--- Log opened Wed Jul 26 00:00:02 2017
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08:55 #navit: < t_> hey
08:56 #navit: < t_> am having some trouble running navit on rpi 2
08:56 #navit: < t_> it shows maps but after 2-3 mins of launch it crashes
08:56 #navit: < t_> can anyone help me
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12:05 #navit: < kaonit> hi can anyone tell me the minimum RAM memory required for navit to run
12:05 #navit: < kaonit> ?
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15:13 #navit: <@KaZeR> hi there
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16:40 #navit: < jfitie> hi
16:40 #navit: < jfitie> @kazer: got a sec?
16:43 #navit: < jfitie> my suspicion about pitch needed a correction for display resolution was correct
16:43 #navit: < jfitie> p=ROUND(20*SQRT(320*240)/SQRT(x*y)) seems to solve the issue
16:44 #navit: < jfitie> pr at https://github.com/navit-gps/navit/pull/303; screenshots @ https://github.com/navit-gps/navit/pull/303#issuecomment-318112067
16:45 #navit: < jfitie> now to change the pseudocode to some real code :-)
16:46 #navit: < jfitie> as you can see in the screenshots, which all have a different resolution and aspect ratio, using the 'corrected pitch' makes them all look the same
16:46 #navit: < jfitie> ps. didn't get the screenshots to work on cicleci, so did this on my local machine
16:58 #navit: <@KaZeR> thanks jfitie looking at it. I'll also look at fixing the screenshots on CI
17:01 #navit: <@KaZeR> jfitie: since you dug into the transformation code, it would be great if you could improve the relevant code documentation with what you learned (eg. Doxygen headers, etc)
17:02 #navit: <@KaZeR> so it looks like the PR is currently more about discussion than merging, correct ?
17:04 #navit: < jfitie> WIP, so working on it :-) .. Just did another commit, care to take a quick look? The fix could be as simple as this; https://github.com/navit-gps/navit/pull/303/files#diff-72d126e3125c51bb250ef2bcbe494d87R3431
17:04 #navit: < jfitie> What are your thoughts after looking at the screen shots?
17:05 #navit: <@KaZeR> they look convincing
17:05 #navit: <@KaZeR> also, why restrict this to android?
17:09 #navit: < jfitie> True, we could use this as a default
17:11 #navit: < jfitie> ok -- https://github.com/navit-gps/navit/pull/303/files
17:12 #navit: < jfitie> darn.. all this work for just one changed line ... :-p
17:18 #navit: < jfitie> We'll see if this compiles, and if it does I'll re-run my tests without correcting the pitch (use default value of 20) and see if the results are the same as those in the pr
17:38 #navit: <@KaZeR> haha yeah sometimes fixing just one line can take so much time.. but it also can improve things a lot!
17:50 #navit: < jfitie> hmmmm
17:50 #navit: < jfitie> almost, but not quite
17:50 #navit: < jfitie> https://github.com/navit-gps/navit/pull/303#issuecomment-318131046 -- at least they look the same, but the angle is different
18:00 #navit: <@KaZeR> i'm not sure what the last 3 screenshots are trying to highlight
18:01 #navit: <@KaZeR> some pitch values also only make sense at lower zoom level, otherwise the map is hard to read
18:03 #navit: < jfitie> The last 3 screenshots are runs with this change https://github.com/navit-gps/navit/pull/303/files . I was expecting results similar to the first series of screen shots. Same angle for all resolutions. Instead, the angle is the same for all 3, but the angle is different from the first series of screenshots. Manually setting pitch=20 in navit.xml gives the same results as the first series.
18:04 #navit: < jfitie> in my code 'this->pitch=round(20*sqrt(320*240)/sqrt(this->root.w*this->root.h));' Should return 20 for a resolution of 320x240... it does not...
18:05 #navit: < jfitie> I've turned on debugging, and this->root.w=240 and this->root.h=320 .. So round(20*sqrt(320*240)/sqrt(240*320)) should indeed be 20 --> https://www.wolframalpha.com/input/?i=round(20*sqrt(320*240)%2Fsqrt(240*320))
18:15 #navit: < jfitie> mmm.. navit.log: 'debug:gui_internal:gui_internal_apply_config:w=240 h=320' .. quick test of ' printf ("%.0f\n", round((20*sqrt(320*240)/sqrt(240*320))) ); '     returns 20 as expected ...
18:28 #navit: < jfitie> Let's see what happens using the debug log; https://github.com/navit-gps/navit/pull/303/files#diff-72d126e3125c51bb250ef2bcbe494d87R3431
18:53 #navit: < jfitie> debug:gui_internal:gui_internal_new:w=0 h=0 pitch=-2147483648
18:55 #navit: < jfitie> I'll probably move the logic to gui_internal_resize
19:14 #navit: < jfitie> or not, as that won't work :-)....     https://github.com/navit-gps/navit/pull/303#issuecomment-318153224
19:16 #navit: <@KaZeR> pitch=-2147483648 : looks like a type issue (float/int)
19:17 #navit: < jfitie> it's because window size is not set yet and both w and h are 0 ..
19:17 #navit: < jfitie> not really sure yet how to fix this
19:22 #navit: < jfitie> -2147483648: https://stackoverflow.com/questions/3986795/what-is-the-result-of-casting-float-inf-inf-and-nan-to-integer-in-c
19:22 #navit: < jfitie>  /0   :-)
19:25 #navit: <@KaZeR> haha indeed
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20:27 #navit: < jfitie> @kazer how do I get the window x and y sizes inside transform_setup_matrix (transform.c)?
20:36 #navit: < jfitie> https://github.com/navit-gps/navit/pull/303/files#diff-566f77ab83fc5b075f55c56579774d23R815
20:56 #navit: < jfitie> new url: https://github.com/navit-gps/navit/pull/303/files#diff-566f77ab83fc5b075f55c56579774d23R90
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23:24 -!- pmckinley [~Peter_McK@88-110-196-96.dynamic.dsl.as9105.com] has joined #navit
23:25 #navit: < pmckinley> Where's Michael?
23:25 #navit: < pmckinley> Hey @KaZer
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23:38 #navit: <@KaZeR> hey pmckinley !
--- Log closed Thu Jul 27 00:00:04 2017