fix pitch bend mapping, add inertia when releasing

Source/PluginEditor.cpp

@@ -168,8 +168,8 @@ void VuMeter::paint(juce::Graphics& g) {
         clipPath.addRoundedRectangle(bounds, 9.0f);
         g.reduceClipRegion(clipPath);
 
-        juce::ColourGradient grad(juce::Colour(0xff00cc44).withAlpha(0.4f), 0.0f, bounds.getBottom(),
+        juce::ColourGradient grad(juce::Colour(0xff00cc44).withAlpha(0.7f), 0.0f, bounds.getBottom(),
-                                   juce::Colour(0xffcc2200).withAlpha(0.4f), 0.0f, bounds.getY(), false);
+                                   juce::Colour(0xffcc2200).withAlpha(0.7f), 0.0f, bounds.getY(), false);
         g.setGradientFill(grad);
         g.fillRoundedRectangle(innerBar, 2.0f);
     }
@@ -230,8 +230,8 @@ void WaveformDisplay::paint(juce::Graphics& g) {
         clipPath.addRoundedRectangle(bounds, 9.0f);
         g.reduceClipRegion(clipPath);
 
-        juce::ColourGradient waveGrad(juce::Colour(0xff00ff88).withAlpha(0.33f), 0.0f, bounds.getY(),
+        juce::ColourGradient waveGrad(juce::Colour(0xff00ff88).withAlpha(0.5f), 0.0f, bounds.getY(),
-                                        juce::Colour(0xff005522).withAlpha(0.12f), 0.0f, bounds.getBottom(), false);
+                                        juce::Colour(0xff005522).withAlpha(0.4f), 0.0f, bounds.getBottom(), false);
         g.setGradientFill(waveGrad);
         g.fillPath(filledPath);
 
@@ -309,7 +309,7 @@ void SpectrumAnalyzer::paint(juce::Graphics& g) {
         float bx = x + 1.0f;
         float by = barBottom - barH;
 
-        g.setColour(juce::Colour(0xff00ff88).withAlpha(0.3f));
+        g.setColour(juce::Colour(0xff00ff88).withAlpha(0.4f));
         g.fillRect(bx, by, bw, barH);
     }
 
@@ -1126,7 +1126,7 @@ void PianoRollComponent::paint(juce::Graphics& g) {
 
         bool pressed = processor.isNoteActive(note);
         if (pressed) {
-            g.setColour(juce::Colour(0xffccaa44).withAlpha(0.8f));
+            g.setColour(juce::Colour(0xffccaa44).withAlpha(0.7f));
         } else {
             juce::ColourGradient grad(juce::Colour(0xffe4e4e4).withAlpha(0.7f), static_cast<float>(kx), 0.0f,
                                       juce::Colour(0xffc8c8c8).withAlpha(0.7f), static_cast<float>(kx), static_cast<float>(whiteKeyHeight), false);
@@ -1179,12 +1179,9 @@ void PianoRollComponent::paint(juce::Graphics& g) {
 void PianoRollComponent::mouseDown(const juce::MouseEvent& e) {
     auto pos = e.getPosition();
 
-    // Pitch bend strip
+    // Pitch bend strip: ignore plain clicks — require a vertical drag (see mouseDrag)
     if (pos.x < pitchBendWidth) {
-        float pbNorm = 1.0f - static_cast<float>(pos.y) / static_cast<float>(whiteKeyHeight);
+        pitchBendDragging = false;
-        pbNorm = std::clamp(pbNorm, -1.0f, 1.0f);
-        currentPitchBend = 64 + static_cast<int>(pbNorm * 64.0f);
-        processor.pitchBendValue.store(pbNorm);
         return;
     }
 
@@ -1199,15 +1196,14 @@ void PianoRollComponent::mouseDown(const juce::MouseEvent& e) {
 }
 
 void PianoRollComponent::mouseUp(const juce::MouseEvent& e) {
-    // Reset pitch bend to center on release
+    // Reset pitch bend to center on release (only if it was actually dragged)
-    if (e.getPosition().x < pitchBendWidth || lastTriggeredNote < 0) {
+    if (pitchBendDragging) {
-        if (e.getPosition().x < pitchBendWidth) {
+        pitchBendDragging = false;
-            currentPitchBend = 64;
+        pitchBendGliding = true;
-            processor.pitchBendValue.store(0.0f);
+        pitchBendGlideStart = static_cast<float>(currentPitchBend - 64) / 64.0f;
+        pitchBendGlideStartMs = juce::Time::currentTimeMillis();
         repaint();
     }
-        if (lastTriggeredNote < 0) return;
-    }
 
     if (lastTriggeredNote >= 0) {
         triggerNote(lastTriggeredNote, false);
@@ -1216,12 +1212,33 @@ void PianoRollComponent::mouseUp(const juce::MouseEvent& e) {
     }
 }
 
+void PianoRollComponent::timerCallback() {
+    if (pitchBendGliding) {
+        float t = static_cast<float>(juce::Time::currentTimeMillis() - pitchBendGlideStartMs)
+                  / static_cast<float>(pitchBendGlideMs);
+        if (t >= 1.0f) {
+            pitchBendGliding = false;
+            currentPitchBend = 64;
+            processor.pitchBendValue.store(0.0f);
+        } else {
+            float pbNorm = pitchBendGlideStart * (1.0f - t);
+            currentPitchBend = 64 + static_cast<int>(pbNorm * 64.0f);
+            processor.pitchBendValue.store(pbNorm);
+        }
+        repaint();
+    } else {
+        repaint();
+    }
+}
+
 void PianoRollComponent::mouseDrag(const juce::MouseEvent& e) {
     auto pos = e.getPosition();
 
-    // Pitch bend drag
+    // Pitch bend drag — only while touching the strip
     if (pos.x < pitchBendWidth) {
-        float pbNorm = 1.0f - static_cast<float>(pos.y) / static_cast<float>(whiteKeyHeight);
+        pitchBendDragging = true;
+        pitchBendGliding = false;
+        float pbNorm = 1.0f - 2.0f * static_cast<float>(pos.y) / static_cast<float>(whiteKeyHeight);
         pbNorm = std::clamp(pbNorm, -1.0f, 1.0f);
         currentPitchBend = 64 + static_cast<int>(pbNorm * 64.0f);
         processor.pitchBendValue.store(pbNorm);

Source/PluginEditor.h

@@ -65,9 +65,9 @@ private:
 
 class PianoRollComponent : public juce::Component, public juce::Timer {
 public:
-    explicit PianoRollComponent(ChromaFlockProcessor& p) : processor(p) { startTimerHz(30); }
+    explicit PianoRollComponent(ChromaFlockProcessor& p) : processor(p) { startTimerHz(60); }
     void paint(juce::Graphics& g) override;
-    void timerCallback() override { repaint(); }
+    void timerCallback() override;
     void mouseDown(const juce::MouseEvent& e) override;
     void mouseUp(const juce::MouseEvent& e) override;
     void mouseDrag(const juce::MouseEvent& e) override;
@@ -91,6 +91,12 @@ private:
 
     int lastTriggeredNote = -1;
     int currentPitchBend = 64; // 0..127, 64 = center
+    bool pitchBendDragging = false;
+
+    bool pitchBendGliding = false;
+    float pitchBendGlideStart = 0.0f;
+    juce::int64 pitchBendGlideStartMs = 0;
+    static constexpr int pitchBendGlideMs = 50;
 };
 
 class MainContentComponent : public juce::Component {