2009

Path and Surface Joints
Circular path
When you turn on Active for Path or Surface joints you are setting whether
the object can move along the assigned path or surface.
A house key on a ring is an example of an active path joint.
See
Path Constraint on page 3297.
Limiting Joint Action
Most joints are limited in their range of motion along an active axis. For
example: a hinge might open only to 120 degrees; a piston slides only within
the length of its cylinder. To limit the range of motion allowed on an active
axis, you turn on Limited and set values for the From and To fields on the
joint rollouts.
You can also view joint limits in the viewport by pressing and holding the
mouse button on the From or To label of a limit field. The object will move
or rotate to the limit value until you release the mouse button.
Inverse Kinematics (IK) | 3473