This is a casting for feedback, on something I've had in my junk drawer for a long time. I keep procrastinating on actually releasing it, so I thought I'd see what the community thinks .   What I've been calling 'meta-ease' or 'split-ease' is a set of interpolation functions that variably combine acceleration (ease-in), constant-speed and deceleration (ease-out) segments in to a single sine-based or variable-power-based curve. It aims to overcome what I've always felt were limitations