[mkgmap-dev] Problem in AngleFixer?

Thu Aug 8 14:11:48 BST 2024

Hi,

Am 2024-08-08 14:22, schrieb Ticker Berkin:
> Hi Thorsten
> 
> Is the problem still with node https://www.osm.org/node/27550903 and 
> ways
> 36138336 / 144732811

Yes. That's one.
Else see below.

> I've loaded this example and looked at the angles before and after 
> adjustment
> with my patch. From the south the way enters the node with heading 
> 161.6 and
> leaves with heading -16, giving an angle of 178.6 (almost straight). 
> The other
> way leaves with heading -32.4, giving a sharp angle of 15.4 degrees 
> that the
> logic will want to increase.
> 
> After the adjustments, the main way isn't changed and the other way is 
> given a
> new heading of -63 degrees.
> 
> In compactDir format the main way enters in seg 7 and leaves in seg 15 
> (direct
> opposite) and the other way now leaves in seg 13 (a clear segment 
> between the
> other exit). This, I thought, would be enough to get the turn 
> instruction on the
> correct road.
> 
> I've forgotten how some of the forward and reverse arc stuff works and, 
> if there
> is still a problem, I need to re-understand it to make sure that the
> manipulations that we do to the angles at a node make sense for all 
> routes
> through it

I don't know anything about the format.
Is there somehow a flag what is the main road, or is this navigation 
instruction purely based on the degree of the turn?
Because, I have more similar situations like here:
https://www.openstreetmap.org/#map=18/49.43041/10.99213

If you go from north to the south and have to turn right no instruction 
is coming, if you have to go straight forward, a "turn left" is coming.
Difference to the point above is, that the main road is make a turn 
right and the straight forward is a new, smaller way.

Regards,
Thorsten

> Ticker
> 
> PS: no ideal about your mail error
> 
> 
> On Thu, 2024-08-08 at 11:45 +0200, Thorsten Kukuk wrote:
>> 
>> Hi,
>> 
>> trying from another email account, with the other I always get an 
>> error
>> when trying to send to the mailing list:
>> TLS Negotiation failed: FAILED_PRECONDITION: starttls error (71):
>> 123617668315712:error:1000012e:SSL
>> routines:OPENSSL_internal:KEY_USAGE_BIT_INCORRECT:third_party/openssl/boringss
>> l/src/ssl/ssl_cert.cc:431:
>> 
>> 
>> I tried the patch from Ticker, it fixes routing problems with sharp
>> angles for me,
>> where previously Garmin devices would avoid the Junction.
>> But it does not fix the wrong turn instruction for me.
>> 
>> Regards,
>> Thorsten
> 
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