[VRC Constraints] "Stretch to" constraint similar to VRCAimConstraint to mimic Blender's Stretch To constraint
Catboy Slim
This constraint will be very useful for rigging stretchier things like baggy clothing.
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Catboy Slim
A stretch-to constraint can be more reliably emulated by using an aim connstraint set to Object Up (with the object being the bone's parent), a contact sender and receiver to determine the distance between the bones, and an animation to shrink the bone in question to match the distance.
Catboy Slim
here i have a stretch-to bone connecting the upper leg and the lower leg to emulate the ligaments found in a cat's hind leg. this kind of rigging is only possible using a bone that can change length to meet its target.
Catboy Slim
hypothesis: you can emulate a Blender "stretch to" constraint by combining a physbone with an inside out sphere collider and literally stretching the physbone to whatever other bone you want
Catboy Slim
Negative. Physbones don't actually scale when they squish. Instead, the next bone in the chain moves closer to the previous bone. Geometry weight painted to the physbone will not squish with the physbone.