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From: gefuchs@top.cis.syr.edu (Gill E. Fuchs)
Newsgroups: comp.graphics
Subject: Background images for raytracing
Message-ID: <857@cmx.npac.syr.edu>
Date: 1 Dec 88 21:36:19 GMT
Sender: usenet@cmx.npac.syr.edu
Reply-To: gefuchs@top.cis.syr.edu (Gill E. Fuchs)
Organization: CIS Dept., Syracuse University
Lines: 28

Hi....

I am a newcomer to raytracing and have a few simple and not so simple questions
i would get answered......

I would like to be able to program a routine that cast shades onto the 
horizon (or ground) when there is a shadow for (an object intersecting the path
of the ray to the light). At this moment I have this routine but somehow
I only get the shadow on the objects (shperes in this case) and not on the 
ground....

Secondly, I would like to know how i would be able to create designs or use
existing images to map onto the horizon (or ground). e.g. How would i
make a checker board pattern onto the ground?

Finally, Is there a smiple way of mapping an image onto a sphere or any
other object?

Thank You for all or any help....
--------
Vahid Koussari


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Please Reply to Vahid Koussari:
koussari@rodan.acs.syr.edu			gefuchs@top.cis.syr.edu
Syracuse University Iconic Communications Lab......
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