Method RequestData

Filters/Geometry/vtkProjectSphereFilter.cxx:96–125

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//------------------------------------------------------------------------------
int vtkProjectSphereFilter::RequestData(vtkInformation* vtkNotUsed(request),
  vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
  vtkDebugMacro("RequestData");

  vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
  vtkInformation* outInfo = outputVector->GetInformationObject(0);

  vtkPointSet* input = vtkPointSet::SafeDownCast(inInfo->Get(vtkDataObject::DATA_OBJECT()));
  if (vtkPolyData* poly = vtkPolyData::SafeDownCast(input))
  {
    if (poly->GetVerts()->GetNumberOfCells() > 0 || poly->GetLines()->GetNumberOfCells() > 0 ||
      poly->GetStrips()->GetNumberOfCells() > 0)
    {
      vtkErrorMacro("Can only deal with vtkPolyData polys.");
      return 0;
    }
  }

  vtkPointSet* output = vtkPointSet::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT()));

  vtkNew<vtkIdList> polePointIds;
  this->TransformPointInformation(input, output, polePointIds.GetPointer());
  this->TransformCellInformation(input, output, polePointIds.GetPointer());
  output->GetFieldData()->ShallowCopy(input->GetFieldData());

  vtkDebugMacro("Leaving RequestData");

  return 1;
}

//------------------------------------------------------------------------------
void vtkProjectSphereFilter::TransformPointInformation(