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Date:     Sat, 7 Aug 1993 11:18:30 -0700
From: "Stuart H. Ferguson" <rutgers!well.sf.ca.us!shf>
To: bobsbox.rent.com!lightwave, hpmwmat.sr.hp.com!mikep
Subject: Re:  Underwater texture

+-- Mike Powell writes:
| I've been messing around with the underwater texture lately
| and am not getting the kinds of patterns I've seen in
| animations like those starring Fred Floaty  :-)
|
| What I've been getting is basicaly 'rings'.  Like the rings
| in a log.  I have been using the default setting of 3 wave
| sources, expecting to get a parretn more complex than what I've
| been getting.  Higher settings seem to make no difference here.
| What might I be doing wrong?

Probably your texture size is too small.  The textures that use wave
sources -- underwater and ripples -- are somewhat odd in how they
define texture size.  It defines a box around which the wave sources
will be distributed, so if the box is too small to encompass your
whole object, the waves will all radiate from a central point and
you'll get rings.  Wavelength determines what we would normally think
of as texture size.

        Stuart Ferguson        ([e-mail])
            Prepare to Surge to Sublight Speed!