Adolfo Reyna
82 lines
2.2 KiB
JavaScript
82 lines
2.2 KiB
JavaScript
"use strict";
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// Taken from https://github.com/facebook/react-native/blob/0b9ea60b4fee8cacc36e7160e31b91fc114dbc0d/Libraries/Animated/src/Easing.js
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.Easing = void 0;
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const bezier_js_1 = require("./bezier.js");
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/**
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* @description The Easing module implements common easing functions. You can use it with the interpolate() API.
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* @see [Documentation](https://www.remotion.dev/docs/easing)
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*/
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class Easing {
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static step0(n) {
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return n > 0 ? 1 : 0;
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}
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static step1(n) {
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return n >= 1 ? 1 : 0;
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}
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static linear(t) {
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return t;
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}
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static ease(t) {
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return Easing.bezier(0.42, 0, 1, 1)(t);
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}
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static quad(t) {
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return t * t;
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}
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static cubic(t) {
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return t * t * t;
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}
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static poly(n) {
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return (t) => t ** n;
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}
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static sin(t) {
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return 1 - Math.cos((t * Math.PI) / 2);
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}
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static circle(t) {
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return 1 - Math.sqrt(1 - t * t);
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}
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static exp(t) {
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return 2 ** (10 * (t - 1));
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}
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static elastic(bounciness = 1) {
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const p = bounciness * Math.PI;
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return (t) => 1 - Math.cos((t * Math.PI) / 2) ** 3 * Math.cos(t * p);
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}
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static back(s = 1.70158) {
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return (t) => t * t * ((s + 1) * t - s);
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}
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static bounce(t) {
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if (t < 1 / 2.75) {
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return 7.5625 * t * t;
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}
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if (t < 2 / 2.75) {
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const t2_ = t - 1.5 / 2.75;
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return 7.5625 * t2_ * t2_ + 0.75;
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}
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if (t < 2.5 / 2.75) {
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const t2_ = t - 2.25 / 2.75;
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return 7.5625 * t2_ * t2_ + 0.9375;
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}
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const t2 = t - 2.625 / 2.75;
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return 7.5625 * t2 * t2 + 0.984375;
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}
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static bezier(x1, y1, x2, y2) {
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return (0, bezier_js_1.bezier)(x1, y1, x2, y2);
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}
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static in(easing) {
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return easing;
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}
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static out(easing) {
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return (t) => 1 - easing(1 - t);
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}
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static inOut(easing) {
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return (t) => {
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if (t < 0.5) {
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return easing(t * 2) / 2;
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}
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return 1 - easing((1 - t) * 2) / 2;
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};
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}
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}
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exports.Easing = Easing;
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