[mkgmap-dev] r2829 in the high-prec-coord branch

Mon Nov 18 22:58:25 GMT 2013

Hi Gerd, 

I have been noticing this for a long time. I am not using
adjust-turn-headings. I tried it some time ago and decided at that time
that it was not an improvement. I haven't tried high-prec-coord yet
although it is sounding like it might be pretty stable now so I might
give it a go! 

Colin 

On 2013-11-18 23:20, Gerd Petermann wrote: 

> Hi Colin,
> 
> yes, possible. Do you see these problems with the trunk version or with the high-prec-coord branch?
> Do you use adjust-turn-headings? I have to find out if that is still needed in the branch, and if yes,
> if it still works as expected.
> 
> Gerd
> 
> -------------------------
> Date: Mon, 18 Nov 2013 23:13:42 +0100
> From: colin.smale at xs4all.nl
> To: mkgmap-dev at lists.mkgmap.org.uk
> Subject: Re: [mkgmap-dev] r2829 in the high-prec-coord branch
> 
> Just a thought... could this also explain why I sometimes get told to "keep left" at an exit on a straight motorway, which is a redundant way of saying "do not take the exit"? I haven't been able to discover any logic related to the tagging or the geometry in the OSM data.
> Colin
> 
> On 2013-11-18 22:43, GerdP wrote:
> 
>> Hi all,
>> 
>> I've coded a replacement for the removeShortArcsByMergingNodes() method,
>> called removeWrongAngles().
>> It also replaces the code to beautify roundabouts.
>> Function:
>> 1) remove zero length arcs and
>> 2) remove wrong angles caused by rounding to map units
>> (both only in roads and the overlaying lines).
>> Up to now, the method accepts errors in angles of up to 30°, maybe 
>> this is going to change.
>> 
>> The problem with the wrong angles occurs very often in
>> roundabouts, but also in other places (causing zig-zagging)
>> It still removes extremely short ways (when all points are rounded
>> to the same point in map units)
>> 
>> Please let me know what you think about it.
>> 
>> Gerd
>> 
>> --
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