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Forum: Geometry
Re: None Boundaries and G4BREPSolidPolyhedra (Denis Rosset)
Date: 18 Jul, 2005
From: Radovan Chytracek <radovan.chytracek@gmail.com>

Try to see some BREP polyhedra configurations in the4 BREPs gallery:

http://cern.ch/radoone/g4/BREPgallery.html

Cheers

        Radovan

On 7/17/05, Denis Rosset <denisrosset@hotmail.com> wrote:
> *** Discussion title: Geometry
> Email replies to PublicHyperNews@slac.stanford.edu must include:
>  In-Reply-To: <"/geometry/414"@geant4-hn.slac.stanford.edu>
>  Subject: ...change this to be about your reply.
> 
> Hello, I'm using G4BREPSolidPolyhedra to model a hollowed prism with an
> hexagonal base (nSides=6, rMin,rMax>0). Several of these solids (with
> the same shape, and different radiuses) must be embedded inside each
> other. Unfortunately, I cannot use mother-daughter relationships because
> of a complex hole in the middle of the detector. I'm using a big World
> volume where I'm embedding all the objects. Unfortunately, the
> boundaries of several solids (all children of World) are touching
> themselves. Does this count as a geometry violation ? The ugly solution
> is to use a small gap between each solid. Is there another way ? The
> example TestEm03 seems to have several rings in this configuration and
> there aren't any problems.
> 
> Is there a way out of there ?
> 
> Thanks,
> 
> Denis Rosset
> 


-- 
Radovan Chytracek CERN IT/ADC
mailto:Radovan.Chytracek@cern.ch

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