1. Computer Animation System Overview
CS 6204 Character Animation
Computer Animation System Overview
Yong Cao
February 6, 2007

2. Introduction
Shrek 2

3. Introduction
World of Warcraft

4. Virtual Reality Engine
Introduction
Virtual Reality Engine

5. Class project from UCLA
Introduction
Class project from UCLA

6. While ( Not end ) { Update Everything; Render Everything;
Animation Loop
While ( Not end ) {
Update Everything;
Render Everything;
Advance Time; }

7. What need to be updated? Scene Manager Camera Manager Lights Manager
“Update Everything”
What need to be updated?
Scene Manager
Camera Manager
Lights Manager

8. What need to be updated? Scene Manager Camera Manager Lights Manager
“Update Everything”
What need to be updated?
Scene Manager
Camera Manager
Lights Manager

9. What need to be updated? Scene Manager Camera Manager Lights Manager
“Update Everything”
What need to be updated?
Scene Manager
Camera Manager
Lights Manager

10. What need to be updated? Scene Manager Camera Manager Lights Manager
“Update Everything”
What need to be updated?
Scene Manager
Camera Manager
Lights Manager

11. Poses of Animated Objects Others: Audio, music …
Update What?
Object general status
Position
Health, Emotion …
Poses of Animated Objects
Others: Audio, music …

12. Special effects (Particles) …
Modules for “Updating”
AI (simulation)
Animation
Physics
Virtual events
Special effects (Particles) …

13. What need to be rendered? How to render?
“Render Everything”
What need to be rendered?
How to render?

14. Scene Manager Occlusion Level Of Detail (LOD)
“What need to be rendered?”
Scene Manager
Occlusion
Level Of Detail (LOD)

15. Scene Manager Occlusion Rendering Order Camera Manager Lights Manager
“How to render?”
Scene Manager
Occlusion
Rendering Order
Camera Manager
Lights Manager
Renderer
Alpha Blending, Opaque
Shader (GPU)
Shadow (soft)
Volumetric lighting
Normal Map, Bump Map

16. Alpha Blending and Translucency

17. Shadow
Soft Shadow
Self Shadow

18. Volumetric lighting

19. Normal Mapping

20. Object Manager Scene Manager Camera Manager Lights Manager AI
Overview
Scene Manager
Object Manager
Camera Manager
Lights Manager AI
Animation
Physics
Particles …
Renderer

21. AI Animation Physics Particles … Renderer
Overview
“Updating Everything”
“Render Everything”
Managers:
Scene Manager
Camera Manager
Lights Manager
Systems:
AI Animation Physics Particles …
Renderer

22. Overview