3d questions

[stu]

Hi, have a few 3D questions. Sorry if they area too simple, an just a
beginner.
- Is worldPosition of a model the center of the model?
- If I want to find a point a certain below (down the y axis) from the
world position, how do I do that?
- If I'm making my 3d scene in Max, how can I define the worldposition
of models? Is the origin fixed when you start your Max file?

Thanks for the support.

[necromanthus]

[q][i]Originally posted by: [b]stu[/b][/i]
1) Is worldPosition of a model the center of the model?
2) If I want to find a point a certain below (down the y axis) from the

world position, how do I do that?

3) If I'm making my 3d scene in Max, how can I define the worldposition
of models? Is the origin fixed when you start your Max file?[/q]

1) only in case of primitives (pivot = bounding box center = geometrical
center).
2) I'm not sure what do you mean with "find a point a certain below", but you
can cast a ray and check out the '#isectPosition'
3) select the model, click on "Hierarchy / Affect Pivot Only" and set the
position & rotation of the pivot as you like.

cheers

[stu]

Thanks.