PK_VERTEX_euler_merge_edges

PK_ERROR_code_t PK_VERTEX_euler_merge_edges
(
--- received arguments ---
PK_VERTEX_t     vertex, --- Vertex to be deleted
PK_EDGE_t       edge    --- Edge to survive
)


This function deletes a vertex from an edge.


Specific Errors:
    PK_ERROR_bad_vertex    incorrect number of edges or isolated loops
                           at 'vertex'
    PK_ERROR_bad_edge      'edge' is not connected to 'vertex'


'vertex' must have exactly two oriented edges and no isolated loops.  The
'edge' argument indicates which of the two edges of the vertex is to survive.
The direction of 'edge' after the operation remains unchanged.

If 'vertex' is the vertex of a split ring then no edge will be deleted.

Any geometry on the deleted edge and vertex will be deleted and resulting body
will normally be invalid.

The inverse of this function is PK_EDGE_euler_split

See here for an illustration.