CopyFrom = function (source, dest)
{
    return dest.setTo(source.x1, source.y1, source.x2, source.y2);
}
Copy the values of one line to a destination line.

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

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

@param {Phaser.Geom.Line} source - The source line to copy the values from.
@param {Phaser.Geom.Line} dest - The destination line to copy the values to.

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