doc/v626/feynman_8C.html

void feynman()

{

   TCanvas *c1 = new TCanvas("c1", "A canvas", 10,10, 600, 300);

   c1->Range(0, 0, 140, 60);

   Int_t linsav = gStyle->GetLineWidth();

   gStyle->SetLineWidth(3);

   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);

}

a
#define a(i)
Definition RSha256.hxx:99

Int_t
int Int_t
Definition RtypesCore.h:45

gStyle
R__EXTERN TStyle * gStyle
Definition TStyle.h:413

TArc
Create an Arc.
Definition TArc.h:26

TAttLine::GetLineWidth
virtual Width_t GetLineWidth() const
Return the line width.
Definition TAttLine.h:35

TAttLine::SetLineWidth
virtual void SetLineWidth(Width_t lwidth)
Set the line width.
Definition TAttLine.h:43

TAttText::SetTextAlign
virtual void SetTextAlign(Short_t align=11)
Set the text alignment.
Definition TAttText.h:42

TAttText::SetTextSize
virtual void SetTextSize(Float_t tsize=1)
Set the text size.
Definition TAttText.h:47

TCanvas
The Canvas class.
Definition TCanvas.h:23

TCurlyArc
Implements curly or wavy arcs used to draw Feynman diagrams.
Definition TCurlyArc.h:18

TCurlyLine
Implements curly or wavy polylines used to draw Feynman diagrams.
Definition TCurlyLine.h:19

TCurlyLine::SetWavy
virtual void SetWavy()
Set wavy.
Definition TCurlyLine.cxx:369

TLatex
To draw Mathematical Formula.
Definition TLatex.h:18

TLatex::DrawLatex
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:1941

TLine
Use the TLine constructor to create a simple line.
Definition TLine.h:22

TPolyLine::Draw
virtual void Draw(Option_t *option="")
Draw this polyline with its current attributes.
Definition TPolyLine.cxx:228

c1
return c1
Definition legend1.C:41

ginit
static int ginit
Definition rsalib.cxx:256

l
auto * l
Definition textangle.C:4