2009

The Locks rollout contains three groups: one each for Move, Rotate, and Scale.
Each group contains three options, one each for the X, Y, and Z Local axes of
the selected objects.
■ When turned on, the objects cannot be transformed about the selected
Local axes when you directly use one of the transform tools.
Objects can still be transformed by other means such as being a child of a
transformed parent object or being part of an inverse kinematics chain.
■ When turned off, objects can be freely transformed about the unlocked
Local axes.
Animating Attachment
You assign an
Attachment constraint on page 3288 to cause an object to hold
a position on the surface of another object. The Attachment constraint is not
a hierarchical link, but it has the effect of "linking" an object to the surface of
another object as follows:
■ Attach a "source" object to the face of a "target" object so that the source
object acts as if it's glued to the target object, no matter how the surface
of the target object is deformed.
■ Animate the Attachment parameters so that the source object moves over
the surface of the target object.
Unlike hierarchical linking, which considers only object transforms, an object
using an Attachment constraint follows the deformations of another object
based on that object's modifiers and space warp bindings.
See
Animation Constraints. on page 3287
Setting Attachment Parameters
You use features on the Attachment Parameters rollout on the Motion panel,
to pick a target object and position the source object.
■ Click Pick Object, then click the target object to perform the attachment.
■ Click Set Position and click or drag on the surface of the target object to
place the source object onto the surface.
If you want to move the source object along the normal of the face (move
it below or above the face) click Affect Object Only on the Hierarchy panel
and move the object, using Local transform coordinates.
3370 | Chapter 15 Animation