I was looking for easing functions and found this awesome website: http://gizma.com/easing/
Edit: this is also interesting: http://sol.gfxile.net/interpolation/index.html
I want to hide and show an image in a fancy way when a button is clicked.
I think I will use something similar to splines, though. http://sol.gfxile.net/interpolation/index.html#c8 is the closest to what I was looking for (cyan circle).
What do you use easing functions for?