--- Log opened Tue Sep 20 00:00:53 2011
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09:08 <@Horwitz> morgen
09:25 < Number6> Morning
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13:02 < GosuBuster> Hi everyone! I started to code a little bit using navit and I like it very much. I'm wondering how this blue line is drawn after I have set a position and a destination. I can see that a route graph and a route path is created after setting the destination, but I don't understand where in graphics.c the path is drawn. Does this displaylist struct contain the path?
13:04 <@cp15> GosuBuster, the route is actually a map which is created by the routing code
13:04 <@cp15> So the display code for the route path isn't different from for example displaying a street
13:05 <@cp15> If you go to settings/maps you can see there is a route map, if you disable it the route disappears
13:10 < GosuBuster> thnx cp15, that will probably help me a bit! :)
13:10 <@cp15> May I ask what you are planning to do?
13:12 < GosuBuster> I'm trying to paint the driven distance to another colour and storing it
13:14 <@cp15> The driven path?
13:14 <@cp15> Because for that there is already code
13:14 < GosuBuster> yes
13:14 < GosuBuster> really?
13:14 < GosuBuster> but is there something that paints the driven path?
13:15 < GosuBuster> or just something that stores the driven path?
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13:17 <@cp15> Both... You can add a <log type="binfile" data="pathlog.bin" /> to the vehicle tag and then add pathlog.bin as map to your mapset
13:20 < GosuBuster> wow, that's amazing!
13:20 <@cp15> It also has a douglas peucker simplification built in, the number of points will be reduced after recording of 1024 points
13:21 < GosuBuster> I must test that and see the results :)
13:21 < GosuBuster> thnx a lot
13:23 <@cp15> Another question. I have seen you are from sweden. We could use a swedish navit key user. Could you sign up at our wiki http://wiki.navit-project.org (please add your email at signup) and create an user page with a user box like here: http://wiki.navit-project.org/index.php/User:Cp15
13:26 < GosuBuster> Cool, I will do that. But have in mind that I'm still quite new to navit. :)
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13:39 <@cp15> No problem, it is just for cases where we need someone whith knowledge of swedish or sweden
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15:14 < GosuBuster> Does anyone know where to change the color and the width of the route path (blue is default)?
15:16 <@cp15> Look into navit.xml for street_route
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15:30 < zaatlob> saw that the new version of navit on android is much smaller. Is a major improvment in my opinion
15:30 < zaatlob> keep up the good work :D
15:35 <@cp15> zaatlob, thanks :-)
15:35 <@cp15> Now even app2sd should work
15:35 <@cp15> Well, actually you have to thanks Rikky
15:35 < zaatlob> did already work with the app2sd app.
15:36 < zaatlob> but you need a rooted phone in that case
15:36 <@cp15> I am not sure whether it actually will gain much, since the shared libraries which need quite some space still need to reside on the flash
15:36 < GosuBuster> cp15, worked like a charm :D
15:37 <@cp15> On the other hand they only need to do that once with app2sd
15:40 < zaatlob> @cp: at least this version i could install without diffilculties.
15:40 < zaatlob> the last one i had to do some tricks
15:46 <@cp15> What tricks?
15:53 < GosuBuster> cp15, do u know how to apply styles to my routed path which is stored in pathlog.bin?
15:59 <@cp15> It is currently hardcoded to "track" as type, so you need to change the appearance in navit.xml looking for item_types="track"
16:07 < zaatlob> @cp15: i had to fix permisions with rom manager, because otherwise the memory was insufficent.
16:12 < zaatlob> bey
16:12 < zaatlob> bye
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16:26 < GosuBuster> is it possible to see the logged track in realtime?
16:28 <@cp15> Yes, of course. But you need to set follow="1" for the vehicle so the map follows the vehicle and gets redrawn at each update
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16:37 < GosuBuster> I added the follow parameter and set it to 1, but I can't see the logged path in realtime. I have to restart navit each time to see the logged path.
16:37 < GosuBuster> also using the demo vehicle
16:41 <@cp15> I will try it out, there might be a bug
16:42 < GosuBuster> thnx for your time!
16:52 <@cp15> Yes, there is a bug, but there is a workaround: Add check_version="1" to the map tag for the track.bin map
16:56 < GosuBuster> worked like a charm. thnx a lot, cp15. :)
17:00 <@cp15> Of course a gui function to do all this would be nice
17:00 <@cp15> If you have spare time and interest it would be good if you could work on this
17:03 -!- korrosa [c30285b6@gateway/web/freenode/ip.195.2.133.182] has joined #navit
17:04 < korrosa> Afternoon.
17:04 < korrosa> [TRAC] New ticket http://trac.navit-project.org/ticket/938 "poor display on-screen keyboard"
17:05 < korrosa> [TRAC] New comment "hurry up!" http://trac.navit-project.org/ticket/754#comment:11 "Multipolygon relations not handled correctly"
17:05 < korrosa> END
17:07 < korrosa> cp15: We missing a Swedish flag on purpose?
17:08 <@cp15> No, I haven't found one on the osm wiki
17:09 < korrosa> Adding it now...
17:10 < korrosa> Done.
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17:14 < GosuBuster> cp15, u mean inside the internal_gui or creating a osd?
17:14 < GosuBuster> nice with swedish flag. :D
17:15 <@cp15> Internal gui
17:16 <@cp15> Of course enabling/disabling it via osd would also make sense
17:19 < GosuBuster> cool, sounds like a good starting. :)
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17:59 < panda81> hi cp15. How do I conver the coordinate pairs in the binary file to lat/lon
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18:21 < zoff99> hi
18:30 < Number6> Hello
18:33 < panda81> hello
18:34 < Number6> Hello... Is it me you're looking for? And I wonder who you are...
18:36 <@cp15> and I wonder what you do
18:37 < Number6> Are you sometimes feeling lonely? Or is someone loving you?
18:37 <@cp15> tell me how to win your heart
18:37 < panda81> No, map rendering keeps me off the street
18:37 < Number6> 'Cause I haven't got a clue
18:38 <@cp15> but let me start by saying
18:38 < Number6> I love Objective C
18:38 < zoff99> i stoped wondering long ago
18:39 < zoff99> anybody wanting to solve the "relations" problem, in maptool?
18:40 < Number6> You won't trick me that easily, cp15
18:40 < Number6> Not after last time
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18:40 < korrosa> panda81: Just for you: http://wiki.navit-project.org/index.php/FAQ#Weird_coordinates_in_bookmarks.txt_and_centre.txt
18:40 < zoff99> korrosa: hello
18:41 < korrosa> Hi zoff99!
18:41 < zoff99> korrosa: how did you creep in here, without me noticing?
18:41 < korrosa> Still a ninja.
18:42 < zoff99> do u have a secret door into this channel?
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18:44 < panda81> oh cool I saw the link cp15 and korrosa. What is 6371000. Is that equivalent to one PI
18:44 < korrosa> panda81: Circumference or radius of earth or something like that...
18:44 <@cp15> radius
18:44 < Number6> radius
18:44 < korrosa> radius
18:45 < zoff99> *oink*
18:48 < panda81> Then, the INT in the formula INT/6371000.0/PI*180 must be in the range +-6371000?
18:48 <@cp15> No, INT is the coordinate value
18:49 < zoff99> relations issue, anyone? does this bother nobody?
18:50 < panda81> The output of INT/6371000.0/PI*180 should be within +- PI because it's a longitude value right. Hence INT should be within +-6371000
18:51 < panda81> sorry, I meant +-180 instead of +-PI
18:52 <@cp15> Which makes it roughly +- 20 000 000... The earth circumfence
18:52 < korrosa> WHICH IS WHAT I SAID!!! RIGHT GUYS? GUYS?
18:52 < panda81> oh yes you are right. It's a divide by PI in the formula
18:53 < panda81> you said radius
18:54 < panda81> and cp15 said radius
18:54 < zoff99> korrosa: yeah, u da man :)
18:54 < zoff99> i said *oink*
18:57 < panda81> how does this work. circumference = 2*PI*radius. There is no 2 in the formula above
18:59 < zoff99> maybe the "2" is within the "180" ?
19:00 < korrosa> panda81: I'm sure it's got something to do with converting degrees to radians...
19:00 < zoff99> who cares? its a formula
19:01 < korrosa> panda81: Are you managing to convert the coordinates you need with the info from the wiki? I wrote it but haven't had any feedback yet on whether it's useful....
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19:02 < panda81> I'm interested in map rendering and learning what's out there. Navit having a binary format definitely is very useful
19:05 < Number6> All of computing is based on maths. We rely on the fundamental principals of maths to even get the computer to boot up!
19:05 < korrosa> ....physics.
19:05 < Number6> Which is a form of applied maths
19:06 < panda81> I think there should a 2 if INT goes from 0 to 24,000,000. Such as INT/(2*6371000*PI) * 180
19:06 < zoff99> now really, u are hurting my ears
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19:06 < zoff99> are we going back to the book of genesis now also?
19:07 < Number6> Yes, please. I can school you in the old testament
19:07 < panda81> nevermind I think I'm wrong. Nerd spam ends here hehe
19:07 < Number6> Along with maths, applies maths, stats, chemistry, physics and computational fluid dynamics
19:08 < zoff99> Number6: better fix the relations issue, instead of reading up on the bible
19:08 < zoff99> that be more useful
19:09 < zoff99> and the lord with thank thee
19:09 < zoff99> will
19:10 < panda81> what's wrong with relations
19:12 < Number6> Have you ever met my in-laws? :-P
19:13 < panda81> I noticed there is no attrib equivalent page for http://wiki.navit-project.org/index.php/Item_def.h. Isn't relations just a bunch of attribs in and item
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19:15 < panda81> * bunch of attribs in AN item
19:19 < zoff99> not really
19:19 < zoff99> OSM relations are not really fully supported in navit(maps) yet
19:25 < panda81> ah then the relations you mention must be something else
19:28 < panda81> another thing about the INT/6371000.0/PI*180 formula. Since INT is an integer kilometer value, how do you represent any node or POI with fractional kilometer value
19:33 < korrosa> Because degrees!=kilometres?
19:33 < korrosa> Is this a test?
19:34 <@cp15> it is a meter value
19:34 < zoff99> wanna go out and fight it out?
19:38 < panda81> oh that makes sense. So the data is accurate to meters
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19:42 < panda81> 32bit int goes to about +- 2.15 billion. More bits are available for data accuracy if we need it. Then again, I don't know what's the accuracy of typical gps devices
19:43 <@cp15> ~  10 meters... For the map 1m is ok, but internal calculations could sometimes use more precision
19:44 <@cp15> And the units are just at the equator 1m, they decrease with the lattitude
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19:44 <@cp15> At the pole they are 0, so it is impossible to display them
19:53 < panda81> I see. Then the number 6371000 is a convention, though it should really be the radius of the longitude circle at a particular latitude
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19:55 < panda81> This way, we use meters as unit regardless of latitude.
19:56 < panda81> Wonder if gps units report such pair of integer coordinates like Navit. It would skip over floating point issues of lat/lon.
19:57 <@cp15> The coordinates are in a mercator projection. This projection makes squares always square-shaped
19:59 < panda81> it sounds like mercator projection is same as texture mapping a sphere in typical graphics APIs
20:00 < panda81> oh wait the math is complicated, so unlikely.
20:03 <@cp15> Do you have experience with opengl?
20:03 < panda81> I was thinking of a simple phi/PI * circumferenceOfEarth to arrive at the integer numbers I see
20:03 < panda81> yes
20:04 <@cp15> Great. Maybe you could help improving the navit opengl driver?
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20:05 < korrosa> cp15's in full-on recruitment-drive-mode today!
20:05 < panda81> what does that do.
20:06 <@cp15> ?
20:07 < panda81> the opengl driver
20:07 <@cp15> Well, what every other graphics driver in navit does: Rendering the map and the menus
20:08 <@cp15> But of course opengl would allow much more things: 3d landmarks and buildings, considering elevation when rendering maps and so on
20:09 < panda81> ah I thought it was already opengl since it's Linux based.
20:10 <@cp15> Opengl is one option, gtk, qt, win32, sdl, cocoa, android and gd are some others
20:10 < panda81> what's the road map for the more advanced features you speak of
20:11 <@cp15> There is no strict roadmap
20:12 < Number6> You do what cp15 says, or he puts you in the coal mine. If you please him, he will sing Lionel Ritchie to you
20:13 < panda81> Haha. And I'll be Number7 in the mine?
20:15 < panda81> Alright. I haven't bothered with the code since I was looking at file formats and if what I know of OGL is sufficient. What's the typical rendering? Line draws? Polygons
20:16 <@cp15> Polygons
20:16 <@cp15> Line objects are converted to polygons if they have a width > 1 pixel, since most graphics systems aren't capable of drawing lines with varying width
20:18 < panda81> What about a road with a border color
20:19 <@cp15> It is currently drawn twice, first timer with a bigger linewidth, second time with a smaller one
20:19 <@cp15> Which isn't quite efficient since the body is actually drawn twice
20:21 < panda81> any special handling of intersections
20:21 <@cp15> No
20:26 < panda81> ok. I will ask you for rendering questions when my lookings direct me to it. Isn't there too many apis for drawing
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22:41 < womml> Hi, can I get the label of the pois in the map?
22:42 < woglinde> hm?
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--- Log closed Wed Sep 21 00:00:53 2011