Hello Meplan, > Hello Rooters! > Is there a way to define a Torus like TTUBE, TBRICK,... for geometry > drawing? No, ROOT has no ready-to-use shape like that. Initially the ROOT set of the shapes was "borrowed" from GEANT3 Manual. This set was optimized to simulate the High Energy Physics Detectors rather to produce some 3D picture. See: http://wwwinfo.cern.ch/asdoc/geant_html3/node109.html#SECTION04100000000 0000000000000 >From http://wwwinfo.cern.ch/asdoc/geant_html3/geantall.html Fortunately this doesn't mean one can not provide his/her own new shape class. For example, the ROOT C++ class: http://root.cern.ch/root/htmldoc/TXTRU.html#TXTRU:description has no GEANT-3 prototype and was written by ROOT user, Robert Hatcher from FermiLab. So you can. My best regards, Valeri > thx, > Olivier Meplan
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