[mkgmap-dev] Distorted lines

Mon Feb 17 21:14:52 GMT 2014

Hi Andrzej,

sorry, the 10% smaller size is also not intended, I thought you compared with trunk.

The way 101876024 is an extremely small building, but you seem to map it as a line?
The algo is not prepared for that.

Gerd

From: gpetermann_muenchen at hotmail.com
To: mkgmap-dev at lists.mkgmap.org.uk
Date: Mon, 17 Feb 2014 22:07:28 +0100
Subject: Re: [mkgmap-dev] Distorted lines

Hi Andrzej,

> 
> That was fast. Result is much better, thanks!
> 
> Can we fine-tune effect using option --reduce-point-density?

no, but maybe I will add parameters for the hard coded threshold values later. 
> 
> Some observation:
> 
> Map size seems to be nearly 10% less, compared to latest release r3057.

yes, that is intended.  

> 
> I get many warnings like this:
> SEVERE (WrongAngleFixer): pbf\29487111.osm.pbf: non-routable way 
> 101876024 was removed

that is not intended :-(
Please let me know how I can reproduce that.

> 
> And some like this:
> SEVERE (WrongAngleFixer): pbf\29487111.osm.pbf: Removing wrong angles - 
> didn't finish in 10 passes, giving up!
that also should not happen.
Please let me know how I can reproduce that.

> 
> There is difference in processing of non-routable lines and polygons, 
> now outline of a building doesn't match polygon shape. I guess one 
> change leads to another and probably would be good to apply your updates 
> to processing polygons too.

Yes, the algorithm for lines is different to that for shapes, and I can't simply
use the same at this moment. I plan a big change later to allow it, but will
not do it in the high-prec-coord branch. 

Gerd

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