Support SetMembersPosRotOnEVA (UMMU sdk)

[jedidia]

Can somebody tell me how the second parameter in SetMembersPosRotOnEVA is supposed to work? It's definitely not a directional vector as Orbiter uses it. I tried to play around with it to predict what vectors result in what orientation, but I can't seem to get behind it. I'm baffeled by the result every time.

 

[mjanicki]

It's been a while since I used the UMMU SDK, but this is taken from UMmuSDK.h:

    BOOL SetMembersPosRotOnEVA(VECTOR3 Pos,VECTOR3 Rot);    // set member position and rotation when EVA. Return TRUE of ok

Looks like the second parameter is a vector containing the amount by which the MMU should be rotated in each of the 3 axes. I believe that VECTOR3(0,0,0) is facing the ship with "top" matching the vessel local reference frame, but I do not recall if the amount of rotation is specified in radians or something else entirely.

-- Mike

 

[jedidia]

You are right, it seems to be angle of rotation around the 3 axes in radians. A bit confusing when you're used to having rotation defined in normalised vectors as Orbiter usually does for such things...

 

[n122vu]

Not really confusing if you ask me. It's relative to the dock/airlock from which the UMMU is entering/exiting. Same as defining which way is "up" for a dock in a config file, you're defining which way is "up" for the UMMU when it exits said dock.