Jim Wilson wrote: > It's already inconsistent. The model is one way (as you expected) > and the panel xml is x across and y up/down.
But this is OK -- these are different coordinate systems with different usages. You'll never put airframe coordinates into the panel XML, nor use panel coordinates in a model file. The problem with inconsistencies is when multiple conventions get used for the *same* coordinates. To take airframe coordinates as an example (I'm not 100% certain on some of these): JSBSim uses X-forward, Y-right, Z-down YASim uses X-forward, Y-left, Z-up The model ac3d file appears to use X-right, Y-forward, Z-up All of these are right handed coordinates, and any of them could work. Internally, it really doesn't matter what convention the subsystem uses (YASim converts its coordinates to JSBSim conventions before exporting them, for example). But externally ("on the bus", as it were), we really need to pick one and only one canonical way to represent a unique point on the airframe. Andy -- Andrew J. Ross NextBus Information Systems Senior Software Engineer Emeryville, CA [EMAIL PROTECTED] http://www.nextbus.com "Men go crazy in conflagrations. They only get better one by one." - Sting (misquoted) _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel