POV-Ray : Newsgroups : povray.general : best way to plot 3D density field : Re: best way to plot 3D density field Server Time
7 Aug 2024 17:24:07 EDT (-0400)
  Re: best way to plot 3D density field  
From: Adrien Beau
Date: 6 Aug 2001 04:43:46
Message: <3B6E58C6.DBD1696F@sycomore.fr>
I am not into that kind of renders, but here are some ideas that
seem feasible. It's up to you to conduct further researches.

At a very simply level, you could define a lot of spheres from
your data. You could make their radius, or their color or texture,
be the F(x,y,z) you are trying to plot. Spheres are the simplest
objects POV handles. Note that you can deform them (using scale,
rotate, translate), giving them an elongated form which could be
suited to represent some derivative information (flow direction,
etc.).

You could also perhaps replace them by blobs, where you can
actually code the intensity of your data as the strength of
the blob. But blobs merge together, and that might not be the
kind of display you want.

Finally, if you want more of an ethereal substance you can
travel around and into, I think media is what you need.
Especially, POV has a density_file type of pattern. It uses
a file that contains a 3D bitmap pattern. At each voxel you
can specify an density value. You could then create a box,
fill it with the media, and prepare for time-consuming renders.

I do not know megaPOV and such patches, so they might have
some even nicer feature.

So, you might want to read the help file (and search these
newsgroups) about

	sphere blob media density_file

Hope this helps.

-- 
Adrien Beau - adr### [at] freefr - http://adrien.beau.free.fr
 Mes propos n'engagent que moi et en aucun cas mes employeurs


Post a reply to this message

Copyright 2003-2023 Persistence of Vision Raytracer Pty. Ltd.