mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 21:33:55 +00:00
4d8f05baef
Somewhere during this edit I removed a header file that didn't strictly need to be there. This caused me to have to add ```cpp ``` in several places in the code.
109 lines
3.4 KiB
C++
109 lines
3.4 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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//
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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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#ifndef vtk_m_worklet_ImageDifference_h
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#define vtk_m_worklet_ImageDifference_h
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#include <vtkm/VecTraits.h>
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#include <vtkm/VectorAnalysis.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/DeviceAdapterAlgorithm.h>
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#include <vtkm/worklet/WorkletMapField.h>
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#include <vtkm/worklet/WorkletPointNeighborhood.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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class ImageDifferenceNeighborhood : public vtkm::worklet::WorkletPointNeighborhood
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{
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public:
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using ControlSignature = void(CellSetIn, FieldInNeighborhood, FieldIn, FieldOut, FieldOut);
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using ExecutionSignature = void(_2, _3, Boundary, _4, _5);
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using InputDomain = _1;
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ImageDifferenceNeighborhood(const vtkm::IdComponent& radius, const vtkm::FloatDefault& threshold)
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: ShiftRadius(radius)
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, Threshold(threshold)
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{
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}
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template <typename InputFieldPortalType>
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VTKM_EXEC void operator()(
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const vtkm::exec::FieldNeighborhood<InputFieldPortalType>& primaryNeighborhood,
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const typename InputFieldPortalType::ValueType& secondary,
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const vtkm::exec::BoundaryState& boundary,
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typename InputFieldPortalType::ValueType& diff,
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vtkm::FloatDefault& diffThreshold) const
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{
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using T = typename InputFieldPortalType::ValueType;
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auto minIndices = boundary.MinNeighborIndices(this->ShiftRadius);
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auto maxIndices = boundary.MaxNeighborIndices(this->ShiftRadius);
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T minPixelDiff;
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vtkm::FloatDefault minPixelDiffThreshold = 10000.0f;
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for (vtkm::IdComponent i = minIndices[0]; i <= maxIndices[0]; i++)
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{
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for (vtkm::IdComponent j = minIndices[1]; j <= maxIndices[1]; j++)
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{
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for (vtkm::IdComponent k = minIndices[2]; k <= maxIndices[2]; k++)
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{
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diff = vtkm::Abs(primaryNeighborhood.Get(i, j, k) - secondary);
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diffThreshold = static_cast<vtkm::FloatDefault>(vtkm::Magnitude(diff));
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if (diffThreshold < this->Threshold)
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{
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return;
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}
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if (diffThreshold < minPixelDiffThreshold)
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{
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minPixelDiffThreshold = diffThreshold;
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minPixelDiff = diff;
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}
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}
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}
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}
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diff = minPixelDiff;
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diffThreshold = minPixelDiffThreshold;
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}
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private:
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vtkm::IdComponent ShiftRadius;
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vtkm::FloatDefault Threshold;
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};
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class ImageDifference : public vtkm::worklet::WorkletMapField
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{
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public:
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using ControlSignature = void(FieldIn, FieldIn, FieldOut, FieldOut);
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using ExecutionSignature = void(_1, _2, _3, _4);
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using InputDomain = _1;
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ImageDifference() = default;
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template <typename T, vtkm::IdComponent Size>
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VTKM_EXEC void operator()(const vtkm::Vec<T, Size>& primary,
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const vtkm::Vec<T, Size>& secondary,
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vtkm::Vec<T, Size>& diff,
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vtkm::FloatDefault& diffThreshold) const
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{
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diff = vtkm::Abs(primary - secondary);
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diffThreshold = static_cast<vtkm::FloatDefault>(vtkm::Magnitude(diff));
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}
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};
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} // vtkm::worklet
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} // vtkm
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#endif // vtk_m_worklet_ImageDifference_h
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