vector confusion

[skylark3]

Regarding vectors:

Why do vectors (when displayed) for points on an object originate from the world space position of the point and not the origin? If a cube has a point on it (e.g. 1,1,1) then it would be reasonable to represent the vector of the point as a line drawn from the origin to the point in space. What we see is a line originating from the point in space 1,1,1 heading outwards.

If the global position of a null is brought into an ice tree, its position in space is represented as a line drawn from the origin.

This confuses me when you, for example, subtract the position of a point from the position of a null; the result is not the same as subtracting 2 nulls with the same worldspace coordinates.

I'm sure there's a very good reason for this, although I'm a little concerned that I won't be able to understand it.

[Mathaeus]

You may check this tutorial

[skylark3]

Thank you for the tutorial link - the 'null trap' was one I was just about to fall into. ICE is very powerful, but there are a lot of hazards for the unwary.