Joachim Hummel
9145872ef1
Problem: RuntimeError beim Zugriff auf session in Generator-Funktionen Lösung: - Liniendaten werden vor dem Generator aus der Session gelesen - Als Parameter an detect_objects_from_webcam() übergeben - Als Parameter an detect_objects_from_video() übergeben - Reset-Button lädt jetzt die Seite neu (mit Bestätigungsdialog) Technische Details: - Generator-Funktionen haben keinen Request-Kontext - Session-Werte müssen vor Generator-Start erfasst werden - Counter-Reset funktioniert durch Seiten-Reload 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
223 lines
7.4 KiB
HTML
223 lines
7.4 KiB
HTML
<!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 name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Webcam Feed</title>
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<style>
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body {
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display: flex;
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flex-direction: column;
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justify-content: center;
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align-items: center;
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min-height: 100vh;
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margin: 0;
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background-color: #f0f0f0;
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padding: 20px;
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}
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.video-container {
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position: relative;
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width: 1020px;
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height: 600px;
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}
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#videoFeed {
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width: 1020px;
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height: 600px;
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border: 2px solid #ccc;
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border-radius: 8px;
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box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
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display: block;
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}
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#lineCanvas {
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position: absolute;
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top: 0;
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left: 0;
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width: 1020px;
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height: 600px;
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cursor: crosshair;
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pointer-events: none;
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}
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#lineCanvas.active {
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pointer-events: auto;
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}
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.controls {
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margin-top: 20px;
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display: flex;
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gap: 10px;
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flex-wrap: wrap;
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justify-content: center;
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}
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button {
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padding: 10px 20px;
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font-size: 16px;
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border: none;
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border-radius: 5px;
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cursor: pointer;
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background-color: #007bff;
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color: white;
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transition: background-color 0.3s;
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}
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button:hover {
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background-color: #0056b3;
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}
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button.active {
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background-color: #28a745;
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}
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button.danger {
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background-color: #dc3545;
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}
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button.danger:hover {
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background-color: #c82333;
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}
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a {
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margin-top: 20px;
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text-decoration: none;
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color: #007bff;
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font-size: 18px;
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}
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a:hover {
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text-decoration: underline;
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}
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.info {
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margin-top: 10px;
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color: #555;
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font-size: 14px;
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}
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</style>
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</head>
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<body>
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<h1>Webcam Object Detection</h1>
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<div class="video-container">
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<img id="videoFeed" src="{{ url_for('webcam_feed') }}" />
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<canvas id="lineCanvas"></canvas>
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</div>
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<div class="controls">
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<button id="setLineBtn">Zähllinie setzen</button>
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<button id="resetCountBtn" class="danger">Zähler zurücksetzen</button>
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</div>
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<div class="info" id="infoText">Klicke auf "Zähllinie setzen" und dann zweimal auf das Video, um die Zähllinie zu definieren.</div>
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<a href="/">Back to Home</a>
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<script>
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const canvas = document.getElementById('lineCanvas');
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const ctx = canvas.getContext('2d');
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const setLineBtn = document.getElementById('setLineBtn');
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const resetCountBtn = document.getElementById('resetCountBtn');
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const infoText = document.getElementById('infoText');
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let isSettingLine = false;
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let firstPoint = null;
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let currentLine = null;
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// Load existing line from server
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fetch('/api/get_line')
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.then(res => res.json())
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.then(data => {
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currentLine = data;
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drawLine();
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});
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setLineBtn.addEventListener('click', () => {
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isSettingLine = !isSettingLine;
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if (isSettingLine) {
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setLineBtn.textContent = 'Abbrechen';
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setLineBtn.classList.add('active');
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canvas.classList.add('active');
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firstPoint = null;
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infoText.textContent = 'Klicke auf den Startpunkt der Zähllinie...';
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} else {
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setLineBtn.textContent = 'Zähllinie setzen';
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setLineBtn.classList.remove('active');
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canvas.classList.remove('active');
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firstPoint = null;
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infoText.textContent = 'Klicke auf "Zähllinie setzen" und dann zweimal auf das Video, um die Zähllinie zu definieren.';
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drawLine();
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}
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});
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canvas.addEventListener('click', (e) => {
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if (!isSettingLine) return;
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const rect = canvas.getBoundingClientRect();
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const x = Math.round(e.clientX - rect.left);
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const y = Math.round(e.clientY - rect.top);
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if (!firstPoint) {
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firstPoint = { x, y };
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infoText.textContent = 'Klicke auf den Endpunkt der Zähllinie...';
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drawTemporaryPoint(x, y);
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} else {
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currentLine = { x1: firstPoint.x, y1: firstPoint.y, x2: x, y2: y };
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// Send line to server
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fetch('/api/set_line', {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify(currentLine)
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})
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.then(res => res.json())
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.then(data => {
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console.log('Line set:', data);
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infoText.textContent = 'Zähllinie erfolgreich gesetzt!';
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setTimeout(() => {
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infoText.textContent = 'Klicke auf "Zähllinie setzen" und dann zweimal auf das Video, um die Zähllinie zu definieren.';
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}, 2000);
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});
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isSettingLine = false;
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setLineBtn.textContent = 'Zähllinie setzen';
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setLineBtn.classList.remove('active');
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canvas.classList.remove('active');
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firstPoint = null;
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drawLine();
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}
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});
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resetCountBtn.addEventListener('click', () => {
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if (confirm('Zähler zurücksetzen? Die Seite wird neu geladen.')) {
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fetch('/api/reset_count', {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' }
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})
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.then(res => res.json())
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.then(data => {
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console.log('Count reset:', data);
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// Reload page to reset the video stream and counter
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location.reload();
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});
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}
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});
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function drawLine() {
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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if (currentLine) {
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ctx.strokeStyle = 'rgba(255, 255, 0, 0.8)';
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ctx.lineWidth = 3;
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ctx.setLineDash([10, 10]);
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ctx.beginPath();
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ctx.moveTo(currentLine.x1, currentLine.y1);
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ctx.lineTo(currentLine.x2, currentLine.y2);
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ctx.stroke();
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ctx.setLineDash([]);
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}
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}
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function drawTemporaryPoint(x, y) {
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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drawLine();
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ctx.fillStyle = 'rgba(255, 255, 0, 0.8)';
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ctx.beginPath();
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ctx.arc(x, y, 5, 0, 2 * Math.PI);
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ctx.fill();
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}
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// Redraw line periodically in case it gets cleared
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setInterval(() => {
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if (!isSettingLine && currentLine) {
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drawLine();
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}
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}, 100);
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</script>
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</body>
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</html>
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