On 12 Aug 2010, at 00:40, Stuart Buchanan wrote: > This was re-factored to get rid of some old vector calculations by James: > > http://gitorious.org/fg/simgear/commit/aa859c488f21d0b1f8d54c657e23a738dcadacca > >> From a code read of the diffs, I think the course for the viewer > movement was reversed during the refactoring and should be from the > current position to the last position, as we want the cloud field to > move towards us. However, changing that didn't have the effect I > expected, just shifted the problem by 90 degrees so the clouds moved > away from the aircraft when heading E/W rather than N/S. Eventually I > hacked the the ay value as the patch below shows, which does appear to > give the correct behaviour (at least around EGPH). > > That suggests the texture coordinates are reversed in the y-axis, but > I don't see how that could have changed recently to introduce this > discrepancy > > I'll take another look when I get the chance, but in the meantime if > anyone has any bright ideas, please let me know.
I'll take a look when I get a free moment, hopefully this evening but maybe the weekend. As you say, I really don't understand how the Point3D removal could have caused a 90 degree shift; it's entirely possible I introduced a 180 degree shift. Hmm. James ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
