Thanks:
Is there a GEANT Fortran call that would basically accomplish the same
thing. I want to be able to start the FORTRAN event display, have it draw
the detector, dump the geometry file, convert it to a ROOT geometry file,
edit it from there.
Thanks
Michael Katz-Hyman
On Thu, 1 Jul 1999, Rene Brun wrote:
> Hi Michael,
> You can convert a Geant geometry to Root geometry with the following
> steps
> 1- run the interactive version of Geant and type the command;
> Geant > rz/file 21 detector.geom on
> This produces a Zebra RZ file detector.geom.
>
> 2- run the g2root program in $ROOTSYS/bin/g2root
> g2root detector.geom detector.C
> this converts the Zebra RZ file into a Root macro detector.C
>
> 3- run the following Root session;
> Root > .x detector.C
> Root > detector.Draw()
> Root > c1.x3d() (this invokes the 3-d Root viewver)
> Root > TFile f("detector.root","NEW") //open a new root file
> Root > detector.Write() //Write the geometry
> structure
> Root > f.Write()
>
> Note that the TNode structure currently in Root was not designed
> as a replacement for a true geometry package. The idea was mainly to
> draw
> simple geometries in event display programs.
> We are currently investigating several alternatives for a true &
> efficient
> geometry package supporting;
> - a disk data base with storage of multiple geometry versions
> - an interactive editor and viewer
> - with 3-d views
> - but also 2-d cut views
> - with interfaces to existing or future MC such as Geant3 or Geant4
>
> Rene Brun
>
>
> Michael Katz-Hyman wrote:
> >
> > I am aware of those programs.
> >
> > Out old event display is written in Fortran and GEANT and our geometries
> > are half way hard-coded into the FORTRAN. Under ROOT you can move in the
> > ROOT Canvas to save as a macro under the file menu. Is there a GEANT
> > routine that would essentially do the same for volumes created by GEANT?
> >
> > Thanks
> > Michael Katz-Hyman
> >
> > On Wed, 30 Jun 1999, Valeri Fine (Faine) wrote:
> >
> > > There are many ways to do this depends of your goals.
> > >
> > > Go to
> > >
> > > http://root.cern.ch/root/Search.phtml
> > >
> > > and look for "g2root" and "gh2root"
> > >
> > > An example of another "home-made, but still ROOT-based" solution is present
> > > on:
> > >
> > > http://www.star.bnl.gov/STAR/html/comp_l/root/html/St_geom_Maker.html
> > >
> > > With my regards,
> > > Valery
> > >
> > >
>
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