Hello Marcus, On Wed, Apr 1, 2009 at 4:05 PM, <[email protected]> wrote:
> > Hello Iulian! > > > On Wed, 1 Apr 2009 07:50:19 -0400, Iulian Banaga <[email protected]> > wrote: > > At that time I thought that one of the best solutions to do all of these > > tasks is Navit. > > Wasn't Android Java-only or is there support for applications in C? > You can create C/C++ libraries and call them from Android (this is actually something that I took in consideration but I didn't go further because until now the performace of the Java VM is satisfactory). What I have done so far is 100% Java code but it uses a lot of the ideas from Navit (not the actual code). > > > I studied the application in more detail and I choose o > > use the same model for data. I had to write my own converter from OSM > > format > > to my own binary format. > > What was your motivation to use your own binary format? > > Did you look at OsmBin? > What was the shortcommint in Navit's format? > As I said my format is based on the Navit's one, and I can say that these are 80% similar. How did I choose this format? The fact that this app will run on mobile devices that are limited in terms of memory and CPU I tried the existing routing applications on my desktop and I was looking for the fastest renderer and in the same time one renderer that looks good. At that moment Navit seemed the fastest so I spent some time to understand the ideas that Navit is using to render. > > > Right now I am starting on the routing part and I am ready to > incorporate > > some ideas from Navit. Besides that I believe I will have to use some > ideas > > presented in Gosmore and TravelerSalesman. > > Can you elaborate on this some more? > What ideas do you want to combine? > First of all I was thinking about getting support for routing restriction in my app, and Nic (Roets) have done a great job with Gosmore about these. From TravelingSalesman I might use the idea of creating a routing interface that will be implemented by different algorithms. Both these ideas will probably be taken into consideration in the second part of GSOC timeline (starting July) as I would like to concentrate on getting basic routing functionality until the mid-term evaluation. > > > It will be very nice if I will be accepted for GSOC 2009, as this > > application will definitely get finished in time as I will sustain my > > bachelor thesis in late June. I am waiting for any ideas on the routing > > engine as this is the part that will be most wanted by the end users and > > also the part that will probably require the most time to be able to get > > results in a reasonable time on a mobile device. > > Marcus > Thanks, Iulian
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