Spine Blend moves

Builder & Puppet
1

Hi,

When I blend spine from fkSpline to ikSpline it moves. Is it a bug? Is ok if it is bug, but would be nice if it does not move

2

It’s not a bug.

It’s because fkspline and ikspline have their joints on curves that are slightly different due to different types of ctrls.

You have a few options to eliminate that joint shifting on the blend

  1. turn on the offsetJoints attribute on fkSpline and ikSpline, or

  2. if you make the spine straight, there won’t be a joint shifting as you blend

  3. another option to consider would be not using ikSpline, but instead turn on the preIk attribute on the fkSpline. PreIk would create IK ctrls that manipulate the fkSpline ctrls. This is performance-wise better than doing a blend between 2 systems.

1 Like
3

nice! making the spine straight solves it :smile:

Thank youu