Never mind.

Pos constrain ring 2 to ring 1
Pos constrain ring 3 to ring 2
Null 1 under ring 1 at x1,y0,z0
Null 2 under ring 2 at x0,y0,z1
Direction constrain ring2 x to Null1, up vector -y
Direction constrain ring3 z to Null2, up vector -y


--
Joey Ponthieux
LaRC Information Technology Enhanced Services (LITES)
MYMIC Technical Services
NASA Langley Research Center
__________________________________________________
Opinions stated here-in are strictly those of the author and do not
represent the opinions of NASA or any other party.

From: softimage-boun...@listproc.autodesk.com 
[mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Ponthieux, Joseph 
G. (LARC-E1A)[LITES]
Sent: Thursday, September 03, 2015 12:00 PM
To: softimage@listproc.autodesk.com
Subject: gyro/gimbal rig

Hi,

I am trying to recreate a gimbal such that the inner rung always points to 
earth center(for our purposes -Y) regardless the position of the main chassis.

It is a three ring gimbal with the chassis being the third "outer" ring. Ring 2 
(middle) is X rot, ring 3 (inner) is Z rot. Ring 3 Y axis should always be 
pointing down regardless orient of chassis.

Tried locking down the rot limits and then using direction constrains but the 
direction constrains seem to ignore the rot limits in effect disabling them.



Has anyone ever done this? Having a lot of difficulty with this.

--
Joey Ponthieux
LaRC Information Technology Enhanced Services (LITES)
MYMIC Technical Services
NASA Langley Research Center
__________________________________________________
Opinions stated here-in are strictly those of the author and do not
represent the opinions of NASA or any other party.

  • gyro/gimbal rig Ponthieux, Joseph G. (LARC-E1A)[LITES]
    • RE: gyro/gimbal rig Ponthieux, Joseph G. (LARC-E1A)[LITES]

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