FK -> IK causing 360 degree spins.

Xelnath

This is really strange. The more times I run an animation which has FK -> IK (IK Constraints which I move from 0% blend to 100% blend) the worse this problem gets.

The feet in this gif will start to ... well, spin, more and more each time I cause the character to land. It's very strange.

http://imgur.com/lPlsbyB

BinaryCats

IK Spinning

Pretty sure its this.

If you used stepped time curve: http://esotericsoftware.com/spine-graph it will stop it from happening, but you may get some snapping.

My current theory why this happens is due to floating point inaccuracies and the bug above. an animation moves and rotates the bones, which may add 0.000001 onto the bone so when you turn the IK on, it will determine that it isn't at that point and try to correct it, due to the spinning bug it will spin 359.999999' around. occasionally it will overstep, and because it doesn't use hunting (because of the bug) it will spin around agiain..

This is fixed in V3, don't know when it will be fixed in the runtimes.