1 - If you use Datcom+ instead of Datcom/DIGDAT, then you will get output directly to JSBSim xml.
2 - If you use Datcom+ pro, it will output inertia for JSBSim also.
Wing:
NACA 65A112
NACA 65A111
Horizontal empennage:
NACA 65A 010
Vertical empennage:
NACA 65A 010
I've been tinkering with an interesting lighting workaround yesterday. The problem is that I have a semi-enclosed space and objects in it (the payload bay of the Shuttle in the event). As long as the doors are closed, it should be dark, but once they're open, the bay is of course illuminated by strong directional light and in addition can be illuminated by floodlights in opened or closed state. However a forward renderer knows nothing of closed doors, it only knows of whether a surface faces sunward or not.
Rembrandt solves this (but in a rather expensive way) of course, but we don't seem to have a graceful alternative. Killing the diffuse material via animation can make all objects go dark and not respond to direct light - but then they won't respond to the lightmap either.
However - in a single channel lightmap we have an unusued alpha channel. In a multi-channel lightmap, we have four light channels, out of which we could use one for something else. So by optionally assigning the alpha channel of the lightmap to a darkmap with a property-controlled strength it is possible to find a satisfactory solution - the alpha strength maps regions not reached by direct light. As the payload bay opens, direct light is allowed to filter in.
The effect isn't visually fully 'correct' - but it is plausible enough - and unlike Rembrandt dead-cheap, it's just two lines of fragment shader.
I will include it into the space shader effects, but I was wondering if there are use-cases in the lower atmosphere as well. From the top of my head, I'd think of deployable cargo in a cargo plane, and perhaps the gondola of an airship which is under very easy to determine conditions always shadowed by the gas bag. I don't know how we handle these situations right now, but if there are use cases, let me know.
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