CopyFrom = function (source, dest)
{
    return dest.setTo(source.x1, source.y1, source.x2, source.y2, source.x3, source.y3);
}
Copy the values of one Triangle to a destination Triangle.

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

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

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

@return {Phaser.Geom.Triangle} The destination Triangle.