Method OnTransportAdvanced

Source/NoteCanvas.cpp:144–255

}

void NoteCanvas::OnTransportAdvanced(float amount)
{
   PROFILER(NoteCanvas);

   if (mFreeRecord && mFreeRecordStartMeasure != -1)
   {
      if (TheTransport->GetMeasurePos(gTime) < amount &&
          !FreeRecordParityMatched())
      {
         int oldNumMeasures = mNumMeasures;
         while (!FreeRecordParityMatched())
            mNumMeasures *= 2;
         int shift = mFreeRecordStartMeasure % mNumMeasures - mFreeRecordStartMeasure % oldNumMeasures;
         SetNumMeasures(mNumMeasures);

         for (auto* element : mCanvas->GetElements())
            element->SetStart(element->GetStart() + float(shift) / mNumMeasures, true);
      }
   }

   if (mStopQueued)
   {
      mNoteOutput.Flush(NextBufferTime(false));
      for (int i = 0; i < mCurrentNotes.size(); ++i)
         mCurrentNotes[i] = nullptr;
      mStopQueued = false;
   }

   if (!mEnabled || !mPlay)
   {
      mCanvas->SetCursorPos(-1);
      return;
   }

   double cursorPlayTime = gTime;
   //if (Transport::sDoEventLookahead)??? should we?
   //   cursorPlayTime += Transport::sEventEarlyMs;
   //else
   cursorPlayTime += amount * TheTransport->MsPerBar();
   double curPos = GetCurPos(cursorPlayTime);

   mCanvas->FillElementsAt(curPos, mNoteChecker);
   for (int i = 0; i < 128; ++i)
   {
      int pitch = 128 - i - 1;
      bool wasOn = mCurrentNotes[pitch] != nullptr || mInputNotes[pitch];
      bool nowOn = mNoteChecker[i] != nullptr || mInputNotes[pitch];
      bool hasChanged = (nowOn || wasOn) && mCurrentNotes[pitch] != static_cast<NoteCanvasElement*>(mNoteChecker[i]);

      if (wasOn && mInputNotes[pitch] == nullptr && hasChanged)
      {
         //note off
         if (mCurrentNotes[pitch])
         {
            double cursorAdvanceSinceEvent = curPos - mCurrentNotes[pitch]->GetEnd();
            if (cursorAdvanceSinceEvent < 0)
               cursorAdvanceSinceEvent += 1;
            double time = cursorPlayTime - cursorAdvanceSinceEvent * TheTransport->MsPerBar() * mNumMeasures;