rbox.cxx

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/// \file
/// \ingroup tutorial_rcanvas
///
/// 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 (rcanvas_js)
/// \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"
 
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();
}