CGAL users discussion list

[Jánosi Zoli <>]

Hi, i could appreciate some help.

I want to combine two sufraces. (off files)

The inner, and the outer(brain) region of a skull.

 They are from the same system, but not in contact with each other. Like a bigger and a smaller sphere in each other.

I copied the two off files into one, computed the indicies, and it works great like one. I can remesh it,  and it clearly doing a great job. Except, the regions are not distinguished, but its important to me.

But the inner region is a well bounded, closed region. 

I think, that if cgal could find the regions, they would be marked, so there is something im doing wrong? I know its not a 100% good idea to do this kind of thing, but i have no better idea at now.

Is there a better way to combine surfaces, and the regions will be marked?

Thanks for helping me.