sigma/utils/easings.js

A JavaScript library dedicated to graph drawing.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.cubicInOut = exports.cubicOut = exports.cubicIn = exports.quadraticInOut = exports.quadraticOut = exports.quadraticIn = exports.linear = void 0;
/**
 * Sigma.js Easings
 * =================
 *
 * Handy collection of easing functions.
 * @module
 */
var linear = function (k) { return k; };
exports.linear = linear;
var quadraticIn = function (k) { return k * k; };
exports.quadraticIn = quadraticIn;
var quadraticOut = function (k) { return k * (2 - k); };
exports.quadraticOut = quadraticOut;
var quadraticInOut = function (k) {
    if ((k *= 2) < 1)
        return 0.5 * k * k;
    return -0.5 * (--k * (k - 2) - 1);
};
exports.quadraticInOut = quadraticInOut;
var cubicIn = function (k) { return k * k * k; };
exports.cubicIn = cubicIn;
var cubicOut = function (k) { return --k * k * k + 1; };
exports.cubicOut = cubicOut;
var cubicInOut = function (k) {
    if ((k *= 2) < 1)
        return 0.5 * k * k * k;
    return 0.5 * ((k -= 2) * k * k + 2);
};
exports.cubicInOut = cubicInOut;
var easings = {
    linear: exports.linear,
    quadraticIn: exports.quadraticIn,
    quadraticOut: exports.quadraticOut,
    quadraticInOut: exports.quadraticInOut,
    cubicIn: exports.cubicIn,
    cubicOut: exports.cubicOut,
    cubicInOut: exports.cubicInOut,
};
exports.default = easings;