Utilidad para encontrar colores. Teoría del color. Easing_function_generator. Download source To use the generator, drag the handle points at the bottom of the movie (in orange) or enter their position manualy in the fields provided (warning: dragging may be slow).
Then just copy the function for pasting and use it as you normally do (tween engine, etc.). Although each handle point modifies the curve, their are numbered to show which portion of the curve they influence the most. Handle point 1 controls the left part of the curve and handle point 4 controls the right part. Erowid.