remotion/dist/easing.js

"use strict";
// Taken from https://github.com/facebook/react-native/blob/0b9ea60b4fee8cacc36e7160e31b91fc114dbc0d/Libraries/Animated/src/Easing.js
Object.defineProperty(exports, "__esModule", { value: true });
exports.Easing = void 0;
const bezier_1 = require("./bezier");
class Easing {
    static step0(n) {
        return n > 0 ? 1 : 0;
    }
    static step1(n) {
        return n >= 1 ? 1 : 0;
    }
    static linear(t) {
        return t;
    }
    static ease(t) {
        return Easing.bezier(0.42, 0, 1, 1)(t);
    }
    static quad(t) {
        return t * t;
    }
    static cubic(t) {
        return t * t * t;
    }
    static poly(n) {
        return (t) => t ** n;
    }
    static sin(t) {
        return 1 - Math.cos((t * Math.PI) / 2);
    }
    static circle(t) {
        return 1 - Math.sqrt(1 - t * t);
    }
    static exp(t) {
        return 2 ** (10 * (t - 1));
    }
    static elastic(bounciness = 1) {
        const p = bounciness * Math.PI;
        return (t) => 1 - Math.cos((t * Math.PI) / 2) ** 3 * Math.cos(t * p);
    }
    static back(s = 1.70158) {
        return (t) => t * t * ((s + 1) * t - s);
    }
    static bounce(t) {
        if (t < 1 / 2.75) {
            return 7.5625 * t * t;
        }
        if (t < 2 / 2.75) {
            const t2_ = t - 1.5 / 2.75;
            return 7.5625 * t2_ * t2_ + 0.75;
        }
        if (t < 2.5 / 2.75) {
            const t2_ = t - 2.25 / 2.75;
            return 7.5625 * t2_ * t2_ + 0.9375;
        }
        const t2 = t - 2.625 / 2.75;
        return 7.5625 * t2 * t2 + 0.984375;
    }
    static bezier(x1, y1, x2, y2) {
        return (0, bezier_1.bezier)(x1, y1, x2, y2);
    }
    static in(easing) {
        return easing;
    }
    static out(easing) {
        return (t) => 1 - easing(1 - t);
    }
    static inOut(easing) {
        return (t) => {
            if (t < 0.5) {
                return easing(t * 2) / 2;
            }
            return 1 - easing((1 - t) * 2) / 2;
        };
    }
}
exports.Easing = Easing;