vtkPolyDataConnectivityFilter.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkPolyDataConnectivityFilter.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 vtkPolyDataConnectivityFilter_h
#define vtkPolyDataConnectivityFilter_h
 
#include "vtkFiltersCoreModule.h" // For export macro
#include "vtkPolyDataAlgorithm.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 vtkIdList;
class vtkIdTypeArray;
 
class VTKFILTERSCORE_EXPORT vtkPolyDataConnectivityFilter : public vtkPolyDataAlgorithm
{
public:
  vtkTypeMacro(vtkPolyDataConnectivityFilter, vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
 
  vtkGetObjectMacro(RegionSizes, vtkIdTypeArray);
 
  static vtkPolyDataConnectivityFilter* New();
 
 
  vtkSetMacro(ScalarConnectivity, vtkTypeBool);
  vtkGetMacro(ScalarConnectivity, vtkTypeBool);
  vtkBooleanMacro(ScalarConnectivity, vtkTypeBool);
 
 
  vtkSetMacro(FullScalarConnectivity, vtkTypeBool);
  vtkGetMacro(FullScalarConnectivity, vtkTypeBool);
  vtkBooleanMacro(FullScalarConnectivity, vtkTypeBool);
 
 
  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(int id);
 
  void DeleteSeed(int id);
 
  void InitializeSpecifiedRegionList();
 
  void AddSpecifiedRegion(int id);
 
  void DeleteSpecifiedRegion(int id);
 
 
  vtkSetVector3Macro(ClosestPoint, double);
  vtkGetVectorMacro(ClosestPoint, double, 3);
 
  int GetNumberOfExtractedRegions();
 
 
  vtkSetMacro(ColorRegions, vtkTypeBool);
  vtkGetMacro(ColorRegions, vtkTypeBool);
  vtkBooleanMacro(ColorRegions, vtkTypeBool);
 
 
  vtkSetMacro(MarkVisitedPointIds, vtkTypeBool);
  vtkGetMacro(MarkVisitedPointIds, vtkTypeBool);
  vtkBooleanMacro(MarkVisitedPointIds, vtkTypeBool);
 
 
  vtkGetObjectMacro(VisitedPointIds, vtkIdList);
 
 
  vtkSetMacro(OutputPointsPrecision, int);
  vtkGetMacro(OutputPointsPrecision, int);
 
protected:
  vtkPolyDataConnectivityFilter();
  ~vtkPolyDataConnectivityFilter() override;
 
  // Usual data generation method
  int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
 
  vtkTypeBool ColorRegions;      // boolean turns on/off scalar gen for separate regions
  int ExtractionMode;            // how to extract regions
  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];
 
  vtkTypeBool ScalarConnectivity;
  vtkTypeBool FullScalarConnectivity;
 
  // Does this cell qualify as being scalar connected ?
  int IsScalarConnected(vtkIdType cellId);
 
  double ScalarRange[2];
 
  void TraverseAndMark();
 
  // used to support algorithm execution
  vtkDataArray* CellScalars;
  vtkIdList* NeighborCellPointIds;
  vtkIdType* Visited;
  vtkIdType* PointMap;
  vtkDataArray* NewScalars;
  vtkIdType RegionNumber;
  vtkIdType PointNumber;
  vtkIdType NumCellsInRegion;
  vtkDataArray* InScalars;
  vtkPolyData* Mesh;
  std::vector<vtkIdType> Wave;
  std::vector<vtkIdType> Wave2;
  vtkIdList* PointIds;
  vtkIdList* CellIds;
  vtkIdList* VisitedPointIds;
 
  vtkTypeBool MarkVisitedPointIds;
  int OutputPointsPrecision;
 
private:
  vtkPolyDataConnectivityFilter(const vtkPolyDataConnectivityFilter&) = delete;
  void operator=(const vtkPolyDataConnectivityFilter&) = delete;
};
 
inline const char* vtkPolyDataConnectivityFilter::GetExtractionModeAsString()
{
  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