--- Mer 8/7/09, Mark Burton <markb@ordern.com> ha scritto:
Da: Mark Burton <markb@ordern.com> Oggetto: [mkgmap-dev] [PATCH v3] - beware of the bollards! A: mkgmap-dev@lists.mkgmap.org.uk Data: Mercoledì 8 luglio 2009, 00:03
v3
now adds extra points either side of the POI to reduce length of way that has restricted access. Currently points are 25m away from the POI. It would be nice if they were really close (like 5m) but if you try that, the map looks crap due to the limited coordinate resolution. So, 25m is a compromise between visual appearance and minimising the extent of the restricted zone.
Why either side? shoudn't be enough one side only for restrict the access to the whole way? I hope you force the add of an extra node in the way only if another point within 25m does not exists already... moreover, if a point exist in the way between 25m and 50m, you shoud add the new node by cutting the arc in 2 (otherwise you have a 25m arc on a side and a shorter arc on the other. so, my proposal might be: the first point from the barrier is at a distance <25m: use the existing node
25m & <50m: put a new node in the middle 50m: add a node at 25m.
Marco.
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v2 - quick update based on instantaneous feedback from ML!
Now works for any POI that sets "access=no" (could use the more general test of any of the access tags being set but let's see how this works for now).
Default access rights now set in style file.
Any suggestions for a better code for cycle_barrier?
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Fed up of being routed in your car down city streets only to find the way is blocked by a bollard? Well, if so, this is the patch for you.
If a way has a bollard on a point, the segments of the way that connect to the bollard have access restrictions placed on them. By default, a bollard implies: access=no, foot=yes, bicycle=yes.
Testing using mapsource shows that it generally works as expected although if the destination cannot be reached by any other route, it routes straight through the bollard rather than failing! If the destination can be reached by some other route, even if the route is really long, it will avoid the bollard.
I have chosen Garmin code 0x660f (pillar) for the bollard. On my etrex it appears as a small dot in the way.
As usual, all feedback is welcome.
Cheers,
Mark
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