Blender Git Loki

Bendy Bones Instability Fix - Second Attempt

So the error seems to be in cubic_tangent_factor_circle_v3(),
which was introduced with D2001.

I've tweaked the most obvious culprit here - the epsilon factor.
It used to be 10^-7, but I've reduced it down to 10^-5 now,
and it's looking a lot more stable now :)

---------

BTW, about the derivation of the magic 0.390464 factor I briefly subbed back
as a workaround for this bug, see:
http://www.whizkidtech.redprince.net/bezier/circle/