Thanks Melchior, The Target View works totally fine now, although I didn't really understand for what I need the geo.elevation() function. I have to admit that I have never used Naval before and I am not really sure, how to implement what you were talking about. So far my waypoints are all around KSFO, so the ground elevation is almost sea level. For this it works fine. Will I run into problems when I have waypoints in the mountains?
I also defined the view as n=1000. Unfortunately this doesn't solve my problem. Somehow I managed to define a 7th view with my try and error method. So view.nas always gives me an error message when I start FG. I uninstalled and reinstalled FG already to get a clean preferences.xml. But this didn't solve the problem. I am really clueless. How can there be a view n=7, if I use a fresh installation of flightgear? If I change the parameter in view.nas to 7, FG doesn't give me an error message. But then, when I switch between the views in FG, I get a black messed up view after the 6 original views and an error message in the command line. How have I been able to mess up FG, when I only changed preferences.xml and undid all my changes? Thanks, Hannes -----Ursprüngliche Nachricht----- Von: Melchior FRANZ [mailto:mfr...@aon.at] Gesendet: Donnerstag, 14. Mai 2009 09:52 An: flightgear-users@lists.sourceforge.net Betreff: Re: [Flightgear-users] defining target view for waypoints * Hannes Schweikl -- Tuesday 05 May 2009: > I am trying to define an additional view which is looking from the current > aircraft position to the waypoint (lon,lat)@ground-elevation the aircraft is > approaching. Try this: <view n="1000"> <name>Target View</name> <enabled type="bool" userarchive="y">true</enabled> <type>lookat</type> <config> <from-model type="bool">false</from-model> <from-model-idx type="int">0</from-model-idx> <eye-lat-deg-path>/position/latitude-deg</eye-lat-deg-path> <eye-lon-deg-path>/position/longitude-deg</eye-lon-deg-path> <eye-alt-ft-path>/position/altitude-ft</eye-alt-ft-path> <at-model type="bool">false</at-model> <at-model-idx type="int">0</at-model-idx> <target-lat-deg-path>/autopilot/route-manager/route/wp/latitude-deg</target- lat-deg-path> <target-lon-deg-path>/autopilot/route-manager/route/wp/longitude-deg</target -lon-deg-path> <target-alt-ft-path>/position/ground-elev-ft</target-alt-ft-path> <x-offset-m type="double">0</x-offset-m> <y-offset-m type="double">0</y-offset-m> <z-offset-m type="double">0</z-offset-m> <ground-level-nearplane-m type="double">10.0f</ground-level-nearplane-m> <default-field-of-view-deg type="double">55.0</default-field-of-view-deg> </config> </view> Obviously, the ground elevation is a problem. It's the aircraft's, not the target point's. You can use Nasal's geo.elevation() function to determine that. A view handler could update it whenever necessary. > I added these lines to preferences.xml. After adding that, I had to change > line 530 in view.nas to: if (index > 7 and index < 100) in order to get rid > of a nasal error caused by the increased # of views. I am not sure, if that > is the way to go to. No, as Ron wrote already, the first 100 views are reserved. (It was necessary to enforce that, as people wouldn't respect it otherwise, and that would cause lots of work later. Been there, done that.) Aircraft use views with indices 100++, but higher numbers are free for local extensions. Let's say >=1000. m. ---------------------------------------------------------------------------- -- The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com _______________________________________________ Flightgear-users mailing list Flightgear-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-users ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Flightgear-users mailing list Flightgear-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-users
