package OCADml
Library
Module
Module type
Parameter
Class
Class type
Cubic bezier easing.
Adapted from rebez, which itself is an adaptation of bezier-easing.
make p1 p2
Compute an easing function with from a cubic bezier curve with handle points p1 and p2. The resulting function takes an x value in the range of 0. to 1. (any values outside of this range are clamped) and returns the corresponding y value from the curve Bezier2.make [{ x = 0.; y = 0.}; p1; p2; { x = 1.; y =1.}]. Raises Invalid_argument if the x values of p1 and p2 do not fall in the 0. to 1. interval.
A pair of handle points, p1 and p2.
Default handle pairs corresponding to the similarly named css keywords are provided for reference and convenience.
If none of the standard functions are quite what you're after, there is an interactive tool at cubic-bezier.com that may be helpful for finding the handle points that describe the easing that you desire.
val linear : handlesLinear interpolation = (v2 0. 0.) (v2 1. 1.)
val ease : handlesInterpolation starting slowly, followed by a sharp acceleration and gradually slowing towards the end. = (v2 0.25 0.1, v2 0.25 1.)
val ease_in : handlesInterpolation starting slowly, progressively speeding up until the end. = (v2 0.42 0., v2 1. 1.)
val ease_in_out : handlesInterpolation starting slowly, progressively speeding up before slowing towards the end. = (v2 0.42 0., v2 0.58 1.)
val ease_out : handlesInterpolation starting abruptly, progressively slowing down towards the end. = (v2 0. 0., v2 0.58 1.)