About Curve Deformation
The Curve deformation allows you to deform parts of a character using a vector curve. By manipulating the curve's points and their bezier handles, you can change the curve's direction, shape and length, and Harmony will deform the drawing to match the curve's shape. Curve deformations are mostly used to animate elements that don't have joints, such as hair bangs or facial features, or body parts with so many joints that they seem curved, such the torso. They can also be used to animate the limbs of characters in a rubber hose style of animation, where arms and legs are bent in curves.