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Date: Wed, 29 Jun 1994 15:27:28 -0700
From: Allen D Hastings <[e-mail]>
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Subject: Re: growing or stretching object over keyframes
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>x velocity and the sand will appear to build up unevenly).  IMHO the look
>of the strata would add class/realism to the image (if it is supposed to build
>up over long periods), and this can not be achieved by stretching, morphing
>the object, as your strata would stretch as well.

No, it's easy to map the strata or whatever and not have it stretch
during object stretching or morphing.  That's exactly the kind of
thing that the World Coordinates button in the texture panel was
designed for.  Using that option would cause the strata layers to be
nicely "laid down" and revealed as the object grows.  Using multiple
morph targets would allow the top to build unevenly, without the
missing top surface problem of the transparency mapping approach.

- Allen Hastings