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

Phaser 4

/**
 * @author       Richard Davey <rich@photonstorm.com>
 * @copyright    2020 Photon Storm Ltd.
 * @license      {@link https://opensource.org/licenses/MIT|MIT License}
 */
export function RotateLineAround(line, x, y, angle) {
  const c = Math.cos(angle);
  const s = Math.sin(angle);
  let tx = line.x1 - x;
  let ty = line.y1 - y;
  line.x1 = tx * c - ty * s + x;
  line.y1 = tx * s + ty * c + y;
  tx = line.x2 - x;
  ty = line.y2 - y;
  line.x2 = tx * c - ty * s + x;
  line.y2 = tx * s + ty * c + y;
  return line;
}