3D Modeling 3D Modeling Animation & Rigging 2

Question 1

What are blend shapes (or morph targets) used for in character animation?

Accepted Answer

Storing alternate mesh positions to drive facial expressions or shape changes

Answer

Blend shapes store vertex offsets from a base mesh, allowing smooth interpolation between shapes for facial animation or corrective shapes.

Question 2

In animation, what does 'squash and stretch' refer to?

Accepted Answer

A fundamental animation principle where objects compress and elongate to convey weight and flexibility

Answer

Squash and Stretch is one of the 12 animation principles, simulating how real objects deform under force to add life and believability.

Question 3

What is motion capture (mocap) used for in 3D animation?

Accepted Answer

Recording real actor movements as 3D data to drive digital character animations

Answer

Motion capture records an actor's physical movements using sensors or cameras and maps that data onto a 3D character rig.

Question 4

What is a constraint in 3D rigging?

Accepted Answer

A rule that restricts or links an object's transforms to another object or target

Answer

Constraints link an object's position, rotation, or scale to another object, simplifying rig setups like aim, parent, and point constraints.

Question 5

What is the 'twelve principles of animation' based on?

Accepted Answer

Disney animators' observations of natural motion to create believable animation

Answer

The 12 principles were developed by Disney animators Ollie Johnston and Frank Thomas to create convincing, life-like animation.

3D Modeling Practice Test