Irregular Shaped Rollovers

Date:    Wed, 22 Mar 1995 23:10:35 +1030
From:    Matt Craig <mnmac@FLINDERS.EDU.AU>
Subject: Re: DIRECT-L Digest - 8 Feb 1995 to 9 Feb 1995

if rollover(x) and the mouseCast = the castNum of sprite x then
  doStuff
end if

The rollover function always checks the bounding box, whereas the mouseCast checks the sprite boundary if the ink is set to matte.