mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-07-30 18:50:59 +00:00
01bacbcde0
Add support for masks, vector magnitude range (L2 norm), and finite values only range computations.
53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
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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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//
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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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#include <vtkm/cont/internal/ArrayRangeComputeUtils.h>
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#include <vtkm/cont/Algorithm.h>
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#include <vtkm/cont/ArrayHandleIndex.h>
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#include <vtkm/cont/ArrayHandleTransform.h>
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#include <vtkm/cont/ArrayHandleZip.h>
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#include <vtkm/BinaryOperators.h>
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#include <limits>
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namespace
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{
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struct UnmaskedIndicesTransform
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{
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VTKM_EXEC vtkm::Id2 operator()(vtkm::Pair<vtkm::UInt8, vtkm::Id> in) const
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{
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if (in.first == 0)
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{
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return { std::numeric_limits<vtkm::Id>::max(), std::numeric_limits<vtkm::Id>::min() };
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}
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return { in.second };
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}
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};
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} // namespace
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vtkm::Id2 vtkm::cont::internal::GetFirstAndLastUnmaskedIndices(
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const vtkm::cont::ArrayHandle<vtkm::UInt8>& maskArray,
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vtkm::cont::DeviceAdapterId device)
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{
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vtkm::Id2 initialValue = { std::numeric_limits<vtkm::Id>::max(),
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std::numeric_limits<vtkm::Id>::min() };
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auto maskValsAndInds = vtkm::cont::make_ArrayHandleZip(
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maskArray, vtkm::cont::ArrayHandleIndex(maskArray.GetNumberOfValues()));
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auto unmaskedIndices =
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vtkm::cont::make_ArrayHandleTransform(maskValsAndInds, UnmaskedIndicesTransform{});
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return vtkm::cont::Algorithm::Reduce(
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device, unmaskedIndices, initialValue, vtkm::MinAndMax<vtkm::Id>());
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}
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