Method CopyAndCastFrom

Common/DataModel/vtkImageData.cxx:1150–1168

------------------------------------------------------------------------------ This method is passed a input and output region, and executes the filter algorithm to fill the output from the input. It just executes a switch statement to call the correct function for the regions data types.

// It just executes a switch statement to call the correct function for
// the regions data types.
void vtkImageData::CopyAndCastFrom(vtkImageData* inData, int extent[6])
{
  void* inPtr = inData->GetScalarPointerForExtent(extent);

  if (inPtr == nullptr)
  {
    vtkErrorMacro("Scalars not allocated.");
    return;
  }

  int scalarType = inData->GetPointData()->GetScalars()->GetDataType();
  switch (scalarType)
  {
    vtkTemplateMacro(vtkImageDataCastExecute(inData, static_cast<VTK_TT*>(inPtr), this, extent));
    default:
      vtkErrorMacro(<< "Execute: Unknown input ScalarType");
      return;
  }
}

//------------------------------------------------------------------------------
void vtkImageData::Crop(const int* updateExtent)