[mkgmap-dev] [PATCH v4] Multipolygon code enabled for overlapping lines

Sun Feb 14 20:25:57 GMT 2010

Hi WanMil,

> Compared to v3 (posted by Carlos in thread "Wrong multipolygon
> warnings") some unused debug messages have been removed.
> 
> The patch enables the multipolygon code to process multipolygons with  
> overlapping lines.

For the Geofabrik Finland extract of today, the patch reduces the  
amount of log output from 198129 to 195563 bytes.

If I specify --generate-sea=multipolygon I will get 1887595 bytes of  
log, including 3814 warnings 'is not processed due to an unknown  
reason'.

Normally, I get only one 'unknown reason' warning, for a monster  
multipolygon that I created some days ago:  
http://www.openstreetmap.org/browse/relation/404644

WanMil, can you please take a look at that multipolygon and improve the  
code or diagnostics? That multipolygon could be easily split near  
Ihanteensalo, but I will leave it as is for now, so that the problem  
can be diagnosed.

	Marko