[mkgmap-dev] Commit: r3259: remove most checks regarding routable/non-routable types.

Fri May 9 11:17:56 BST 2014

Hi Minko,

I am still not sure if we are talking about the same stuff.
A routable line is one that has roadspeed/class and a non-extended type. These lines are internally called roads.
The algo in StyledConverter collects all lines (routable and not-routable) in different lists,
and after removal of wrong angles and obsolete points, all non-routable lines are added before all roads.
The order within the two different lists is maintained.
So, the order is only important if you add multiple non-routable lines or multiple roads for one OSM way .
Felix said he adds up to 7 lines for one OSM way, so we should find out which combinations are bad.

Gerd

> Date: Fri, 9 May 2014 12:09:14 +0200
> From: ligfietser at online.nl
> To: mkgmap-dev at lists.mkgmap.org.uk
> Subject: Re: [mkgmap-dev] Commit: r3259: remove most checks regarding routable/non-routable types.
> 
> Hi Gerd
> 
> 
> > just to make sure:
> > your style creates two lines for one OSM way, they have different
> > types, but both below 0x3f,
> 
> Well, it doesnt happen if 0x02 is replaced by 0x31. I think it only happens with "standard" routable line types (0x01-0x13, 0x16, 0x1a,0x1b) but i havent tested them all
> 
> > and one has road speed/class , the other has not.
> > Which one come first?
> 
> The ones with routing parameters come first. After this I handle the cycle routes with line 0x02 to make sure they are always rendered on top (on all GPS devices). I always needed to put on 0x02 routing parameters too because of this issue. I thought I might give it a try to remove them, but it seems the issue is still the case.
> 
> > I think when it causes problems, we should try to find a better
> > solution or print a warning.
> 
> A warning would be fine, in case multiple routable lines are detected.
> If that's too complicated, I would suggest to print the old warning only with --check-styles:
> "Non-routable way with routable type 0x.. starting at ... is used for a routable map. 
> This can lead to routing errors if multiple routable lines on this way are used."
> 
> 
> 
> 
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