distance between 2 vectors

Questions & Answers
1

hi guys,, i have a target its pivoy position is(6.0,0.0,0.0) and its center(bull eye) is at (0.0,0.8,0.0),, now i want to calculate the distance between these two through script(javascript),,i know distance formula,,but dnt knw how to solve it in script,,please help

2

You want to get the distance between the two Vectors?

Then Vector3.Distance is for you:

Clicky, clicky!!

Or Vector2.Distance:

Hit me!

3

OrangeLightning is right.

Vector3.Distance takes two vectors(a and b) and calculate the distance between them.

var a : Vector3;
var b : Vector3;

var dist = Vector3.Distance(a,b);

is the same as:

var distVec = a - b;
var dist = distVec.magnitude.

magnitude calculates the length of a vector and it's the same as:

var dist = Mathf.Sqrt(distVec.sqrMagnitude);

sqrMagnitude is the squared distance and is the same as:

var sqrDist = distVec.x*distVec.x + distVec.y*distVec.y + distVec.z*distVec.z;

To calculate it without any of the helper functions would be a pain, but fortunately we have them ;) so use them.

4

Hi you can also find this using simple math. You need to draw a triangle that connects the 2 vectors. You use the Pythagorean Theory to determine the length between the two points

so the formula is

Distance = √(x2-x1)²+(y2-y1)²+(z2-z1)²

Alternatively if you want to be inaccurate but faster you can take the absolute values of each float value and add them all together and divide by 2, like so

|x1|+|y1|+|z1|+|x2|+|y2|+|z2|=d/2

Hope that helps