box.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.

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R__LOAD_LIBRARY(libROOTGpadv7)
 
#include "ROOT/RCanvas.hxx"
#include "ROOT/RColor.hxx"
#include "ROOT/RBox.hxx"
#include <ROOT/RPadPos.hxx>
#include "TMath.h"
 
void box()
{
   using namespace ROOT::Experimental;
 
   // Create a canvas to be displayed.
   auto canvas = RCanvas::Create("Canvas Title");
 
   auto OptsBox1 = canvas->Draw(RBox({0.1_normal, 0.3_normal}, {0.3_normal,0.6_normal}));
   RColor Color1(1., 0., 0., 0.5); // 50% opaque
   RColor Color2(0., 0., 1., 0.3); // 30% opaque
 
   OptsBox1->Border().SetColor(Color1).SetWidth(5);
   //OptsBox1->Fill().SetColor(Color2);
 
   auto OptsBox2 = canvas->Draw(RBox({0.4_normal, 0.2_normal}, {0.6_normal,0.7_normal}));
   OptsBox2->Border().SetColor(Color2).SetStyle(2).SetWidth(3);
   //OptsBox2->Fill().SetStyle(0);
 
   auto OptsBox3 = canvas->Draw(RBox({0.7_normal, 0.4_normal}, {0.9_normal,0.6_normal}));
   //OptsBox3->SetFillStyle(0);
   //OptsBox3->SetRoundWidth(50);
   //OptsBox3->SetRoundHeight(50);
   OptsBox3->Border().SetWidth(3);
 
   auto OptsBox4 = canvas->Draw(RBox({0.7_normal, 0.7_normal}, {0.9_normal,0.9_normal}));
   //OptsBox4->SetFillStyle(0);
   //OptsBox4->SetRoundWidth(50);
   //OptsBox4->SetRoundHeight(25);
   OptsBox4->Border().SetWidth(3);
 
   auto OptsBox5 = canvas->Draw(RBox({0.7_normal, 0.1_normal}, {0.9_normal,0.3_normal}));
   //OptsBox5->SetFillStyle(0);
   //OptsBox5->SetRoundWidth(25);
   //OptsBox5->SetRoundHeight(50);
   OptsBox5->Border().SetWidth(3);
 
   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 box.cxx.