arcade-physics
Version:
Use Arcade Physics without Phaser.
35 lines • 1.17 kB
JavaScript
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/**
* @author Richard Davey <rich@photonstorm.com>
* @author Florian Mertens
* @copyright 2020 Photon Storm Ltd.
* @license {@link https://opensource.org/licenses/MIT|MIT License}
*/
Object.defineProperty(exports, "__esModule", { value: true });
/**
* Get the shortest distance from a Line to the given Point.
*
* @function Phaser.Geom.Line.GetShortestDistance
* @since 3.16.0
*
* @generic {Phaser.Geom.Point} O - [out,$return]
*
* @param {Phaser.Geom.Line} line - The line to get the distance from.
* @param {(Phaser.Geom.Point|object)} point - The point to get the shortest distance to.
*
* @return {number} The shortest distance from the line to the point.
*/
const GetShortestDistance = (line, point) => {
const x1 = line.x1;
const y1 = line.y1;
const x2 = line.x2;
const y2 = line.y2;
const L2 = (x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1);
if (L2 === 0) {
return false;
}
const s = ((y1 - point.y) * (x2 - x1) - (x1 - point.x) * (y2 - y1)) / L2;
return Math.abs(s) * Math.sqrt(L2);
};
exports.default = GetShortestDistance;
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