Cubic bezier implementation in Reason / OCaml.
Adapted from the JavaScript version in https://github.com/gre/bezier-easing.
BezierEasing provides Cubic Bezier Curve easing which generalizes easing functions (ease-in, ease-out, ease-in-out, etc) exactly like in CSS Transitions.
Implementing efficient lookup is not easy because it implies projecting the X coordinate to a Bezier Curve. This micro library uses fast heuristics (involving dichotomic search, newton-raphson, sampling) to focus on performance and precision.
It is heavily based on implementations available in Firefox and Chrome (for the CSS transition-timing-function property).
With esy
, add to your package.json
:
{
"dependencies": {
"rebez": "*",
},
"resolutions": {
"rebez": "github:jchavarri/rebez",
},
}
In Reason:
let easing = Rebez.make(0., 0.99, 0., 0.99);
// `easing` is a function that can receive values from 0.0 to 1.0
let value = easing(0.01); // 0.512011914581
In OCaml:
let easing = Rebez.make 0. 0.99 0. 0.99
(* `easing` is a function that can receive values from 0.0 to 1.0 *)
let value = easing 0.01 (* 0.512011914581 *)
npm install -g esy
git clone https://github.com/jchavarri/rebez/
esy install
esy build
# Runs the "test" command in `package.json`.
esy test