Curve Editor 08: Applications

• Bouncing Ball
• Character Motion - Frame Animation
• Smooth Camera Movement
• Mocap Data Cleaning
• Exaggeration

Bouncing Ball

First and foremost, we must have the ball bounce in place and later have the ball move from the left, up-high to the right, down-low.
First make the ball move in Z axis:

The Z motion combined with the X axis motion:





XYZ scale animation to simulate squash and stretch:





Using the Y axis to simulate rotation:

Character Motion - Frame Animation

Using only two motion layer keys and an inbetween curve to create the entire motion.

Example 1 - Before





Example 1 - After







Example 2 - Before




Example 2 - After

• Camera can now be set to Default key tangent for animation. (Default Key Tangent, see here)
• New and old key comparison

Usage


Linear


Curve


Final Result

Mocap Data Cleaning

Body mocap will often lead to situations of hip and foot sliding along with various abnormal limb jittering.

Fix for the Hip Sliding

• Use Refine Key to down sample the curve data into a manageable amount of keys.

• Use the Curve Editor and the Transformation Gizmo to inspect the abnormal sliding and direction.

• Use the Scale tool in the Curve Editor to fix the sliding issue.

Fix for the Foot Sliding

• iClone Reach Target can be seen as a type of Lite IK effector, thereby, just attach two spheres to the ankles and use the IK Constraint.

• Use the Lite IK effector to fix the sliding in the steps.

• Review and compare the final result with the original movements.

Thanks! An excellent solution!