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Forum: Geometry
Re: Question How to construct sine or cosine shape geometry? (Linlin Zhang)
Date: 08 May, 2017
From: John Apostolakis <John Apostolakis>

Dear Linlin,

The answer depends on the accuracy of the description that you need for 
your application.

If you can use an approximate description, then you should slice the 
tubular shape and approximate its different pieces with an existing 
Geant4 solid.  I suggest that you look into the G4CutTubs shape, as it 
may fulfill your needs - it may be possible to create the shape you need 
by gluing together several segments made of G4CutTubs.  Else you could 
look into cylinders (G4Tubs), extruded solids or tesselated solids (with 
triangular or quadrilateral facets.

Else, if you want a very accurate description, you will need to create 
your own G4VSolid implementation which describes the wire. Please refer 
to the Geant4 Users Guide for Toolkit developers regarding the interface 
this must implement.

Best regards,

John Apostolakis


On 08.05.17 09:51, Linlin Zhang wrote:
> *** Discussion title: Geometry
>
> Hello,
>
> I need to construct one solid geometry with sine or cosine shape wire.
> Does anybody have idea how to do ?
>
> Thanks, Linlin
>
> -------------------------------------------------------------
> Visit this GEANT4 at hypernews.slac.stanford.edu message (to reply or unsubscribe) at:
> http://hypernews.slac.stanford.edu/HyperNews/geant4/get/geometry/1531.html


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