Hi Christian, Christian Holm Christensen wrote: > > Hi Rene, et al, > > On Tue, 13 Nov 2001 11:07:07 +0000 > Rene Brun <Rene.Brun@cern.ch> wrote > concerning "Re: [ROOT] TRotMatrix from TRotation": > > As I already announced a few days ago, ... > > I looked for this annoucement on roottalk, but I couldn't find it, and > I don't recall seeing it - probably my mistake - could you point to > where it is? > see: http://root.cern.ch/root/roottalk/roottalk01/3848.html > > ... we are currently working on a more powerful geometry package > > (TGeo.. classes). The TGeoMatrix will be consistent with TRotation. > > That sounds good. Some questions (sorry and ignore if you already > answered the questions in the annoucement): > > * Will in incorporate the STAR stuff? the functionality, not the code. > * Will it allow for division of nodes, like in GEANT 3.21? yes, for sure. > * Will it have methods like TNode::IsInside(const TVector3& r) const? Yes, yes, yes. > * Will it have the possibility of attaching electromagnetic fields to > a volume? And tracking parameters? Something more general. The possibility to hook any TObject* (could be elec/magn field, optical properties, etc) > * Will it be something like the GEANT 4 classes? NO > * Could one possibly use the physics algorithms of GEANT 4 and/or > 3.21, so that one could implment a detector simulation solely in > ROOT and not do all sorts of wierd loops to get GEANT 3.21/4 to > interface with the ROOT geometry definition? > You got the idea. As I said in my original mail, we prefer to show facts rather than papers. Once we have something to show, we will release what we have, expecting more feedback. Rene Brun
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