DLR-AMR
Copy cmesh vertex connectivity when cmesh is copied
Feature request
Is your feature request related to a problem? Please describe. Currently, when a cmesh is copied, its vertex connectivity is not copied with it, so the new cmesh looses the vertex conn information.
Describe the solution or feature you'd like Add a copy mechanism to the cmesh vertex connectivity classes. Ideally, we only build a new instance of the meta class "t8_cmesh_vertex_connectivity" that uses the same instances of "t8_cmesh_vertex_conn_tree_to_vertex". In order for this to properly work we might need to switch to shared pointers for the t8_cmesh_vertex_conn_tree_to_vertex members.
Add the copy to the t8_cmesh_copy function.
Add a check of the vertex connectivity to the t8_cmesh_is_equal function.
Describe alternatives you've considered N/A
Estimated priority
"Priority: medium" Should be solved within half a year
Additional context See #1758
Should we put a failure mechanism in place for now that prevents copying cmeshes with vertex connectivity?
@holke I do not think it os necessary to prevent copying these cmeshes, since all the information needed to build a new vertex conn are saved as attributes and the copied cmesh should be able to re-compute this
