Adobe Flash CS4 Professional for Windows and Macintosh: Visual QuickStart Guide

Constraining IK Motion

Intro to Inverse Kinematics

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Constraining IK Motion

You can limit the way IK bones move. You

can allow or prevent a bone from rotating, for

example, to control the way a character can

bend its arms and legs. You can also allow

or prevent movement along a bone’s x-axis

(x-translation) and/or y-axis (y-translation).

 e axes in this case refer not to the x- and

y-axes of the Stage, but to the axes of the

bone instance (see the sidebar “Translating

the Direction of Translation”). Enabling trans-

lation for the parent bone in an armature

allows the entire armature to move around

on the Stage. Enabling translation for a child ...