rbox.cxx File Reference

Detailed Description

This ROOT 7 example demonstrates how to create a ROOT 7 canvas (RCanvas) and draw ROOT 7 boxes in it (RBox).

It generates a set of boxes using the "normal" coordinates' system.

 
#include "ROOT/RCanvas.hxx"
#include "ROOT/RColor.hxx"
#include "ROOT/RBox.hxx"
#include "ROOT/RPadPos.hxx"
 
void rbox()
{
   using namespace ROOT::Experimental;
 
   // Create a canvas to be displayed.
   auto canvas = RCanvas::Create("RBox drawing");
 
   auto box1 = canvas->Draw<RBox>(RPadPos(0.1_normal, 0.3_normal), RPadPos(0.3_normal, 0.6_normal));
   box1->border.color = RColor::kBlue;
   box1->border.width = 5;
   box1->fill.color = RColor(0, 255, 0, 127); // 50% opaque
   box1->fill.style = RAttrFill::kSolid;
 
   auto box2 = canvas->Draw<RBox>(RPadPos(0.4_normal, 0.2_normal), RPadPos(0.6_normal, 0.7_normal));
   box2->border.color = RColor::kRed;
   box2->border.width = 10.f;
   box2->border.style = RAttrLine::kDashed;
   box2->fill.color = RColor(0, 0, 255, 179); // 70% opaque
   box2->fill.style = RAttrFill::kSolid;
 
   auto box3 = canvas->Draw<RBox>(RPadPos(0.7_normal, 0.4_normal), RPadPos(0.9_normal, 0.6_normal));
   box3->border.width = 3;
   box3->fill.color = RColor::kBlue;
   box3->fill.style = RAttrFill::kSolid;
 
   auto box4 = canvas->Draw<RBox>(RPadPos(0.7_normal, 0.7_normal), RPadPos(0.9_normal, 0.9_normal));
   box4->border.width = 4;
 
   auto box5 = canvas->Draw<RBox>(RPadPos(0.7_normal, 0.1_normal), RPadPos(0.9_normal, 0.3_normal));
   box5->border.rx = 10;
   box5->border.ry = 10;
   box5->border.width = 2;
 
   canvas->Show();
}

Date

2018-10-10

Warning

This is part of the ROOT 7 prototype! It will change without notice. It might trigger earthquakes. Feedback is welcome!

Author

Olivier Couet

Definition in file rbox.cxx.