[mkgmap-dev] Help from the style file gurus

Sat Jan 2 23:58:18 GMT 2010

On 02.01.2010 15:44, Charlie Ferrero wrote:
> Bump...has no-one else managed to solve how to represent one-way bridges?
>
> Charlie Ferrero wrote:
>    
>> Hello list,
>>
>> Question #1
>> ===========
>> I am using the overlays style file in combination with a TYP file to
>> define custom styles for one-way streets (overlaid blue arrows in the
>> direction of the one-way, type 0x10), and for bridges (two parallel
>> lines outside the road, type 0x12).  This all works fine.  Where I'm
>> stuck is when I have a one-way street that is also a bridge.  I had
>> assumed that the stop/continue system would help me here, but sadly it
>> doesn't work as I expected.
>>
>> The following are my style rules  for trunk roads:
>>
>> #lines file excerpt:
>> highway=trunk&  (bridge=yes | bridge=true) [0x111 resolution 16 continue]
>> highway=trunk&  oneway!=* [0x02 resolution 16 stop]
>> highway=trunk&  (oneway=yes | oneway=true) [0x123 resolution 16 stop]
>>
>> #overlays file excerpt:
>> 0x111: 0x02, 0x12
>> 0x123: 0x02, 0x10
>>
>>      
This code is rubbish (or 10x more complicated then needed).

Use instead:

highway=trunk&  (bridge=yes | bridge=true) [0x12 resolution 16 continue]
highway=trunk&  (oneway=yes | oneway=true) [0x10 resolution 16 continue]
highway=trunk  [0x02 resolution 16]

>> Applying these rules results in one-way bridges having the bridge
>> styling, but no one-way symbols (see attached screenshot; the fact that
>> the railway is plotted on top of the bridge is quite another problem).
>>      
There is no possibility to influence what line is drawn on top of 
another. Also Mapsource does it in the opposite order to many (but not 
all ) GPS units.
>> Can a style guru point me towards where I'm going wrong?
>>
>> Question #2
>> ===========
>> Does the stop/continue system work across style files?  In other words,
>> if I've got a polygon that is tagged:
>> sport=tennis
>> barrier=fence
>>
>> And in my style files I've got:
>> #lines
>> barrier=fence [0x2d resolution 23 default_name 'Fence']
>> #polygons
>> sport=* [0x19 resolution 23]
>>
>> mkgmap by default will process the lines file first and plot the fence.
>>   It will not then process the polygons file, so all I see in the
>> resulting map is a fence.  Can I use continue/stop (once I've learned
>> how to use it properly) to plot both the fence and the area?
>>      
Yes, but be careful. You will get many duplicate polygons if you don't 
severly watch out.
>>
>> Thanks,
>>
>>      
>    