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Article #6296

rotating pictures

#6296
From: Lewis Gordon Pringle Jr.
Date: Thu, 03 Jul 1986 15:23
19 lines
1161 bytes
Is there some reasonable way to rotate pictures.  I cannot find in
hints in IM.  I have seen programs that do it though.

All I can think of is drawing the picture into an offscreen bitmap,
converting all the coordinates to polar, adding the rotation, and
writing the new points into another bitmap.  This, unfourtunately, is
probably rather slow, and causes one to lose the PICT nature of the
picture: that is, I think it can then only be represented as a bitmap,
and thus will be larger than I might like.

Any canned packages to do this?  Any help would be appreciated.

					Appropriate Remarks,
							Lewis.
-- 
My opinions may have changed, but I'm still right!

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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: arc1-ca.pugleaf.net!utzoo!linus!axiom!lewis
From: lewis@axiom.UUCP (Lewis Gordon Pringle Jr.)
Newsgroups: net.micro.mac
Subject: rotating pictures
Message-ID: <276@axiom.UUCP>
Date: Thu, 3-Jul-86 11:23:22 EDT
Article-I.D.: axiom.276
Posted: Thu Jul  3 11:23:22 1986
Date-Received: Fri, 4-Jul-86 00:52:11 EDT
Organization: Axiom Technology, Newton MA
Lines: 19