CGAL users discussion list

[Andreas Fabri <>]

Hello,

I guess a diagram would be helpful to understand what you want to do.
I already don't understand what a 2D Delaunay has to do with 3D points.

andreas



 wrote:
> Hello,
>
> assume having tho surfaces (S1 and S2) represented by 3d points and having a 
> 2d
> delaunay triangulation of one of these surfaces (lets say of S1), I would like
> to check if a point of S2 falls within the region/boundary/extend of surface
> S1. It must only fall within the boundary not       necessarily in the plane.
>
> Is there a way to create a boundary polygon of a triangulation or to check if 
> a
> point is within the extend of a triangulated surface? Could this be done with
> constrained triangulation? If yes, how could i tell which are the points that
> form the boundary. Hope you understand my question.