Re: (no subject)

Hi Ivana,

thank you for your always prompt and efficiencient answers! I will try both: other viewers as WIRED and Dawn and will try to draw hits.

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...

Kind regards, Dmitry

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/G4WIREDTutorial/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
>
>
>
Received on Tue May 03 2005 - 13:19:18 MEST