Thank you for your response! I was able to find the parent element. Is
there a way I could obtain the nodal information as well?

Viviana Palacio Betancur
PhD Student | 2016 Cohort
de Pablo Group
Institute for Molecular Engineering
University of Chicago

On Thu, May 17, 2018 at 4:34 PM, John Peterson <> wrote:

> On Thu, May 17, 2018 at 2:58 PM, Viviana Palacio Betancur <
>> wrote:
>> Hello,
>> Currently I'm working on calculating surface normals for a 3D mesh. The
>> way
>> I have set up this is by extracting the surface mesh by using
>> mesh->get_boundary_info().sync(mesh_surf);
>> This gives me a 2D mesh that I can use for calculating element normals.
>> However, I haven't been able to establish the connection between the
>> element ids of the surface mesh to the ids of the original mesh.
> The elements in mesh_surf will have an interior_parent() which points to
> the higher-dimensional element they came from.
> --
> John
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