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Reference Guide
gltf3.C File Reference

Detailed Description

Draws the Klein bottle. Klein bottle is closed non-orientable surface that has no inside or outside. TF3 can be drawn in several styles:

  • default - like surface4
  • kMaple0 - very nice colours
  • kMaple1 - nice colours and outlines
  • kMaple2 - nice colour outlines. To switch between them, you can press 's' key.
void gltf3()
{
TCanvas *cnv = new TCanvas("gltf3", "TF3: Klein bottle", 200, 10, 600, 600);
TPaveLabel *title = new TPaveLabel(0.04, 0.86, 0.96, 0.98,
"\"gl\" option for TF3. Select plot and press 's' to change the color.");
title->SetFillColor(32);
title->Draw();
TPad *tf3Pad = new TPad("box", "box", 0.04, 0.04, 0.96, 0.8);
tf3Pad->Draw();
TFormula f1 = TFormula("f1", "x*x + y*y + z*z + 2*y - 1");
TFormula f2 = TFormula("f2", "x*x + y*y + z*z - 2*y - 1");
// Klein bottle with cut top&bottom parts
// The Klein bottle is a closed non-orientable surface that has no
// inside or outside.
TF3 *tf3 = new TF3("Klein Bottle","f1*(f2*f2-8*z*z) + 16*x*z*f2",
-3.5, 3.5, -3.5, 3.5, -2.5, 2.5);
tf3->SetFillColor(kRed);
tf3Pad->cd();
tf3->Draw("gl");
}
Author
Timur Pocheptsov

Definition in file gltf3.C.

TStyle::SetCanvasPreferGL
void SetCanvasPreferGL(Bool_t prefer=kTRUE)
Definition: TStyle.h:325
TPad
Definition: TPad.h:26
TFormula
Definition: TFormula.h:85
TPaveLabel::Draw
virtual void Draw(Option_t *option="")
Draw this pavelabel with its current attributes.
Definition: TPaveLabel.cxx:77
gStyle
R__EXTERN TStyle * gStyle
Definition: TStyle.h:412
TF3::Draw
virtual void Draw(Option_t *option="")
Draw this function with its current attributes.
Definition: TF3.cxx:176
TF3
Definition: TF3.h:28
kRed
@ kRed
Definition: Rtypes.h:66
TPaveLabel
Definition: TPaveLabel.h:20
f1
TF1 * f1
Definition: legend1.C:11
TCanvas
Definition: TCanvas.h:23
TPad::cd
TVirtualPad * cd(Int_t subpadnumber=0)
Set Current pad.
Definition: TPad.cxx:594
TPad::Draw
virtual void Draw(Option_t *option="")
Draw Pad in Current pad (re-parent pad if necessary).
Definition: TPad.cxx:1285