I'm trying to make an animation transition between 2 shapes, example: transform a square into a circle... or transform a triangle into 2 squares
pretty much like this: http://i.stack.imgur.com/hSxul.jpg (no rep for posting images)
my first idea is to interpolate 2 planes and give them 2 different values of Z, and then interpolate the shape of one plane into the other... but how?