|Message: BREPS tutorial / a rounded box as a single BREP solid?||Not Logged In (login)|
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Hello, There are several objects I am now implementing in Geant4 geometry which could best be described as boxes with rounded corners; the most important of these is, as it happens, the most extreme form of this - it is basically a box with two half-cylinders attached at +/-dX. I need this object to be represented by a single volume because of its internal structure, however I would rather avoid using a G4UnionSolid because of performance considerations. Now, it seems such a shape would be rather easy to describe with a BREP solid... except between many BREP-solid features still being under development, somewhat terse documentation of such solids and my limited experience with complex geometry representations, I don't quite know how - or whether the current state of BREPs in Geant even allows this. Therefore, I would very much appreciate some hints on the following: - can such an object be created in Geant4 now? I work with version 9.6.2; - are there any examples and/or tutorials on BREPs out there? Apparently the novice example N06 should contain something on that, however grepping through the source code of the aforementioned Geant version shows no mention of BREPs in example sources. Thank you in advance for your help! All the best, -- MS [ MIME part of type application/pgp-signature stripped ]