doc/hackathon/eve_2box_8C.html

#include <ROOT/REveBox.hxx>

#include <ROOT/REveScene.hxx>

#include <ROOT/REveManager.hxx>


using namespace ROOT::Experimental;


REveBox *box(Float_t a = 10, Float_t d = 5, Float_t x = 0, Float_t y = 0, Float_t z = 0)

{

   auto gEve = REveManager::Create();


   TRandom &r = *gRandom;


   auto b = new REveBox;

   b->SetMainColor(kCyan);

   b->SetMainTransparency(0);


#define RND_BOX(x) r.Uniform(-(x), (x))

   b->SetVertex(0, x - a + RND_BOX(d), y - a + RND_BOX(d), z - a + RND_BOX(d));

   b->SetVertex(1, x - a + RND_BOX(d), y + a + RND_BOX(d), z - a + RND_BOX(d));

   b->SetVertex(2, x + a + RND_BOX(d), y + a + RND_BOX(d), z - a + RND_BOX(d));

   b->SetVertex(3, x + a + RND_BOX(d), y - a + RND_BOX(d), z - a + RND_BOX(d));

   b->SetVertex(4, x - a + RND_BOX(d), y - a + RND_BOX(d), z + a + RND_BOX(d));

   b->SetVertex(5, x - a + RND_BOX(d), y + a + RND_BOX(d), z + a + RND_BOX(d));

   b->SetVertex(6, x + a + RND_BOX(d), y + a + RND_BOX(d), z + a + RND_BOX(d));

   b->SetVertex(7, x + a + RND_BOX(d), y - a + RND_BOX(d), z + a + RND_BOX(d));

#undef RND_BOX


   gEve->GetEventScene()->AddElement(b);

   gEve->Show();


   return b;

}

r
ROOT::R::TRInterface & r
Definition Object.C:4

REveBox.hxx

REveManager.hxx

REveScene.hxx

d
#define d(i)
Definition RSha256.hxx:102

b
#define b(i)
Definition RSha256.hxx:100

a
#define a(i)
Definition RSha256.hxx:99

Float_t
float Float_t
Float 4 bytes (float).
Definition RtypesCore.h:71

kCyan
@ kCyan
Definition Rtypes.h:67

gEve
externTEveManager * gEve
Definition TEveManager.h:243

gRandom
externTRandom * gRandom
Definition TRandom.h:62

REveBox
3D box with arbitrary vertices (cuboid).

ROOT::Experimental::REveManager::Create
static REveManager * Create()
If global REveManager* REX::gEve is not set initialize it.
Definition REveManager.cxx:683

TRandom
This is the base class for the ROOT Random number generators.
Definition TRandom.h:27

RND_BOX
#define RND_BOX(x)

box
void box(Int_t pat, Double_t x1, Double_t y1, Double_t x2, Double_t y2)
Definition fillpatterns.C:1

y
Double_t y[n]
Definition legend1.C:17

x
Double_t x[n]
Definition legend1.C:17

ROOT::Experimental
Namespace for ROOT features in testing.
Definition TROOT.h:100