101 lines
3.4 KiB
C
101 lines
3.4 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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// 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_WarpScalar_h
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#define vtk_m_worklet_WarpScalar_h
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/DeviceAdapter.h>
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#include <vtkm/worklet/DispatcherMapField.h>
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#include <vtkm/worklet/WorkletMapField.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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// A functor that modify points by moving points along point normals by the scalar
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// amount times the scalar factor. It's a VTK-m version of the vtkWarpScalar in VTK.
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// Useful for creating carpet or x-y-z plots.
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// It doesn't modify the point coordinates, but creates a new point coordinates
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// that have been warped.
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class WarpScalar
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{
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public:
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class WarpScalarImp : public vtkm::worklet::WorkletMapField
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{
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public:
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using ControlSignature = void(FieldIn<Vec3>, FieldIn<Vec3>, FieldIn<Scalar>, FieldOut<Vec3>);
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using ExecutionSignature = void(_1, _2, _3, _4);
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VTKM_CONT
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WarpScalarImp(vtkm::FloatDefault scaleAmount)
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: ScaleAmount(scaleAmount)
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{
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}
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VTKM_EXEC
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void operator()(const vtkm::Vec<vtkm::FloatDefault, 3>& point,
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const vtkm::Vec<vtkm::FloatDefault, 3>& normal,
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const vtkm::FloatDefault& scaleFactor,
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vtkm::Vec<vtkm::FloatDefault, 3>& result) const
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{
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result = point + this->ScaleAmount * scaleFactor * normal;
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}
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template <typename T1, typename T2, typename T3>
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VTKM_EXEC void operator()(const vtkm::Vec<T1, 3>& point,
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const vtkm::Vec<T2, 3>& normal,
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const T3& scaleFactor,
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vtkm::Vec<T1, 3>& result) const
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{
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result = point + static_cast<T1>(this->ScaleAmount * scaleFactor) * normal;
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}
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private:
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vtkm::FloatDefault ScaleAmount;
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};
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// Execute the WarpScalar worklet given the points, vector and a scale factor.
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// Scale factor can differs per point.
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template <typename PointType,
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typename NormalType,
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typename ScaleFactorType,
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typename ResultType,
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typename ScaleAmountType,
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typename DeviceAdapter>
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void Run(PointType point,
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NormalType normal,
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ScaleFactorType scaleFactor,
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ScaleAmountType scale,
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ResultType warpedPoint,
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DeviceAdapter vtkmNotUsed(adapter))
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{
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WarpScalarImp warpScalarImp(scale);
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vtkm::worklet::DispatcherMapField<WarpScalarImp, DeviceAdapter> dispatcher(warpScalarImp);
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dispatcher.Invoke(point, normal, scaleFactor, warpedPoint);
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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_WarpScalar_h
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