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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkParticlePathFilter
* @brief A Parallel Particle tracer for unsteady vector fields
*
* vtkParticlePathFilter is a filter that integrates a vector field to generate particle paths
*
*
* @sa
* vtkParticlePathFilterBase has the details of the algorithms
*/
#ifndef vtkParticlePathFilter_h
#define vtkParticlePathFilter_h
#include "vtkFiltersFlowPathsModule.h" // For export macro
#include "vtkParticleTracerBase.h"
#include "vtkSmartPointer.h" // For Points
#include <functional> // for std::greater
#include <map> // For Paths
#include <queue> // For UnusedIndices
#include <vector> // For Paths
VTK_ABI_NAMESPACE_BEGIN
class vtkPointSet;
class VTKFILTERSFLOWPATHS_EXPORT vtkParticlePathFilter : public vtkParticleTracerBase
{
public:
vtkTypeMacro(vtkParticlePathFilter, vtkParticleTracerBase);
// void PrintSelf(ostream& os, vtkIndent indent) override;
static vtkParticlePathFilter* New();
protected:
vtkParticlePathFilter() = default;
~vtkParticlePathFilter() override = default;
vtkParticlePathFilter(const vtkParticlePathFilter&) = delete;
void operator=(const vtkParticlePathFilter&) = delete;
int Initialize(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
int Execute(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
int Finalize(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
private:
vtkSmartPointer<vtkPointSet> Points;
std::map<vtkIdType, std::vector<vtkIdType>> Paths;
std::priority_queue<vtkIdType, std::vector<vtkIdType>, std::greater<>> UnusedIndices;
};
VTK_ABI_NAMESPACE_END
#endif
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