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Forward and Reverse FK, ways to achieve it with mGear?

Hi everyone,
I’m building a rig on a creature that can basically be compared to a snake in terms of locomotion and the way to control it.
I’m looking at rig references to implement mine looking for the best and more needed/usefull fonctionnality for our usecase.
I found a video of this Snake rig which has the things I’d like to reproduce. It’s been built in a standard way and I’m of course using mGear.
What I mainly want to achieve is the forward/reverse FK setup he has on his rig, and for which he’s done a video tutorial, while keeping IK behavior as well.
The slider ctls has on top of the snake to set forward or reverse FK is very handy

The thing is that mGear’s approach of dealing with controlers, groups and bones is slightly different.

Does someone has an idea of what would be the best way to achieve this, of course with post scripts.

I saw a post from @dew where he was planing on building a component to do that but there’s no more replies since june 2021

Thanks a lot in advance for the help

I watched the tutorial, and it seems pretty feasible to do with mGear and postscripts. It is basically two fk chains in opposite directions and an SDK to drive the constraint between them, simply sliding and setting that 0.4 value for each control.