ExternalFaces.h

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//============================================================================
//  The contents of this file are covered by the Viskores license. See
//  LICENSE.txt for details.
//
//  By contributing to this file, all contributors agree to the Developer
//  Certificate of Origin Version 1.1 (DCO 1.1) as stated in DCO.txt.
//============================================================================
 
//============================================================================
//  Copyright (c) Kitware, Inc.
//  All rights reserved.
//  See LICENSE.txt for details.
//
//  This software is distributed WITHOUT ANY WARRANTY; without even
//  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
//  PURPOSE.  See the above copyright notice for more information.
//============================================================================
 
#ifndef viskores_filter_entity_extraction_ExternalFaces_h
#define viskores_filter_entity_extraction_ExternalFaces_h
 
#include <viskores/filter/Filter.h>
#include <viskores/filter/entity_extraction/viskores_filter_entity_extraction_export.h>
 
namespace viskores
{
namespace worklet
{
struct ExternalFaces;
}
namespace filter
{
namespace entity_extraction
{
class VISKORES_FILTER_ENTITY_EXTRACTION_EXPORT ExternalFaces : public viskores::filter::Filter
{
public:
  ExternalFaces();
  ~ExternalFaces() override;
 
  // New Design: I am too lazy to make this filter thread-safe. Let's use it as an example of
  // thread un-safe filter.
  bool CanThread() const override { return false; }
 
  VISKORES_CONT bool GetCompactPoints() const { return this->CompactPoints; }
  VISKORES_CONT void SetCompactPoints(bool value) { this->CompactPoints = value; }
 
  VISKORES_CONT bool GetPassPolyData() const { return this->PassPolyData; }
  VISKORES_CONT void SetPassPolyData(bool value);
 
private:
  VISKORES_CONT viskores::cont::DataSet DoExecute(const viskores::cont::DataSet& input) override;
 
  viskores::cont::DataSet GenerateOutput(const viskores::cont::DataSet& input,
                                         viskores::cont::UnknownCellSet& outCellSet);
 
  VISKORES_CONT bool MapFieldOntoOutput(viskores::cont::DataSet& result,
                                        const viskores::cont::Field& field);
 
  bool CompactPoints = false;
  bool PassPolyData = true;
 
  // Note: This shared state as a data member requires us to explicitly implement the
  // constructor and destructor in the .cxx file, after the compiler actually have
  // seen the definition of worklet:ExternalFaces, even if the implementation of
  // the cstr/dstr is just = default. Otherwise the compiler does not know how to
  // allocate/free storage for the std::unique_ptr.
  std::unique_ptr<viskores::worklet::ExternalFaces> Worklet;
};
} // namespace entity_extraction
} // namespace filter
} // namespace viskores
 
#endif // viskores_filter_entity_extraction_ExternalFaces_h