GetRingEdges — Returns the ordered set of signed edge identifiers met by walking on an a given edge side.
getfaceedges_returntype GetRingEdges(varchar atopology, integer aring, integer max_edges=null
Returns the ordered set of signed edge identifiers met by walking on an a given edge side. Each output consists of a sequence and a signed edge id. Sequence numbers start with value 1.
If you pass a positive edge id, the walk starts on the left side of the corresponding edge and follows the edge direction. If you pass a negative edge id, the walk starts on the right side of it and goes backward.
max_edges is not null no more than those records
are returned by that function. This is meant to be a safety parameter
when dealing with possibly invalid topologies.
This function uses edge ring linking metadata.