[vtkusers] vtkOBBTree questions

[David Doria]

1) In this function:

ComputeOBB(vtkPoints *pts, double corner[3], double max[3], double
mid[3], double min[3], double size[3])
"Compute an OBB from the list of points given. Return the corner point
and the three axes defining the orientation of the OBB. Also return a
sorted list of relative "sizes" of axes for comparison purposes."

I don't understand what min, mid, max, size are. It says it returns
the corner and the three axes of the box, but I don't see how that is
encoded in these variables. You'd also need to know the length of each
of the sides of the box - maybe that has something to do with size[]?

2) How would one iterate over every leaf at a particular level of the
tree? For example, say I want to get a list of triangles that are in
each leaf at level 4 of the tree. How would I do that?

Thanks,

David