2015-06-05 14:19:07 +00:00
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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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// 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 vtk_m_worklet_CellAverage_h
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#define vtk_m_worklet_CellAverage_h
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#include <vtkm/worklet/WorkletMapTopology.h>
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2016-10-22 23:58:48 +00:00
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#include <vtkm/VecTraits.h>
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2015-06-05 14:19:07 +00:00
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namespace vtkm {
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namespace worklet {
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2015-08-03 16:06:59 +00:00
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//simple functor that returns the average point value.
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2015-08-25 19:37:53 +00:00
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class CellAverage :
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2015-10-22 00:09:58 +00:00
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public vtkm::worklet::WorkletMapPointToCell
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{
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public:
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2016-10-22 23:58:48 +00:00
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typedef void ControlSignature(FieldInPoint<> inPoints,
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2016-05-17 17:36:23 +00:00
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CellSetIn cellset,
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2016-10-22 23:58:48 +00:00
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FieldOutCell<> outCells);
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2016-05-31 14:42:39 +00:00
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typedef void ExecutionSignature(_1, PointCount, _3);
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2015-06-05 14:19:07 +00:00
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typedef _2 InputDomain;
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2015-08-14 15:06:11 +00:00
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template<typename PointValueVecType, typename OutType>
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VTKM_EXEC_EXPORT
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2015-08-14 15:06:11 +00:00
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void operator()(const PointValueVecType &pointValues,
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const vtkm::IdComponent &numPoints,
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OutType &average) const
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{
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using PointValueType = typename PointValueVecType::ComponentType;
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using PointVecSize =
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std::integral_constant<
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vtkm::IdComponent,
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vtkm::VecTraits<PointValueType>::NUM_COMPONENTS>;
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using OutVecSize =
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std::integral_constant<
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vtkm::IdComponent,
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vtkm::VecTraits<OutType>::NUM_COMPONENTS>;
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this->DoAverage(pointValues,
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numPoints,
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average,
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PointVecSize(),
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OutVecSize());
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}
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private:
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template<typename PointValueVecType, typename OutType>
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2016-10-23 13:45:46 +00:00
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VTKM_EXEC_EXPORT
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2016-10-22 23:58:48 +00:00
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void DoAverage(const PointValueVecType &pointValues,
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const vtkm::IdComponent &numPoints,
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OutType &average,
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std::integral_constant<vtkm::IdComponent,1>,
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std::integral_constant<vtkm::IdComponent,1>) const
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{
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OutType sum = static_cast<OutType>(pointValues[0]);
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for (vtkm::IdComponent pointIndex = 1; pointIndex < numPoints; ++pointIndex)
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{
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2015-08-14 15:06:11 +00:00
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sum = sum + static_cast<OutType>(pointValues[pointIndex]);
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2015-06-05 14:19:07 +00:00
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}
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2015-08-14 15:06:11 +00:00
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average = sum / static_cast<OutType>(numPoints);
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}
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2016-10-22 23:58:48 +00:00
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template<typename PointValueVecType,
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typename OutType,
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vtkm::IdComponent VecSize>
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VTKM_EXEC_EXPORT
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2016-10-22 23:58:48 +00:00
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void DoAverage(const PointValueVecType &pointValues,
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const vtkm::IdComponent &numPoints,
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OutType &average,
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std::integral_constant<vtkm::IdComponent,VecSize>,
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std::integral_constant<vtkm::IdComponent,VecSize>) const
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{
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OutType sum = OutType(pointValues[0]);
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for (vtkm::IdComponent pointIndex = 1; pointIndex < numPoints; ++pointIndex)
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{
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sum = sum + OutType(pointValues[pointIndex]);
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}
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average = sum / OutType(numPoints);
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}
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template<typename PointValueVecType,
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typename OutType,
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vtkm::IdComponent InVecSize,
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vtkm::IdComponent OutVecSize>
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VTKM_EXEC_EXPORT
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void DoAverage(const PointValueVecType &vtkmNotUsed(pointValues),
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const vtkm::IdComponent &vtkmNotUsed(numPoints),
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OutType &vtkmNotUsed(average),
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std::integral_constant<vtkm::IdComponent,InVecSize>,
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std::integral_constant<vtkm::IdComponent,OutVecSize>) const
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{
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this->RaiseError(
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"CellAverage called with mismatched Vec sizes for CellAverage.");
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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_CellAverage_h
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