Animation & Rigging

This section describes the code design and functional requirements of Animation & Rigging related features.

Core Concepts

• Animation System
• Active Keyframe
• Parenting
• Armatures
• B-Bone Vertex Mapping
• IK: iTaSC algorithm

To be documented:

• Animation Channel Filtering, used for obtaining animation channels for drawing in UIs, performing operations, and evaluating animation.
• Animation Data, how animation data is attached to ID datablocks.
• Keying Sets and Auto-Keying
• Armature Skeletal Animation, how pose data is stored, evaluated, and applied.
• Armature Skeleton Editing, how armatures are created and edited, including bone naming conventions, mirroring, symmetrizing.
• Constraints
• Evaluation Pipeline, how animation data is evaluated and applied.
• Interpolation / Blending
• Motion Paths
• Quaternions

Tools

• Pose Library

To be documented:

• In-Between tools, like the Pose Breakdowner, Relax To Rest Pose, etc.

Animation & Rigging Related Editors

• Non-Linear Animation

To be documented:

• Dope Sheet and Action Editor
• Graph Editor
• Timeline