On Tue, 4 Dec 2018, Yuxiang Wang wrote:
> When I use `MeshTools::Generation::build_square`, I obtain a mesh with:
> enum BOUNDARY_ID {
> BOUNDARY_ID_MIN_Y = 0,
> BOUNDARY_ID_MAX_X = 1,
> BOUNDARY_ID_MAX_Y = 2,
> BOUNDARY_ID_MIN_X = 3,
> };
>
> However, I noticed that
>
> MeshBase::const_node_iterator nodeit =
> mesh.bid_nodes_begin(BOUNDARY_ID_MAX_X);
> const MeshBase::const_node_iterator node_end =
> mesh.bid_nodes_end(BOUNDARY_ID_MAX_X);
>
> does not work for such IDs.
Yes, that's correct. build_square sets boundary ids on *sides*, but
not on nodes.
> Could you please help me in how to iterate through all the nodes?
You could first use BoundaryInfo::build_node_list_from_side_list() to
assign side boundary ids to the nodes on that side. Corner nodes will
be assigned 2 boundary ids.
---
Roy
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