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Reference Guide
rtext_angle.cxx File Reference

Detailed Description

This macro demonstrate the text attributes for RText.

Angle, size and color are changed in a loop. The text alignment and the text font are fixed.

/*************************************************************************
* Copyright (C) 1995-2015, Rene Brun and Fons Rademakers. *
* All rights reserved. *
* *
* For the licensing terms see $ROOTSYS/LICENSE. *
* For the list of contributors see $ROOTSYS/README/CREDITS. *
*************************************************************************/
#include "ROOT/RCanvas.hxx"
#include "ROOT/RColor.hxx"
#include "ROOT/RText.hxx"
#include "ROOT/RPadPos.hxx"
using namespace ROOT::Experimental;
void rtext_angle()
{
// Create a canvas to be displayed.
auto canvas = RCanvas::Create("RText angle example");
for (double angle = 0; angle <= 360; angle += 10) {
auto draw = canvas->Draw<RText>(RPadPos(0.5_normal, 0.6_normal), "____ Hello World");
draw->text.color = RColor((int) (0.38*angle), (int) (0.64*angle), (int) (0.76*angle));
draw->text.size = 0.01 + angle/5000.;
draw->text.angle = angle;
draw->text.align = RAttrText::kLeftTop;
draw->text.font = RAttrFont::kArial;
}
canvas->Show();
}
Date
2017-10-17
Warning
This is part of the ROOT 7 prototype! It will change without notice. It might trigger earthquakes. Feedback is welcome!
Author
Olivier Couet Olivi.nosp@m.er.C.nosp@m.ouet@.nosp@m.cern.nosp@m..ch

Definition in file rtext_angle.cxx.