Distance between two points
On 06/01/2014 at 23:11, xxxxxxxx wrote:
Cinema 4D Version: 13,14,15
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.
On 07/01/2014 at 07:20, xxxxxxxx wrote:
your approach doesn't sound very wrong.
Matrix mg1 = op1->GetMg(); Matrix mg2 = op2->GetMg(); Vector p1 = op->GetPointR(); Vector p2 = op->GetPointR(); Float distance = ((mg2 * p2) - (mg1 * p1)).GetLength();
what did you do differently?
On 07/01/2014 at 12:25, xxxxxxxx wrote:
> 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!