library: libHist #include "TPolyMarker.h"

# TPolyMarker

class description - source file - inheritance tree (.pdf)

## class TPolyMarker : public TObject, public TAttMarker

| Inheritance Chart:

`TObject`

`TAttMarker`

<-

`TPolyMarker`

        public:

                            TPolyMarker()
                            TPolyMarker(Int_t n, Option_t* option = "")
                            TPolyMarker(Int_t n, Float_t* x, Float_t* y, Option_t* option = "")
                            TPolyMarker(Int_t n, Double_t* x, Double_t* y, Option_t* option = "")
                            TPolyMarker(const TPolyMarker& polymarker)
                    virtual ~TPolyMarker()
             static TClass* Class()
               virtual void Copy(TObject& polymarker) const
              virtual Int_t DistancetoPrimitive(Int_t px, Int_t py)
               virtual void Draw(Option_t* option = "")
               virtual void DrawPolyMarker(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
              virtual Int_t GetN() const
          virtual Option_t* GetOption() const
                  Double_t* GetX() const
                  Double_t* GetY() const
            virtual TClass* IsA() const
               virtual void ls(Option_t* option = "") const
              virtual Int_t Merge(TCollection* list)
               TPolyMarker& operator=(const TPolyMarker&)
               virtual void Paint(Option_t* option = "")
               virtual void PaintPolyMarker(Int_t n, Double_t* x, Double_t* y, Option_t* option = "")
               virtual void Print(Option_t* option = "") const
               virtual void SavePrimitive(ofstream& out, Option_t* option)
              virtual Int_t SetNextPoint(Double_t x, Double_t y)
               virtual void SetPoint(Int_t point, Double_t x, Double_t y)
               virtual void SetPolyMarker(Int_t n)
               virtual void SetPolyMarker(Int_t n, Float_t* x, Float_t* y, Option_t* option = "")
               virtual void SetPolyMarker(Int_t n, Double_t* x, Double_t* y, Option_t* option = "")
               virtual void ShowMembers(TMemberInspector& insp, char* parent)
              virtual Int_t Size() const
               virtual void Streamer(TBuffer& b)
                       void StreamerNVirtual(TBuffer& b)

### Data Members

        protected:

              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

## Class Description

      a PolyMarker is defined by an array on N points in a 2-D space.
     At each point x[i], y[i] a marker is drawn.
     Marker attributes are managed by TAttMarker.
     See TMarker for the list of possible marker types.

TPolyMarker(): TObject()

TPolyMarker(Int_t n, Option_t *option) :TObject(), TAttMarker()

TPolyMarker(Int_t n, Float_t *x, Float_t *y, Option_t *option) :TObject(), TAttMarker()

TPolyMarker(Int_t n, Double_t *x, Double_t *y, Option_t *option) :TObject(), TAttMarker()

~TPolyMarker()

TPolyMarker(const TPolyMarker &polymarker) : TObject(polymarker), TAttMarker(polymarker)

void Copy(TObject &obj) const

Int_t DistancetoPrimitive(Int_t px, Int_t py)

    *-*-*-*-*-*-*-*-*Compute distance from point px,py to a polymarker*-*-*-*-*-*
    *-*              ===============================================
      Compute the closest distance of approach from point px,py to each point
      of the polymarker.
      Returns when the distance found is below DistanceMaximum.
      The distance is computed in pixels units.

void Draw(Option_t *option)

void DrawPolyMarker(Int_t n, Double_t *x, Double_t *y, Option_t *)

void ExecuteEvent(Int_t, Int_t, Int_t)

    *-*-*-*-*-*-*-*-*-*-*Execute action corresponding to one event*-*-*-*
    *-*                  =========================================
      This member function must be implemented to realize the action
      corresponding to the mouse click on the object in the window

void ls(Option_t *) const

Int_t Merge(TCollection *li)

     Merge polymarkers in the collection in this polymarker

void Paint(Option_t *option)

void PaintPolyMarker(Int_t n, Double_t *x, Double_t *y, Option_t *option)

void Print(Option_t *) const

void SavePrimitive(ofstream &out, Option_t *option)

     Save primitive as a C++ statement(s) on output stream out

Int_t SetNextPoint(Double_t x, Double_t y)

     Set point following LastPoint to x, y.
     Returns index of the point (new last point).

void SetPoint(Int_t n, Double_t x, Double_t y)

     set point number n
     if n is greater than the current size, the arrays are automatically
     extended

void SetPolyMarker(Int_t n)

     if n <= 0 the current arrays of points are deleted.

void SetPolyMarker(Int_t n, Float_t *x, Float_t *y, Option_t *option)

     if n <= 0 the current arrays of points are deleted.

void SetPolyMarker(Int_t n, Double_t *x, Double_t *y, Option_t *option)

     if n <= 0 the current arrays of points are deleted.

void Streamer(TBuffer &R__b)

    *-*-*-*-*-*-*-*-*Stream a class object*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
    *-*              =========================================

### Inline Functions

                   Int_t GetLastPoint() const
                   Int_t GetN() const
               Option_t* GetOption() const
               Double_t* GetX() const
               Double_t* GetY() const
                   Int_t Size() const
                 TClass* Class()
                 TClass* IsA() const
                    void ShowMembers(TMemberInspector& insp, char* parent)
                    void StreamerNVirtual(TBuffer& b)
            TPolyMarker& operator=(const TPolyMarker&)

Author: Rene Brun 12/12/94
Last update: root/hist:$Name: $:$Id: TPolyMarker.cxx,v 1.16 2005/05/18 12:31:09 brun Exp $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *