add one unit of distance from vector3 a to vector3 b

Questions & Answers
1

hello all:

so i have object a and object b, and what i want is to take object a position, take object b position and from object a draw a line (imaginary realy, not in unity) to point b and get a point x distance away in that direction.

i made a pic to clarify:

anyway thanks in advance.

2

Its quite simple really, You just need to take both of the vectors, Get the difference between them, then add that difference to one of them. Eg:

Vector3 PointA = new Vector3(1, 2, 3);
Vector3 PointB = new Vector3(-5, 1, 2);
Vector3 PointC;
void Start () {
    
    PointC = PointA+(PointA-PointB);
    Debug.Log(PointC);
}

This Code Outputs:

(7.0, 3.0, 4.0)

Which if you do the math is correct for these values