mirror of
https://gitlab.kitware.com/vtk/vtk-m
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137 lines
4.6 KiB
C++
137 lines
4.6 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 2016 Sandia Corporation.
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// Copyright 2016 UT-Battelle, LLC.
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// Copyright 2016 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_worklet_CellDeepCopy_h
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#define vtk_m_worklet_CellDeepCopy_h
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#include <vtkm/cont/ArrayHandleConstant.h>
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#include <vtkm/cont/ArrayHandleGroupVecVariable.h>
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#include <vtkm/cont/CellSetExplicit.h>
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#include <vtkm/cont/DynamicCellSet.h>
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#include <vtkm/worklet/DispatcherMapTopology.h>
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#include <vtkm/worklet/WorkletMapTopology.h>
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namespace vtkm {
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namespace worklet {
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/// Container for worklets and helper methods to copy a cell set to a new
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/// \c CellSetExplicit structure
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///
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struct CellDeepCopy
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{
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struct CountCellPoints : vtkm::worklet::WorkletMapPointToCell
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{
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typedef void ControlSignature(CellSetIn inputTopology,
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FieldOut<> numPointsInCell);
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typedef _2 ExecutionSignature(PointCount);
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VTKM_EXEC
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vtkm::IdComponent operator()(vtkm::IdComponent numPoints) const
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{
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return numPoints;
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}
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};
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struct PassCellStructure : vtkm::worklet::WorkletMapPointToCell
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{
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typedef void ControlSignature(CellSetIn inputTopology,
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FieldOut<> shapes,
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FieldOut<> pointIndices);
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typedef void ExecutionSignature(CellShape, PointIndices, _2, _3);
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template<typename CellShape,
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typename InPointIndexType,
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typename OutPointIndexType>
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VTKM_EXEC
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void operator()(const CellShape &inShape,
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const InPointIndexType &inPoints,
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vtkm::UInt8 &outShape,
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OutPointIndexType &outPoints) const
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{
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outShape = inShape.Id;
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vtkm::IdComponent numPoints = inPoints.GetNumberOfComponents();
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VTKM_ASSERT(numPoints == outPoints.GetNumberOfComponents());
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for (vtkm::IdComponent pointIndex = 0; pointIndex<numPoints; pointIndex++)
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{
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outPoints[pointIndex] = inPoints[pointIndex];
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}
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}
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};
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template<typename InCellSetType,
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typename ShapeStorage,
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typename NumIndicesStorage,
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typename ConnectivityStorage,
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typename OffsetsStorage,
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typename Device>
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VTKM_CONT
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static void
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Run(const InCellSetType &inCellSet,
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vtkm::cont::CellSetExplicit<ShapeStorage,NumIndicesStorage,ConnectivityStorage,OffsetsStorage> &outCellSet,
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Device)
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{
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VTKM_IS_DYNAMIC_OR_STATIC_CELL_SET(InCellSetType);
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vtkm::cont::ArrayHandle<vtkm::IdComponent,NumIndicesStorage> numIndices;
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vtkm::worklet::DispatcherMapTopology<CountCellPoints,Device> countDispatcher;
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countDispatcher.Invoke(inCellSet, numIndices);
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vtkm::cont::ArrayHandle<vtkm::UInt8,ShapeStorage> shapes;
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vtkm::cont::ArrayHandle<vtkm::Id,ConnectivityStorage> connectivity;
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vtkm::cont::ArrayHandle<vtkm::Id,OffsetsStorage> offsets;
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vtkm::Id connectivitySize;
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vtkm::cont::ConvertNumComponentsToOffsets(
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numIndices, offsets, connectivitySize);
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connectivity.Allocate(connectivitySize);
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vtkm::worklet::DispatcherMapTopology<PassCellStructure,Device> passDispatcher;
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passDispatcher.Invoke(
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inCellSet,
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shapes,
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vtkm::cont::make_ArrayHandleGroupVecVariable(connectivity, offsets));
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vtkm::cont::CellSetExplicit<ShapeStorage,NumIndicesStorage,ConnectivityStorage,OffsetsStorage>
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newCellSet(inCellSet.GetNumberOfPoints(), inCellSet.GetName());
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newCellSet.Fill(shapes, numIndices, connectivity, offsets);
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outCellSet = newCellSet;
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}
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template<typename InCellSetType, typename Device>
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VTKM_CONT
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static vtkm::cont::CellSetExplicit<>
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Run(const InCellSetType &inCellSet, Device)
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{
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VTKM_IS_DYNAMIC_OR_STATIC_CELL_SET(InCellSetType);
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vtkm::cont::CellSetExplicit<> outCellSet;
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Run(inCellSet, outCellSet, Device());
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return outCellSet;
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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_CellDeepCopy_h
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