RotateAroundXY = function (line, x, y, angle)
{
    var c = Math.cos(angle);
    var s = Math.sin(angle);

    var tx = line.x1 - x;
    var 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;
}
Rotate a line around the given coordinates by the given angle in radians.

@function Phaser.Geom.Line.RotateAroundXY
@since 3.0.0

@generic {Phaser.Geom.Line} O - [line,$return]

@param {Phaser.Geom.Line} line - The line to rotate.
@param {number} x - The horizontal coordinate to rotate the line around.
@param {number} y - The vertical coordinate to rotate the line around.
@param {number} angle - The angle of rotation in radians.

@return {Phaser.Geom.Line} The rotated line.