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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkTemporalPathLineFilter.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef _vtkTemporalPathLineFilter_h
#define _vtkTemporalPathLineFilter_h

#include "vtkFiltersGeneralModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"

class vtkPoints;
class vtkCellArray;
class vtkMergePoints;
class vtkFloatArray;

//BTX
#include "vtkSmartPointer.h" // for memory safety
#include <set>        // Because we want to use it
class ParticleTrail;
class vtkTemporalPathLineFilterInternals;
typedef vtkSmartPointer<ParticleTrail> TrailPointer;
//ETX

class VTKFILTERSGENERAL_EXPORT vtkTemporalPathLineFilter : public vtkPolyDataAlgorithm
{
public:

  static vtkTemporalPathLineFilter *New();
  vtkTypeMacro(vtkTemporalPathLineFilter,vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);


  vtkSetMacro(MaskPoints,int);
  vtkGetMacro(MaskPoints,int);


  vtkSetMacro(MaxTrackLength,unsigned int);
  vtkGetMacro(MaxTrackLength,unsigned int);


  vtkSetStringMacro(IdChannelArray);
  vtkGetStringMacro(IdChannelArray);


  vtkSetVector3Macro(MaxStepDistance,double);
  vtkGetVector3Macro(MaxStepDistance,double);


  vtkSetMacro(KeepDeadTrails,int);
  vtkGetMacro(KeepDeadTrails,int);

  void Flush();

  void SetSelectionConnection(vtkAlgorithmOutput *algOutput);

  void SetSelectionData(vtkDataSet *input);

protected:
   vtkTemporalPathLineFilter();
  ~vtkTemporalPathLineFilter();

  //
  // Make sure the pipeline knows what type we expect as input
  //
  virtual int FillInputPortInformation (int port, vtkInformation* info);
  virtual int FillOutputPortInformation(int port, vtkInformation* info);


  virtual int RequestInformation (vtkInformation *,
                                  vtkInformationVector **,
                                  vtkInformationVector *);
  //
  virtual int RequestData(vtkInformation *request,
                          vtkInformationVector** inputVector,
                          vtkInformationVector* outputVector);

//BTX
  TrailPointer GetTrail(vtkIdType i);
  void IncrementTrail(
    TrailPointer trail, vtkDataSet *input, vtkIdType i);
//ETX
  // internal data variables
  int           NumberOfTimeSteps;
  int           MaskPoints;
  unsigned int  MaxTrackLength;
  unsigned int  LastTrackLength;
  int           FirstTime;
  char         *IdChannelArray;
  double        MaxStepDistance[3];
  double        LatestTime;
  int           KeepDeadTrails;
  int           UsingSelection;
  //
//BTX
  vtkSmartPointer<vtkCellArray>                       PolyLines;
  vtkSmartPointer<vtkCellArray>                       Vertices;
  vtkSmartPointer<vtkPoints>                          LineCoordinates;
  vtkSmartPointer<vtkPoints>                          VertexCoordinates;
  vtkSmartPointer<vtkFloatArray>                      TrailId;
  vtkSmartPointer<vtkTemporalPathLineFilterInternals> Internals;
  std::set<vtkIdType>                              SelectionIds;
//ETX
  //
private:
  vtkTemporalPathLineFilter(const vtkTemporalPathLineFilter&);  // Not implemented.
  void operator=(const vtkTemporalPathLineFilter&);  // Not implemented.
};

#endif