[ Mostly this is just me nattering about some stuff I was playing
with, with a minor wish list item tossed in. I'd be interested in
any hints on how to do this better; I recognize that this is stuff
that some of you probably do in your sleep. ]
I started to play with animation, and it seemed like one of the
key things that would be useful would be to conveniently
interpolate between two (or N) positions or rotations. That is,
I'd like to say:
When $t is 0, the position is [x1,y1,z1].
When $t is 0.5, the position is [x2,y2,z2].
When $t is 1.0, the position is [x3,y3,z3].
... with interpolation for points between.