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Reference Guide
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.

#include "ROOT/RCanvas.hxx"
#include "ROOT/RColor.hxx"
#include "ROOT/RBox.hxx"
#include "ROOT/RPadPos.hxx"
void box()
{
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));
RColor Color1(0, 255, 0, 0.5); // 50% opaque
RColor Color2(0, 0, 255, 0.7); // 70% opaque
box1->AttrBorder().SetColor(Color1).SetWidth(5);
box1->AttrFill().SetColor(RColor::kRed);
auto box2 = canvas->Draw<RBox>(RPadPos(0.4_normal, 0.2_normal), RPadPos(0.6_normal,0.7_normal));
box2->AttrBorder().SetColor(Color2).SetStyle(2).SetWidth(10);
box2->AttrFill().SetColor(RColor::kGreen);
auto box3 = canvas->Draw<RBox>(RPadPos(0.7_normal, 0.4_normal), RPadPos(0.9_normal,0.6_normal));
box3->AttrBorder().SetWidth(3);
box3->AttrFill().SetColor(RColor::kBlue);
auto box4 = canvas->Draw<RBox>(RPadPos(0.7_normal, 0.7_normal), RPadPos(0.9_normal,0.9_normal));
box4->AttrBorder().SetWidth(4);
auto box5 = canvas->Draw<RBox>(RPadPos(0.7_normal, 0.1_normal), RPadPos(0.9_normal,0.3_normal));
box5->AttrBorder().SetRx(10).SetRy(10).SetWidth(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 box.cxx.

ROOT::Experimental::RColor
The color class.
Definition: RColor.hxx:33
RPadPos.hxx
box
void box(Int_t pat, Double_t x1, Double_t y1, Double_t x2, Double_t y2)
Definition: fillpatterns.C:1
ROOT::Experimental::RCanvas::Create
static std::shared_ptr< RCanvas > Create(const std::string &title)
Create new canvas instance.
Definition: RCanvas.cxx:103
RColor.hxx
RCanvas.hxx
ROOT::Experimental::RColor::kBlue
static constexpr R__DLLEXPORT RGB_t kBlue
Definition: RColor.hxx:186
TCanvas::Show
void Show()
Show canvas.
Definition: TCanvas.cxx:2238
ROOT::Experimental::RColor::kGreen
static constexpr R__DLLEXPORT RGB_t kGreen
Definition: RColor.hxx:179
TCanvas::Draw
void Draw(Option_t *option="") override
Draw a canvas.
Definition: TCanvas.cxx:843
ROOT::Experimental
Definition: RDirectory.hxx:30
ROOT::Experimental::RPadPos
A position (horizontal and vertical) in a RPad.
Definition: RPadPos.hxx:28
ROOT::Experimental::RColor::kRed
static constexpr R__DLLEXPORT RGB_t kRed
Definition: RColor.hxx:191