doc/v632/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,"|>");

}


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

TArrow::DrawArrow
virtual TArrow * DrawArrow(Double_t x1, Double_t y1, Double_t x2, Double_t y2, Float_t arrowsize=0, Option_t *option="")
Draw this arrow with new coordinates.
Definition TArrow.cxx:135

TArrow::Draw
void Draw(Option_t *option="") override
Draw this arrow with its current attributes.
Definition TArrow.cxx:120

TAttFill::SetFillColor
virtual void SetFillColor(Color_t fcolor)
Set the fill area color.
Definition TAttFill.h:37

TAttText::SetTextAlign
virtual void SetTextAlign(Short_t align=11)
Set the text alignment.
Definition TAttText.h:42

TAttText::SetTextColor
virtual void SetTextColor(Color_t tcolor=1)
Set the text color.
Definition TAttText.h:44

TAttText::SetTextSize
virtual void SetTextSize(Float_t tsize=1)
Set the text size.
Definition TAttText.h:47

TCanvas
The Canvas class.
Definition TCanvas.h:23

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

TLine::DrawLine
virtual TLine * DrawLine(Double_t x1, Double_t y1, Double_t x2, Double_t y2)
Draw this line with new coordinates.
Definition TLine.cxx:103

TObject::Draw
virtual void Draw(Option_t *option="")
Default Draw method for all objects.
Definition TObject.cxx:274

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

TPaveLabel::Draw
void Draw(Option_t *option="") override
Draw this pavelabel with its current attributes.
Definition TPaveLabel.cxx:88

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

TPaveText::AddText
virtual TText * AddText(Double_t x1, Double_t y1, const char *label)
Add a new Text line to this pavetext at given coordinates.
Definition TPaveText.cxx:191

TPaveText::Draw
void Draw(Option_t *option="") override
Draw this pavetext with its current attributes.
Definition TPaveText.cxx:242

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