A Unified View of Computer Animation
Models have parameters
- Polygon positions, normals, spline control points, joint angles, camera parameters, lights, color
- n parameters define an n-dimensional state space
- Values of n parameters = point in state space
Animation defined by path through state space
- To produce animation:
- 1. start at beginning of state space path
- 2. set the parameters of your model
- 3. render the image
- 4. move to next point along state space path, repeat 2
- Path usually defined by a set of motion curves
Every animation technique reduces to specifying the state space trajectory