From 97f1ff99dfc10497389a3cf81d8fce6bc1631ac0 Mon Sep 17 00:00:00 2001
From: Mika <kontakt@donau2space.de>
Date: Thu, 5 Mar 2026 15:48:00 +0000
Subject: [PATCH] Add visualization_tool/js/charts.js

---
 visualization_tool/js/charts.js | 77 +++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 visualization_tool/js/charts.js

diff --git a/visualization_tool/js/charts.js b/visualization_tool/js/charts.js
new file mode 100644
index 0000000..a48f64d
--- /dev/null
+++ b/visualization_tool/js/charts.js
@@ -0,0 +1,77 @@
+/**
+ * @module charts
+ * @description Verarbeitet Analyseergebnisse zu grafischen Darstellungen der Δt‑Verteilung.
+ * Enthält Funktionen zur Darstellung der Resultate in einem Canvas im Element #chart-panel.
+ */
+
+/**
+ * Rendert ein einfaches Balkendiagramm der Δt‑Werte innerhalb #chart-panel.
+ * @param {Array<{run_id: string, category: string, delta_t: number, timestamp: string, status: string}>} results - Analyseergebnisse
+ */
+export function renderChart(results) {
+  const panel = document.getElementById('chart-panel');
+  if (!panel) return;
+
+  // Vorherige Inhalte leeren
+  panel.innerHTML = '';
+
+  // Canvas erzeugen
+  const canvas = document.createElement('canvas');
+  canvas.setAttribute('aria-label', 'Δt‑Verteilung Diagramm');
+  canvas.setAttribute('role', 'img');
+  panel.appendChild(canvas);
+
+  const ctx = canvas.getContext('2d');
+
+  // Daten vorbereiten: Zonen definieren und zählen
+  const bins = [
+    { label: '< -2', min: -Infinity, max: -2 },
+    { label: '-2 bis -1', min: -2, max: -1 },
+    { label: '-1 bis 0', min: -1, max: 0 },
+    { label: '0 bis 1', min: 0, max: 1 },
+    { label: '> 1', min: 1, max: Infinity }
+  ];
+
+  const binCounts = bins.map(({ min, max }) =>
+    results.filter(r => r.delta_t >= min && r.delta_t < max).length
+  );
+
+  const maxCount = Math.max(...binCounts, 1);
+
+  const width = canvas.width = panel.clientWidth || 400;
+  const height = canvas.height = 300;
+  const barWidth = width / bins.length - 10;
+
+  ctx.clearRect(0, 0, width, height);
+  ctx.font = '14px sans-serif';
+  ctx.textAlign = 'center';
+  ctx.textBaseline = 'top';
+
+  bins.forEach((bin, i) => {
+    const x = i * (barWidth + 10) + 10;
+    const y = height - (binCounts[i] / maxCount) * (height - 50);
+    const barHeight = (binCounts[i] / maxCount) * (height - 50);
+
+    // Farbkennzeichnung: Δt < 0 Fälle hervorheben
+    const isCritical = bin.max <= 0;
+    ctx.fillStyle = isCritical ? 'hsl(0, 70%, 50%)' : 'hsl(210, 50%, 50%)';
+
+    ctx.fillRect(x, y, barWidth, barHeight);
+    ctx.fillStyle = '#000';
+    ctx.fillText(bin.label, x + barWidth / 2, height - 20);
+  });
+
+  // Achsen zeichnen
+  ctx.strokeStyle = '#333';
+  ctx.lineWidth = 1;
+  ctx.beginPath();
+  ctx.moveTo(0, height - 30);
+  ctx.lineTo(width, height - 30);
+  ctx.stroke();
+
+  // Optional: Legende zeichnen
+  ctx.fillStyle = '#000';
+  ctx.textAlign = 'left';
+  ctx.fillText('Δt < 0 (kritisch): Rot', 10, 10);
+  ctx.fillText('Δt ≥ 0: Blau', 10, 30);
+}