BFLVorOperator.h

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//                                                                   //
//authors: Costas Andreopoulos, Elias Athanasopoulos, George Tzanakos//
//                Physics Department, University of Athens           //
//                                                  October 28, 1999 //

#ifndef BFLVOROPERATOR_H
#define BFLVOROPERATOR_H

#include <iostream>
#include <TMath.h>
#include "TVector2.h"
#include "TObjArray.h"

//#include "BField/TIntList.h"
//#include "BField/BFLNode.h"

class TIntList;
class BFLNode;
class BFLWingedEdge;
class BFLVtx;
class BFLPolyg;
class BFLEdge;

class BFLVorOperator: public TObject
{
public:

  BFLVorOperator() { }
  BFLVorOperator(BFLWingedEdge * vor);
  ~BFLVorOperator();
  
  TIntList * RetrieveEdgesIncidentToVtx(Int_t vtx) const;
  TIntList * RetrievePolygonsIncidentToVtx(Int_t vtx) const;
  TIntList * RetrieveEdgesSurrPolygon(Int_t poly) const;
  TIntList * RetrieveVtxSurrPolygon(Int_t poly) const;

  Int_t IsInTheCircle(TObjArray * CirclePoints, BFLNode * point) const;
  BFLNode VtxPosition(TObjArray * PointsOnCircle) const;
  BFLNode FindNewVtx(Int_t EdgeID) const;
  Int_t FindCurrentPolygon(Int_t GuessedID = -1) const;
  Int_t MoveToNextPolygon(Int_t PolygID, Int_t EdgeID) const;
  Bool_t EdgeHasNewVtx(Int_t EdgeID) const;
  Bool_t EdgeIsInsideNewPolygon(Int_t EdgeID) const;
  Bool_t VtxIsInsideNewPolyg(Int_t VtxID) const;
  void ResetVtxCache(void);
  Float_t GeneratorsDist(Int_t igen, Int_t jgen) const;  
  Float_t DistanceFrom(Int_t igen) const;
  Int_t GetFirstIntersectEdge(void) const;
  Int_t GetNextIntersectEdge(Int_t PrEdgeID) const;
  Int_t Clockwise(BFLNode * nA, BFLNode * nB, BFLNode * nC) const;

  virtual void SetCurrentPolygID(Int_t pid) { fCurrentPolygID = pid; }
  virtual Int_t GetCurrentPolygID(void) const { return fCurrentPolygID; }

  virtual void SetCurrentGen(BFLNode * gen) { fCurrentGen = gen; }  
  virtual BFLNode * GetCurrentGen(void) const { return fCurrentGen; }
          
private:
  Int_t fCurrentPolygID;
  BFLNode * fCurrentGen;  
  TObjArray * fGenerators;
  BFLWingedEdge * fVor;
  TIntList * fInVtxCache;
  TIntList * fOutVtxCache;

  ClassDef(BFLVorOperator,0)   // Class operating on Winged Edge structure
}; 

#endif

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