Norman Vine wrote: > Why this position is expressed as [lat, lon, alt] instead of [X,Y,Z] > ( or perhaps both shold be passed ) is a relavant question but ....
The lat/lon/alt stuff is a sane convention, and especially easy for simple code (Nasal scripts, for instance) to parse and use. I agree that the cartesian frame makes more sense mathematically. FWIW, YASim does all its internal work in a cartesian frame*. It would be easy to export. The scene graph could use it productively, but we'd still want to have the simple stuff available for other applications (weather, for example, is going to be much happier in lat/lon/alt). * Note that orientation is stored as a matrix, not a quat, sorry. :) Andy _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
