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v6-22
Reference Guide
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/// \file
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/// \ingroup tutorial_eve
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/// Demonstrates usage of class TEveText - 2D & 3D text in GL.
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///
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/// \image html eve_text.png
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/// \macro_code
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///
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/// \author Alja Mrak-Tadel
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TEveText
*
text
()
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{
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gSystem
->
IgnoreSignal
(
kSigSegmentationViolation
,
true
);
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TEveManager::Create
();
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auto
marker =
new
TEvePointSet
(8);
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marker->SetName(
"Origin marker"
);
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marker->SetMarkerColor(6);
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marker->SetMarkerStyle(3);
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Float_t
a
= 10;
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marker->SetPoint(0,
a
, +
a
, +
a
);
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marker->SetPoint(1,
a
, -
a
, +
a
);
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marker->SetPoint(2, -
a
, -
a
, +
a
);
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marker->SetPoint(3, -
a
, +
a
, +
a
);
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marker->SetPoint(4, +
a
, +
a
, -
a
);
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marker->SetPoint(5, +
a
, -
a
, -
a
);
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marker->SetPoint(6, -
a
, +
a
, -
a
);
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marker->SetPoint(7, -
a
, -
a
, -
a
);
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gEve
->
AddElement
(marker);
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auto
t =
new
TEveText
(
"DADA"
);
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t->PtrMainTrans()->RotateLF(1, 3,
TMath::PiOver2
());
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t->SetMainColor(
kOrange
-2);
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t->SetFontSize(64);
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t->SetFontMode(
TGLFont::kExtrude
);
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t->SetLighting(
kTRUE
);
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gEve
->
AddElement
(t);
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// TEveText does not know its bounding box before first rendering.
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gEve
->
FullRedraw3D
(
kTRUE
);
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gEve
->
GetDefaultGLViewer
()->
ResetCurrentCamera
();
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gEve
->
GetDefaultGLViewer
()->
RequestDraw
(
TGLRnrCtx::kLODHigh
);
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return
t;
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}
Float_t
float Float_t
Definition:
RtypesCore.h:55
kTRUE
const Bool_t kTRUE
Definition:
RtypesCore.h:89
kOrange
@ kOrange
Definition:
Rtypes.h:65
gEve
R__EXTERN TEveManager * gEve
Definition:
TEveManager.h:243
kSigSegmentationViolation
@ kSigSegmentationViolation
Definition:
TSysEvtHandler.h:109
gSystem
R__EXTERN TSystem * gSystem
Definition:
TSystem.h:556
TEveManager::AddElement
void AddElement(TEveElement *element, TEveElement *parent=0)
Add an element.
Definition:
TEveManager.cxx:528
TEveManager::GetDefaultGLViewer
TGLViewer * GetDefaultGLViewer() const
Get TGLViewer of the default TEveViewer.
Definition:
TEveManager.cxx:266
TEveManager::Create
static TEveManager * Create(Bool_t map_window=kTRUE, Option_t *opt="FIV")
If global TEveManager* gEve is not set initialize it.
Definition:
TEveManager.cxx:893
TEveManager::FullRedraw3D
void FullRedraw3D(Bool_t resetCameras=kFALSE, Bool_t dropLogicals=kFALSE)
Perform 3D redraw of all scenes and viewers.
Definition:
TEveManager.cxx:428
TEvePointSet
TEvePointSet is a render-element holding a collection of 3D points with optional per-point TRef and a...
Definition:
TEvePointSet.h:36
TEveText
TEveElement class used for displaying FreeType GL fonts.
Definition:
TEveText.h:25
TGLFont::kExtrude
@ kExtrude
Definition:
TGLFontManager.h:30
TGLRnrCtx::kLODHigh
@ kLODHigh
Definition:
TGLRnrCtx.h:67
TGLViewer::RequestDraw
void RequestDraw(Short_t LOD=TGLRnrCtx::kLODMed)
Post request for redraw of viewer at level of detail 'LOD' Request is directed via cross thread gVirt...
Definition:
TGLViewer.cxx:438
TGLViewer::ResetCurrentCamera
void ResetCurrentCamera()
Resets position/rotation of current camera to default values.
Definition:
TGLViewer.cxx:358
TSystem::IgnoreSignal
virtual void IgnoreSignal(ESignals sig, Bool_t ignore=kTRUE)
If ignore is true ignore the specified signal, else restore previous behaviour.
Definition:
TSystem.cxx:591
text
TText * text
Definition:
entrylist_figure1.C:10
TMath::PiOver2
constexpr Double_t PiOver2()
Definition:
TMath.h:52
a
auto * a
Definition:
textangle.C:12
tutorials
eve
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ROOT v6-22 - Reference Guide Generated on Fri Apr 1 2022 11:53:18 (GVA Time) using Doxygen 1.9.4