// @(#)root/graf:$Id$
// Author: Rene Brun   12/12/94

 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *

#ifndef ROOT_TPolyLine
#define ROOT_TPolyLine

//                                                                      //
// TPolyLine                                                            //
//                                                                      //
// A PolyLine.                                                          //
//                                                                      //

#ifndef ROOT_TString
#include "TString.h"
#ifndef ROOT_TObject
#include "TObject.h"
#ifndef ROOT_TAttLine
#include "TAttLine.h"
#ifndef ROOT_TAttFill
#include "TAttFill.h"

class TCollection;

class TPolyLine : public TObject, public TAttLine, public TAttFill {

   Int_t        fN;            //Number of points
   Int_t        fLastPoint;    //The index of the last filled point
   Double_t    *fX;            //[fN] Array of X coordinates
   Double_t    *fY;            //[fN] Array of Y coordinates
   TString      fOption;       //options

   TPolyLine& operator=(const TPolyLine&);

   // TPolyLine status bits
   enum { kPolyLineNDC = BIT(14) };

   TPolyLine(Int_t n, Option_t *option="");
   TPolyLine(Int_t n, Float_t *x, Float_t *y, Option_t *option="");
   TPolyLine(Int_t n, Double_t *x, Double_t *y, Option_t *option="");
   TPolyLine(const TPolyLine &polyline);
   virtual ~TPolyLine();

   virtual void    Copy(TObject &polyline) const;
   virtual Int_t   DistancetoPrimitive(Int_t px, Int_t py);
   virtual void    Draw(Option_t *option="");
   virtual void    DrawPolyLine(Int_t n, Double_t *x, Double_t *y, Option_t *option="");
   virtual void    ExecuteEvent(Int_t event, Int_t px, Int_t py);
   virtual Int_t   GetLastPoint() const { return fLastPoint;}
   Int_t           GetN() const {return fN;}
   Double_t       *GetX() const {return fX;}
   Double_t       *GetY() const {return fY;}
   Option_t        *GetOption() const {return fOption.Data();}
   virtual void    ls(Option_t *option="") const;
   virtual Int_t   Merge(TCollection *list);
   virtual void    Paint(Option_t *option="");
   virtual void    PaintPolyLine(Int_t n, Double_t *x, Double_t *y, Option_t *option="");
   virtual void    PaintPolyLineNDC(Int_t n, Double_t *x, Double_t *y, Option_t *option="");
   virtual void    Print(Option_t *option="") const;
   virtual void    SavePrimitive(std::ostream &out, Option_t *option = "");
   virtual void    SetNDC(Bool_t isNDC=kTRUE);
   virtual Int_t   SetNextPoint(Double_t x, Double_t y); // *MENU*
   virtual void    SetOption(Option_t *option="") {fOption = option;}
   virtual void    SetPoint(Int_t point, Double_t x, Double_t y); // *MENU*
   virtual void    SetPolyLine(Int_t n);
   virtual void    SetPolyLine(Int_t n, Float_t *x, Float_t *y, Option_t *option="");
   virtual void    SetPolyLine(Int_t n, Double_t *x, Double_t *y3, Option_t *option="");
   virtual Int_t   Size() const {return fLastPoint+1;}

   ClassDef(TPolyLine,3)  //A PolyLine