Path: utzoo!attcan!uunet!snorkelwacker!apple!well!shiva
From: shiva@well.sf.ca.us (Kenneth Porter)
Newsgroups: comp.lang.postscript
Subject: Re: characters in perspective
Summary: Rendering characters through a non-linear transform
Message-ID: <21116@well.sf.ca.us>
Date: 10 Oct 90 18:52:29 GMT
References: <1990Oct5.155219.442@morrow.stanford.edu> <1610@chinacat.Unicom.COM>
Lines: 14



I've also seen Don use a trick in which he replots an image
with a one-pixel clipping path.  He iterates the clip over the
entire target bitmap, and calculates the non-linear transform
(such as perspective) for each corresponding source point.  Of
course, the more pixels in the destination, the more computing
involved, since the picture must be rendered once for each
pixel.  Think of this as painting the original picture through
a one-pixel screen.
 
Woody, do you remember what Don calls this hack?
 
Ken (shiva@well.sf.ca.us)