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c81bc3d501
Each cell shape id has an associated cell shape tag. There is also a macro to write functions that are conditional on the cell shape.
329 lines
12 KiB
C++
329 lines
12 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_cont_CellSetExplicit_h
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#define vtk_m_cont_CellSetExplicit_h
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#include <vtkm/CellShape.h>
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#include <vtkm/TopologyElementTag.h>
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#include <vtkm/cont/CellSet.h>
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#include <vtkm/cont/internal/ConnectivityExplicitInternals.h>
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#include <vtkm/exec/ConnectivityExplicit.h>
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namespace vtkm {
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namespace cont {
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namespace detail {
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template<typename CellSetType, typename FromTopology, typename ToTopology>
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struct CellSetExplicitConnectivityChooser
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{
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typedef vtkm::cont::internal::ConnectivityExplicitInternals<>
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ConnectivityType;
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};
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} // namespace detail
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template<typename ShapeStorageTag = VTKM_DEFAULT_STORAGE_TAG,
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typename NumIndicesStorageTag = VTKM_DEFAULT_STORAGE_TAG,
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typename ConnectivityStorageTag = VTKM_DEFAULT_STORAGE_TAG >
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class CellSetExplicit : public CellSet
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{
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template<typename FromTopology, typename ToTopology>
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struct ConnectivityChooser
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{
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typedef typename detail::CellSetExplicitConnectivityChooser<
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CellSetExplicit<
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ShapeStorageTag,NumIndicesStorageTag,ConnectivityStorageTag>,
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FromTopology,
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ToTopology>::ConnectivityType ConnectivityType;
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};
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public:
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typedef vtkm::Id SchedulingRangeType;
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VTKM_CONT_EXPORT
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CellSetExplicit(const std::string &name = std::string(),
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vtkm::IdComponent dimensionality = 3)
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: CellSet(name, dimensionality),
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ConnectivityLength(-1),
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NumberOfCells(-1)
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{
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}
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VTKM_CONT_EXPORT
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CellSetExplicit(int dimensionality)
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: CellSet(std::string(), dimensionality),
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ConnectivityLength(-1),
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NumberOfCells(-1)
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{
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}
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virtual vtkm::Id GetNumberOfCells() const
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{
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return this->PointToCell.GetNumberOfElements();
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}
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VTKM_CONT_EXPORT
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vtkm::Id GetSchedulingRange(vtkm::TopologyElementTagCell) const
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{
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return this->GetNumberOfCells();
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}
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VTKM_CONT_EXPORT
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vtkm::Id GetNumberOfPointsInCell(vtkm::Id cellIndex) const
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{
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return this->PointToCell.NumIndices.GetPortalConstControl().Get(cellIndex);
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}
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VTKM_CONT_EXPORT
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vtkm::Id GetCellShape(vtkm::Id cellIndex) const
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{
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return this->PointToCell.Shapes.GetPortalConstControl().Get(cellIndex);
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}
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template <vtkm::IdComponent ItemTupleLength>
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VTKM_CONT_EXPORT
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void GetIndices(vtkm::Id index,
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vtkm::Vec<vtkm::Id,ItemTupleLength> &ids) const
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{
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this->PointToCell.BuildIndexOffsets(VTKM_DEFAULT_DEVICE_ADAPTER_TAG());
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vtkm::Id numIndices = this->GetNumberOfIndices(index);
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vtkm::Id start =
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this->PointToCell.IndexOffset.GetPortalConstControl().Get(index);
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for (vtkm::IdComponent i=0; i<numIndices && i<ItemTupleLength; i++)
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ids[i] = this->Connectivity.GetPortalConstControl().Get(start+i);
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}
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/// First method to add cells -- one at a time.
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VTKM_CONT_EXPORT
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void PrepareToAddCells(vtkm::Id numShapes, vtkm::Id connectivityMaxLen)
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{
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this->PointToCell.Shapes.Allocate(numShapes);
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this->PointToCell.NumIndices.Allocate(numShapes);
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this->PointToCell.Connectivity.Allocate(connectivityMaxLen);
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this->PointToCell.IndexOffsets.Allocate(numShapes);
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this->NumberOfCells = 0;
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this->ConnectivityLength = 0;
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}
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template <vtkm::IdComponent ItemTupleLength>
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VTKM_CONT_EXPORT
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void AddCell(vtkm::IdComponent cellType,
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int numVertices,
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const vtkm::Vec<vtkm::Id,ItemTupleLength> &ids)
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{
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this->PointToCell.Shapes.GetPortalControl().Set(this->NumberOfCells, cellType);
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this->PointToCell.NumIndices.GetPortalControl().Set(this->NumberOfCells, numVertices);
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for (vtkm::IdComponent i=0; i < numVertices; ++i)
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{
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this->PointToCell.Connectivity.GetPortalControl().Set(
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this->ConnectivityLength+i,ids[i]);
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}
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this->PointToCell.IndexOffsets.GetPortalControl().Set(
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this->NumberOfCells, this->ConnectivityLength);
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this->NumberOfCells++;
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this->ConnectivityLength += numVertices;
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}
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VTKM_CONT_EXPORT
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void CompleteAddingCells()
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{
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this->PointToCell.Connectivity.Shrink(ConnectivityLength);
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this->PointToCell.ElementsValid = true;
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this->NumberOfCells = this->ConnectivityLength = -1;
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}
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/// Second method to add cells -- all at once.
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/// Copies the data from the vectors, so they can be released.
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VTKM_CONT_EXPORT
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void FillViaCopy(const std::vector<vtkm::Id> &cellTypes,
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const std::vector<vtkm::Id> &numIndices,
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const std::vector<vtkm::Id> &connectivity)
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{
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this->PointToCell.Shapes.Allocate( static_cast<vtkm::Id>(cellTypes.size()) );
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std::copy(cellTypes.begin(), cellTypes.end(),
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vtkm::cont::ArrayPortalToIteratorBegin(
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this->PointToCell.Shapes.GetPortalControl()));
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this->PointToCell.NumIndices.Allocate( static_cast<vtkm::Id>(numIndices.size()) );
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std::copy(numIndices.begin(), numIndices.end(),
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vtkm::cont::ArrayPortalToIteratorBegin(
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this->PointToCell.NumIndices.GetPortalControl()));
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this->PointToCell.Connectivity.Allocate( static_cast<vtkm::Id>(connectivity.size()) );
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std::copy(connectivity.begin(), connectivity.end(),
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vtkm::cont::ArrayPortalToIteratorBegin(
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this->PointToCell.Connectivity.GetPortalControl()));
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this->PointToCell.ElementsValid = true;
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this->PointToCell.IndexOffsetsValid = false;
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}
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/// Second method to add cells -- all at once.
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/// Assigns the array handles to the explicit connectivity. This is
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/// the way you can fill the memory from another system without copying
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void Fill(const vtkm::cont::ArrayHandle<vtkm::Id, ShapeStorageTag> &cellTypes,
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const vtkm::cont::ArrayHandle<vtkm::Id, NumIndicesStorageTag> &numIndices,
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const vtkm::cont::ArrayHandle<vtkm::Id, ConnectivityStorageTag> &connectivity)
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{
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this->PointToCell.Shapes = cellTypes;
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this->PointToCell.NumIndices = numIndices;
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this->PointToCell.Connectivity = connectivity;
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this->PointToCell.ElementsValid = true;
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this->PointToCell.IndexOffsetsValid = false;
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}
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template <typename DeviceAdapter, typename FromTopology, typename ToTopology>
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struct ExecutionTypes
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{
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VTKM_IS_DEVICE_ADAPTER_TAG(DeviceAdapter);
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VTKM_IS_TOPOLOGY_ELEMENT_TAG(FromTopology);
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VTKM_IS_TOPOLOGY_ELEMENT_TAG(ToTopology);
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typedef typename
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ConnectivityChooser<FromTopology,ToTopology>::ConnectivityType
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ContObjectType;
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typedef typename ContObjectType::ShapeArrayType::template ExecutionTypes<DeviceAdapter>::PortalConst ShapePortalType;
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typedef typename ContObjectType::NumIndicesArrayType::template ExecutionTypes<DeviceAdapter>::PortalConst IndicePortalType;
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typedef typename ContObjectType::ConnectivityArrayType::template ExecutionTypes<DeviceAdapter>::PortalConst ConnectivityPortalType;
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typedef typename ContObjectType::IndexOffsetArrayType::template ExecutionTypes<DeviceAdapter>::PortalConst IndexOffsetPortalType;
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typedef vtkm::exec::ConnectivityExplicit<ShapePortalType,
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IndicePortalType,
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ConnectivityPortalType,
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IndexOffsetPortalType
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> ExecObjectType;
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};
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template<typename Device, typename FromTopology, typename ToTopology>
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typename ExecutionTypes<Device,FromTopology,ToTopology>::ExecObjectType
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PrepareForInput(Device, FromTopology, ToTopology) const
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{
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const typename
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ConnectivityChooser<FromTopology,ToTopology>::ConnectivityType
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&connectivity = this->GetConnectivity(FromTopology(), ToTopology());
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VTKM_ASSERT_CONT(connectivity.ElementsValid);
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connectivity.BuildIndexOffsets(Device());
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typedef typename
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ExecutionTypes<Device,FromTopology,ToTopology>::ExecObjectType
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ExecObjType;
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return ExecObjType(connectivity.Shapes.PrepareForInput(Device()),
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connectivity.NumIndices.PrepareForInput(Device()),
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connectivity.Connectivity.PrepareForInput(Device()),
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connectivity.IndexOffsets.PrepareForInput(Device()));
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}
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virtual void PrintSummary(std::ostream &out) const
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{
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out << " ExplicitCellSet: " << this->Name
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<< " dim= " << this->Dimensionality << std::endl;
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out << " PointToCell: " << std::endl;
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this->PointToCell.PrintSummary(out);
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out << " CellToPoint: " << std::endl;
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this->CellToPoint.PrintSummary(out);
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}
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VTKM_CONT_EXPORT
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const vtkm::cont::ArrayHandle<vtkm::Id, ShapeStorageTag> &
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GetShapesArray() const { return this->PointToCell.Shapes; }
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VTKM_CONT_EXPORT
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const vtkm::cont::ArrayHandle<vtkm::Id, NumIndicesStorageTag> &
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GetNumIndicesArray() const { return this->PointToCell.NumIndices; }
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VTKM_CONT_EXPORT
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const vtkm::cont::ArrayHandle<vtkm::Id, ConnectivityStorageTag> &
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GetConnectivityArray() const { return this->PointToCell.Connectivity; }
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VTKM_CONT_EXPORT
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const vtkm::cont::ArrayHandle<vtkm::Id> &
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GetIndexOffsetArray() const {
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return this->PointToCell.IndexOffsets;
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}
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private:
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typename ConnectivityChooser<
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vtkm::TopologyElementTagPoint,vtkm::TopologyElementTagCell>::
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ConnectivityType PointToCell;
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// TODO: Actually implement CellToPoint and other connectivity. (That is,
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// derive the connectivity from PointToCell.
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typename ConnectivityChooser<
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vtkm::TopologyElementTagCell,vtkm::TopologyElementTagPoint>::
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ConnectivityType CellToPoint;
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// A set of overloaded methods to get the connectivity from a pair of
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// topology element types.
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#define VTKM_GET_CONNECTIVITY_METHOD(FromTopology,ToTopology,Ivar) \
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VTKM_CONT_EXPORT \
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const typename ConnectivityChooser< \
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FromTopology,ToTopology>::ConnectivityType & \
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GetConnectivity(FromTopology, ToTopology) const \
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{ \
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return this->Ivar; \
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} \
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VTKM_CONT_EXPORT \
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typename ConnectivityChooser< \
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FromTopology,ToTopology>::ConnectivityType & \
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GetConnectivity(FromTopology, ToTopology) \
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{ \
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return this->Ivar; \
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}
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VTKM_GET_CONNECTIVITY_METHOD(vtkm::TopologyElementTagPoint,
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vtkm::TopologyElementTagCell,
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PointToCell)
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VTKM_GET_CONNECTIVITY_METHOD(vtkm::TopologyElementTagCell,
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vtkm::TopologyElementTagPoint,
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CellToPoint)
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#undef VTKM_GET_CONNECTIVITY_METHOD
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// These are used in the AddCell and related methods to incrementally add
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// cells.
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vtkm::Id ConnectivityLength;
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vtkm::Id NumberOfCells;
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};
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namespace detail {
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template<typename Storage1, typename Storage2, typename Storage3>
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struct CellSetExplicitConnectivityChooser<
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vtkm::cont::CellSetExplicit<Storage1,Storage2,Storage3>,
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vtkm::TopologyElementTagPoint,
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vtkm::TopologyElementTagCell>
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{
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typedef vtkm::cont::internal::ConnectivityExplicitInternals<
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Storage1,Storage2,Storage3> ConnectivityType;
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};
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} // namespace detail
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}
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} // namespace vtkm::cont
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#endif //vtk_m_cont_CellSetExplicit_h
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