bddad9b386
Now that the dispatcher does its own TryExecute, filters do not need to do that. This change requires all worklets called by filters to be able to execute without knowing the device a priori.
89 lines
2.9 KiB
C++
89 lines
2.9 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 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_WarpVector_h
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#define vtk_m_worklet_WarpVector_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 a vector
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// then timing a scale factor. It's a VTK-m version of the vtkWarpVector in VTK.
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// Useful for showing flow profiles or mechanical deformation.
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// This worklet does not modify the input points but generate new point coordinate
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// instance that has been warped.
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class WarpVector
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{
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public:
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class WarpVectorImp : public vtkm::worklet::WorkletMapField
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{
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public:
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using ControlSignature = void(FieldIn<Vec3>, FieldIn<Vec3>, FieldOut<Vec3>);
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using ExecutionSignature = _3(_1, _2);
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VTKM_CONT
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WarpVectorImp(vtkm::FloatDefault scale)
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: Scale(scale)
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{
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}
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VTKM_EXEC
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vtkm::Vec<vtkm::FloatDefault, 3> operator()(
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const vtkm::Vec<vtkm::FloatDefault, 3>& point,
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const vtkm::Vec<vtkm::FloatDefault, 3>& vector) const
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{
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return point + this->Scale * vector;
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}
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template <typename T>
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VTKM_EXEC vtkm::Vec<T, 3> operator()(const vtkm::Vec<T, 3>& point,
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const vtkm::Vec<T, 3>& vector) const
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{
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return point + static_cast<T>(this->Scale) * vector;
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}
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private:
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vtkm::FloatDefault Scale;
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};
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// Execute the WarpVector worklet given the points, vector and a scale factor.
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// Returns:
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// warped points
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template <typename PointType, typename VectorType, typename ResultType>
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void Run(PointType point, VectorType vector, vtkm::FloatDefault scale, ResultType warpedPoint)
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{
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WarpVectorImp warpVectorImp(scale);
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vtkm::worklet::DispatcherMapField<WarpVectorImp> dispatcher(warpVectorImp);
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dispatcher.Invoke(point, vector, 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_WarpVector_h
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