getFaceById

LWT_ISO_FACE*(* LWT_BE_CALLBACKS_T::getFaceById) (const LWT_BE_TOPOLOGY *topo, const LWT_ELEMID *ids, int *numelems, int fields)

Get faces by id.

Parameters

topo	the topology to act upon
ids	an array of element identifiers
numelems	input/output parameter, pass number of edge identifiers in the input array, gets number of node 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_FACE_* macros

Returns

an array of faces or NULL in the following cases:

• none found ("numelems" is set to 0)
• error ("numelems" is set to -1)

Definition at line 376 of file liblwgeom_topo.h.