Forum: Poser - OFFICIAL


Subject: Rotation vs. Translation... I need some math help! *ugh*

RockhurstPike opened this issue on Mar 18, 2003 ยท 14 posts


ockham posted Tue, 18 March 2003 at 12:02 PM

Oh, now I see. First, bear in mind that you will need to limit your actions to only two angles. It doesn't matter which you choose, but you'll have to stick to those two. The Poser system using all 3 angles really can't be used. (This is the Gimbal Lock problem which has been discussed considerably around here.) Within Poser, I'd be inclined to handle the problem in a more "physical" way, sort of like this: Parent the sphere to a "platform" like a box prop. Start the sphere in 0,0,0 position wrt the box. Make the desired rotation about the Y axis on the sphere itself. Then use the "platform" to make the other two rotations. This way involves no special math, avoids the gimbal lock mess, and uses the available resources.

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