On Apr 21, 2008, at 2:17 PM, Melchior FRANZ wrote: > * Adam Dershowitz -- Monday 21 April 2008: >> I did make the minor change that Alex suggested in this discussion: >> [...] >> and then rebuilt and it seems to be working. Is that essentially >> the change that you were referring to? > > It's the correct thread. The fix isn't and will probably cause other > problems (jitter in some newer view modes, IIRC), but as long as it > works for you, all is well. :-) > > m. >
I have run into what might be different issue...and might be what you are talking about. With playback data the ground slightly jumps back and forth. It looks almost like a vibration. It seems to happen with all of the views. At first I thought that it had to do with how smooth my Lat/Long data was, so I tried fixing that. But it didn't help. So I finally just did a recording of a simple takeoff at high frequency, with everything at the defaults: fgfs --generic=file,out,32,/Users/dersh/Documents/Cases/587\ Animation/DFDR\ data/test_out.csv,playback and then did a playback: fgfs --generic=file,in,32,/Users/dersh/Documents/Cases/587\ Animation/DFDR\ data/test_out.csv,playback --fdm=null and I get this "jitter" of the ground back and forth on playback. It is not much (perhaps a couple of feet back and forth). I started to wonder if it might be that the code that reads in the lat/long is not reading in enough significant digits? Internally clearly there are enough because it looks smooth when I am recording. Is there some rounding, or reading in as float instead of a double? Any ideas on this one? Is it the same bug that was fixed in CVS? I have not yet tried to rebuild from CVS since Alex's suggestion to change the order of: globals->get_viewmgr()->update(delta_time_sec); upwards after the line fgUpdateTimeDepCalcs(); seemed to be working for me. But did I hit another issue related to this? Melchior, is this also what you fixed? I am a little nervous about doing a new build because I am using Tat's download/build instructions for a Mac and then I applied Pigeon's patch to capture video. All seems to work, but I am not sure which pieces of that process might break if I do a full CVS update and rebuild. That is also why I have stayed with PLIB. --Adam ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
