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From: Jeric@cup.portal.com
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To: lightwave-l@netcom.com
Subject: Re: ATOMIC MODEL
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Date: Mon, 17 Oct 94 00:30:28 PDT
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> > I'm trying to create a basic model of the Bohr Atom and I want to
> > achieve an effect whereby the electron spinning around
> > the nucleus leaves a trail behind it showing its previous path.
> > I've got a nicely spinning electron but no amount of messing
<SNIP>
>
>Build a torus for the flight path and center it on the rotational center for
>the atom. Attach a cylindrical transparency map of an IFF gradiating from 0% t
o
>100%, then make sure the seam of the texture is where the atom is. Use
>smoothing and transparent edges (values will depend on the scale of your
>objects, experiment with the values) and you should have a path following your
>atom that slowly fades away.
Alan, are you saying rotate the torus with the electron?
If so, as presented, I don't think that it would be a convincing
illusion. I suggest adding some fractal noise with a velocity, or
maybe world coordinates, to get more of a "vapor trail" effect.
>
>For an example, check out a JPEG of one of my animations called Orion.jpg on
>the tomahawk site at tomahawk.welch.jhu.edu:pub/LW/framestores