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hierarchical_scene.C File Reference
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Detailed Description
const
Int_t
Ns = 7;
void
add_blobs(
TEveElement
*
p
,
Float_t
rad,
Float_t
height
,
Float_t
size
,
Int_t
level)
{
if
(level <= 0)
return
;
for
(
Int_t
i = 0; i < Ns; ++i) {
auto
x
=
new
TEveGeoShape
(
"SS"
);
x
->SetShape(
new
TGeoSphere
(0,
size
));
Double_t
phi =
TMath::TwoPi
() * i / Ns;
x
->RefMainTrans().SetPos(rad*
TMath::Cos
(phi),
rad*
TMath::Sin
(phi),
height
);
x
->SetMainColor(
TColor::GetColorPalette
(
gRandom
->
Integer
(
TColor::GetNumberOfColors
())));
p
->AddElement(
x
);
add_blobs(
x
, 0.8 * rad, 0.8 *
height
, 0.8 *
size
, level - 1);
}
}
void
hierarchical_scene()
{
TEveManager::Create
();
TColor::SetPalette
(1, 0);
gRandom
=
new
TRandom3
(0);
auto
s =
gEve
->
SpawnNewScene
(
"Hierarchical Scene"
,
"OoogaDooga"
);
s->
SetHierarchical
(
kTRUE
);
gEve
->
GetDefaultViewer
()->
AddScene
(s);
add_blobs(s, 6, 4, 0.5, 4);
gEve
->
Redraw3D
(
kTRUE
);
}
size
size_t size(const MatrixT &matrix)
retrieve the size of a square matrix
Int_t
int Int_t
Definition
RtypesCore.h:45
Float_t
float Float_t
Definition
RtypesCore.h:57
Double_t
double Double_t
Definition
RtypesCore.h:59
kTRUE
constexpr Bool_t kTRUE
Definition
RtypesCore.h:93
gEve
R__EXTERN TEveManager * gEve
Definition
TEveManager.h:243
p
winID h TVirtualViewer3D TVirtualGLPainter p
Definition
TGWin32VirtualGLProxy.cxx:51
height
Option_t Option_t TPoint TPoint const char GetTextMagnitude GetFillStyle GetLineColor GetLineWidth GetMarkerStyle GetTextAlign GetTextColor GetTextSize void char Point_t Rectangle_t height
Definition
TGWin32VirtualXProxy.cxx:164
gRandom
R__EXTERN TRandom * gRandom
Definition
TRandom.h:62
TColor::SetPalette
static void SetPalette(Int_t ncolors, Int_t *colors, Float_t alpha=1.)
Static function.
Definition
TColor.cxx:2804
TColor::GetColorPalette
static Int_t GetColorPalette(Int_t i)
Static function returning the color number i in current palette.
Definition
TColor.cxx:1455
TColor::GetNumberOfColors
static Int_t GetNumberOfColors()
Static function returning number of colors in the color palette.
Definition
TColor.cxx:1475
TEveElement
Base class for TEveUtil visualization elements, providing hierarchy management, rendering control and...
Definition
TEveElement.h:36
TEveGeoShape
Wrapper for TGeoShape with absolute positioning and color attributes allowing display of extracted TG...
Definition
TEveGeoShape.h:24
TEveManager::GetDefaultViewer
TEveViewer * GetDefaultViewer() const
Returns the default viewer - the first one in the fViewers list.
Definition
TEveManager.cxx:257
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:887
TEveManager::Redraw3D
void Redraw3D(Bool_t resetCameras=kFALSE, Bool_t dropLogicals=kFALSE)
Definition
TEveManager.h:168
TEveManager::SpawnNewScene
TEveScene * SpawnNewScene(const char *name, const char *title="")
Create a new scene.
Definition
TEveManager.cxx:336
TEveScene::SetHierarchical
void SetHierarchical(Bool_t h)
Definition
TEveScene.h:54
TEveViewer::AddScene
virtual void AddScene(TEveScene *scene)
Add 'scene' to the list of scenes.
Definition
TEveViewer.cxx:261
TGeoSphere
Definition
TGeoSphere.h:17
TRandom3
Random number generator class based on M.
Definition
TRandom3.h:27
TRandom::Integer
virtual UInt_t Integer(UInt_t imax)
Returns a random integer uniformly distributed on the interval [ 0, imax-1 ].
Definition
TRandom.cxx:361
x
Double_t x[n]
Definition
legend1.C:17
TMath::Cos
Double_t Cos(Double_t)
Returns the cosine of an angle of x radians.
Definition
TMath.h:594
TMath::Sin
Double_t Sin(Double_t)
Returns the sine of an angle of x radians.
Definition
TMath.h:588
TMath::TwoPi
constexpr Double_t TwoPi()
Definition
TMath.h:44
Author
Matevz Tadel
Definition in file
hierarchical_scene.C
.
tutorials
eve
hierarchical_scene.C
ROOT master - Reference Guide Generated on Wed Aug 14 2024 14:55:21 (GVA Time) using Doxygen 1.9.8