User Information:

Cinema 4D Version: 13,14,15

Platform:

Language(s) :

---------

How do I get the distance between two points, in global space?

I have tried to subtract two vectors, and then use GetLenth(), but I get different results depending on the order of the two vectors, and have a feeling I do not do it right.

Yes, it is a basic question I assume, but I have not needed this before now.

To clairify, in this case I want to know how this is done for two null objects, just to make it as simple as possible.

User Information:

Cinema 4D Version: 13,14,15

Platform:

Language(s) :

---------

How do I get the distance between two points, in global space?

I have tried to subtract two vectors, and then use GetLenth(), but I get different results depending on the order of the two vectors, and have a feeling I do not do it right.

Yes, it is a basic question I assume, but I have not needed this before now.

To clairify, in this case I want to know how this is done for two null objects, just to make it as simple as possible.

Hi ingvar,

your approach doesn't sound very wrong.

```
Matrix mg1 = op1->GetMg();
Matrix mg2 = op2->GetMg();
Vector p1 = op->GetPointR()[42];
Vector p2 = op->GetPointR()[31];
Float distance = ((mg2 * p2) - (mg1 * p1)).GetLength();
```

what did you do differently?

Best,

-Niklas

Hi Niklas!

> your approach doesn't sound very wrong.

And you are so right, I have done it correctly. But i used some numbers from another part of my code, where I did it wrong!! So I though my latest calculation also was wrong.

Still I learnt something from you post, I have done it the simple way, like this:

```
Matrix mgA = opA->GetMg();
Matrix mgB = opB->GetMg();
Real distance = (mgA.off - mgB.off).GetLength();
```

And this works, for Nulls, as well as PolygonObjects.

Now also can calculate the distance between points too, thanks!