I also got this solution as well... (Sorry for going to another site)
Just to keep the discussion open for a bit, I actually like your solution
because it's more natural to me to use an array. Also, I swear that I've
heard that there could be some problems with xform. Or am I wrong?
Don't apologize for going to another site--the COW is not the jealous type!
The xform solution works well, too, you're right. I don't know of any problems with xform, though of course it and pointPosition are specialized for different tasks. For this particular task, though, it seems the main difference is your preference of vector vs. float array values.