POV-Ray : Newsgroups : povray.general : Feedback on mushroom cloud : Re: Feedback on mushroom cloud Server Time
30 Jul 2024 20:27:03 EDT (-0400)
  Re: Feedback on mushroom cloud  
From: SharkD
Date: 7 Jul 2008 00:10:01
Message: <web.487196146ed4a16deb867ce10@news.povray.org>
"Tim Attwood" <tim### [at] comcastnet> wrote:
> It's much simpler conceptually if you replace all the
> mesh operation details with more descriptive POV.
>
> Part one describes an animated lathe/SOR, I would
> sketch out on grid paper the profiles of the mushroom
> cloud over time and then make splines that cut
> across the profiles starburst-ways. Then a macro to
> create a lathe object by sampling the splines at a given
> time.

I'm not sure what you mean here. I don't use any meshes, I use lathes only. I
have stored the positions of the control points at certain keyframes, then I
interpolate across these keyframes using a macro.

> Part two describes an animated displacement map,
> since POV doesn't have a true displacement map
> feature you need to decide if you want to use normals,
> or isosurfaces. POV noise is already perlin, so it can
> be animated without pre-rendering. You could look
> at ISO_CSG, it has a SOR, then you could add the
> noise function.

Yes, it's too bad POV doesn't have displacement. It looks much better than
simply using normals.

Since the scene is more or less "done" and no longer in the planning stages in
terms of implementing what is put forth in the tutorial, I was hoping more for
specific alterations or tweaks to make it look better. What I mean is, I've
done all the things listed in the tutorial, npow I just want to make things
look better.

-Mike


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