Hi All, Is it possible to use one node to "cut" a piece out of another one? In Geant it was possible to overwrite one region of space occupied by an object consisting of a certain material by another one consisting of another material (the "only" option). In that way it was possible to create complicated shapes by trimming the edges of simple shapes with pieces of air, which are then invisible. What I am trying to do is to make a drawing of a light guide that is triangular on one side and circular on the other. The circular end is the narrow end of a cone; the other end of this cone just circumscribes the triangle. A TPGON unfortuately doesn't let you set the inner and outer radii for each point independently, otherwise it would be easy. Anybody who knows how to solve this problem? Or is it simply not possible in Root since it is not an AutoCad clone? Thanks, -- Gerco Dr. C.J.G. Onderwater Nuclear Physics Laboratory 312 Loomis Laboratory of Physics University of Illinois at Urbana-Champaign 1110 West Green Street Urbana, IL 61801-3080 Phone : (217) 244-7363 Fax : (217) 333-1215 E-mail: onderwat@uiuc.edu
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