mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-10-06 10:29:00 +00:00
68d5d26951
Now that UInt8 has become part of the list of default types compiled, there have been numerous warnings that have popped up about converting ints to unsigned char. The reason for these is when you do arithmetic (+, -, *, or /) on a char or short, it is automatically upconverted to a 32-bit integer. When you then try to set that back to a smaller integer, you get a conversion warning. This change gets around this problem by explicitly telling the compiler we expect this type with static_cast. We have also talked about disabling conversion warnings, but this has not happened on all dashboards, and it is not that hard to work around the warning.
98 lines
3.7 KiB
C++
98 lines
3.7 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 2014 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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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-NA0003525 with NTESS,
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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_PointAverage_h
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#define vtk_m_worklet_PointAverage_h
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#include <vtkm/worklet/WorkletMapTopology.h>
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#include <vtkm/VecTraits.h>
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namespace vtkm
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{
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namespace worklet
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{
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//simple functor that returns the average point value of a given
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//cell based field.
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class PointAverage : public vtkm::worklet::WorkletMapCellToPoint
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{
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public:
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using ControlSignature = void(CellSetIn cellset,
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FieldInCell inCellField,
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FieldOutPoint outPointField);
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using ExecutionSignature = void(CellCount, _2, _3);
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using InputDomain = _1;
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template <typename CellValueVecType, typename OutType>
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VTKM_EXEC void operator()(const vtkm::IdComponent& numCells,
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const CellValueVecType& cellValues,
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OutType& average) const
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{
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using CellValueType = typename CellValueVecType::ComponentType;
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using InVecSize =
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std::integral_constant<vtkm::IdComponent, vtkm::VecTraits<CellValueType>::NUM_COMPONENTS>;
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using OutVecSize =
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std::integral_constant<vtkm::IdComponent, vtkm::VecTraits<OutType>::NUM_COMPONENTS>;
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using SameLengthVectors = typename std::is_same<InVecSize, OutVecSize>::type;
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average = vtkm::TypeTraits<OutType>::ZeroInitialization();
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if (numCells != 0)
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{
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this->DoAverage(numCells, cellValues, average, SameLengthVectors());
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}
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}
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private:
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template <typename CellValueVecType, typename OutType>
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VTKM_EXEC void DoAverage(const vtkm::IdComponent& numCells,
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const CellValueVecType& cellValues,
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OutType& average,
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std::true_type) const
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{
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using OutComponentType = typename vtkm::VecTraits<OutType>::ComponentType;
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OutType sum = OutType(cellValues[0]);
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for (vtkm::IdComponent cellIndex = 1; cellIndex < numCells; ++cellIndex)
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{
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// OutType constructor is for when OutType is a Vec.
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// static_cast is for when OutType is a small int that gets promoted to int32.
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sum = static_cast<OutType>(sum + OutType(cellValues[cellIndex]));
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}
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// OutType constructor is for when OutType is a Vec.
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// static_cast is for when OutType is a small int that gets promoted to int32.
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average = static_cast<OutType>(sum / OutType(static_cast<OutComponentType>(numCells)));
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}
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template <typename CellValueVecType, typename OutType>
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VTKM_EXEC void DoAverage(const vtkm::IdComponent& vtkmNotUsed(numCells),
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const CellValueVecType& vtkmNotUsed(cellValues),
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OutType& vtkmNotUsed(average),
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std::false_type) const
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{
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this->RaiseError("PointAverage called with mismatched Vec sizes for PointAverage.");
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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_PointAverage_h
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