Logo ROOT  
Reference Guide
 
Loading...
Searching...
No Matches
feynman.C File Reference

Detailed Description

View in nbviewer Open in SWAN
Draw Feynman diagrams.

void feynman()
{
TCanvas *c1 = new TCanvas("c1", "A canvas", 10,10, 600, 300);
c1->Range(0, 0, 140, 60);
Int_t linsav = gStyle->GetLineWidth();
TLatex t;
t.SetTextAlign(22);
t.SetTextSize(0.1);
TLine * l;
l = new TLine(10, 10, 30, 30); l->Draw();
l = new TLine(10, 50, 30, 30); l->Draw();
TCurlyArc *ginit = new TCurlyArc(30, 30, 12.5*sqrt(2), 135, 225);
ginit->SetWavy();
ginit->Draw();
t.DrawLatex(7,6,"e^{-}");
t.DrawLatex(7,55,"e^{+}");
t.DrawLatex(7,30,"#gamma");
TCurlyLine *Gamma = new TCurlyLine(30, 30, 55, 30);
Gamma->SetWavy();
Gamma->Draw();
t.DrawLatex(42.5,37.7,"#gamma");
TArc *a = new TArc(70, 30, 15);
a->Draw();
t.DrawLatex(55, 45,"#bar{q}");
t.DrawLatex(85, 15,"q");
TCurlyLine *gluon = new TCurlyLine(70, 45, 70, 15);
gluon->Draw();
t.DrawLatex(77.5,30,"g");
TCurlyLine *z0 = new TCurlyLine(85, 30, 110, 30);
z0->SetWavy();
z0->Draw();
t.DrawLatex(100, 37.5,"Z^{0}");
l = new TLine(110, 30, 130, 10); l->Draw();
l = new TLine(110, 30, 130, 50); l->Draw();
TCurlyArc *gluon1 = new TCurlyArc(110, 30, 12.5*sqrt(2), 315, 45);
gluon1->Draw();
t.DrawLatex(135,6,"#bar{q}");
t.DrawLatex(135,55,"q");
t.DrawLatex(135,30,"g");
c1->Update();
gStyle->SetLineWidth(linsav);
}
#define a(i)
Definition RSha256.hxx:99
int Int_t
Definition RtypesCore.h:45
R__EXTERN TStyle * gStyle
Definition TStyle.h:414
Create an Arc.
Definition TArc.h:26
virtual Width_t GetLineWidth() const
Return the line width.
Definition TAttLine.h:35
virtual void SetLineWidth(Width_t lwidth)
Set the line width.
Definition TAttLine.h:43
virtual void SetTextAlign(Short_t align=11)
Set the text alignment.
Definition TAttText.h:42
virtual void SetTextSize(Float_t tsize=1)
Set the text size.
Definition TAttText.h:47
The Canvas class.
Definition TCanvas.h:23
Implements curly or wavy arcs used to draw Feynman diagrams.
Definition TCurlyArc.h:16
Implements curly or wavy polylines used to draw Feynman diagrams.
Definition TCurlyLine.h:19
virtual void SetWavy()
Set wavy.
To draw Mathematical Formula.
Definition TLatex.h:18
TLatex * DrawLatex(Double_t x, Double_t y, const char *text)
Make a copy of this object with the new parameters And copy object attributes.
Definition TLatex.cxx:1928
Use the TLine constructor to create a simple line.
Definition TLine.h:22
virtual void Draw(Option_t *option="")
Default Draw method for all objects.
Definition TObject.cxx:274
void Draw(Option_t *option="") override
Draw this polyline with its current attributes.
return c1
Definition legend1.C:41
static int ginit
Definition rsalib.cxx:256
TLine l
Definition textangle.C:4
Author
Otto Schaile

Definition in file feynman.C.