mike at mikecrash.com
Tue Dec 15 15:15:17 CET 2009
This is not a good idea. Rendering such amount of data will take a (long)
while, also there si problem where to save it (little memory and slow card),
also you need any map angle at any time. And rendering speed is not a big
problem, it seems to work fine (or at least satisfactorily).
Yorick Moko wrote:
> might be an idea worth considering:
> have the possibility to calculate a route, and pre-render the bitmaps of
> your route (at a few zoom-levels)
> This way it doesn't have to be done on the fly when you know for example
> where you are going to travel to
> when you don't follow the planned route it will of course render new files
> when nescessary
> you should also have the option to delete them afterwards of course
> or maybe a setting "two way trip";
> this setting wil save all the rendered files on your way to your
> use the pre-rendered images on your way back, and ask you if you want to
> delete them when you return home
> just an idea
> On Mon, Dec 14, 2009 at 10:32 AM, Mike Crash <mike at mikecrash.com> wrote:
>> Sure I'm using speed data from OSM and if not available, set it based on
>> type and common speeds. I can find shortest and fastest path. No
>> if road is in the city yet.
>> I made some progress in last days and I'm going to use it for the first
>> to drive home today :)
>> Bastian Muck wrote:
>> > -----BEGIN PGP SIGNED MESSAGE-----
>> > Hash: SHA1
>> > Mike Crash schrieb:
>> >> I use A* for routing, it is usable, but still not what I expect.
>> >> But I have some improvements in my mind :) I need to create
>> >> rerouting now and to test it in real life
>> > I don't have any idea, how the code looks like, but I guess, that you
>> > use gps-positions as heuristic and distances as edge-weights. That
>> > means that you always get the shortest path. If you want to get the
>> > fastes path, then you have to use timevalues calculated by possible
>> > speed and edge-length. With openstreetmaps that can be difficult,
>> > because many roads don't have any speedsproperties. You often only can
>> > use the roadtype depending on country to guess the speed.
>> > Maybe you used this, but in a first shit, I guess that you don't.
>> > I hope these ideas can help you improving your tool.
>> > Greetings Bastian
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