On Tue, Aug 25, 2009 at 04:44:15PM +0200, Uwe Rathmann wrote: > Andre Haupt wrote: > > > Yes, i know that this wouldn't be too hard. I just wondered, if it's > > already done ;-) > > Qwt has an implementation of Sutherland-Hodgman. Look into qwt_clipper.cpp thanks Uwe, will do. regards, Andre