getEdgeByNode

LWT_ISO_EDGE*(* LWT_BE_CALLBACKS_T::getEdgeByNode) (const LWT_BE_TOPOLOGY *topo, const LWT_ELEMID *ids, int *numelems, int fields)

Get edges that start or end on any of the given node identifiers.

Parameters

topo	the topology to act upon
ids	an array of node identifiers
numelems	input/output parameter, pass number of node identifiers in the input array, gets number of edges in output array if the return is not null, otherwise see

Returns

section for semantic.

Parameters

fields

fields to be filled in the returned structure, see LWT_COL_EDGE_* macros

Returns

an array of edges that are incident to a node or NULL in the following cases:

• no edge found ("numelems" is set to 0)
• error ("numelems" is set to -1) (

See also

lastErrorMessage)

Definition at line 503 of file liblwgeom_topo.h.