[mkgmap-dev] Making splitter and MultiPolygon code play together

Wed Feb 3 12:13:17 GMT 2010

It's not a straightforward fix in the splitter however I'll see what I can 
do. I think if I make the cache generation compulsory it will be possible 
to handle this without too serious an impact on performance.

Chris

MM> On Tue, Feb 02, 2010 at 11:34:50PM +0200, Marko Mäkelä wrote:
MM> 
>> I can suggest two solutions to this issue:
>> 
>> * splitter should flag and preserve all nodes that belong to ways
>> that belong to multipolygon relations (I would not care about route
>> relations, for example)
>> 
>> * mkgmap should discard multipolygon relations that consist of only
>> one way
>> 
MM> I implemented the latter in r1555, and the fix makes the warnings
MM> for one of the three multipolygons go away.  Splitter should still
MM> be fixed.
MM> 
MM> A fairly cheap work-around in mkgmap could be to discard those ways
MM> whose resolvable nodes completely fall outside the bounding box when
MM> some of the nodes cannot be resolved.
MM> 
MM> Marko
MM> 