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From: walrus@wam.umd.edu (Udo K Schuermann)
Newsgroups: comp.sys.amiga
Subject: Re: Imagine Question
Keywords: How to do relief?
Message-ID: <1991Jan9.215345.5448@wam.umd.edu>
Date: 9 Jan 91 21:53:45 GMT
References: <460@cbmtor.uucp>
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Reply-To: walrus@wam.umd.edu (Udo K Schuermann)
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In article <460@cbmtor.uucp> caleb@cbmtor.uucp (Caleb J. Howard) writes:
>I'm running Impulse's Imagine software on my Amiga.  In the somewhat thin
>documentation it says that it is possible to use an IFF picture to define
>relief (altitude) on an object.  I have selected the seemingly appropriate
>parameters and cannot get this feature to work as I think it should.  It
>seems only to do a low grade colour mapping.

1. Make sure that you select "Altitude" instead of "Color" in the
   brush requester.

2. Use a grayscale instead of various colors.  Bright will not change
   the change the vector, while dark will create a depression or dent.
   (I hope I didn't get the bright/dark mixed up)

3. Use small patterns rather than large ones.  The bump mapping does
   not create a physical depression in the object but rather affects
   the appearance through shading.  Don't expect large letters to look
   as if stamped into a surface; use bump mapping for altering the
   appearance of a texture, to make something like cloth, an orange,
   perhaps carpet, or wood grain -- all fairly small, fairly regular.

>Any hints or clues will buy the bearer passage to the afterlife of his/her
>choice.

One for Nirvana, please.
And cheers,

 ._.  Udo Schuermann        "How is American beer similar to making love in
 ( )  walrus@wam.umd.edu    a canoe?" -- "Both are f***ing close to water."