arcade-physics/lib/geom/line/PerpSlope.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 });
/**
 * Calculate the perpendicular slope of the given line.
 *
 * @function Phaser.Geom.Line.PerpSlope
 * @since 3.0.0
 *
 * @param {Phaser.Geom.Line} line - The line to calculate the perpendicular slope of.
 *
 * @return {number} The perpendicular slope of the line.
 */
const PerpSlope = line => {
    return -((line.x2 - line.x1) / (line.y2 - line.y1));
};
exports.default = PerpSlope;
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