Francois Labreque <fla### [at] videotronca> wrote:
> What is a "keyframe" ?

As Ken described, keyframes allow you to specify a limited number of targets
within an animation, and have the rest of the frames interpolated or
"tweened" to create smooth movements.  I guess the term goes back to
traditional cel animation, where the master artists would draw the major
positions of the characters, and these would be filled in by assistants.

In POV-Ray, you can use my Automatic Clock Modifier to specify a list of
keyframes and (optionally) transition methods, to interpolate between
floats, vectors, pigments, textures, etc.  My Spline Macro File also allows
you to specify a list of 3D positions and have these interpolated in various
ways.  You'll find both at http://www.geocities.com/ccolefax.

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