@phaserjs/phaser/geom/line/GetShortestLineDistance.js

Phaser 4

/**
 * @author       Richard Davey <rich@photonstorm.com>
 * @author       Florian Mertens
 * @copyright    2020 Photon Storm Ltd.
 * @license      {@link https://opensource.org/licenses/MIT|MIT License}
 */
export function GetShortestLineDistance(line, point) {
  const { x1, y1, x2, y2 } = line;
  const L2 = (x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1);
  if (L2 === 0) {
    return 0;
  }
  const s = ((y1 - point.y) * (x2 - x1) - (x1 - point.x) * (y2 - y1)) / L2;
  return Math.abs(s) * Math.sqrt(L2);
}