arcade-physics/lib/math/RoundTo.js

Use Arcade Physics without Phaser.

"use strict";
/**
 * @author       Richard Davey <rich@photonstorm.com>
 * @copyright    2020 Photon Storm Ltd.
 * @license      {@link https://opensource.org/licenses/MIT|MIT License}
 */
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * Round a value to the given precision.
 *
 * For example:
 *
 * ```javascript
 * RoundTo(123.456, 0) = 123
 * RoundTo(123.456, 1) = 120
 * RoundTo(123.456, 2) = 100
 * ```
 *
 * To round the decimal, i.e. to round to precision, pass in a negative `place`:
 *
 * ```javascript
 * RoundTo(123.456789, 0) = 123
 * RoundTo(123.456789, -1) = 123.5
 * RoundTo(123.456789, -2) = 123.46
 * RoundTo(123.456789, -3) = 123.457
 * ```
 *
 * @function Phaser.Math.RoundTo
 * @since 3.0.0
 *
 * @param {number} value - The value to round.
 * @param {number} [place=0] - The place to round to. Positive to round the units, negative to round the decimal.
 * @param {number} [base=10] - The base to round in. Default is 10 for decimal.
 *
 * @return {number} The rounded value.
 */
const RoundTo = (value, place, base) => {
    if (place === undefined) {
        place = 0;
    }
    if (base === undefined) {
        base = 10;
    }
    const p = Math.pow(base, -place);
    return Math.round(value * p) / p;
};
exports.default = RoundTo;
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