# add one unit of distance from vector3 a to vector3 b

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.

[1]: /storage/temp/133836-sin-titulo.png

**Answer** by AaronBacon
·
Feb 27 at 12:27 AM

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

thanks! it worked perfectly.

as a follow up question: how can i ADD to that vector3.

i tried multiplying and it works but im wondering if i can just add 1, 2 or 10 units of distance in that direction.

again, thanks for the replay, have a good day, :D

You can use Vector3.x for example, to get the individual elements of the Vector 3, eg:

```
PointA.x = PointA.x + 5 // Add 5 to the X component
PointB.y = PointB.y -10 // take 10 from Y Component
```

It's easier to get the individual components as floats or integers and manipulate them like that

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