[debian] navit: rendering is slow

Fox Mulder Quakeman1 at gmx.net
Sun Jan 4 12:40:00 CET 2009

Petr Vanek wrote:
> On Sat, 03 Jan 2009 23:47:59 +0100
> Fox Mulder <Quakeman1 at gmx.net> (FM) wrote:
>> Petr Vanek wrote:
>>> On Mon, 29 Dec 2008 21:38:51 +0100
>>> "arne anka" <openmoko at ginguppin.de> (AA) wrote:
>>>>> i use navit on regularly routes over 120km with no performance
>>>>> problems on SHR (voice enabled).
>>>> - which gui?
>>>> - which version?
>>>> - which map (size of area covered)?
>>>> - care to post your navit.xml?
>>> i have been using navit on freerunner a lot lately and really love
>>> the new 3D view (although the latest build moved the view from front
>>> to back :) (i suppose this is due to wrong cursor orientation).
>> How do you switch to 3D view in navit?
>> The only option which changes the view is the menu entry for
>> "projection". But none of the two selectable views looks like the 3d
>> pictures on the navit homepage. And in navit.xml i can't find any 3D
>> options.
>> So please light me up a bit. :)
>> Ciao,
>>     Rainer
> i use svn versions, right now navit - svn-1882
> this is my feed:
> src navit
> http://download.navit-project.org/navit/openmoko/svn 
> The 3D option is in the menu Settings -> Display -> 3D
> When it first appeared about a week ago it was really different from
> what 3D should be but after update yesterday it already does have 3D
> look. "only" (as i mentioned already) it seems to travel in wrong
> direction.

Now i see what you meant in navit (1885).
Only in the gui "internal" the setting 3D exist, not in the gui "gtk".
Now when i click on 3D and change back to the map it is showm in 3D mode.

But the problem is that the map is veeeeeeeery slow in 3D mode. I tried
it on my pc first and it needed ~5s to drag the map from A to B. I think
the problem is that in 3D mode navit still shows all items on the map
which results in overfilling at the horizon. I attached a screenshot
from my pc which shows the problem.

I played a bit with the tilt="..." parameter in navit.xml which should
adjust the tilt of the 3D view but it seems to have no effect. Also i
can't find any parameter to adjust the viewdistance for items on the map
or the map itself which should increase the speed a great bit.

What settings do you use that it is acceptable fast when you are using
the 3D view on your freerunner?

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