[mkgmap-dev] [PATCH v1] Reduce number of cuts in multipolygon processing

Thu Feb 25 07:24:50 GMT 2010

Hi WanMil,

> This has two advantages:
> 1. The artefacts on the cut lines in Mapsource are reduced because  
> there are less cut lines.
> 2. The performance of the mp code for large multipolygons is very  
> much dependend on how many cuts must be performed.

A third advantage: the image file might be slightly smaller.

I found something strange in my test:

Error at line 2341764, col 41
Bad file format: 63240004.osm.gz
Exception in thread "main" java.lang.NullPointerException
	at  
uk.me.parabola.mkgmap.combiners.FileInfo.getFileInfo(FileInfo.java:136)
	at uk.me.parabola.mkgmap.main.Main.endOptions(Main.java:369)
	at  
uk.me.parabola.mkgmap.CommandArgsReader.readArgs(CommandArgsReader.java:124)
	at uk.me.parabola.mkgmap.main.Main.main(Main.java:122)

This would be the 'outer' in the following line:

<relation id='302404'>
<member type='way' ref='31755158' role='outer'/>

I will retest without the patch, and also test the patch with  
yesterday's dump.

	Marko