Translate Vector3 by Vector3

Questions & Answers
1

I have a vector position and a vector that i need to translate the position by.

I know of
transform.Translate(vector, relative);

How can I translate the vector in a similar fashion?

2

Something like transform.Translate(0,0,1) takes the rotation into account. So, it’s doing a lot of math to figure out where “+1 z” really goes.

But just your position vector doesn’t have a facing. That means all math is global, which is easy: A=A+B; or A=A+Vector3.forward;

If you are faking a transform, with a quaternion Q and a vector position A, use: A=A+Q*B;. That will move by a version of B rotated by Q.