2009

the field or release the spinner, the object returns to its original
position. 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.
Interface
Sliding/Rotational Joints rollouts
The Sliding Joints rollout and Rotational Joints rollout contain similar controls
for position and rotation, respectively. Also, each rollout contains identical
group boxes for control of the X, Y, and Z axes.
X/Y/Z Axis groups
Active Activates an axis (X/Y/Z). Allows the selected object to slide on or rotate
about the activated axis.
Limited Limits the range of motion or rotation allowed on an active axis. Use
in conjunction with the From and To spinners. Most joints are limited in their
range of motion along an active axis. For example, a piston slides only within
the length of its cylinder.
Ease Causes a joint to resist motion as it approaches its From and To limits.
Simulates an organic joint, or worn mechanical joint, moving or rotating
freely in the middle of its range of motion but moving less freely at the
extremes of its range.
From and To Spinners Determine for position and rotation limits. Use in
conjunction with the Limited function.
3496 | Chapter 15 Animation