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Path: utzoo!linus!decvax!ucbvax!ucdavis!lll-crg!seismo!rochester!ur-cvsvax!srs!matt
From: matt@srs.UUCP (Matt Goheen)
Newsgroups: net.micro.mac
Subject: Easy way to define regions (query)?
Message-ID: <190@srs.UUCP>
Date: Mon, 30-Dec-85 14:08:55 EST
Article-I.D.: srs.190
Posted: Mon Dec 30 14:08:55 1985
Date-Received: Wed, 1-Jan-86 04:24:00 EST
Distribution: net
Organization: S.R. Systems, Rochester NY
Lines: 34


    Is there an easy way to find what lies inside a particular bounded
area and make that area into a region.  For example, if I draw a picture
in MacPaint that contains several closed figures and incorporate that
picture in an application, how can I define a region containing one or
more of these areas?  I'm looking for a "Mac" way to do this, not a
mathamatical solution.  I realize I could do it bit by bit, but is there
an easier way?  Since I only do this in one spot in the application I
am playing with, I don't want anything too big.  I currently just look
at the picture with FatBits in MacPaint and count up the exterior outline.
Then I have to draw about 20 lines to form a polygon.  After I have formed
all the polygons I use DrawPoly after opening up a region to create the
actual region.  Whew!  In other words, I would like to make the following
call:

myPoly = FindPoly(v, h);	OR
myRgn = FindBoundRgn(v, h);

Here, v and h are the coordinates somewhere inside the polygon (or region)
and the function returns a handle to the area it found.  I can't seem to
find anything in QuickDraw that does anything like this (although MacPaint
does this sort of thing all over the place).  Am I missing something or
do you have to actually "WRITE YOUR OWN" (gasp!).

Also, does anyone know of anything that covers programming animation
on the Mac?  I suppose a good book on computer animation would suffice,
any good titles?

Thanks for any and all advice, good or bad (not to imply anything here)...

					
					Matt Goheen
					S.R. Systems
			    {seismo,allegra}!rochester!srs!matt