How do you change the direction (not magnitude) of a Vector2?

I want to:
- get a vector
- change the direction of it
- not change the magnitude.

I've tried to change the direction by applying an offset to the vector2, but this has proven unsuccessful.

My end product should return a normalized vector, so that I can apply speed to it.

 

But if you normalize a vector, then you do change its magnitude.

If you want to rotate the vector to a new direction, you might want to use Quarternion.Euler().

 

As PGJ said, if you normalize the vector before actually using it, then its magnitude shouldn't matter.

If you still need that functionality, you can get the magnitude of the vector before changing it, then once you do change it, normalize it and multiply it by the stored magnitude.