box.cxx

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/// \file
/// \ingroup tutorial_v7
///
/// 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.
///
/// \macro_image
/// \macro_code
///
/// \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
 
#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.);
   RColor Color2(0., 0., 1.);
 
   OptsBox1->SetLineColor(Color1);
   OptsBox1->SetLineWidth(5);
   OptsBox1->SetLineColorAlpha(.5);
   OptsBox1->SetFillColor(Color2);
   OptsBox1->SetFillColorAlpha(.3);
 
   auto OptsBox2 = canvas->Draw(RBox({0.4_normal, 0.2_normal}, {0.6_normal,0.7_normal}));
   OptsBox2->SetLineColor(Color2);
   OptsBox2->SetFillStyle(0);
   OptsBox2->SetLineStyle(2);
   OptsBox2->SetLineWidth(3);
 
   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->SetLineWidth(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->SetLineWidth(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->SetLineWidth(3);
 
   canvas->Show();
}