171 lines
6.1 KiB
C++
171 lines
6.1 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 vtkm_m_worklet_ExtractGeometry_h
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#define vtkm_m_worklet_ExtractGeometry_h
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#include <vtkm/worklet/WorkletMapTopology.h>
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#include <vtkm/worklet/DispatcherMapTopology.h>
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/cont/CellSetSingleType.h>
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#include <vtkm/cont/CellSetPermutation.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/CoordinateSystem.h>
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#include <vtkm/cont/ImplicitFunction.h>
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namespace vtkm {
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namespace worklet {
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class ExtractGeometry
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{
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public:
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struct BoolType : vtkm::ListTagBase<bool> {};
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////////////////////////////////////////////////////////////////////////////////////
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// Worklet to identify cells within volume of interest
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class ExtractCellsByVOI : public vtkm::worklet::WorkletMapPointToCell
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{
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public:
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typedef void ControlSignature(CellSetIn cellset,
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WholeArrayIn<Vec3> coordinates,
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FieldOutCell<BoolType> passFlags);
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typedef _3 ExecutionSignature(PointCount, PointIndices, _2);
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VTKM_CONT
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ExtractCellsByVOI() : Function() {}
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VTKM_CONT
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explicit ExtractCellsByVOI(const vtkm::exec::ImplicitFunction &function)
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: Function(function) {}
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template <typename ConnectivityInVec, typename InVecFieldPortalType>
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VTKM_EXEC
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bool operator()( vtkm::Id numIndices,
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const ConnectivityInVec &connectivityIn,
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const InVecFieldPortalType &coordinates) const
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{
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// If any point is outside volume of interest, cell is also
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bool pass = true;
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for (vtkm::IdComponent indx = 0; indx < numIndices; indx++)
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{
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vtkm::Id ptId = connectivityIn[indx];
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vtkm::Vec<FloatDefault,3> coordinate = coordinates.Get(ptId);
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vtkm::FloatDefault value = this->Function.Value(coordinate);
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if (value > 0)
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pass = false;
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}
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return pass;
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}
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private:
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vtkm::exec::ImplicitFunction Function;
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};
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////////////////////////////////////////////////////////////////////////////////////
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// Extract cells by ids permutes input data
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template <typename CellSetType,
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typename DeviceAdapter>
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vtkm::cont::CellSetPermutation<CellSetType> Run(
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const CellSetType &cellSet,
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const vtkm::cont::ArrayHandle<vtkm::Id> &cellIds,
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DeviceAdapter)
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{
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typedef typename vtkm::cont::DeviceAdapterAlgorithm<DeviceAdapter> DeviceAlgorithm;
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typedef vtkm::cont::CellSetPermutation<CellSetType> OutputType;
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DeviceAlgorithm::Copy(cellIds, this->ValidCellIds);
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return OutputType(this->ValidCellIds, cellSet, cellSet.GetName());
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}
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////////////////////////////////////////////////////////////////////////////////////
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// Extract cells by implicit function permutes input data
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template <typename CellSetType,
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typename DeviceAdapter>
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vtkm::cont::CellSetPermutation<CellSetType> Run(
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const CellSetType &cellSet,
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const vtkm::cont::CoordinateSystem &coordinates,
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const vtkm::cont::ImplicitFunction &implicitFunction,
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DeviceAdapter device)
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{
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typedef vtkm::cont::CellSetPermutation<CellSetType> OutputType;
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// Worklet output will be a boolean passFlag array
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vtkm::cont::ArrayHandle<bool> passFlags;
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ExtractCellsByVOI worklet(implicitFunction.PrepareForExecution(device));
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DispatcherMapTopology<ExtractCellsByVOI, DeviceAdapter> dispatcher(worklet);
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dispatcher.Invoke(cellSet,
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coordinates,
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passFlags);
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vtkm::cont::ArrayHandleCounting<vtkm::Id> indices =
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vtkm::cont::make_ArrayHandleCounting(vtkm::Id(0), vtkm::Id(1), passFlags.GetNumberOfValues());
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vtkm::cont::DeviceAdapterAlgorithm<DeviceAdapter>
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::CopyIf(indices, passFlags, this->ValidCellIds);
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return OutputType(this->ValidCellIds, cellSet, cellSet.GetName());
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}
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////////////////////////////////////////////////////////////////////////////////////
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// Permute cell data to match permuted cells
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class PermuteCellData
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{
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public:
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PermuteCellData(const vtkm::cont::ArrayHandle<vtkm::Id> validCellIds,
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vtkm::cont::DynamicArrayHandle &data)
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: ValidCellIds(validCellIds), Data(&data)
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{ }
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template <typename ArrayHandleType>
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void operator()(const ArrayHandleType &input) const
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{
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*(this->Data) = vtkm::cont::DynamicArrayHandle(
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vtkm::cont::make_ArrayHandlePermutation(this->ValidCellIds, input));
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}
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private:
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vtkm::cont::ArrayHandle<vtkm::Id> ValidCellIds;
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vtkm::cont::DynamicArrayHandle *Data;
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};
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vtkm::cont::Field ProcessCellField(const vtkm::cont::Field field) const
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{
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if (field.GetAssociation() != vtkm::cont::Field::ASSOC_CELL_SET)
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{
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throw vtkm::cont::ErrorBadValue("Expecting cell field.");
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}
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vtkm::cont::DynamicArrayHandle data;
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CastAndCall(field, PermuteCellData(this->ValidCellIds, data));
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return vtkm::cont::Field(field.GetName(), field.GetAssociation(),
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field.GetAssocCellSet(), data);
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}
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private:
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vtkm::cont::ArrayHandle<vtkm::Id> ValidCellIds;
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};
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}
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} // namespace vtkm::worklet
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#endif // vtkm_m_worklet_ExtractGeometry_h
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