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
3.0 KiB
C++
89 lines
3.0 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 2017 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2017 UT-Battelle, LLC.
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// Copyright 2017 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_filter_Streamline_h
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#define vtk_m_filter_Streamline_h
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#include <vtkm/filter/FilterDataSetWithField.h>
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#include <vtkm/worklet/ParticleAdvection.h>
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#include <vtkm/worklet/particleadvection/Integrators.h>
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namespace vtkm
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{
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namespace filter
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{
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/// \brief generate streamlines from a vector field.
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/// Takes as input a vector field and seed locations and generates the
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/// paths taken by the seeds through the vector field.
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class Streamline : public vtkm::filter::FilterDataSetWithField<Streamline>
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{
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public:
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VTKM_CONT
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Streamline();
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VTKM_CONT
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void SetStepSize(vtkm::worklet::particleadvection::ScalarType s) { this->StepSize = s; }
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VTKM_CONT
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void SetNumberOfSteps(vtkm::Id n) { this->NumberOfSteps = n; }
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VTKM_CONT
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void SetSeeds(vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::FloatDefault, 3>>& seeds);
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template <typename T, typename StorageType, typename DerivedPolicy>
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VTKM_CONT vtkm::cont::DataSet DoExecute(
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const vtkm::cont::DataSet& input,
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const vtkm::cont::ArrayHandle<vtkm::Vec<T, 3>, StorageType>& field,
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const vtkm::filter::FieldMetadata& fieldMeta,
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const vtkm::filter::PolicyBase<DerivedPolicy>& policy);
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//Map a new field onto the resulting dataset after running the filter
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//this call is only valid
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template <typename T, typename StorageType, typename DerivedPolicy>
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VTKM_CONT bool DoMapField(vtkm::cont::DataSet& result,
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const vtkm::cont::ArrayHandle<T, StorageType>& input,
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const vtkm::filter::FieldMetadata& fieldMeta,
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vtkm::filter::PolicyBase<DerivedPolicy> policy);
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private:
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vtkm::worklet::Streamline Worklet;
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vtkm::worklet::particleadvection::ScalarType StepSize;
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vtkm::Id NumberOfSteps;
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vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::FloatDefault, 3>> Seeds;
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};
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template <>
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class FilterTraits<Streamline>
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{
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public:
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struct TypeListTagStreamline
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: vtkm::ListTagBase<vtkm::Vec<vtkm::Float32, 3>, vtkm::Vec<vtkm::Float64, 3>>
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{
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};
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using InputFieldTypeList = TypeListTagStreamline;
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};
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}
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} // namespace vtkm::filter
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#include <vtkm/filter/Streamline.hxx>
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#endif // vtk_m_filter_Streamline_h
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