vtkConnectivityFilter.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkConnectivityFilter.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 vtkConnectivityFilter_h
#define vtkConnectivityFilter_h
 
#include "vtkFiltersCoreModule.h" // For export macro
#include "vtkUnstructuredGridAlgorithm.h"
 
#define VTK_EXTRACT_POINT_SEEDED_REGIONS 1
#define VTK_EXTRACT_CELL_SEEDED_REGIONS 2
#define VTK_EXTRACT_SPECIFIED_REGIONS 3
#define VTK_EXTRACT_LARGEST_REGION 4
#define VTK_EXTRACT_ALL_REGIONS 5
#define VTK_EXTRACT_CLOSEST_POINT_REGION 6
 
class vtkDataArray;
class vtkFloatArray;
class vtkIdList;
class vtkIdTypeArray;
class vtkIntArray;
 
class VTKFILTERSCORE_EXPORT vtkConnectivityFilter : public vtkUnstructuredGridAlgorithm
{
public:
  vtkTypeMacro(vtkConnectivityFilter,vtkUnstructuredGridAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);
 
  static vtkConnectivityFilter *New();
 
 
  vtkSetMacro(ScalarConnectivity,int);
  vtkGetMacro(ScalarConnectivity,int);
  vtkBooleanMacro(ScalarConnectivity,int);
 
 
  vtkSetVector2Macro(ScalarRange,double);
  vtkGetVector2Macro(ScalarRange,double);
 
 
  vtkSetClampMacro(ExtractionMode,int,
            VTK_EXTRACT_POINT_SEEDED_REGIONS,VTK_EXTRACT_CLOSEST_POINT_REGION);
  vtkGetMacro(ExtractionMode,int);
  void SetExtractionModeToPointSeededRegions()
    {this->SetExtractionMode(VTK_EXTRACT_POINT_SEEDED_REGIONS);};
  void SetExtractionModeToCellSeededRegions()
    {this->SetExtractionMode(VTK_EXTRACT_CELL_SEEDED_REGIONS);};
  void SetExtractionModeToLargestRegion()
    {this->SetExtractionMode(VTK_EXTRACT_LARGEST_REGION);};
  void SetExtractionModeToSpecifiedRegions()
    {this->SetExtractionMode(VTK_EXTRACT_SPECIFIED_REGIONS);};
  void SetExtractionModeToClosestPointRegion()
    {this->SetExtractionMode(VTK_EXTRACT_CLOSEST_POINT_REGION);};
  void SetExtractionModeToAllRegions()
    {this->SetExtractionMode(VTK_EXTRACT_ALL_REGIONS);};
  const char *GetExtractionModeAsString();
 
  void InitializeSeedList();
 
  void AddSeed(vtkIdType id);
 
  void DeleteSeed(vtkIdType id);
 
  void InitializeSpecifiedRegionList();
 
  void AddSpecifiedRegion(int id);
 
  void DeleteSpecifiedRegion(int id);
 
 
  vtkSetVector3Macro(ClosestPoint,double);
  vtkGetVectorMacro(ClosestPoint,double,3);
 
  int GetNumberOfExtractedRegions();
 
 
  vtkSetMacro(ColorRegions,int);
  vtkGetMacro(ColorRegions,int);
  vtkBooleanMacro(ColorRegions,int);
 
 
  vtkSetMacro(OutputPointsPrecision,int);
  vtkGetMacro(OutputPointsPrecision,int);
 
protected:
  vtkConnectivityFilter();
  ~vtkConnectivityFilter();
 
  // Usual data generation method
  virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
  virtual int FillInputPortInformation(int port, vtkInformation *info);
 
  int ColorRegions; //boolean turns on/off scalar gen for separate regions
  int ExtractionMode; //how to extract regions
  int OutputPointsPrecision;
  vtkIdList *Seeds; //id's of points or cells used to seed regions
  vtkIdList *SpecifiedRegionIds; //regions specified for extraction
  vtkIdTypeArray *RegionSizes; //size (in cells) of each region extracted
 
  double ClosestPoint[3];
 
  int ScalarConnectivity;
  double ScalarRange[2];
 
  void TraverseAndMark(vtkDataSet *input);
 
private:
  // used to support algorithm execution
  vtkFloatArray *CellScalars;
  vtkIdList *NeighborCellPointIds;
  vtkIdType *Visited;
  vtkIdType *PointMap;
  vtkIdTypeArray *NewScalars;
  vtkIdTypeArray *NewCellScalars;
  vtkIdType RegionNumber;
  vtkIdType PointNumber;
  vtkIdType NumCellsInRegion;
  vtkDataArray *InScalars;
  vtkIdList *Wave;
  vtkIdList *Wave2;
  vtkIdList *PointIds;
  vtkIdList *CellIds;
private:
  vtkConnectivityFilter(const vtkConnectivityFilter&);  // Not implemented.
  void operator=(const vtkConnectivityFilter&);  // Not implemented.
};
 
 
inline const char *vtkConnectivityFilter::GetExtractionModeAsString(void)
{
  if ( this->ExtractionMode == VTK_EXTRACT_POINT_SEEDED_REGIONS )
    {
    return "ExtractPointSeededRegions";
    }
  else if ( this->ExtractionMode == VTK_EXTRACT_CELL_SEEDED_REGIONS )
    {
    return "ExtractCellSeededRegions";
    }
  else if ( this->ExtractionMode == VTK_EXTRACT_SPECIFIED_REGIONS )
    {
    return "ExtractSpecifiedRegions";
    }
  else if ( this->ExtractionMode == VTK_EXTRACT_ALL_REGIONS )
    {
    return "ExtractAllRegions";
    }
  else if ( this->ExtractionMode == VTK_EXTRACT_CLOSEST_POINT_REGION )
    {
    return "ExtractClosestPointRegion";
    }
  else
    {
    return "ExtractLargestRegion";
    }
}
 
#endif