Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!leah!rpi!batcomputer!cornell!rochester!pt.cs.cmu.edu!andrew.cmu.edu!po0o+ From: po0o+@andrew.cmu.edu (Paul Andrew Olbrich) Newsgroups: comp.graphics Subject: Re: 3-D perceptual abilities Message-ID: Date: 2 Mar 89 16:21:49 GMT References: <2493@masada.cs.swarthmore.edu>, <238@anselm.UUCP> Organization: Class of '92, Carnegie Mellon, Pittsburgh, PA Lines: 25 In-Reply-To: <238@anselm.UUCP> Patrick Farrell writes: > Here is an interesting thought. If there were no shadows everything > would look completely flat. Anybody agree or disagree with > that statement? Better yet, wouldn't everything look wierd if we didn't get gray shade input? (That is, only information like "this is red," and "this is greenish-blue.") ... And everything was the same level of brightness. No shadows here, and walking through unlit rooms would be easy. Everything would have pretty much of a fake appearance. (Yessir, I'm a wierd one ...) Peter da Silva writes: > I do this, too. Sometimes when I'm bored I'll play games with a regular > pattern like that (fences, tiled floors, bricks) adjusting the perceived > distance to the pattern and so on... I do this with telephone cords occasionally. You just cross your eyes a little and make it appear closer to you. Then you try to reach out and touch it and miss. Works well with most wallpaper, too. Somebody should print up some red-blue wallpaper that's fun to look at when you're wearing 3D glasses ... -- Drew Olbrich po0o+@andrew.cmu.edu "Because cows have a complex four-stomach digestive system, they are technically incapable of vomiting as we know it."