[mkgmap-dev] Resurrect adjust-turn-headings

Fri Sep 18 17:55:43 BST 2020

Hi Ticker,

maybe try first to disable the AngleChecker with --ignore-sharp-angles. Next, I'd try to disable the compacted format in
RouteNode, search for useCompactDirs.
The original code in tweezeArcs() was written at a time where the encoding of the heading values was completely misunderstood.

Gerd

________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
Gesendet: Freitag, 18. September 2020 15:40
An: mkgmap development
Betreff: [mkgmap-dev] Resurrect adjust-turn-headings

Hi

I use mkgmap/Garmin a lot for road routing and driving and frequently find cases where
1/ exit roads cause pop-ups telling me to turn to stay on the main road.
2/ an obvious turn is needed to stay on the same road and no pop-up is generated.

These were some of problems that --adjust-turn-headings with code in
RouteNode.java::tweezeArcs() was designed to solve.

I'd like to have a go at reinstating it and tweaking it a bit to see if I can overcome some of the problems mentioned in some of the threads, eg

http://gis.19327.n8.nabble.com/Possible-problem-with-adjust-turn-headings-td5851790.html
http://gis.19327.n8.nabble.com/What-is-the-idea-behind-adjust-turn-headings-td5851885.html

before it was removed in r3649.

I'm considering putting the code in imgfmt/app/net/AngleChecker.java

Case 2/ can have further complications because OSM doesn't provide information when you have to give way as you turn to stay on the same road.

Another pop-up I'd like to see is the minor road you wish to stay on is intersected by a more major road and you have to give way. Does anyone know if there is any way of triggering this?

Ticker