feat(charts): smooth CPU/RAM and Network curves using cubic Bézier splines (v1.4.0)

public/api.php

@@ -140,7 +140,7 @@ try {
             $installedVerData = file_exists("{$appDir}/version.json")
                 ? json_decode((string)file_get_contents("{$appDir}/version.json"), true)
                 : [];
-            $installedVer = $installedVerData['version'] ?? '1.3.9';
+            $installedVer = $installedVerData['version'] ?? '1.4.0';
 
             echo json_encode([
                 'success'          => true,

public/assets/app.js

@@ -629,20 +629,56 @@ function drawDualAreaChart(svgId, seriesA, seriesB, maxVal, colorA, colorB, unit
     const padTop = 14;
     const padBottom = 18;
     const plotH = height - padTop - padBottom;
+    const baselineY = padTop + plotH;
     const safeMax = maxVal > 0 ? maxVal : 100;
 
-    const toPoints = (arr) => arr.map((val, idx) => {
-        const x = (idx / (arr.length - 1)) * width;
-        const ratio = Math.max(0, Math.min(1, val / safeMax));
-        const y = padTop + plotH - (ratio * plotH);
-        return `${x.toFixed(1)},${y.toFixed(1)}`;
-    });
+    const clampY = (y) => Math.max(padTop, Math.min(baselineY, y));
 
-    const ptsA = toPoints(seriesA);
-    const ptsB = toPoints(seriesB);
+    // Génération de courbes splines adoucies (Catmull-Rom / Bézier cubique) pour éliminer les angles pointus
+    const computeSmoothPaths = (arr, tension = 0.2) => {
+        if (!arr || arr.length === 0) return { line: '', area: '' };
 
-    const areaA = `0,${padTop + plotH} ` + ptsA.join(' ') + ` ${width},${padTop + plotH}`;
-    const areaB = `0,${padTop + plotH} ` + ptsB.join(' ') + ` ${width},${padTop + plotH}`;
+        const points = arr.map((val, idx) => {
+            const x = (idx / (arr.length - 1)) * width;
+            const ratio = Math.max(0, Math.min(1, val / safeMax));
+            const y = baselineY - (ratio * plotH);
+            return { x, y };
+        });
+
+        if (points.length === 1) {
+            return {
+                line: `M ${points[0].x.toFixed(1)},${points[0].y.toFixed(1)}`,
+                area: `M 0,${baselineY} L ${points[0].x.toFixed(1)},${points[0].y.toFixed(1)} L ${width},${baselineY} Z`
+            };
+        }
+
+        let line = `M ${points[0].x.toFixed(1)},${points[0].y.toFixed(1)}`;
+
+        for (let i = 0; i < points.length - 1; i++) {
+            const p0 = points[i === 0 ? i : i - 1];
+            const p1 = points[i];
+            const p2 = points[i + 1];
+            const p3 = points[i + 2 < points.length ? i + 2 : i + 1];
+
+            let cp1x = p1.x + (p2.x - p0.x) * tension;
+            let cp1y = p1.y + (p2.y - p0.y) * tension;
+
+            let cp2x = p2.x - (p3.x - p1.x) * tension;
+            let cp2y = p2.y - (p3.y - p1.y) * tension;
+
+            // Clamping vertical pour garantir que la courbe ne déborde pas sous l'axe ni au-dessus du max
+            cp1y = clampY(cp1y);
+            cp2y = clampY(cp2y);
+
+            line += ` C ${cp1x.toFixed(1)},${cp1y.toFixed(1)} ${cp2x.toFixed(1)},${cp2y.toFixed(1)} ${p2.x.toFixed(1)},${p2.y.toFixed(1)}`;
+        }
+
+        const area = `${line} L ${width},${baselineY} L 0,${baselineY} Z`;
+        return { line, area };
+    };
+
+    const pathA = computeSmoothPaths(seriesA);
+    const pathB = computeSmoothPaths(seriesB);
 
     const gradIdA = `${svgId}-grad-a`;
     const gradIdB = `${svgId}-grad-b`;
@@ -662,18 +698,18 @@ function drawDualAreaChart(svgId, seriesA, seriesB, maxVal, colorA, colorB, unit
         <!-- Lignes de grille horizontales -->
         <line x1="0" y1="${padTop}" x2="${width}" y2="${padTop}" stroke="#2c323f" stroke-dasharray="3,3" stroke-width="1"/>
         <line x1="0" y1="${padTop + plotH / 2}" x2="${width}" y2="${padTop + plotH / 2}" stroke="#2c323f" stroke-dasharray="3,3" stroke-width="1"/>
-        <line x1="0" y1="${padTop + plotH}" x2="${width}" y2="${padTop + plotH}" stroke="#3d4657" stroke-width="1"/>
+        <line x1="0" y1="${baselineY}" x2="${width}" y2="${baselineY}" stroke="#3d4657" stroke-width="1"/>
 
         <text x="6" y="${padTop + 10}" fill="#94a3b8" font-size="10" font-family="monospace">${Math.round(safeMax)} ${unitLabel}</text>
         <text x="6" y="${padTop + plotH / 2 - 4}" fill="#64748b" font-size="10" font-family="monospace">${Math.round(safeMax / 2)} ${unitLabel}</text>
 
-        <!-- Courbe B -->
-        <polygon points="${areaB}" fill="url(#${gradIdB})"/>
-        <polyline fill="none" stroke="${colorB}" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round" points="${ptsB.join(' ')}"/>
+        <!-- Courbe B lissée avec dégradé -->
+        <path d="${pathB.area}" fill="url(#${gradIdB})"/>
+        <path d="${pathB.line}" fill="none" stroke="${colorB}" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round"/>
 
-        <!-- Courbe A -->
-        <polygon points="${areaA}" fill="url(#${gradIdA})"/>
-        <polyline fill="none" stroke="${colorA}" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round" points="${ptsA.join(' ')}"/>
+        <!-- Courbe A lissée avec dégradé -->
+        <path d="${pathA.area}" fill="url(#${gradIdA})"/>
+        <path d="${pathA.line}" fill="none" stroke="${colorA}" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"/>
     `;
 }
 

public/index.php

@@ -12,7 +12,7 @@ $isAuth = Auth::isAuthenticated();
 $currentUser = Auth::getUsername();
 
 $appVerData = file_exists(__DIR__ . '/../version.json') ? json_decode((string)file_get_contents(__DIR__ . '/../version.json'), true) : [];
-$appVersion = $appVerData['version'] ?? '1.3.9';
+$appVersion = $appVerData['version'] ?? '1.4.0';
 ?>
 <!DOCTYPE html>
 <html lang="fr" class="h-full">