Method ThreadedRequestData

Imaging/Morphological/vtkImageSkeleton2D.cxx:314–364

------------------------------------------------------------------------------ This method contains the first switch statement that calls the correct templated function for the input and output region types.

// This method contains the first switch statement that calls the correct
// templated function for the input and output region types.
void vtkImageSkeleton2D::ThreadedRequestData(vtkInformation* vtkNotUsed(request),
  vtkInformationVector** inputVector, vtkInformationVector* vtkNotUsed(outputVector),
  vtkImageData*** inDataV, vtkImageData** outDataV, int outExt[6], int id)
{
  vtkImageData* inData = inDataV[0][0];
  vtkImageData* outData = outDataV[0];
  void* inPtr;
  void* outPtr = outData->GetScalarPointerForExtent(outExt);
  vtkImageData* tempData;
  int inExt[6], wholeExt[6];

  // this filter expects that input is the same type as output.
  if (inData->GetScalarType() != outData->GetScalarType())
  {
    vtkErrorMacro(<< "Execute: input ScalarType, " << inData->GetScalarType()
                  << ", must match out ScalarType " << outData->GetScalarType());
    return;
  }

  vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
  inInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(), inExt);
  inInfo->Get(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(), wholeExt);

  vtkInformation* inScalarInfo = vtkDataObject::GetActiveFieldInformation(
    inInfo, vtkDataObject::FIELD_ASSOCIATION_POINTS, vtkDataSetAttributes::SCALARS);
  if (!inScalarInfo)
  {
    vtkErrorMacro("Missing ActiveScalar info in input information!");
    return;
  }

  // Make a temporary copy of the input data
  tempData = vtkImageData::New();
  tempData->SetExtent(inExt);
  tempData->AllocateScalars(inScalarInfo->Get(vtkImageData::FIELD_ARRAY_TYPE()),
    inScalarInfo->Get(vtkImageData::FIELD_NUMBER_OF_COMPONENTS()));
  tempData->CopyAndCastFrom(inData, inExt);

  inPtr = tempData->GetScalarPointerForExtent(outExt);
  switch (tempData->GetScalarType())
  {
    vtkTemplateMacro(vtkImageSkeleton2DExecute(this, tempData, static_cast<VTK_TT*>(inPtr), outData,
      outExt, static_cast<VTK_TT*>(outPtr), id, wholeExt));
    default:
      vtkErrorMacro(<< "Execute: Unknown ScalarType");
      tempData->Delete();
      return;
  }

  tempData->Delete();
}

void vtkImageSkeleton2D::PrintSelf(ostream& os, vtkIndent indent)
{