I don't see any problem using current convensions if the co-linear case is disallowed.
If the points are not co-linear. It is sufficient to use the the same rules that would apply if the three point were to be transformed into the x-y plane by a series of simple rotations. Craig ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
