Re: (no subject)

Hi Dmitry,

The support for TGeo is no longer triggered by an environment variable (e.g. -DWITHROOT). You should just instantiate TGeant3TGeo class instead of TGeant3 (or TGeant4) in your configuration file (e.g. g3Config.C). This is why you get IsRootGeometrySupported=0 On the other hand, I do not see why you receive messages from TGeo like: Warning in <TGeoManager::CloseGeometry>: geometry already closed . It is clear that you are doing something wrong. If it still does not work and your application is not that big, pack the whole thing and send it to me.

Andrei

Dmitry Naumov wrote:

> Hi Andrei, and VMC developers
>
> I think I understand why I have problems, it seems I compiled
> geant3_vmc without
> support for Root to VMC convertions. At least I see that
> gMC->IsRootGeometrySupported() returnes me 0 instead of expected 1.
> My variables like USE_VGM is set 1.
> To include that support I modified in geant3_vmc/Makefile the
> following line:
>
> CXXFLAGS := $(CXXOPTS) $(CLIBCXXOPTS) -I. -I$(ROOT_INCDIR) -ITGeant3
> -DWITHBOTH
>
> Which I assumed to follow README advice. What wrong I am doing?
>
> Best regards, Dmitry
>
> Andrei Gheata wrote:
>
>> Hi Dmitry,
>>
>>> Top volume is SiliconPlatePadX0. Master volume is TOP
>>
>>
>>
>> This is quite strange: you should get TOP instead of
>> SiliconPlatePadX0. Make sure TOP is the first volume that you create
>> in your ConstructGeometry. Make also sure that you do not draw some
>> volume meanwhile because this will change the current top volume.
>>
>>> Warning in <TGeoManager::CloseGeometry>: geometry already closed
>>
>>
>>
>> If your geometry is built/closed directly via TGeo (not VMC) you
>> should call gMC->SetRootGeometry() after gGeoManager->CloseGeometry()
>>
>>> Also a not clear thing for me is that I assumed to build the
>>> geometry in
>>> MCApplication::ConstructGeometry()
>>
>>
>>
>> Your assumption is correct: here is the place to build your geometry
>> or to load it from a root file.
>>
>> Hope this helps,
>> Cheers,
>> Andrei
>>
>> Dmitry Naumov wrote:
>>
>>> Dear VMC developers,
>>>
>>> Let me ask you a further question. Just briefly let me remind -
>>> I adapted Ex03 from VMC for my application which builds
>>> geometry with TGeo, converts it in memory to G3,4 geometries.
>>>
>>> Up to now I was plying mainly with G4 engine, now I decided
>>> to check what happens if I turn on G3 instead of G4. What I find
>>> is that my original geometry defined as:
>>> TOP
>>> TOP/Plates
>>> TOP/Plates/tubes
>>> etc
>>> is seen with G3 in a strange way:
>>>
>>> <skip>
>>> Top volume is SiliconPlatePadX0. Master volume is TOP
>>> Warning in <TGeoManager::CloseGeometry>: geometry already closed
>>> <skip>
>>>
>>> Also a not clear thing for me is that I assumed to build the
>>> geometry in
>>> MCApplication::ConstructGeometry()
>>>
>>> This works perfectly in G4 interface, while it crashes with G3
>>> interface.
>>> In order not have this crash I have to build the geometry before
>>> InitMC() method.
>>> Is it normal or I am confusing something?
>>>
>>>
>>> Thank you
>>> Dmitry
>>>
>
Received on Thu May 12 2005 - 10:22:17 MEST