Hello, http://wiki.openstreetmap.org/index.php/Relations/Proposed/ Area_with_holes contains a proposal for an alternative to the current multipolygon relation. Please tell me what you think about it. Am I missing something?
In short, the proposed changes are the following: type=multipolygon -> type=area_with_holes role=outer, way, clockwise -> role=boundary, way, clockwise role=inner, way, anti-clockwise -> role=hole, way, clockwise same tags on inner and outer ways; these describe the multipolygon -> tags on boundary describe the area, tags on hole describe the hole This would also solve the naming ambiguity, though my aim is mostly to make things easier to tag. In particular, with the proposed relation, it's not necessary to create duplicate ways (clockwise and anti-clockwise) for holes with properties. I'm actually in favour of dropping orientation restrictions completely: The area corresponding to a closed way should be the closed area it bounds in, say, the hemisphere all nodes lie in. However, as it stands, the proposal should be straightforward to implement for any renderer that can deal with the multipolygon relation. Cheers Robert _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
