Method GetInputArrayPointer

Charts/Core/vtkPlotHistogram2D.cxx:334–373

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
void* vtkPlotHistogram2D::GetInputArrayPointer(vtkDataArray*& inputArray)
{
  vtkDataArray* selectedArray = this->GetSelectedArray();
  if (!selectedArray)
  {
    inputArray = nullptr;
    return nullptr;
  }

  int vectorMode = this->TransferFunction->GetVectorMode();
  if (vtkPlotHistogram2D::CanComputeMagnitude(selectedArray) &&
    vectorMode == vtkScalarsToColors::VectorModes::MAGNITUDE)
  {
    MagnitudeWorker worker;
    this->MagnitudeArray->SetNumberOfTuples(selectedArray->GetNumberOfTuples());

    if (!vtkArrayDispatch::Dispatch::Execute(selectedArray, worker, this->MagnitudeArray))
    {
      // Otherwise fallback to using the vtkDataArray API.
      worker(selectedArray, this->MagnitudeArray);
    }

    inputArray = this->MagnitudeArray;
    return this->MagnitudeArray->GetPointer(0);
  }

  OffsetWorker worker;
  void* array = nullptr;
  int vectorComponent = this->TransferFunction->GetVectorComponent();

  if (!vtkArrayDispatch::DispatchByArray<vtkArrayDispatch::AOSArrays>::Execute(
        selectedArray, worker, array, vectorComponent))
  {
    vtkErrorMacro(<< "Not support selected array of type : " << selectedArray->GetClassName());
    return nullptr;
  }

  inputArray = selectedArray;
  return array;
}

//------------------------------------------------------------------------------
double vtkPlotHistogram2D::GetInputArrayValue(int x, int y, int z)