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Muscle rigging with mgear components

Hello!
I am working on a rig that has some exposed muscles.
I have been playing around with different components to get the muscles to work.
The trick I am having with the muscles is to keep them from flipping in extreme poses.
I ended up using 2 different spine components attached to the leg component

spineEPIC_C1_root for the rectus femoris

spine_C0_root for the bicep femoris

I also create a control_01 for where the IK end connects to the bone. (Ik reference arrays were not rotating enough for the r. Femoris to wrap around the knee)
I add a post build script that:
-parent the spine tangents for both spine components to the bones of the leg
-Then parent the spine IK CTL to the control_01 CTLs
I am also creating a SetDrivenKey for the Bicep so it stays inline with the muscle and eliminates the knee rotation.

It is mostly working but there is a lot of post build tweaking that is needed.
I was wondering if anyone has solved a similar problem with a cleaner solution?

Thanks!

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