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https://gitlab.kitware.com/vtk/vtk-m
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96 lines
3.4 KiB
C++
96 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 2014 Sandia Corporation.
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// Copyright 2014 UT-Battelle, LLC.
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// Copyright 2014 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_exec_arg_CellShape_h
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#define vtk_m_exec_arg_CellShape_h
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#include <vtkm/exec/arg/Fetch.h>
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#include <vtkm/exec/arg/ExecutionSignatureTagBase.h>
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namespace vtkm {
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namespace exec {
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namespace arg {
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/// \brief Aspect tag to use for getting the cell shape.
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///
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/// The \c AspectTagCellShape aspect tag causes the \c Fetch class to
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/// obtain the type of element (e.g. cell cell) from the topology object.
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///
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struct AspectTagCellShape { };
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/// \brief The \c ExecutionSignature tag to use to get the cell shape.
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///
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struct CellShape : vtkm::exec::arg::ExecutionSignatureTagBase
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{
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static const vtkm::IdComponent INDEX = 1;
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typedef vtkm::exec::arg::AspectTagCellShape AspectTag;
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};
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template<typename FetchTag,
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typename Invocation,
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vtkm::IdComponent ParameterIndex>
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struct Fetch<
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FetchTag, vtkm::exec::arg::AspectTagCellShape, Invocation, ParameterIndex>
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{
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// The parameter for the input domain is stored in the Invocation. (It is
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// also in the worklet, but it is safer to get it from the Invocation
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// in case some other dispatch operation had to modify it.)
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static const vtkm::IdComponent InputDomainIndex =
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Invocation::InputDomainIndex;
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// ParameterInterface (from Invocation) is a FunctionInterface type
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// containing types for all objects passed to the Invoke method (with some
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// dynamic casting performed so objects like DynamicArrayHandle get cast to
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// ArrayHandle) and then transferred to the execution environment. This
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// interface contains a set of exec objects.
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typedef typename Invocation::ParameterInterface ParameterInterface;
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// This is the type for the input domain (derived from the last two things we
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// got from the Invocation). Assuming the input domain is set up correctly,
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// this should be one of the vtkm::exec::Connectivity* classes.
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typedef typename ParameterInterface::
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template ParameterType<InputDomainIndex>::type ConnectivityType;
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typedef typename ConnectivityType::CellShapeTag ValueType;
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VTKM_SUPPRESS_EXEC_WARNINGS
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VTKM_EXEC_EXPORT
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ValueType Load(vtkm::Id index, const Invocation &invocation) const
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{
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// We can pull the input domain parameter (the data specifying the input
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// domain) from the invocation object.
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ConnectivityType connectivity =
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invocation.Parameters.template GetParameter<InputDomainIndex>();
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return connectivity.GetCellShape(index);
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}
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VTKM_EXEC_EXPORT
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void Store(vtkm::Id, const Invocation &, const ValueType &) const
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{
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// Store is a no-op.
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}
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};
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}
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}
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} // namespace vtkm::exec::arg
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#endif //vtk_m_exec_arg_CellShape_h
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