Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!ll-xn!cit-vax!oddhack!jon From: jon@oddhack.caltech.edu (Jon Leech) Newsgroups: comp.graphics Subject: Re: Ray tracing and caustics. Message-ID: <3211@cit-vax.Caltech.Edu> Date: Sun, 12-Jul-87 04:03:09 EDT Article-I.D.: cit-vax.3211 Posted: Sun Jul 12 04:03:09 1987 Date-Received: Sun, 12-Jul-87 18:08:57 EDT References: <494@cathy.cvedc.UUCP> Sender: news@cit-vax.Caltech.Edu Reply-To: jon@oddhack.Caltech.EDU (Jon Leech) Organization: Caltech Odd Hack Committee Lines: 20 Summary: Expires: Sender: Followup-To: Distribution: Keywords: In article <494@cathy.cvedc.UUCP> cmr@cvedc.UUCP (Chesley Reyburn) writes: >>why it looked less than real. There was something wrong with a transparent >>object in it. I had to refer to a *real* transparent object to figure out >>It has occurred to me that I have never seen such an effect in ray-traced >>texture map for each matte object it eventually falls on. Has anyone >>considered doing this? > >Henri Matisse (among others) noticed this around 1890. This is (I beleive) >the entire basis for 'impressionism'. Jim Blinn is fond of saying that everything in computer graphics was first done before the 20th century. I guess this proves it ... ray tracing in 1890 :-) -- Jon Leech (jon@csvax.caltech.edu || ...seismo!cit-vax!jon) Caltech Computer Science Graphics Group __@/ SUSHIDO - The Way of the Tuna