Example showing how to use RBox

Author: couet

tutorials/v7/box.cxx

@@ -0,0 +1,64 @@
+/// \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();
+}