Extracting all nodes / vertices of a forest or tree?

[hilldean09]

Extracting all nodes / vertices of a forest or tree?

Is there a function or method for extracting the vertices of a t8_forest_t or t8_tree_t object within T8code? I have been looking through the documentation and source code but have been unable to find such a function or routine myself.

Alternatively, is there a method for converting t8_forest_t or t8_tree_t objects into p4est compatible forms as p4est has a particular function to achieve my desired end goal (p4est_lnodes_new)? I am less familiar with p4est and how T8code interfaces with it apologies.

End Goal

My end goal in this is to obtain a global ordering of the nodes / vertices of T8code's forest structure that I will later experiment with reordering the cell local node indexing to utilize T8code within Gridap.jl.

Thank you very much for your time.

[sandro-elsweijer]

Hey @hilldean09!
I am sorry for the late reply, we had some holidays here.
Unfortunately, we do not have the lnodes functionality of p4est yet and our mapping from refinement tree to the actual element inside the mesh was changed quite a bit and this is not compatible anymore.
Can you elaborate more what your intended usage is? Then we can probably figure something out.
Do you just want all vertices inside a forest or do you want to create a matrix-like object of the mesh?

Btw. the t8_tree_t is a quite low level structure, which should not be needed in most cases. There probably is an easier way to do this. If you want, you can join our Mattermost instance, where we have a collection of devs and users who will happily discuss things like this with you.