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Date: Tue, 10 Dec 1996 17:58:52 GMTServer: NCSA/1.4.2Content-type: text/htmlLast-modified: Thu, 24 Oct 1996 20:54:48 GMTContent-length: 2659<html><head> <title>Images Inspired by Chihuly Glass</title></head><body bgcolor="#ffffff" vlink="#004a3c"><CENTER><h1> Images Inspired by Chihuly Glass <br></h1><h2> by Adam Finkelstein</h2></CENTER><a href="http://www.chihuly.com">Dale Chihuly</a>is a Seattle-based artist who works primarily in glass.He is a pioneer in this art form and has received worldwide attentionfor his work. I had the pleasure viewing a large body of his glassat his installation in the Seattle Art Museum in 1992. There are nowords to describe the beauty of his glass. Let it suffice to say thatthe computer-generated images below were inspired by Chihuly glass,but they have a long way to go....<p><hr><p><CENTER> <IMG WIDTH=640 HEIGHT=640 SRC="ash.jpg" border=2></CENTER><p>This is my first attempt at modeling something glass-like. I usedJohn Snyder's generative modeling system to create the geometry.The base and outer rim are splines which were created by randomlyperturbing the control points away from a circle. The colors aresimple spirals of blue and green paint. I used John Snyder's raytracer to create the image from the geometry.<p>Despite its similarity to an ashtray from the 70's, I am quite pleasedwith most the image. Unfortunately, the shadow is too crisp; itexhibits none of the light focusing and spreading that would occur iflight were sent through a real glass dish of that shape. That ledme to the next image:<p><hr><p><CENTER> <IMG WIDTH=640 HEIGHT=640 SRC="black.jpg" border=2></CENTER><p>I looked through some books on Chiluly's art and found that in quite afew photographs, his glass is shown on a black, highly-reflective table.Needless to say, it is a dramatic effect. But more importantly, none ofthe complicated focusing effects appear in the shadow on the table, because there is no shadow on the table -- just a reflection of the glass.<p>So in the image above, I placed the glass on a highly reflective table.Since such a table does not send light up to the glass (except in the mirror direction from the lights) the glass would naturally appear toodark. So I made the ``painted'' areas on the glass emit light, givingthe work a slightly neon-esque effect. People tell me it comes acrossas ``dramatic lighting'' so I'm happy with it.<p><hr><p><CENTER> <IMG WIDTH=512 HEIGHT=512 SRC="rad.jpg" border=2></CENTER><p>This is a work in progress. I am trying to figure out how to renderthese things in Greg Ward's Radiance package.<p><a href="../index.html"> <img align=right width=106 height=65 src="../signature.gif" border=0> </a></body></html>⌨️ 快捷键说明
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