mirror of
https://gitlab.kitware.com/vtk/vtk-m
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115 lines
3.9 KiB
C++
115 lines
3.9 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 2019 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2019 UT-Battelle, LLC.
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// Copyright 2019 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 vtkm_m_worklet_OrientNormals_h
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#define vtkm_m_worklet_OrientNormals_h
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#include <vtkm/Types.h>
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#include <vtkm/cont/Algorithm.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/ArrayHandleTransform.h>
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#include <vtkm/worklet/OrientCellNormals.h>
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#include <vtkm/worklet/OrientPointAndCellNormals.h>
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#include <vtkm/worklet/OrientPointNormals.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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///
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/// Orients normals to point outside of the dataset. This requires a closed
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/// manifold surface or else the behavior is undefined. This requires an
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/// unstructured cellset as input.
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///
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class OrientNormals
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{
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public:
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template <typename CellSetType,
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typename CoordsCompType,
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typename CoordsStorageType,
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typename CellNormalCompType,
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typename CellNormalStorageType>
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VTKM_CONT static void RunCellNormals(
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const CellSetType& cells,
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const vtkm::cont::ArrayHandle<vtkm::Vec<CoordsCompType, 3>, CoordsStorageType>& coords,
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vtkm::cont::ArrayHandle<vtkm::Vec<CellNormalCompType, 3>, CellNormalStorageType>& cellNormals)
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{
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OrientCellNormals::Run(cells, coords, cellNormals);
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}
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template <typename CellSetType,
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typename CoordsCompType,
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typename CoordsStorageType,
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typename PointNormalCompType,
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typename PointNormalStorageType>
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VTKM_CONT static void RunPointNormals(
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const CellSetType& cells,
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const vtkm::cont::ArrayHandle<vtkm::Vec<CoordsCompType, 3>, CoordsStorageType>& coords,
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vtkm::cont::ArrayHandle<vtkm::Vec<PointNormalCompType, 3>, PointNormalStorageType>&
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pointNormals)
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{
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OrientPointNormals::Run(cells, coords, pointNormals);
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}
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template <typename CellSetType,
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typename CoordsCompType,
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typename CoordsStorageType,
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typename PointNormalCompType,
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typename PointNormalStorageType,
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typename CellNormalCompType,
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typename CellNormalStorageType>
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VTKM_CONT static void RunPointAndCellNormals(
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const CellSetType& cells,
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const vtkm::cont::ArrayHandle<vtkm::Vec<CoordsCompType, 3>, CoordsStorageType>& coords,
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vtkm::cont::ArrayHandle<vtkm::Vec<PointNormalCompType, 3>, PointNormalStorageType>&
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pointNormals,
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vtkm::cont::ArrayHandle<vtkm::Vec<CellNormalCompType, 3>, CellNormalStorageType>& cellNormals)
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{
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OrientPointAndCellNormals::Run(cells, coords, pointNormals, cellNormals);
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}
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struct NegateFunctor
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{
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template <typename T>
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VTKM_EXEC_CONT T operator()(const T& val) const
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{
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return -val;
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}
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};
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///
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/// Reverse the normals to point in the opposite direction.
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///
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template <typename NormalCompType, typename NormalStorageType>
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VTKM_CONT static void RunFlipNormals(
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vtkm::cont::ArrayHandle<vtkm::Vec<NormalCompType, 3>, NormalStorageType>& normals)
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{
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const auto flippedAlias = vtkm::cont::make_ArrayHandleTransform(normals, NegateFunctor{});
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vtkm::cont::Algorithm::Copy(flippedAlias, normals);
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}
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};
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}
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} // end namespace vtkm::worklet
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#endif // vtkm_m_worklet_OrientNormals_h
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