vtkParticlePathFilter.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkParticlePathFilter_h
#define vtkParticlePathFilter_h
 
#include "vtkFiltersFlowPathsModule.h" // For export macro
#include "vtkParticleTracerBase.h"
#include "vtkSmartPointer.h" // For protected ivars.
#include <vector>            // For protected ivars
 
VTK_ABI_NAMESPACE_BEGIN
class VTKFILTERSFLOWPATHS_EXPORT ParticlePathFilterInternal
{
public:
  ParticlePathFilterInternal()
    : Filter(nullptr)
  {
  }
  void Initialize(vtkParticleTracerBase* filter);
  virtual ~ParticlePathFilterInternal() = default;
  virtual int OutputParticles(vtkPolyData* particles);
  void SetClearCache(bool clearCache) { this->ClearCache = clearCache; }
  bool GetClearCache() { return this->ClearCache; }
  void Finalize();
  void Reset();
 
private:
  vtkParticleTracerBase* Filter;
  // Paths doesn't seem to work properly. it is meant to make connecting lines
  // for the particles
  std::vector<vtkSmartPointer<vtkIdList>> Paths;
  bool ClearCache; // false by default
};
 
class VTKFILTERSFLOWPATHS_EXPORT vtkParticlePathFilter : public vtkParticleTracerBase
{
public:
  vtkTypeMacro(vtkParticlePathFilter, vtkParticleTracerBase);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  static vtkParticlePathFilter* New();
 
protected:
  vtkParticlePathFilter();
  ~vtkParticlePathFilter() override;
  vtkParticlePathFilter(const vtkParticlePathFilter&) = delete;
  void operator=(const vtkParticlePathFilter&) = delete;
 
  void ResetCache() override;
  int OutputParticles(vtkPolyData* particles) override;
  void InitializeExtraPointDataArrays(vtkPointData* outputPD) override;
  void SetToExtraPointDataArrays(
    vtkIdType particleId, vtkParticleTracerBaseNamespace::ParticleInformation&) override;
 
  void Finalize() override;
 
  //
  // Store any information we need in the output and fetch what we can
  // from the input
  //
  int RequestInformation(vtkInformation* request, vtkInformationVector** inputVector,
    vtkInformationVector* outputVector) override;
 
  ParticlePathFilterInternal It;
 
private:
  vtkDoubleArray* SimulationTime;
  vtkIntArray* SimulationTimeStep;
};
 
VTK_ABI_NAMESPACE_END
#endif