63 lines
2.0 KiB
C++
63 lines
2.0 KiB
C++
//=============================================================================
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//
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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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// 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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// 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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//=============================================================================
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#ifndef vtk_m_worklet_ScatterIdentity_h
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#define vtk_m_worklet_ScatterIdentity_h
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#include <vtkm/cont/ArrayHandleConstant.h>
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#include <vtkm/cont/ArrayHandleIndex.h>
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namespace vtkm {
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namespace worklet {
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/// \brief A scatter that maps input directly to output.
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///
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/// The \c Scatter classes are responsible for defining how much output is
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/// generated based on some sized input. \c ScatterIdentity establishes a 1 to
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/// 1 mapping from output to input (and vice versa). That is, every input
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/// element generates one output element associated with it. This is the
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/// default for basic maps.
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///
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struct ScatterIdentity
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{
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typedef vtkm::cont::ArrayHandleIndex OutputToInputMapType;
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OutputToInputMapType GetOutputToInputMap(vtkm::Id numInputElements) const
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{
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return OutputToInputMapType(numInputElements);
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}
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typedef vtkm::cont::ArrayHandleConstant<vtkm::IdComponent> VisitArrayType;
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VisitArrayType GetVisitArray(vtkm::Id numInputElements) const
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{
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return VisitArrayType(1, numInputElements);
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}
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vtkm::Id GetNumberOfOutputValues(vtkm::Id numInputElements) const
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{
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return numInputElements;
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}
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};
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}
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} // namespace vtkm::worklet
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#endif //vtk_m_worklet_ScatterIdentity_h
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