doc/v628/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();

}

Float_t
float Float_t
Definition RtypesCore.h:57

Double_t
double Double_t
Definition RtypesCore.h:59

TCanvas.h

TF2.h

gROOT
#define gROOT
Definition TROOT.h:405

TStyle.h

gStyle
R__EXTERN TStyle * gStyle
Definition TStyle.h:414

TTimer.h

gPad
#define gPad
Definition TVirtualPad.h:303

TCanvas
The Canvas class.
Definition TCanvas.h:23

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:3392

TF1::SetNpx
virtual void SetNpx(Int_t npx=100)
Set the number of points used to draw the function.
Definition TF1.cxx:3431

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:3405

TF1::SetParameter
virtual void SetParameter(Int_t param, Double_t value)
Definition TF1.h:639

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:920

TF2::Draw
void Draw(Option_t *option="") override
Draw this function with its current attributes.
Definition TF2.cxx:259

TStyle::SetFrameFillColor
void SetFrameFillColor(Color_t color=1)
Definition TStyle.h:356

TStyle::SetCanvasPreferGL
void SetCanvasPreferGL(Bool_t prefer=kTRUE)
Definition TStyle.h:326

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:243

TTimer::SetCommand
void SetCommand(const char *command)
Set the interpreter command to be executed at time out.
Definition TTimer.cxx:176

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:592

TMath::Pi
constexpr Double_t Pi()
Definition TMath.h:37