CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

On 05/12/2016 02:16 PM, Sukhraj Singh wrote:
> Salut,
>
> The "Triangulated Surface Mesh Segmentation" module allows one to
> segment a surface mesh using the SDF values.
> It creates a Property Map which is colorized according to the indices,
> resulting into segments. Two spatially apart areas( i.e. not having
> common edges) of a Mesh may fall into same segment, since they had
> comparable SDF values.
>
> My question is, how can one extract these segments. Since I want to do
> further processing on a segment separately. Also I would like further
> divide a segment, into say sub-segments , where a sub-segment will have
> faces which are not spatially apart, i.e.  a subset which is having
> common edges only.


Set the parameter output_cluster_ids to true when calling the
segmentation function

http://doc.cgal.org/latest/Surface_mesh_segmentation/group__PkgSurfaceSegmentation.html#ga8533ea7b1062ebbabe3bf23fed303f24

If you need also the segments, then set the option to false and
use the function connected_components() considering as constrained
edges the edges between two faces belonging to different
segments.

http://doc.cgal.org/latest/Polygon_mesh_processing/group__keep__connected__components__grp.html#gabe2052b2281e1e628e68d8fea94be2d9


Sebastien.

> Thanks to inform.
>
>
>
>
> P.S. I am a newbie.
> --
> Sukhraj Singh