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High-Level Architecture

628 bytes added, 22:09, 21 March 2016
Federate Object Model: http://forum.flightgear.org/search.php?st=0&sk=t&sd=d&sr=posts&keywords=quaternions
The FOM is a set of XML files in [https://sourceforge.net/p/flightgear/fgdata/ci/next/tree/HLA/ fgdata/HLA/]
The orientation data in the FOM (SGOrientationWGS84) are Quaternions ([https://en.wikipedia.org/wiki/Quaternion https://en.wikipedia.org/wiki/Quaternion]), and those are the i,j,k values. From memory, the orientation is relative to a earth-centered-frame, and there are functions in SimGear to convert to heading/pitch/roll in combination with the object's position.
<ref> {{cite web
| url = http://forum.flightgear.org/viewtopic.php?p=280098#p280098
| title = <nowiki>Re: HLA </nowiki>
| author = <nowiki>stuart</nowiki>
| date = Mar 21st, 2016
| added = Mar 21st, 2016
| script_version = 0.25

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