Re: (no subject)

On Fri, 13 May 2005, Dmitry Naumov wrote:

> I had yesterday further problem (that is why I reply only today) : TGeoMedim
> must be
> defined with all parameters like
> fParams[0] = isvol;
> fParams[1] = ifield;
> fParams[2] = fieldm;
> fParams[3] = tmaxfd;
> fParams[4] = stemax;
> fParams[5] = deemax;
> fParams[6] = epsil;
> fParams[7] = stmin;
>
> I did not know that before because G4 worked well without that, while G3 was
> crashing with float
> exception. If I remember well from debugger it was something like:
> LOG(den/A) with A = 0.
> But OK, now it seems working (not crashing), thank you again.

  In Geant4, only stemax is applied as step limitation   if its value is > 0. Other parameters are ignored.

>
> How can I display with G3 ? I put
> if (TString(gMC->GetName()) == "TGeant3") {
> // add scale (1.4)
> gMC->Gdraw("TOP", 30., 30., 0, 10., 10., .75, .75);
> } In MCApplication::FinishEvent()
>
> and
> if (TString(gMC->GetName()) == "TGeant3") {
> // Set drawing options
> gMC->Gsatt("*", "seen", 16);
> }
> in set_vis.C
>
> but nothing appears...

  This is valid only for TGeant3 (without TGeo);   with TGeant3TGeo, you should use the functions of   TGeoManager:
  gGeoManager->GetTopVolume()->Draw();

  It is true, that the setting for TGeant3TGeo is missing   in set_vis.C; I will add it.

  Ivana

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