ik-fk snapping on a reverse foot leg?

#1

I wrote a script to preform a match from the ik leg controls for the fk,but I hadn’t counted for the reverse foot attributes driving the reverse foot hierarchy which in turn drive the leg rotations. As it is it will match translate and rotate values, but I can’t figure out how to set the reverse foot plugs so that when switched back to ik their values will preserve the rotations throughout the leg joint chain. I guess I need to figure out how to get the driven rotations in the reverse foot, get where the ik translates to from those rotations. How then do I take the joint chain rotations to find out what the reverse foot plug values need to be to get the ikHandle(s) snapped to the position that solves for the same rotations? On top of that, how do I make sure the control which drives the entire reverse foot system snaps and orients to the right place which doesn’t throw off its reverse foot plugs’s attributes?

#2

The principles shown in ‘podcast 4 - Reverse foot’ here should help you get started for this. Once you have the foot ‘reset’ as shown in the tutorial the FK will then be easy to match up.

BTW I’m not 100% sure, but I think this tutorial is available to download from Autodesk Subscription area if you have a subsciption for Maya. I know that others from the same author definitely are, but it’s a while since I checked.

Cheers,
Brian

#3

Thanks, but I neither have the funds nor the subscription (I use a educational license of Maya)…However, how would resetting the control help me to get the right values for the reverse foot attributes (pivot, swivel, &bank)?

#4

I could tell you, but the explanation would be a wall of text and I feel that would be cheating the tutorial creator, apart from that it’s the kind of thing that’s much easier to explain in a video than text. That particular tut is available separately at $5.95 which seems pretty reasonable to me ; )

Cheers,
Brian

#5

Oh sorry, I forgot to mention I figured out my own means: which was basically to factor the offset of the ikHandle that’s driven by the foot control’s reverse foot system into my snapping method, rather than reverse engineer the reverse foot so that the rotation attribute on the foot control would result in the position of the effector if it were also driven by the reverse foot system.

#6

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