NG: Add integral reset.

Author: linuscu

packages/nodegraph/include/nodegraph/operations/NodeGraphOpMathNumerical.h

@@ -26,6 +26,7 @@ namespace l::nodegraph {
         {
             AddInput2("x");
             AddInput("Friction", 1.0f, 1, 0.0f, 1.0f);
+            AddInput2("Reset Toggle");
             AddOutput2("Intgr(x)");
         }
 
@@ -38,6 +39,7 @@ namespace l::nodegraph {
         int32_t mReadSamples = 0;
 
         float mOutput = 0.0f;
+        float mResetPrev = 0.0f;
     };
 
     /*********************************************************************/

packages/nodegraph/source/common/operations/NodeGraphOpMathNumerical.cpp

@@ -13,23 +13,30 @@ namespace l::nodegraph {
         auto input0 = &inputs.at(0).Get(numSamples);
         auto friction = inputs.at(1).Get();
         auto frictionFactor = l::math::clamp(l::math::pow(friction, 0.25f), 0.0f, 1.0f);
+        auto resetInput = &inputs.at(2).Get(numSamples);
         auto output = &outputs.at(0).Get(numSamples);
 
         if (mReadSamples == 0) {
             mOutput = 0.0f;
+            mResetPrev = 0.0f;
         }
 
         for (int32_t i = 0; i < numSamples; i++) {
+            auto reset = *resetInput++;
+            if (reset < 0.0f && mResetPrev > 0.0f || reset > 0.0f && mResetPrev < 0.0f) {
+                mOutput = 0.0f;
+            }
             mOutput += *input0++;
             mOutput *= frictionFactor;
             *output++ = mOutput;
+
+            mResetPrev = reset;
         }
 
         mReadSamples += numSamples;
 
         if (mReadSamples >= numCacheSamples) {
             mReadSamples = 0;
-            mOutput = 0.0f;
         }
 
         if (isnan(mOutput)) {