void first()
{
nut->
Range(0, 0, 20, 24);
t.SetTextFont(62);
t.SetTextSize(0.025);
t.SetTextAlign(12);
t.DrawText(2, 20.3, "ROOT is based on CLING, a powerful C/C++ interpreter.");
t.DrawText(2, 19.3, "Blocks of lines can be entered within {...}.");
t.DrawText(2, 18.3, "Previous typed lines can be recalled.");
t.SetTextFont(72);
t.SetTextSize(0.026);
t.DrawText(3, 17, "Root > float x=5; float y=7;");
t.DrawText(3, 16, "Root > x*sqrt(y)");
t.DrawText(3, 14, "Root > for (int i=2;i<7;i++) printf(\"sqrt(%d) = %f\n\",i,sqrt(i));");
t.DrawText(3, 10, "Root > TF1 f1(\"f1\",\"sin(x)/x\",0,10)");
t.DrawText(3, 9, "Root > f1.Draw()");
t.SetTextFont(81);
t.SetTextSize(0.018);
t.DrawText(4, 15, "(float) 13.2288f");
t.DrawText(4, 13.3, "sqrt(2) = 1.414214");
t.DrawText(4, 12.7, "sqrt(3) = 1.732051");
t.DrawText(4, 12.1, "sqrt(4) = 2.000000");
t.DrawText(4, 11.5, "sqrt(5) = 2.236068");
t.DrawText(4, 10.9, "sqrt(6) = 2.449490");
TPad *pad =
new TPad(
"pad",
"pad", .2, .05, .8, .35);
TF1 *
f1 =
new TF1(
"f1",
"sin(x)/x", 0, 10);
}
virtual void SetFillColor(Color_t fcolor)
Set the fill area color.
void Draw(Option_t *option="") override
Draw this function with its current attributes.
The most important graphics class in the ROOT system.
void SetBorderSize(Short_t bordersize) override
void SetGrid(Int_t valuex=1, Int_t valuey=1) override
void Range(Double_t x1, Double_t y1, Double_t x2, Double_t y2) override
Set world coordinate system for the pad.
TVirtualPad * cd(Int_t subpadnumber=0) override
Set Current pad.
void Draw(Option_t *option="") override
Draw Pad in Current pad (re-parent pad if necessary).
A Pave (see TPave) with a text centered in the Pave.
void Draw(Option_t *option="") override
Draw this pavelabel with its current attributes.
Base class for several text objects.