AudioViz: mirrored bars

Modules/Audio/MirroredSpectrum.qml

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+import QtQuick
+import qs.Commons
+
+Item {
+  id: root
+  property color fillColor: Color.mPrimary
+  property color strokeColor: Color.mOnSurface
+  property int strokeWidth: 0
+  property var values: []
+
+  // Pre-compute mirroring
+  readonly property int valuesCount: values.length
+  readonly property int totalBars: valuesCount * 2
+  readonly property real barSlotWidth: totalBars > 0 ? width / totalBars : 0
+
+  readonly property real centerY: height / 2
+
+  Repeater {
+    model: root.totalBars
+
+    Rectangle {
+      // The first half of bars are a mirror image (reversed values array).
+      // The second half of bars are in normal order.
+      property int valueIndex: index < root.valuesCount ? root.valuesCount - 1 - index // Mirrored half
+                                                        : index - root.valuesCount // Normal half
+
+      property real amp: root.values[valueIndex]
+
+      property real barHeight: root.height * amp
+
+      color: root.fillColor
+      border.color: root.strokeColor
+      border.width: root.strokeWidth
+      antialiasing: true
+
+      width: root.barSlotWidth * 0.8 // Creates a small gap between bars
+      height: Math.max(1, barHeight)
+      x: index * root.barSlotWidth
+      y: root.centerY - (barHeight / 2)
+    }
+  }
+}