d6b8c8f510
Previously, the items used to identify parts of topology like points, cells, faces, etc. were in an enumeration. However, they are only really used in template specialization, and it is easier to use tags in this case. So, change the enumeration to a set of tag structures. Also made the following changes: * Renamed TopologyType to TopologyElement, which is more indicative of what we are referring to. * Moved the structures from the vtkm::cont namespace to the vtkm namespace. There is no reason not to be able to use them from either the control or execution environments. * Added a VTKM_IS_TOPOLOGY_ELEMENT_TAG macro to do type checks on template arguments that are supposed to be topology element tags.
110 lines
3.4 KiB
C++
110 lines
3.4 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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// 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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// Copyright 2015 Sandia Corporation.
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// Copyright 2015 UT-Battelle, LLC.
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// Copyright 2015 Los Alamos National Security.
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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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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VTKM_BOOST_PRE_INCLUDE
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#include <boost/mpl/assert.hpp>
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VTKM_BOOST_POST_INCLUDE
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namespace vtkm {
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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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/// \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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/// \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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/// \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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namespace internal {
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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 the Boost meta-template programing library (MPL). It
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/// contains a typedef named \c type that is either boost::mpl::true_ or
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/// boost::mpl::false_. 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
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{
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typedef boost::mpl::false_ type;
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};
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template<>
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struct TopologyElementTagCheck<vtkm::TopologyElementTagCell>
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{
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typedef boost::mpl::true_ type;
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};
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template<>
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struct TopologyElementTagCheck<vtkm::TopologyElementTagPoint>
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{
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typedef boost::mpl::true_ type;
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};
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template<>
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struct TopologyElementTagCheck<vtkm::TopologyElementTagEdge>
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{
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typedef boost::mpl::true_ type;
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};
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template<>
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struct TopologyElementTagCheck<vtkm::TopologyElementTagFace>
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{
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typedef boost::mpl::true_ type;
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};
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#define VTKM_IS_TOPOLOGY_ELEMENT_TAG(type) \
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BOOST_MPL_ASSERT(( ::vtkm::internal::TopologyElementTagCheck<type> ))
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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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