Animating with Frames

[bdkhoops]

We have an old fashion way of modeling animation in our software which is to use frames. (It works like a cartoon flip book would if you have ever made one of those) Basically, I need all the possible frames that a person would go through during a walk cycle. Each frame is an individual 3D shape but if you were to keep cycling through them really quickly it would look like the guy is walking. Does anyone have ideas on how to do this. Very hard to make this look good just by dragging vertices around.