doc/v636/eval_8C.html

void eval()

{


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

   c1->Range(0, 0, 20, 10);

   TPaveLabel *pt1 = new TPaveLabel(0.2, 4, 3, 6, "Eval");

   pt1->SetTextSize(0.5);

   pt1->SetFillColor(42);

   pt1->Draw();

   TPaveText *pt2 = new TPaveText(4.5, 4, 7.8, 6);

   pt2->Draw();

   TText *t1 = pt2->AddText("Read Operator");

   TText *t2 = pt2->AddText("number i");

   TPaveText *pt3 = new TPaveText(9, 3.5, 17.5, 6.5);

   TText *t4 = pt3->AddText("Apply Operator to current stack values");

   TText *t5 = pt3->AddText("Example: if operator +");

   TText *t6 = pt3->AddText("value[i] += value[i-1]");

   t4->SetTextAlign(22);

   t5->SetTextAlign(22);

   t6->SetTextAlign(22);

   t5->SetTextColor(4);

   t6->SetTextColor(2);

   pt3->Draw();

   TPaveLabel *pt4 = new TPaveLabel(4, 0.5, 12, 2.5, "return result = value[i]");

   pt4->Draw();

   TArrow *ar1 = new TArrow(6, 4, 6, 2.7, 0.02, "|>");

   ar1->Draw();

   TText *t7 = new TText(6.56, 2.7, "if i = number of stack elements");

   t7->SetTextSize(0.04);

   t7->Draw();

   ar1->DrawArrow(6, 8, 6, 6.2, 0.02, "|>");

   TLine *l1 = new TLine(12, 6.6, 12, 8);

   l1->Draw();

   l1->DrawLine(12, 8, 6, 8);

   ar1->DrawArrow(3, 5, 4.4, 5, 0.02, "|>");

   ar1->DrawArrow(7.8, 5, 8.9, 5, 0.02, "|>");

}

ROOT::Detail::TRangeCast
Definition TCollection.h:311

TArrow
Draw all kinds of Arrows.
Definition TArrow.h:29

TCanvas
The Canvas class.
Definition TCanvas.h:23

TLine
Use the TLine constructor to create a simple line.
Definition TLine.h:22

TPaveLabel
A Pave (see TPave) with a text centered in the Pave.
Definition TPaveLabel.h:20

TPaveText
A Pave (see TPave) with text, lines or/and boxes inside.
Definition TPaveText.h:21

TText
Base class for several text objects.
Definition TText.h:22

c1
return c1
Definition legend1.C:41

t1
auto * t1
Definition textangle.C:20