vtkEdgeTable.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkEdgeTable.h,v $

  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 __vtkEdgeTable_h
#define __vtkEdgeTable_h

#include "vtkObject.h"

class vtkIdList;
class vtkPoints;
class vtkVoidArray;

class VTK_COMMON_EXPORT vtkEdgeTable : public vtkObject
{
public:
  static vtkEdgeTable *New();

  vtkTypeRevisionMacro(vtkEdgeTable,vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);

  void Initialize();

  int InitEdgeInsertion(vtkIdType numPoints, int storeAttributes=0);

  vtkIdType InsertEdge(vtkIdType p1, vtkIdType p2);

  void InsertEdge(vtkIdType p1, vtkIdType p2, vtkIdType attributeId);

  void InsertEdge(vtkIdType p1, vtkIdType p2, void* ptr);

  vtkIdType IsEdge(vtkIdType p1, vtkIdType p2);

  void IsEdge(vtkIdType p1, vtkIdType p2, void* &ptr);

  int InitPointInsertion(vtkPoints *newPts, vtkIdType estSize);


  int InsertUniquePoint(vtkIdType p1, vtkIdType p2, double x[3],
                        vtkIdType &ptId);


  vtkGetMacro(NumberOfEdges, vtkIdType);

  void InitTraversal();

  vtkIdType GetNextEdge(vtkIdType &p1, vtkIdType &p2);

  int GetNextEdge(vtkIdType &p1, vtkIdType &p2, void* &ptr);

  void Reset();

protected:
  vtkEdgeTable();
  ~vtkEdgeTable();

  vtkIdList **Table;
  vtkIdType TableMaxId; //maximum point id inserted
  vtkIdType TableSize;  //allocated size of table
  int Position[2];
  int Extend;
  vtkIdType NumberOfEdges;
  vtkPoints *Points; //support point insertion

  int StoreAttributes; //==0:no attributes stored;==1:vtkIdType;==2:void*
  vtkIdList **Attributes; //used to store IdTypes attributes
  vtkVoidArray **PointerAttributes; //used to store void* pointers

  vtkIdList **Resize(vtkIdType size);

private:
  vtkEdgeTable(const vtkEdgeTable&);  // Not implemented.
  void operator=(const vtkEdgeTable&);  // Not implemented.
};

#endif

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