CGAL users discussion list

[Andreas Fabri <>]

Hello,

On what do you want to apply std::distance ?

You can add an int field to vertices as described here: https://doc.cgal.org/latest/Polyhedron/index.html#title12

You might switch to Surface_mesh   https://doc.cgal.org/latest/Surface_mesh/index.html
as the Vertex_index   is fundamentally an int

Andreas

On 2/26/2019 5:50 AM, Robert Sage wrote:

Hello, 

We need to convert Polyhedron_3 facet vertices from Vertex_handle to integer ids exactly like I see in:

https://doc.cgal.org/latest/Polyhedron/Polyhedron_2polyhedron_prog_off_8cpp-example.html

So we have adapted this code but are observing each std::distance operation runs at O(n) and thus the whole conversion takes a long time for Polyhedron with many facets. Is there a more efficient way?  

Thank you!

Robert

-- 
Andreas Fabri, PhD
Chief Officer, GeometryFactory
Editor, The CGAL Project

phone: +33.492.954.912    skype: andreas.fabri