cgal-discuss - [cgal-discuss] Question about estimation of local differential properties using CGAL

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From: "Oleksiy Busaryev" <>
To:
Subject: [cgal-discuss] Question about estimation of local differential properties using CGAL
Date: Fri, 22 Aug 2008 16:32:22 -0700
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Hello guys,

I have the following problem.

I want to use CGAL for computing principal directions of curvature for each vertex of a triangular mesh.

I tried to use code from Jet_fitting_3 example to do this - but even if I analyze large number of rings around each vertex,

principal curvature directions do not look consistent: for adjacent vertices (non-umbilic) sometimes they are opposite.

I attached a simple example: triangular mesh of a cylinder with principal directions shown

(3 rings was computed around each vertex for Monge fitting).

You can see that directions of maximum curvature do not go around the cylinder in a consistent manner (as I expected).

What can be the reason for this?

Thank you!

--
Best regards,
Oleksiy Busaryev.

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[cgal-discuss] Question about estimation of local differential properties using CGAL, Oleksiy Busaryev, 08/23/2008
- Re: [cgal-discuss] Question about estimation of local differential, Andreas Fabri, 08/25/2008
  - Fwd: [cgal-discuss] Question about estimation of local differential, Marc Pouget, 08/28/2008