POV-Ray : Newsgroups : povray.binaries.images : Environment mapping Server Time
14 Aug 2024 18:05:08 EDT (-0400)
  Environment mapping (Message 1 to 2 of 2)  
From: Zeger Knaepen
Subject: Environment mapping
Date: 7 Sep 2002 19:02:15
Message: <3d7a8577@news.povray.org>
First image: reflection of a no_image image_mapped sphere, object itself has
no_reflection.  This one is the closest to real environment mapping.

Second image: same as the first, but the object doesn't have no_reflection.

Third image: the image_map is now mapped on the object itself (spherical
mapping).  Sorry, Gilles, but I don't think it looks like reflection :-/

cu!
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ZK AKA SaD
http://www.povplace.be.tf
"You know what they say: No good deed goes unpunished."


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From: Gilles Tran
Subject: Re: Environment mapping
Date: 8 Sep 2002 06:59:15
Message: <3d7b2d83@news.povray.org>

message de news: 3d7a8577@news.povray.org...
> Third image: the image_map is now mapped on the object itself (spherical
> mapping).  Sorry, Gilles, but I don't think it looks like reflection :-/

No, far from it, it's just a hack and it works best on more or less round
objects but there are circumstances where it can come handy, particularly
when it's not possible to use a no_image sphere, or when you want to avoid
truly reflecting objects. Just another little trick...

G.


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