Update VU meter

jerryuhoo · May 22, 2024 · a5d16aa · a5d16aa
1 parent e97aed6
commit a5d16aa
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Showing 3 changed files with 30 additions and 13 deletions.
diff --git a/Source/GUI/InterfaceDefines.h b/Source/GUI/InterfaceDefines.h
@@ -368,4 +368,4 @@
 #define LIMITER_COLOUR      juce::Colours::mediumpurple
 
 // VU meters
-#define SMOOTH_COEFF        0.2
+#define SMOOTH_COEFF        0.5
diff --git a/Source/Panels/ControlPanel/Graph Components/VUPanel.cpp b/Source/Panels/ControlPanel/Graph Components/VUPanel.cpp
@@ -77,7 +77,7 @@ void VUPanel::paint (juce::Graphics& g)
     if (!isGlobal)
     {
         float threshValue = *(processor.treeState.getRawParameterValue(threshID));
-        float compressorLineY = VU_METER_Y + VU_METER_HEIGHT * -threshValue / 96.0f; // 96 is VU meter range
+        float compressorLineY = VU_METER_Y + VU_METER_HEIGHT * -threshValue / VU_METER_RANGE;
         float pointerX;
         if (processor.getTotalNumInputChannels() == 2)
         {
@@ -87,19 +87,19 @@ void VUPanel::paint (juce::Graphics& g)
         {
             pointerX = VU_METER_X_1 + vuMeterIn.getWidth() / 3.0f;
         }
-        g.drawLine(pointerX, compressorLineY, pointerX - getWidth() / 20, compressorLineY - getHeight() / 20, 1);
-        g.drawLine(pointerX - getWidth() / 20, compressorLineY - getHeight() / 20, pointerX - getWidth() / 20, compressorLineY + getHeight() / 20, 1);
-        g.drawLine(pointerX, compressorLineY, pointerX - getWidth() / 20, compressorLineY + getHeight() / 20, 1);
+
+        g.setColour(juce::Colours::yellowgreen);
+        g.drawLine(pointerX + vuMeterIn.getWidth() / 3.0f, compressorLineY, pointerX + vuMeterIn.getWidth() / 3.0f * 2.0f, compressorLineY, 1);
     }
 
     if (mZoomState)
     {
         // show db meter scale text
         float textX = (VU_METER_X_1 + VU_METER_X_2 - VU_METER_WIDTH) / 2.0f;
-        float text20Y = VU_METER_Y + 20.0f / 96.0f * VU_METER_HEIGHT;
-        float text40Y = VU_METER_Y + 40.0f / 96.0f * VU_METER_HEIGHT;
-        float text60Y = VU_METER_Y + 60.0f / 96.0f * VU_METER_HEIGHT;
-        float text80Y = VU_METER_Y + 80.0f / 96.0f * VU_METER_HEIGHT;
+        float text20Y = VU_METER_Y + 20.0f / VU_METER_RANGE * VU_METER_HEIGHT;
+        float text40Y = VU_METER_Y + 40.0f / VU_METER_RANGE * VU_METER_HEIGHT;
+        float text60Y = VU_METER_Y + 60.0f / VU_METER_RANGE * VU_METER_HEIGHT;
+        float text80Y = VU_METER_Y + 80.0f / VU_METER_RANGE * VU_METER_HEIGHT;
         float textWidth = getWidth() / 5;
         float textHeight = getHeight() / 10;
 //        g.drawText("  0", textX, VU_METER_Y - textHeight / 2.0f, textWidth, textHeight, juce::Justification::centred);
@@ -111,14 +111,26 @@ void VUPanel::paint (juce::Graphics& g)
 
         // show input/output db
         g.setColour(juce::Colours::yellowgreen);
-        float inputValue = ((vuMeterIn.getLeftChannelLevel() + vuMeterIn.getRightChannelLevel()) / 2.0f) * 96.0f - 96.0f;
-        float outputValue = ((vuMeterOut.getLeftChannelLevel() + vuMeterOut.getRightChannelLevel()) / 2.0f) * 96.0f - 96.0f;
+        float inputValue = ((vuMeterIn.getLeftChannelLevel() + vuMeterIn.getRightChannelLevel()) / 2.0f) * VU_METER_RANGE - VU_METER_RANGE;
+        float outputValue = ((vuMeterOut.getLeftChannelLevel() + vuMeterOut.getRightChannelLevel()) / 2.0f) * VU_METER_RANGE - VU_METER_RANGE;
+
+        if (updateCounter == 5)
+        {
+            displayInputValue = inputValue;
+            displayOutputValue = outputValue;
+            updateCounter = 0;
+        }
+        else
+        {
+            updateCounter++;
+        }
+
         juce::Rectangle<int> localBounds = getLocalBounds();
         juce::Rectangle<int> leftArea = localBounds.removeFromLeft(getWidth() / 4);
         juce::Rectangle<int> rightArea = localBounds.removeFromRight(getWidth() / 3);
         g.setFont(juce::Font(KNOB_FONT, 20.0f * getHeight() / 150.0f, juce::Font::bold));
-        g.drawText(juce::String(inputValue, 1), leftArea, juce::Justification::centred);
-        g.drawText(juce::String(outputValue, 1), rightArea, juce::Justification::centred);
+        g.drawText(juce::String(displayInputValue, 1), leftArea, juce::Justification::centred);
+        g.drawText(juce::String(displayOutputValue, 1), rightArea, juce::Justification::centred);
 
         g.setColour(juce::Colours::yellowgreen.withAlpha(0.5f));
         g.setFont(juce::Font(KNOB_FONT, 14.0f * getHeight() / 150.0f, juce::Font::plain));

diff --git a/Source/Panels/ControlPanel/Graph Components/VUPanel.h b/Source/Panels/ControlPanel/Graph Components/VUPanel.h
@@ -32,7 +32,12 @@ class VUPanel  : public GraphTemplate, juce::Timer
 private:
     FireAudioProcessor &processor;
     int focusBandNum;
+    const float VU_METER_RANGE = 96.0f;
     VUMeter vuMeterIn;
     VUMeter vuMeterOut;
+    // for smoothing meter values
+    int updateCounter = 0;
+    float displayInputValue = 0.0f;
+    float displayOutputValue = 0.0f;
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (VUPanel)
 };