I thought this would be trivial problem, but...

If I have the 4 vertices of two rectangles, is there a quick and easy way

to tell if they overlap. I don't even need the overlapping region!

All I've thoght of so far is brute force checing several cases.

eg. one in other, other in one, one with vertices in other, other with

verticies in one, one with line through other, other with line through

one... I must be missing the boat big time here!

Any help would be GREATLY appreciated!

Thanks,

-Gary