CGAL users discussion list

[Efi Fogel <>]

You are correct.

A geometric traits that handles general circular arcs on a sphere does not exist.

Naturally, a geometric traits that handles arbitrary curves on a sphere does not exist either.
The manual contains a specification of the traits concept.

The book "CGAL Arrangements and their Applications" contains more detailed explanations.

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On Sun, Aug 3, 2014 at 8:54 AM, Paul Ullrich <> wrote:

That makes sense.  I noticed that spherical_insert.cpp makes use of
Arr_geodesic_arc_on_sphere_traits_2, but lines of constant latitude are not
geodesic arcs.  If I'm understanding the code correctly, I would need an
object which defined geometric traits for arbitrary curves on the sphere -
does this exist?



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