92 lines
3.3 KiB
C++
92 lines
3.3 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_NodeIdTriplet_h
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#define vtk_m_exec_arg_NodeIdTriplet_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 work index.
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///
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/// The \c AspectTagNodeIdTriplet aspect tag causes the \c Fetch class to
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/// obtain the first three node IDs for a cell from a topology object.
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///
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struct AspectTagNodeIdTriplet { };
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/// \brief The \c ExecutionSignature tag to use to get the node IDs.
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///
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struct NodeIdTriplet : 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::AspectTagNodeIdTriplet AspectTag;
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};
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template<typename FetchTag, typename Invocation>
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struct Fetch<FetchTag, vtkm::exec::arg::AspectTagNodeIdTriplet, Invocation, 1>
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{
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typedef vtkm::Id3 ValueType;
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VTKM_EXEC_EXPORT
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vtkm::Id3 Load(vtkm::Id index, const Invocation &invocation) const
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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
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// some dynamic casting performed so objects like DynamicArrayHandle get
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// cast to ArrayHandle).
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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
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// we got from the Invocation).
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typedef typename ParameterInterface::
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template ParameterType<InputDomainIndex>::type TopologyType;
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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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TopologyType topology =
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invocation.Parameters.template GetParameter<InputDomainIndex>();
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return vtkm::Id3(topology.Connectivity.GetPortalControl().Get(index*3+0),
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topology.Connectivity.GetPortalControl().Get(index*3+1),
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topology.Connectivity.GetPortalControl().Get(index*3+2));
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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_NodeIdTriplet_h
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