doc/v618/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
Definition: RtypesCore.h:55

Float_t
float Float_t
Definition: RtypesCore.h:53

TCanvas.h

TF2.h

gROOT
#define gROOT
Definition: TROOT.h:414

TStyle.h

gStyle
R__EXTERN TStyle * gStyle
Definition: TStyle.h:406

TTimer.h

gPad
#define gPad
Definition: TVirtualPad.h:286

TCanvas
The Canvas class.
Definition: TCanvas.h:31

TF1::SetMaximum
virtual void SetMaximum(Double_t maximum=-1111)
Set the maximum value along Y for this function In case the function is already drawn,...
Definition: TF1.cxx:3393

TF1::SetNpx
virtual void SetNpx(Int_t npx=100)
Set the number of points used to draw the function.
Definition: TF1.cxx:3432

TF1::SetMinimum
virtual void SetMinimum(Double_t minimum=-1111)
Set the minimum value along Y for this function In case the function is already drawn,...
Definition: TF1.cxx:3406

TF1::SetParameter
virtual void SetParameter(Int_t param, Double_t value)
Definition: TF1.h:628

TF2
A 2-Dim function with parameters.
Definition: TF2.h:29

TF2::SetNpy
virtual void SetNpy(Int_t npy=100)
Set the number of points used to draw the function.
Definition: TF2.cxx:932

TF2::Draw
virtual void Draw(Option_t *option="")
Draw this function with its current attributes.
Definition: TF2.cxx:241

TStyle::SetFrameFillColor
void SetFrameFillColor(Color_t color=1)
Definition: TStyle.h:349

TStyle::SetCanvasPreferGL
void SetCanvasPreferGL(Bool_t prefer=kTRUE)
Definition: TStyle.h:319

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:241

TTimer::SetCommand
void SetCommand(const char *command)
Set the interpreter command to be executed at time out.
Definition: TTimer.cxx:174

c1
return c1
Definition: legend1.C:41

TGeant4Unit::pi
static constexpr double pi
Definition: TGeant4SystemOfUnits.h:67

TMath::Cos
Double_t Cos(Double_t)
Definition: TMath.h:629

TMath::Pi
constexpr Double_t Pi()
Definition: TMath.h:38