CGAL users discussion list

["Wang Weiwei" <>]

Hi all,

I'm using the Arrangement_2 module of CGAL.

I want to attach some user information to the vertices of the arrangement. 
I've found some example code in the example folder of the CGAL lib (such as
ex_dcel_extension.C). 

Unfortunately, in this example, the user data are attached to the vertices, 
halfedges and faces after the arrangement was built. What I want to know is 
how I can attach these user data to the vertices during the construction of 
the arrangement. For those vertices newly created during the intersection of 
the curves, a pre-specified default value will be ok.

Thanks in advance for any help.

Max