CGAL users discussion list

[Andreas Fabri <>]

Dear Qianqian,

We cleaned up the mechanism to mark edges as non-removable.
Please have a look at the example in the manual:

http://doc.cgal.org/latest/Surface_mesh_simplification/index.html#title14

Best regards,

Andreas

On 24/11/2014 23:09, Qianqian Fang wrote:
> Dear list:
>
> I have a slightly modified surface mesh simplification code, with
> the previous help from Fernando Cacciola, compiled for my meshing
> toolbox "iso2mesh". I just made some changes to this code to
> add the support for the default Lindstrom Turk placement policy
> in addition to the Midpoint placement, allowing them to be selected
> through the command options. However, my modified code no
> longer compiles.
>
> My code change can be found at
>
> https://sourceforge.net/p/iso2mesh/code/456
>
> and the full sample unit can be browsed here:
>
> https://sourceforge.net/p/iso2mesh/code/HEAD/tree/trunk/cgalsimp2/edge_collapse_enriched_polyhedron.cpp
>
> (the previous changes suggested by Fernando was to
> fix the edges on the boundary when a surface is open)
>
> the compilation errors are attached.
>
> Perhaps there is something simple that I have overlooked, can someone
> tell me how can I get this to work?
>
> My second question: using the Midpoint placement method, a
> simplified surface often presents self-intersecting elements. I am
> wondering if the LT placement, or any other approaches that can
> prevent the surface elements from intersecting after decimation?
>
> thanks
>
> Qianqian

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

phone: +33.492.954.912    skype: andreas.fabri