vtkPStreamTracer.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkPStreamTracer_h
#define vtkPStreamTracer_h

#include "vtkSmartPointer.h" // This is a leaf node. No need to use PIMPL to avoid compile time penalty.
#include "vtkStreamTracer.h"

VTK_ABI_NAMESPACE_BEGIN
class vtkAbstractInterpolatedVelocityField;
class vtkMultiProcessController;

class PStreamTracerPoint;
class vtkOverlappingAMR;
class AbstractPStreamTracerUtils;

VTK_ABI_NAMESPACE_END
#include "vtkFiltersParallelFlowPathsModule.h" // For export macro

VTK_ABI_NAMESPACE_BEGIN
class VTKFILTERSPARALLELFLOWPATHS_EXPORT vtkPStreamTracer : public vtkStreamTracer
{
public:

  static vtkPStreamTracer* New();
  vtkTypeMacro(vtkPStreamTracer, vtkStreamTracer);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  virtual void SetController(vtkMultiProcessController* controller);
  vtkGetObjectMacro(Controller, vtkMultiProcessController);

protected:
  vtkPStreamTracer();
  ~vtkPStreamTracer() override;

  int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
  int RequestUpdateExtent(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;

  vtkMultiProcessController* Controller;

  int EmptyData;

private:
  vtkPStreamTracer(const vtkPStreamTracer&) = delete;
  void operator=(const vtkPStreamTracer&) = delete;

  void Trace(vtkDataSet* input, int vecType, const char* vecName, PStreamTracerPoint* pt,
    vtkSmartPointer<vtkPolyData>& output, vtkAbstractInterpolatedVelocityField* func,
    int maxCellSize);

  bool TraceOneStep(
    vtkPolyData* traceOut, vtkAbstractInterpolatedVelocityField*, PStreamTracerPoint* pt);

  void Prepend(vtkPolyData* path, vtkPolyData* headh);
  int Rank;
  int NumProcs;

  friend class AbstractPStreamTracerUtils;
  vtkSmartPointer<AbstractPStreamTracerUtils> Utils;
};
VTK_ABI_NAMESPACE_END
#endif