Coexistence of static and unstatic method

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I have this class: http://dpaste.dzfl.pl/95990b4e
and would like that this call "Vector2s vec = Vector2s(42, 23);" 
returns a new object and that this call "vec(44, 26)" set the x 
and y coords from the existing object to 44 and 26.
Is that possible?
I try to check if the object is initialize with "if (is(this))" 
but it seems that this is true for static and unstatic methods.

P.S.: Is the conversion with "to" accurate? Sometimes U or/and V 
are the same as T and then it isn't necessary to cast them. 
Checks "to" if that's the case, and then prevents an explicit 
cast?