CellTraits.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_CellTraits_h
#define viskores_CellTraits_h
 
#include <viskores/CellShape.h>
 
namespace viskores
{
 
template <viskores::IdComponent dimension>
struct CellTopologicalDimensionsTag
{
};
 
struct CellTraitsTagSizeFixed
{
};
 
struct CellTraitsTagSizeVariable
{
};
 
template <class CellTag>
struct CellTraits
#ifdef VISKORES_DOXYGEN_ONLY
{
  static const viskores::IdComponent TOPOLOGICAL_DIMENSIONS = 3;
 
  using TopologicalDimensionsTag = viskores::CellTopologicalDimensionsTag<TOPOLOGICAL_DIMENSIONS>;
 
  using IsSizeFixed = viskores::CellTraitsTagSizeFixed;
 
  static constexpr viskores::IdComponent NUM_POINTS = 3;
};
#else  // VISKORES_DOXYGEN_ONLY
  ;
#endif // VISKORES_DOXYGEN_ONLY
 
//-----------------------------------------------------------------------------
 
// Define traits for every cell type.
 
#define VISKORES_DEFINE_CELL_TRAITS(name, dimensions, numPoints)                \
  template <>                                                                   \
  struct CellTraits<viskores::CellShapeTag##name>                               \
  {                                                                             \
    static constexpr viskores::IdComponent TOPOLOGICAL_DIMENSIONS = dimensions; \
    using TopologicalDimensionsTag =                                            \
      viskores::CellTopologicalDimensionsTag<TOPOLOGICAL_DIMENSIONS>;           \
    using IsSizeFixed = viskores::CellTraitsTagSizeFixed;                       \
    static constexpr viskores::IdComponent NUM_POINTS = numPoints;              \
  }
 
#define VISKORES_DEFINE_CELL_TRAITS_VARIABLE(name, dimensions)                  \
  template <>                                                                   \
  struct CellTraits<viskores::CellShapeTag##name>                               \
  {                                                                             \
    static constexpr viskores::IdComponent TOPOLOGICAL_DIMENSIONS = dimensions; \
    using TopologicalDimensionsTag =                                            \
      viskores::CellTopologicalDimensionsTag<TOPOLOGICAL_DIMENSIONS>;           \
    using IsSizeFixed = viskores::CellTraitsTagSizeVariable;                    \
  }
 
VISKORES_DEFINE_CELL_TRAITS(Empty, 0, 0);
VISKORES_DEFINE_CELL_TRAITS(Vertex, 0, 1);
//VISKORES_DEFINE_CELL_TRAITS_VARIABLE(PolyVertex, 0);
VISKORES_DEFINE_CELL_TRAITS(Line, 1, 2);
VISKORES_DEFINE_CELL_TRAITS_VARIABLE(PolyLine, 1);
VISKORES_DEFINE_CELL_TRAITS(Triangle, 2, 3);
//VISKORES_DEFINE_CELL_TRAITS_VARIABLE(TriangleStrip, 2);
VISKORES_DEFINE_CELL_TRAITS_VARIABLE(Polygon, 2);
//VISKORES_DEFINE_CELL_TRAITS(Pixel, 2, 4);
VISKORES_DEFINE_CELL_TRAITS(Quad, 2, 4);
VISKORES_DEFINE_CELL_TRAITS(Tetra, 3, 4);
//VISKORES_DEFINE_CELL_TRAITS(Voxel, 3, 8);
VISKORES_DEFINE_CELL_TRAITS(Hexahedron, 3, 8);
VISKORES_DEFINE_CELL_TRAITS(Wedge, 3, 6);
VISKORES_DEFINE_CELL_TRAITS(Pyramid, 3, 5);
 
#undef VISKORES_DEFINE_CELL_TRAITS
 
} // namespace viskores
 
#endif //viskores_CellTraits_h