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I also do dynamic sizing in our mred application to build the world based on a set of user-supplied objects that it must contain. I use CalculateExtent. Bob Weller Vanderbilt On Aug 28, 2009, at 11:54 AM, John Allison wrote: > > *** Discussion title: Geometry > > The visualisation system is faced a similar problem, namely > determining > a bounding volume for the current scene. The current scene can be a > single volume (and its daughters) or a collection of volumes (and > their > daughters) and other objects, such as axes, scales, etc. It's not easy > to extract but the code is there. If you think this would help please > contact me direct. ( John.Allison@manchester.ac.uk ) > > ------------------------------------------------------------- > Visit this GEANT4 at hypernews.slac.stanford.edu message (to reply > or unsubscribe) at: > http://hypernews.slac.stanford.edu/HyperNews/geant4/get/geometry/980/3.html