OptionalaxisHinge axis in the coordinates the chain is solved in (world, for a world-position chain). Not copied after the solve starts — the caller owns it. Omit for a ball limit.
Upper bound, in radians (§7a). Must be >= min.
Lower bound, in radians (§7a).
Per-joint hinge or ball limit, in radians about a local axis.
Omit the entry (or pass
null/undefined) for an unlimited joint.axisomitted is a ball: the angle between the rest outgoing bone and the current outgoing is clamped to[min, max].axissupplied is a hinge: the outgoing bone is projected onto the plane ⊥axisand the signed angle from the rest outgoing, about that axis, is clamped.