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lineset.C
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1/// \file
2/// \ingroup tutorial_eve
3/// Demonstrates usage of class TEveStraightLineSet.
4///
5/// \image html eve_lineset.png
6/// \macro_code
7///
8/// \author Matevz Tadel
9
10TEveStraightLineSet* lineset(Int_t nlines = 40, Int_t nmarkers = 4)
11{
13
14 TRandom r(0);
15 Float_t s = 100;
16
17 auto ls = new TEveStraightLineSet();
18
19 for (Int_t i = 0; i<nlines; i++) {
20 ls->AddLine( r.Uniform(-s,s), r.Uniform(-s,s), r.Uniform(-s,s),
21 r.Uniform(-s,s), r.Uniform(-s,s), r.Uniform(-s,s));
22 // add random number of markers
23 Int_t nm = Int_t(nmarkers* r.Rndm());
24 for (Int_t m = 0; m < nm; m++) ls->AddMarker(i, r.Rndm());
25 }
26
27 ls->SetMarkerSize(1.5);
28 ls->SetMarkerStyle(4);
29
30 gEve->AddElement(ls);
31 gEve->Redraw3D();
32
33 return ls;
34}
35
36TEveStraightLineSet* lineset_2d(Int_t nlines = 40, Int_t nmarkers = 4)
37{
39
40 TRandom r(0);
41 Float_t s = 100;
42
43 auto ls = new TEveStraightLineSet();
44
45 for (Int_t i = 0; i<nlines; i++) {
46 ls->AddLine( r.Uniform(-s,s), r.Uniform(-s,s), 0,
47 r.Uniform(-s,s), r.Uniform(-s,s), 0);
48 // add random number of markers
49 Int_t nm = Int_t(nmarkers* r.Rndm());
50 for (Int_t m = 0; m < nm; m++) ls->AddMarker(i, r.Rndm());
51 }
52
53 ls->SetMarkerSize(1.5);
54 ls->SetMarkerStyle(4);
55
56 gEve->AddElement(ls);
57 gEve->Redraw3D();
58
59 return ls;
60}
ROOT::R::TRInterface & r
Definition: Object.C:4
int Int_t
Definition: RtypesCore.h:43
float Float_t
Definition: RtypesCore.h:55
R__EXTERN TEveManager * gEve
Definition: TEveManager.h:243
void AddElement(TEveElement *element, TEveElement *parent=0)
Add an element.
static TEveManager * Create(Bool_t map_window=kTRUE, Option_t *opt="FIV")
If global TEveManager* gEve is not set initialize it.
void Redraw3D(Bool_t resetCameras=kFALSE, Bool_t dropLogicals=kFALSE)
Definition: TEveManager.h:168
Set of straight lines with optional markers along the lines.
This is the base class for the ROOT Random number generators.
Definition: TRandom.h:27
void lineset(bool secondarySelect=true)
Definition: lineset.C:41
static constexpr double nm
static constexpr double s
auto * m
Definition: textangle.C:8