[udig-dev] Snap Vertex to Line of Polygon Geometry

["Christina Bornträger" <sirilein@xxxxxxxxx>]

Hello everybody,

is there a way to snap a vertex of a polygon geometry to snap at a line 
of another polygon (maybe in another layer in the current map)?
Currently there are Snapping options, to snap a vertex to another 
vertex, but I did not found any possibility to snap to line. In jira 
(http://jira.codehaus.org/browse/UDIG-1279) there is a ticket with 
snapping to a line feature, but is was moved from one version to the next.

Has anybody some hints, how to implement such snapping option? In theory 
I think, the intersection between the distance circle surrounding the 
moved vertex with the lines of the underlying polygone line has to be 
calculated. The snapping point would be the middle between the two 
intersection points. Any idea?

Regards
Christina Bornträger