lwt_AddLine()

LWT_ELEMID* lwt_AddLine	(	LWT_TOPOLOGY *	topo,
		LWLINE *	line,
		double	tol,
		int *	nedges,
		int	max_edges
	)

Adds a linestring to the topology.

The given line will snap to existing nodes or edges within given tolerance. Existing edges or faces may be split by the line.

Parameters

topo	the topology to operate on
line	the line to add
tol	snap tolerance, the topology tolerance will be used if 0
nedges	output parameter, will be set to number of edges the line was split into, or -1 on error (liblwgeom error handler will be invoked with error message)
max_edges	the maximum number of edges to allow the input line to be split into. 0 for no limits. An error will be returned if number of edges would exceed this number.

Returns

an array of <nedges> edge identifiers that sewed together will build up the input linestring (after snapping). Caller will need to free the array using lwfree(), if not null.

Definition at line 7540 of file lwgeom_topo.c.

{
  return _lwt_AddLine(topo, line, tol, nedges, 1, max_new_edges);
}

References _lwt_AddLine().

Referenced by lwt_LoadLine().

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