From 61619ec0d52ac79e3d5d57674b80161096fb6dc1 Mon Sep 17 00:00:00 2001
From: Attila Szarvas <attila@juce.com>
Date: Wed, 16 Jun 2021 17:36:26 +0200
Subject: [PATCH] SamplerPluginDemo:  Use both velocity and pressure to control
 note volumes

---
 examples/Plugins/SamplerPluginDemo.h | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/examples/Plugins/SamplerPluginDemo.h b/examples/Plugins/SamplerPluginDemo.h
index 852093e7fb..c03c901840 100644
--- a/examples/Plugins/SamplerPluginDemo.h
+++ b/examples/Plugins/SamplerPluginDemo.h
@@ -272,7 +272,7 @@ public:
         jassert (currentlyPlayingNote.keyState == MPENote::keyDown
               || currentlyPlayingNote.keyState == MPENote::keyDownAndSustained);
 
-        level    .setTargetValue (currentlyPlayingNote.pressure.asUnsignedFloat());
+        level    .setTargetValue (currentlyPlayingNote.noteOnVelocity.asUnsignedFloat());
         frequency.setTargetValue (currentlyPlayingNote.getFrequencyInHertz());
 
         auto loopPoints = samplerSound->getLoopPointsInSeconds();
@@ -282,6 +282,7 @@ public:
         for (auto smoothed : { &level, &frequency, &loopBegin, &loopEnd })
             smoothed->reset (currentSampleRate, smoothingLengthInSeconds);
 
+        previousPressure = currentlyPlayingNote.pressure.asUnsignedFloat();
         currentSamplePos = 0.0;
         tailOff          = 0.0;
     }
@@ -298,7 +299,10 @@ public:
 
     void notePressureChanged() override
     {
-        level.setTargetValue (currentlyPlayingNote.pressure.asUnsignedFloat());
+        const auto currentPressure = static_cast<double> (currentlyPlayingNote.pressure.asUnsignedFloat());
+        const auto deltaPressure = currentPressure - previousPressure;
+        level.setTargetValue (jlimit (0.0, 1.0, level.getCurrentValue() + deltaPressure));
+        previousPressure = currentPressure;
     }
 
     void notePitchbendChanged() override
@@ -489,6 +493,7 @@ private:
     SmoothedValue<double> frequency { 0 };
     SmoothedValue<double> loopBegin;
     SmoothedValue<double> loopEnd;
+    double previousPressure { 0 };
     double currentSamplePos { 0 };
     double tailOff { 0 };
     Direction currentDirection { Direction::forward };