; | |
| canvas.height = img.height; | |
| ctx.drawImage(img, 0, 0); | |
| drawOverlays(); | |
| }; | |
| img.src = msg.data; | |
| } | |
| }; | |
| ws.onerror = (error) => { | |
| console.error('WebSocket error:', error); | |
| statusIndicator.textContent = 'Error'; | |
| statusIndicator.className = 'text-xs text-red-500 font-normal'; | |
| }; | |
| ws.onclose = () => { | |
| console.log('WebSocket closed'); | |
| statusIndicator.textContent = 'Ready'; | |
| statusIndicator.className = 'text-xs text-slate-400 font-normal'; | |
| }; | |
| } | |
| // Start camera | |
| async function startCamera() { | |
| const deviceId = cameraSelect.value; | |
| try { | |
| const constraints = { | |
| video: { | |
| width: { ideal: 1280 }, | |
| height: { ideal: 720 }, | |
| facingMode: deviceId ? undefined : 'environment', | |
| deviceId: deviceId ? { exact: deviceId } : undefined | |
| } | |
| }; | |
| stream = await navigator.mediaDevices.getUserMedia(constraints); | |
| video.srcObject = stream; | |
| await video.play(); | |
| canvas.width = video.videoWidth; | |
| canvas.height = video.videoHeight; | |
| cameraPlaceholder.classList.add('hidden'); | |
| liveIndicator.classList.remove('hidden'); | |
| connectWebSocket(); | |
| sendFrames(); | |
| startBtn.disabled = true; | |
| stopBtn.disabled = false; | |
| drawLineBtn.disabled = false; | |
| toggleGridBtn.disabled = false; | |
| cameraSelect.disabled = true; | |
| hintText.textContent = 'Click "Show Grid" for reference, then "Draw Line" to set counting line.'; | |
| hintText.className = 'w-full text-center text-sm p-3 bg-emerald-50 dark:bg-emerald-900/30 text-emerald-700 dark:text-emerald-300 rounded-lg border border-emerald-200 dark:border-emerald-800'; | |
| } catch (err) { | |
| console.error('Camera error:', err); | |
| alert('Cannot access camera. Please check permissions.'); | |
| } | |
| } | |
| // Send frames to server | |
| function sendFrames() { | |
| if (!ws || ws.readyState !== WebSocket.OPEN) { | |
| animationId = requestAnimationFrame(sendFrames); | |
| return; | |
| } | |
| if (!isDrawingMode) { | |
| ctx.drawImage(video, 0, 0, canvas.width, canvas.height); | |
| const frameData = canvas.toDataURL('image/jpeg', 0.8); | |
| ws.send(JSON.stringify({ | |
| type: 'frame', | |
| data: frameData | |
| })); | |
| } | |
| animationId = requestAnimationFrame(sendFrames); | |
| } | |
| // Stop camera | |
| function stopCamera() { | |
| if (stream) { | |
| stream.getTracks().forEach(track => track.stop()); | |
| stream = null; | |
| } | |
| if (ws) { | |
| ws.close(); | |
| ws = null; | |
| } | |
| if (animationId) { | |
| cancelAnimationFrame(animationId); | |
| animationId = null; | |
| } | |
| ctx.clearRect(0, 0, canvas.width, canvas.height); | |
| cameraPlaceholder.classList.remove('hidden'); | |
| liveIndicator.classList.add('hidden'); | |
| startBtn.disabled = false; | |
| stopBtn.disabled = true; | |
| drawLineBtn.disabled = true; | |
| toggleGridBtn.disabled = true; | |
| cameraSelect.disabled = false; | |
| statusIndicator.textContent = 'Ready'; | |
| statusIndicator.className = 'text-xs text-slate-400 font-normal'; | |
| hintText.textContent = 'Click "Start Camera" to begin.'; | |
| hintText.className = 'w-full text-center text-sm p-3 bg-blue-50 dark:bg-blue-900/30 text-blue-700 dark:text-blue-300 rounded-lg border border-blue-200 dark:border-blue-800'; | |
| showGrid = false; | |
| currentLine = null; | |
| lineInfo.textContent = 'No lines drawn'; | |
| } | |
| // Toggle grid | |
| function toggleGrid() { | |
| showGrid = !showGrid; | |
| if (showGrid) { | |
| toggleGridBtn.innerHTML = ` | |
| <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"> | |
| <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"></path> | |
| </svg> | |
| Hide Grid | |
| `; | |
| toggleGridBtn.className = 'flex items-center gap-2 px-4 py-2 rounded-full text-sm font-bold bg-emerald-500 text-white shadow-md transition-all'; | |
| hintText.textContent = '✅ Grid enabled! Use as reference for accurate line placement.'; | |
| } else { | |
| toggleGridBtn.innerHTML = ` | |
| <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"> | |
| <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 5a1 1 0 011-1h4a1 1 0 011 1v7a1 1 0 01-1 1H5a1 1 0 01-1-1V5zM14 5a11 1 0 011-1h4a1 1 0 011 1v7a1 1 0 01-1 1h-4a1 1 0 01-1-1V5zM4 16a1 1 0 011-1h4a1 1 0 011 1v3a1 1 0 01-1 1H5a1 1 0 01-1-1v-3zM14 16a1 1 0 011-1h4a1 1 0 011 1v3a1 1 0 01-1 1h-4a1 1 0 01-1-1v-3z"></path> | |
| </svg> | |
| Show Grid | |
| `; | |
| toggleGridBtn.className = 'flex items-center gap-2 px-4 py-2 rounded-full text-sm font-bold bg-white dark:bg-slate-600 text-slate-600 dark:text-slate-200 hover:bg-slate-100 dark:hover:bg-slate-500 transition-all'; | |
| hintText.textContent = 'Click "Draw Line" to set counting line.'; | |
| } | |
| } | |
| // Toggle draw line mode | |
| function toggleDrawLine() { | |
| isDrawingMode = !isDrawingMode; | |
| if (isDrawingMode) { | |
| canvas.classList.add('drawing'); | |
| drawLineBtn.innerHTML = ` | |
| <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"> | |
| <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"></path> | |
| </svg> | |
| Cancel | |
| `; | |
| drawLineBtn.className = 'flex items-center gap-2 px-4 py-2 rounded-full text-sm font-bold bg-amber-500 text-white shadow-md animate-pulse transition-all'; | |
| drawingIndicator.classList.remove('hidden'); | |
| hintText.textContent = '📍 Click 2 points on video to draw counting line. Use grid as reference.'; | |
| hintText.className = 'w-full text-center text-sm p-3 bg-amber-50 dark:bg-amber-900/30 text-amber-700 dark:text-amber-300 rounded-lg border border-amber-200 dark:border-amber-800'; | |
| linePoints = []; | |
| tempLine = null; | |
| } else { | |
| canvas.classList.remove('drawing'); | |
| drawLineBtn.innerHTML = ` | |
| <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"> | |
| <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15.232 5.232l3.536 3.536m-2.036-5.036a2.5 2.5 0 113.536 3.536L6.5 21.036H3v-3.572L16.732 3.732z"></path> | |
| </svg> | |
| Draw Line | |
| `; | |
| drawLineBtn.className = 'flex items-center gap-2 px-4 py-2 rounded-full text-sm font-bold bg-white dark:bg-slate-600 text-slate-600 dark:text-slate-200 hover:bg-slate-100 dark:hover:bg-slate-500 transition-all'; | |
| drawingIndicator.classList.add('hidden'); | |
| hintText.textContent = 'Click "Draw Line" to set a new counting line.'; | |
| hintText.className = 'w-full text-center text-sm p-3 bg-blue-50 dark:bg-blue-900/30 text-blue-700 dark:text-blue-300 rounded-lg border border-blue-200 dark:border-blue-800'; | |
| linePoints = []; | |
| tempLine = null; | |
| } | |
| } | |
| // Canvas click handler | |
| canvas.addEventListener('click', (e) => { | |
| if (!isDrawingMode) return; | |
| const rect = canvas.getBoundingClientRect(); | |
| const scaleX = canvas.width / rect.width; | |
| const scaleY = canvas.height / rect.height; | |
| const x = (e.clientX - rect.left) * scaleX; | |
| const y = (e.clientY - rect.top) * scaleY; | |
| linePoints.push({ x, y }); | |
| if (linePoints.length === 1) { | |
| hintText.textContent = '📍 Click second point to complete counting line.'; | |
| tempLine = { x1: x, y1: y, x2: x, y2: y }; | |
| } | |
| if (linePoints.length === 2) { | |
| const line = [ | |
| linePoints[0].x / canvas.width, | |
| linePoints[0].y / canvas.height, | |
| linePoints[1].x / canvas.width, | |
| linePoints[1].y / canvas.height | |
| ]; | |
| currentLine = line; | |
| lineInfo.textContent = '1 line drawn'; | |
| if (ws && ws.readyState === WebSocket.OPEN) { | |
| ws.send(JSON.stringify({ | |
| type: 'set_line', | |
| line: line | |
| })); | |
| } | |
| console.log('Line created:', line); | |
| isDrawingMode = false; | |
| canvas.classList.remove('drawing'); | |
| drawLineBtn.innerHTML = ` | |
| <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"> | |
| <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15.232 5.232l3.536 3.536m-2.036-5.036a2.5 2.5 0 113.536 3.536L6.5 21.036H3v-3.572L16.732 3.732z"></path> | |
| </svg> | |
| Draw Line | |
| `; | |
| drawLineBtn.className = 'flex items-center gap-2 px-4 py-2 rounded-full text-sm font-bold bg-white dark:bg-slate-600 text-slate-600 dark:text-slate-200 hover:bg-slate-100 dark:hover:bg-slate-500 transition-all'; | |
| drawingIndicator.classList.add('hidden'); | |
| hintText.textContent = '✅ Counting line created! Objects crossing this line will be counted.'; | |
| hintText.className = 'w-full text-center text-sm p-3 bg-emerald-50 dark:bg-emerald-900/30 text-emerald-700 dark:text-emerald-300 rounded-lg border border-emerald-200 dark:border-emerald-800'; | |
| linePoints = []; | |
| tempLine = null; | |
| } | |
| }); | |
| // Canvas mousemove handler | |
| canvas.addEventListener('mousemove', (e) => { | |
| if (!isDrawingMode || linePoints.length !== 1) return; | |
| const rect = canvas.getBoundingClientRect(); | |
| const scaleX = canvas.width / rect.width; | |
| const scaleY = canvas.height / rect.height; | |
| const x = (e.clientX - rect.left) * scaleX; | |
| const y = (e.clientY - rect.top) * scaleY; | |
| tempLine = { | |
| x1: linePoints[0].x, | |
| y1: linePoints[0].y, | |
| x2: x, | |
| y2: y | |
| }; | |
| }); | |
| // Touch support | |
| canvas.addEventListener('touchstart', (e) => { | |
| e.preventDefault(); | |
| const touch = e.touches[0]; | |
| const mouseEvent = new MouseEvent('click', { | |
| clientX: touch.clientX, | |
| clientY: touch.clientY | |
| }); | |
| canvas.dispatchEvent(mouseEvent); | |
| }); | |
| canvas.addEventListener('touchmove', (e) => { | |
| e.preventDefault(); | |
| const touch = e.touches[0]; | |
| const mouseEvent = new MouseEvent('mousemove', { | |
| clientX: touch.clientX, | |
| clientY: touch.clientY | |
| }); | |
| canvas.dispatchEvent(mouseEvent); | |
| }); | |
| // Clear line | |
| async function clearLine() { | |
| if (!currentLine && !confirm('No line to clear. Reset count anyway?')) return; | |
| currentLine = null; | |
| lineInfo.textContent = 'No lines drawn'; | |
| if (ws && ws.readyState === WebSocket.OPEN) { | |
| ws.send(JSON.stringify({ | |
| type: 'set_line', | |
| line: [] | |
| })); | |
| } | |
| hintText.textContent = 'Line cleared. Click "Draw Line" to set a new counting line.'; | |
| hintText.className = 'w-full text-center text-sm p-3 bg-blue-50 dark:bg-blue-900/30 text-blue-700 dark:text-blue-300 rounded-lg border border-blue-200 dark:border-blue-800'; | |
| } | |
| // Reset count | |
| async function resetCount() { | |
| if (confirm('Reset count to 0?')) { | |
| try { | |
| await fetch('/count', { method: 'DELETE' }); | |
| document.getElementById('totalCount').textContent = '0'; | |
| // Clear chart | |
| countChart.data.labels = []; | |
| countChart.data.datasets[0].data = []; | |
| countChart.update(); | |
| hintText.textContent = '✅ Count reset to 0!'; | |
| hintText.className = 'w-full text-center text-sm p-3 bg-emerald-50 dark:bg-emerald-900/30 text-emerald-700 dark:text-emerald-300 rounded-lg border border-emerald-200 dark:border-emerald-800'; | |
| setTimeout(() => { | |
| hintText.textContent = 'Objects crossing the line will be counted.'; | |
| hintText.className = 'w-full text-center text-sm p-3 bg-blue-50 dark:bg-blue-900/30 text-blue-700 dark:text-blue-300 rounded-lg border border-blue-200 dark:border-blue-800'; | |
| }, 3000); | |
| } catch (error) { | |
| console.error('Error resetting count:', error); | |
| alert('Failed to reset count. Please try again.'); | |
| } | |
| } | |
| } | |
| // Update chart with new count | |
| function updateChart(count) { | |
| const now = new Date(); | |
| const timeLabel = `${String(now.getHours()).padStart(2, '0')}:${String(now.getMinutes()).padStart(2, '0')}:${String(now.getSeconds()).padStart(2, '0')}`; | |
| countChart.data.labels.push(timeLabel); | |
| countChart.data.datasets[0].data.push(count); | |
| // Keep only last 20 data points | |
| if (countChart.data.labels.length > 20) { | |
| countChart.data.labels.shift(); | |
| countChart.data.datasets[0].data.shift(); | |
| } | |
| countChart.update('none'); // Update without animation for smoother performance | |
| } | |
| // Update stats | |
| async function updateStats() { | |
| try { | |
| const response = await fetch('/count'); | |
| const data = await response.json(); | |
| document.getElementById('totalCount').textContent = data.total || 0; | |
| document.getElementById('fpsValue').textContent = data.fps || 0; | |
| if (data.total !== undefined) { | |
| updateChart(data.total); | |
| } | |
| } catch (error) { | |
| console.error('Error fetching stats:', error); | |
| } | |
| } | |
| // Event listeners | |
| startBtn.addEventListener('click', startCamera); | |
| stopBtn.addEventListener('click', stopCamera); | |
| drawLineBtn.addEventListener('click', toggleDrawLine); | |
| toggleGridBtn.addEventListener('click', toggleGrid); | |
| resetCountBtn.addEventListener('click', resetCount); | |
| clearLineBtn.addEventListener('click', clearLine); | |
| // Initialize | |
| getCameras(); | |
| // Update stats every second | |
| setInterval(updateStats, 1000); | |
| // Dark mode detection | |
| if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) { | |
| document.documentElement.classList.add('dark'); | |
| } | |
| </script> | |
| </body> | |
| </html> | |