doc/hackathon/anim_8C.html

#include "TStyle.h"

#include "TCanvas.h"

#include "TF2.h"

#include "TTimer.h"


Double_t pi;

TF2 *f2;

Float_t t = 0;

Float_t phi = 30;

void anim()

{

   gStyle->SetCanvasPreferGL(true);

   gStyle->SetFrameFillColor(42);

   TCanvas *c1 = new TCanvas("c1");

   c1->SetFillColor(17);

   pi = TMath::Pi();

   f2 = new TF2("f2", "sin(2*x)*sin(2*y)*[0]", 0, pi, 0, pi);

   f2->SetParameter(0, 1);

   f2->SetNpx(15);

   f2->SetNpy(15);

   f2->SetMaximum(1);

   f2->SetMinimum(-1);

   f2->Draw("glsurf1");

   TTimer *timer = new TTimer(20);

   timer->SetCommand("Animate()");

   timer->TurnOn();

}

void Animate()

{

   // just in case the canvas has been deleted

   if (!gROOT->GetListOfCanvases()->FindObject("c1"))

      return;

   t += 0.05 * pi;

   f2->SetParameter(0, TMath::Cos(t));

   phi += 2;

   gPad->SetPhi(phi);

   gPad->Modified();

   gPad->Update();

}

Double_t
double Double_t
Double 8 bytes.
Definition RtypesCore.h:73

Float_t
float Float_t
Float 4 bytes (float).
Definition RtypesCore.h:71

TCanvas.h

TF2.h

gROOT
#define gROOT
Definition TROOT.h:417

TStyle.h

gStyle
externTStyle * gStyle
Definition TStyle.h:442

TTimer.h

gPad
#define gPad
Definition TVirtualPad.h:322

TCanvas
The Canvas class.
Definition TCanvas.h:23

TF1::SetNpx
virtual void SetNpx(Int_t npx=100)

TF1::SetMaximum
virtual void SetMaximum(Double_t maximum=-1111)

TF1::SetMinimum
virtual void SetMinimum(Double_t minimum=-1111)

TF1::SetParameter
virtual void SetParameter(Int_t param, Double_t value)
Definition TF1.h:608

TF2
Definition TF2.h:29

TF2::Draw
void Draw(Option_t *option="") override
Default Draw method for all objects.

TF2::SetNpy
virtual void SetNpy(Int_t npy=100)

TTimer
Handles synchronous and a-synchronous timer events.
Definition TTimer.h:51

TTimer::TurnOn
virtual void TurnOn()
Add the timer to the system timer list.
Definition TTimer.cxx:246

TTimer::SetCommand
void SetCommand(const char *command)
Set the interpreter command to be executed at time out.
Definition TTimer.cxx:179

c1
return c1
Definition legend1.C:41

TMath::Cos
Double_t Cos(Double_t)
Returns the cosine of an angle of x radians.
Definition TMath.h:605

TMath::Pi
constexpr Double_t Pi()
Definition TMath.h:40