Method Invert

src/effects/EqualizationBandSliders.cpp:541–611

}

void EqualizationBandSliders::Invert() // Inverts any curve
{
   auto &parameters = mCurvesList.mParameters;
   auto &linEnvelope = parameters.mLinEnvelope;
   auto &logEnvelope = parameters.mLogEnvelope;

   if (!parameters.mDrawMode)   // Graphic (Slider) mode. Invert the sliders.
   {
      for (size_t i = 0; i < mBandsInUse; i++)
      {
         mEQVals[i] = -mEQVals[i];
         int newPosn = (int)mEQVals[i];
         mSliders[i]->SetValue( newPosn );
         mSlidersOld[i] = newPosn;

         wxString tip;
         if( kThirdOct[i] < 1000.)
            tip.Printf( wxT("%dHz\n%.1fdB"), (int)kThirdOct[i], mEQVals[i] );
         else
            tip.Printf( wxT("%gkHz\n%.1fdB"), kThirdOct[i]/1000., mEQVals[i] );
         mSliders[i]->SetToolTip(tip);
      }
      GraphicEQ(logEnvelope);
   }
   else  // Draw mode.  Invert the points.
   {
      bool lin = parameters.IsLinear(); // refers to the 'log' or 'lin' of the frequency scale, not the amplitude
      size_t numPoints; // number of points in the curve/envelope

      // determine if log or lin curve is the current one
      // and find out how many points are in the curve
      if(lin)  // lin freq scale and so envelope
      {
         numPoints = linEnvelope.GetNumberOfPoints();
      }
      else
      {
         numPoints = logEnvelope.GetNumberOfPoints();
      }

      if( numPoints == 0 )
         return;

      Doubles when{ numPoints };
      Doubles value{ numPoints };

      if(lin)
         linEnvelope.GetPoints( when.get(), value.get(), numPoints );
      else
         logEnvelope.GetPoints( when.get(), value.get(), numPoints );

      // invert the curve
      for (size_t i = 0; i < numPoints; i++)
      {
         if(lin)
            linEnvelope.Reassign(when[i] , -value[i]);
         else
            logEnvelope.Reassign(when[i] , -value[i]);