Re: (no subject)

On Tue, 3 May 2005, Dmitry Naumov wrote:

> There is no way to suppress warning when the volumes are volumes
> are lower than asked? Apriori I do not know in which volume G4
> is stepping...

  At present, the warning is hard-coded.   I can make it optional or supress it completely,   as anyway, in case the off-mother does not exist the function   will return non-valid Id (=0) so user has a possibility   to test the result.
  I will make this modification with the next update.

  Best regards,

  Ivana

-- 
==============================================================
e-mail:  Ivana.Hrivnacova_at_cern.ch
address: Institut Physique Nucleaire, 91406 Orsay, France
phone:   (33) 01 69 15 65 94
==============================================================



> Ivana Hrivnacova wrote:

> 

> > Hi Dmitry,

> > 

> > On Tue, 3 May 2005, Dmitry Naumov wrote:

> > 

> >  

> > > Dear VMC developers,

> > > 

> > > I am adapting Ex03 for my application in which I build geometry via TGeo

> > > and use vgm for converting it into g4 internally in memory. Some things

> > > are not yet clear to me:

> > > 

> > > - naming conventions. My TGeoVolumes have names like: ScintPlateL_1_2

> > > it seems that G4 does not recongnize when the name contains underscores,

> > > G4 releases warnings. I modified names to like follows: ScintPlateLX1X2

> > > and they are recognized, while a warning persists:

> > >    

> > 

> > The reason is that underscore is used by default as a special character

> > in G3toG4 in naming of logical volumes. Even if you don't use g3tog4,

> > the underscores are still treated as special characters.

> > You can override this default value with e.g. '%'  by applying the command:

> > 

> > /mcDet/volNameSeparator %

> > 

> > in g4config.in.

> > Then, the underscores should be ok in your volumes names.  

> > > ++++  TG4Warning:  ++++

> > >   TG4StepManager::GetCurrentOffPhysicalVolume:

> > >   Volume ScintPlateLX1X2 has not defined mother in the required level.

> > > 

> > >    

> > 

> > This warning is issued each time when the depth of the volume

> > hierarchy is lower then that asked in gMC->CurrentVolOffID(2, copyNo);

> > - in your case 2.

> > For example, if you have hierarchy of volumes as below:

> >   World

> >   World/A1

> >   World/A1/B2

> > you will get these warnings when the current volume is World or A1;

> > only if you are in B2, this call has a good sense and will return

> > the Id of World.  

> > > - When the event is generated I see with G4 OpenGL viewer my detector and

> > > tracks

> > > inside it. That viewer does not look too nice and I would like to use root

> > > TGeo

> > > package as a viewer. The detector can be viweved without any problems,

> > > however

> > > I would like to fetch G4 generated tracks and draw them with TGeo

> > > "viewer".

> > > What

> > > is the way  these tracks can be accessed  and drawn?

> > > 

> > >    

> >  There is no way to draw directly G4 tracks via TGeo,

> >  as the tracks are not interfaced between the two programs.

> >  Besides OpenGL, you can use other Geant4 tools,

> >  such as Dawn and Wired; see eg:

> > http://geant4.slac.stanford.edu/g4cd/January2004/Documentation/Visualization/G

> > 4WIREDTutorial/G4WIREDTutorial.html

> >  http://geant4.slac.stanford.edu/g4cd/January2004/Documentation/Visualization/

> > G4DAWNTutorial/G4DAWNTutorial.html

> > 

> >  Or, with TGeo, you can base your display on your hits objects  and draw the

> > hits positions. Andrei, probably, can give you more

> >  hints for this direction.

> > 

> >  Best regards,

> > 

> >  Ivana

> > 

> >  

> 

>