Re: [Flightgear-devel] Generic Headshake/G-compression
Ron Jensen wrote: Sent: 20 April 2008 21:30 On Sun, 2008-04-20 at 12:55 -0700, Stuart Buchanan wrote: Hi All, Enthused by a comment on the forum by snork (http://www.flightgear.org/forums/viewtopic.php?t=1333), I've been working on an extension to the generic blackout/redout script which attempts to simulate the feeling of compression due to g-forces, by moving the pilot viewpoint vertically depending on the apparent g-force. This is a simplified version of what vivian, Josh et al. created for the Buccaneer and other aircraft. Of course, the main advantage of this is that it is completely generic, and pretty lightweight too. The overhead ontop of the redout/blackout is minimal: one extra property read/write per frame, only when the feature is enabled and in cockpit view. A patch for this is available from http://www.nanjika.co.uk/flightgear/headshake.patch Comments are very welcome, but I'm particularly interested in peoples views on the following: 1) Obviously this duplicates some aircraft-specific code, and one can argue that this sort of feature is only important for high-energy jets, where it should be modelled in more detail than I have done. I've been playing with this code on the Stampe, A4-F and Pitts, and have felt that it has improved the feeling of realism, but then I wrote it ;) Do people feel it is worth providing a generic implementation, given that for most GA flying is at 2g or less, and this will move the pilot viewpoint 5cm! It is worthwhile to model generically. Many aircraft in CVS could benefit from this feature without having to recode it for each. 2) Currently the redout and headshake enabling properties are userarchive, which (as I understand it) means that the user's preference will over-write any aircraft setting. Given that both these generic features duplicate existing aircraft-specific code, I think I should remove this flag, so aircraft designers can over-ride it. Any comments? STRONGLY OPPOSE. User preference should absolutely outweigh the aircraft designer. While I might feel, as an aircraft designer, that a function adds a degree of realism, I can't and don't test on different hardware, monitor resolutions, multi-head setups, hardware simulator setups, etc. which head-shake may cause problems with. I personally find it annoying to have the panels jumping around during IFR flight. Are we talking about the same utility? Headshake as implemented is a comparatively small effect, which is only visible at moderate to high G loadings - you should never see it in IFR flight (unless you have been trying aerobatics in IFR). I can antcipate no interaction with different hardware, monitor resolutions, or multi-head setups, although it does need to be disabled for hardware simulator setups. And unless you are seeing a bug, the movement is gradual and only jumps around in the event of very high G loadings - in a crash for example. Did you mean dynamic view? 3) At the moment, this feature is limited to the y-offset of the pilot viewpoint. For non-military aircraft, the most significant g-forces will be felt in the y-axis (in the pilots frame of reference), as they cannot yaw fast enough to cause any in the x-axis, and they don't have enough power to cause any in the z-axis. If it is worth providing a generic feature, is it worth making it multi-dimensional? It may be worth while to add. Perhaps it could be used to give a sense of slip/skid for the GA pilot. Vivian - 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
[Flightgear-devel] b1900d: Missing textures on centre pedestal
Hi All, I have just sync'ed my fgfs data from cvs and noted that the b1900d had been updated. Hoever, there seems to be two missing textures. osgDB ac3d reader: could not find texture caution-panel.png osgDB ac3d reader: could not find texture throttles.png Apart from those two missing files, looks good. I noted that the Electrical.nas has changed for the aircraft but not sure what. Is there a viewcvs web front end or similar accessible anonymously? Thanks for the update though :-) Regards George - 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
Re: [Flightgear-devel] b1900d: Missing textures on centre pedestal
Apart from those two missing files, looks good. I noted that the Electrical.nas has changed for the aircraft but not sure what. Is there a viewcvs web front end or similar accessible anonymously? Something like this? http://cvs.flightgear.org/cgi-bin/viewvc/viewvc.cgi/ Enjoy - Torsten - 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
Re: [Flightgear-devel] Flash with altitude change
On Apr 19, 2008, at 10:30 AM, Melchior FRANZ wrote: * Curtis Olson -- Saturday 19 April 2008: I think Melchior is the expert on this subject. Hehe ... yes, kind of. It's probably the bug that I introduced shortly before and fixed again shortly after the 1.0 release. I don't think there's a way to fix it without recompiling. Smoothing will certainly help, but I think you'd have to use a very slow lowpass. What about using a newer version from CVS? m. I did make the minor change that Alex suggested in this discussion: http://tinyurl.com/3muc7m and then rebuilt and it seems to be working. Is that essentially the change that you were referring to?- 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
Re: [Flightgear-devel] b1900d: Missing textures on centre pedestal
George Patterson wrote: On Mon, Apr 21, 2008 at 10:44 PM, Torsten Dreyer [EMAIL PROTECTED] wrote: Apart from those two missing files, looks good. I noted that the Electrical.nas has changed for the aircraft but not sure what. Is there a viewcvs web front end or similar accessible anonymously? Something like this? http://cvs.flightgear.org/cgi-bin/viewvc/viewvc.cgi/ Enjoy - Torsten - 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 Hi Torsen, Thanks for that. Ahh. I have spotted the error that was made which was the textures .rgb versions has been replaced with .png but not provided in the commit. So easy mistake to make. :-) Regards George - 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 Thanks for catching that ... forgot to add to repository before committing... Syd - 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
Re: [Flightgear-devel] Controlling FlightGear FDM through genericinputwith UDP
Hi! On Sunday, April 20, 2008 Haluk Sevener wrote: All I want to do is just send the commands to a FlightGear instance over network with UDP, at the same time listening the properties of the aircraft over network by using the same protocol. In other words, I want to implement an external control mechanism. I have the same progrmme. It get from FlightGear terrain elevation and send to FG airplane position, orientation, control deposition, etc. The only difference is that I have to modify generic protocol for binary i/o. Anyway, I started the instances with the following commands: (master) fgfs --generic=socket,out,1000,127.0.0.1,7755,udp,udptest (slave) fgfs --generic=socket,in,1000,127.0.0.1,7755,udp,udptest Do you really run 2 FlightGear instances at a single PC at 1000Hz? Try to run at 100Hz or less. I think commans must be : (master) fgfs --generic=socket,out,100,127.0.0.1,7755,udp,udptest (slave) fgfs --generic=socket,in,100,,7755,udp,udptest --fdm=external You may try to change host from 127.0.0.1 to localhost on master instance. If you using firewall make sure to open port 7755. I really had this problem with firewall. If this will not help, check udptest.xml as I have wrote. What is in input/input tags. With respect, Alex - 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
Re: [Flightgear-devel] Flash with altitude change
* 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. - 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
