232 lines
8.7 KiB
C++
232 lines
8.7 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_ExplicitConnectivity_h
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#define vtk_m_cont_ExplicitConnectivity_h
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#include <vtkm/CellType.h>
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#include <vtkm/exec/ExplicitConnectivity.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/Field.h>
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#include <vtkm/cont/DynamicArrayHandle.h>
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#include <vtkm/cont/internal/ArrayPortalFromIterators.h>
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namespace vtkm {
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namespace cont {
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template<typename ShapeStorageTag = VTKM_DEFAULT_STORAGE_TAG,
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typename IndiceStorageTag = VTKM_DEFAULT_STORAGE_TAG,
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typename ConnectivityStorageTag = VTKM_DEFAULT_STORAGE_TAG >
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class ExplicitConnectivity
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{
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public:
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VTKM_CONT_EXPORT
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ExplicitConnectivity()
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{
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NumShapes = 0;
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ConnectivityLength = 0;
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}
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VTKM_CONT_EXPORT
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vtkm::Id GetSchedulingDimensions() const
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{
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return Shapes.GetNumberOfValues();
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}
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VTKM_CONT_EXPORT
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vtkm::Id GetNumberOfElements() const
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{
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return Shapes.GetNumberOfValues();
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}
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VTKM_CONT_EXPORT
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vtkm::Id GetNumberOfIndices(vtkm::Id index)
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{
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return NumIndices.GetPortalControl().Get(index);
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}
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VTKM_CONT_EXPORT
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vtkm::Id GetElementShapeType(vtkm::Id index)
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{
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return Shapes.GetPortalControl().Get(index);
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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, vtkm::Vec<vtkm::Id,ItemTupleLength> &ids)
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{
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int n = GetNumberOfIndices(index);
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int start = MapCellToConnectivityIndex.GetPortalControl().Get(index);
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for (int i=0; i<n && i<ItemTupleLength; i++)
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ids[i] = Connectivity.GetPortalControl().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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Shapes.Allocate(numShapes);
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NumIndices.Allocate(numShapes);
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Connectivity.Allocate(connectivityMaxLen);
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MapCellToConnectivityIndex.Allocate(numShapes);
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NumShapes = 0;
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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::CellType cellType, int numVertices,
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const vtkm::Vec<vtkm::Id,ItemTupleLength> &ids)
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{
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Shapes.GetPortalControl().Set(NumShapes, cellType);
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NumIndices.GetPortalControl().Set(NumShapes, numVertices);
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for (int i=0; i < numVertices; ++i)
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Connectivity.GetPortalControl().Set(ConnectivityLength+i,ids[i]);
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MapCellToConnectivityIndex.GetPortalControl().Set(NumShapes,
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ConnectivityLength);
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NumShapes++;
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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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Connectivity.Shrink(ConnectivityLength);
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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->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(this->Shapes.GetPortalControl()));
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this->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(this->NumIndices.GetPortalControl()));
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this->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(this->Connectivity.GetPortalControl()));
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this->NumShapes = this->Shapes.GetNumberOfValues();
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this->ConnectivityLength = this->Connectivity.GetNumberOfValues();
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// allocate and build reverse index
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MapCellToConnectivityIndex.Allocate(NumShapes);
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vtkm::Id counter = 0;
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for (vtkm::Id i=0; i<NumShapes; ++i)
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{
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MapCellToConnectivityIndex.GetPortalControl().Set(i, counter);
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counter += NumIndices.GetPortalControl().Get(i);
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}
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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, IndiceStorageTag> &numIndices,
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const vtkm::cont::ArrayHandle<vtkm::Id, ConnectivityStorageTag> &connectivity)
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{
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this->Shapes = cellTypes;
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this->NumIndices = numIndices;
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this->Connectivity = connectivity;
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this->NumShapes = this->Shapes.GetNumberOfValues();
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this->ConnectivityLength = this->Connectivity.GetNumberOfValues();
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// allocate and build reverse index
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MapCellToConnectivityIndex.Allocate(this->NumShapes);
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vtkm::Id counter = 0;
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for (vtkm::Id i=0; i<this->NumShapes; ++i)
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{
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MapCellToConnectivityIndex.GetPortalControl().Set(i, counter);
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counter += this->NumIndices.GetPortalConstControl().Get(i);
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}
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}
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template <typename DeviceAdapterTag>
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struct ExecutionTypes
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{
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typedef typename vtkm::cont::ArrayHandle<vtkm::Id, ShapeStorageTag> ShapeHandle;
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typedef typename vtkm::cont::ArrayHandle<vtkm::Id, IndiceStorageTag> IndiceHandle;
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typedef typename vtkm::cont::ArrayHandle<vtkm::Id, ConnectivityStorageTag> ConnectivityHandle;
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typedef vtkm::cont::ArrayHandle<vtkm::Id> MapCellToConnectivityHandle;
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typedef typename ShapeHandle::template ExecutionTypes<DeviceAdapterTag>::PortalConst ShapePortalType;
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typedef typename IndiceHandle::template ExecutionTypes<DeviceAdapterTag>::PortalConst IndicePortalType;
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typedef typename ConnectivityHandle::template ExecutionTypes<DeviceAdapterTag>::PortalConst ConnectivityPortalType;
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typedef typename MapCellToConnectivityHandle::template ExecutionTypes<DeviceAdapterTag>::PortalConst MapConnectivityPortalType;
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typedef vtkm::exec::ExplicitConnectivity<ShapePortalType,
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IndicePortalType,
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ConnectivityPortalType,
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MapConnectivityPortalType
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> ExecObjectType;
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};
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template<typename DeviceAdapterTag>
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typename ExecutionTypes<DeviceAdapterTag>::ExecObjectType
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PrepareForInput(DeviceAdapterTag tag) const
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{
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typedef typename ExecutionTypes<DeviceAdapterTag>::ExecObjectType ExecObjType;
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return ExecObjType(this->Shapes.PrepareForInput(tag),
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this->NumIndices.PrepareForInput(tag),
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this->Connectivity.PrepareForInput(tag),
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this->MapCellToConnectivityIndex.PrepareForInput(tag));
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}
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VTKM_CONT_EXPORT
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virtual void PrintSummary(std::ostream &out)
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{
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out<<" ExplicitConnectivity: #shapes= "<<NumShapes<<" #connectivity= "<<ConnectivityLength<<"\n";
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out<<" Shapes: ";
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printSummary_ArrayHandle(Shapes, out);
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out<<"\n";
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out<<" NumIndices: ";
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printSummary_ArrayHandle(NumIndices, out);
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out<<"\n";
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out<<" Connectivity: ";
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printSummary_ArrayHandle(Connectivity, out);
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out<<"\n";
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}
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vtkm::cont::ArrayHandle<vtkm::Id, ShapeStorageTag> &GetShapesArray() { return Shapes; }
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vtkm::cont::ArrayHandle<vtkm::Id, ShapeStorageTag> &GetNumIndicesArray() { return NumIndices; }
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vtkm::cont::ArrayHandle<vtkm::Id, ShapeStorageTag> &GetConnectivityArray() { return Connectivity; }
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vtkm::cont::ArrayHandle<vtkm::Id, ShapeStorageTag> &GetCellToConnectivityIndexArray() { return MapCellToConnectivityIndex; }
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private:
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vtkm::Id ConnectivityLength;
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vtkm::Id NumShapes;
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vtkm::cont::ArrayHandle<vtkm::Id, ShapeStorageTag> Shapes;
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vtkm::cont::ArrayHandle<vtkm::Id, IndiceStorageTag> NumIndices;
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vtkm::cont::ArrayHandle<vtkm::Id, ConnectivityStorageTag> Connectivity;
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vtkm::cont::ArrayHandle<vtkm::Id> MapCellToConnectivityIndex;
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};
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}
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} // namespace vtkm::cont
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#endif //vtk_m_cont_ExplicitConnectivity_h
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