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https://gitlab.kitware.com/vtk/vtk-m
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101 lines
2.9 KiB
C++
101 lines
2.9 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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//
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//============================================================================
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#ifndef vtk_m_TopologyElementTag_h
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#define vtk_m_TopologyElementTag_h
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#include <vtkm/Types.h>
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namespace vtkm
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{
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/// \brief A tag used to identify the cell elements in a topology.
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///
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/// A topology element refers to some type of substructure of a topology. For
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/// example, a 3D mesh has points, edges, faces, and cells. Each of these is an
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/// example of a topology element and has its own tag.
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///
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struct TopologyElementTagCell
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{
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};
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/// \brief A tag used to identify the point elements in a topology.
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///
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/// A topology element refers to some type of substructure of a topology. For
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/// example, a 3D mesh has points, edges, faces, and cells. Each of these is an
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/// example of a topology element and has its own tag.
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///
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struct TopologyElementTagPoint
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{
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};
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/// \brief A tag used to identify the edge elements in a topology.
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///
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/// A topology element refers to some type of substructure of a topology. For
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/// example, a 3D mesh has points, edges, faces, and cells. Each of these is an
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/// example of a topology element and has its own tag.
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///
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struct TopologyElementTagEdge
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{
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};
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/// \brief A tag used to identify the face elements in a topology.
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///
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/// A topology element refers to some type of substructure of a topology. For
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/// example, a 3D mesh has points, edges, faces, and cells. Each of these is an
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/// example of a topology element and has its own tag.
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///
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struct TopologyElementTagFace
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{
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};
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namespace internal
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{
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/// Checks to see if the given object is a topology element tag.This check is
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/// compatible with C++11 type_traits.
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/// It contains a typedef named \c type that is either std::true_type or
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/// std::false_type. Both of these have a typedef named value with the
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/// respective boolean value.
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///
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template <typename T>
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struct TopologyElementTagCheck : std::false_type
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{
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};
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template <>
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struct TopologyElementTagCheck<vtkm::TopologyElementTagCell> : std::true_type
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{
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};
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template <>
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struct TopologyElementTagCheck<vtkm::TopologyElementTagPoint> : std::true_type
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{
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};
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template <>
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struct TopologyElementTagCheck<vtkm::TopologyElementTagEdge> : std::true_type
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{
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};
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template <>
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struct TopologyElementTagCheck<vtkm::TopologyElementTagFace> : std::true_type
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{
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};
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#define VTKM_IS_TOPOLOGY_ELEMENT_TAG(type) \
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static_assert(::vtkm::internal::TopologyElementTagCheck<type>::value, \
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"Invalid Topology Element Tag being used")
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} // namespace internal
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} // namespace vtkm
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#endif //vtk_m_TopologyElementTag_h
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