TCurlyArc


class description - source file - inheritance tree

class TCurlyArc : public TCurlyLine

    private:
protected:
public:
TCurlyArc TCurlyArc() TCurlyArc TCurlyArc(Double_t x1, Double_t y1, Double_t rad, Double_t phimin, Double_t phimax, Double_t tl = .05, Double_t trad = .02) TCurlyArc TCurlyArc(TCurlyArc&) virtual void ~TCurlyArc() virtual void Build() static TClass* Class() virtual Int_t DistancetoPrimitive(Int_t px, Int_t py) virtual void ExecuteEvent(Int_t event, Int_t px, Int_t py) Double_t GetPhimax() const Double_t GetPhimin() const Double_t GetRadius() const virtual TClass* IsA() const virtual void SavePrimitive(ofstream& out, Option_t*) virtual void SetCenter(Double_t x1, Double_t y1) virtual void SetPhimax(Double_t phimax) virtual void SetPhimin(Double_t phimin) virtual void SetRadius(Double_t radius) virtual void ShowMembers(TMemberInspector& insp, char* parent) virtual void Streamer(TBuffer& b) void StreamerNVirtual(TBuffer& b)

Data Members

    private:
Double_t fR1 Radius of arc Double_t fPhimin start phi (degrees) Double_t fPhimax end phi (degrees) Double_t fTheta used internally protected:
public:

Class Description

 This class implements curly or wavy arcs typically used to draw Feynman diagrams.
 Amplitudes and wavelengths may be specified in the constructors,
 via commands or interactively from popup menus.
 The class make use of TCurlyLine by inheritance, ExecuteEvent methods
 are highly inspired from the methods used in TPolyLine and TArc.
 The picture below has been generated by the tutorial feynman.

/*

*/

________________________________________________________________________

TCurlyArc(Double_t x1, Double_t y1, Double_t rad, Double_t phimin, Double_t phimax, Double_t tl, Double_t trad) : fR1(rad), fPhimin(phimin),fPhimax(phimax)
 create a new TCurlyarc with center (x1, y1) and radius rad.
 The wavelength and amplitude are given in percent of the line length
 phimin and phimax are given in degrees.

void Build()
*-*-*-*-*-*-*-*-*-*-*Create a curly (Gluon) or wavy (Gamma) arc*-*-*-*-*-*
*-*                  ===========================================

Int_t DistancetoPrimitive(Int_t px, Int_t py)
*-*-*-*-*-*-*-*-*-*-*Compute distance from point px,py to an arc*-*-*-*
*-*                  ===========================================
  Compute the closest distance of approach from point px,py to this arc.
  The distance is computed in pixels units.


void ExecuteEvent(Int_t event, Int_t px, Int_t py)
*-*-*-*-*-*-*-*-*-*-*Execute action corresponding to one event*-*-*-*
*-*                  =========================================
  This member function is called when a TCurlyArc is clicked with the locator

  If Left button clicked on one of the line end points, this point
     follows the cursor until button is released.

  if Middle button clicked, the line is moved parallel to itself
     until the button is released.


void SavePrimitive(ofstream &out, Option_t *)
 Save primitive as a C++ statement(s) on output stream out

void SetCenter(Double_t x, Double_t y)

void SetRadius(Double_t x)

void SetPhimin(Double_t x)

void SetPhimax(Double_t x)



Inline Functions


          TCurlyArc TCurlyArc(Double_t x1, Double_t y1, Double_t rad, Double_t phimin, Double_t phimax, Double_t tl = .05, Double_t trad = .02)
           Double_t GetRadius() const
           Double_t GetPhimin() const
           Double_t GetPhimax() const
            TClass* Class()
            TClass* IsA() const
               void ShowMembers(TMemberInspector& insp, char* parent)
               void Streamer(TBuffer& b)
               void StreamerNVirtual(TBuffer& b)
          TCurlyArc TCurlyArc(TCurlyArc&)
               void ~TCurlyArc()


Author: Otto Schaile 20/11/99
Last update: root/graf:$Name: $:$Id: TCurlyArc.cxx,v 1.2 2000/06/13 10:47:27 brun Exp $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *


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