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Any experience with volumetrics?

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https://www.novabbs.com/tech/article-flat.php?id=116832&group=sci.math#116832

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From: chris.m....@gmail.com (Chris M. Thomasson)
Newsgroups: sci.math
Subject: Any experience with volumetrics?
Date: Sun, 23 Oct 2022 19:45:20 -0700
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by: Chris M. Thomasson - Mon, 24 Oct 2022 02:45 UTC

How many perople here have been involved with creating any volumetric
ray marched viewers that can handle a stack of images as slices in a
volumetric 3d view? The power of alpha blending in a volume: Imagine
looking down at your feet and being able to see right through the Earth
and out into deep space. Interesting. Afaict, the alpha is a fourth
dimension in a sense? Take RGB, three ary. RGBA is four ary, a fourth
dimension that allows RGB to become "transparent"... in a sense? Make
any sense to you?

Fwiw, here is an older volumetric of mine. My program rendered the
slices iirc 256^3 resolution, and ImageJ Fiji did the volumes for me:

https://fractalforums.org/gallery/1612-150422031430.jpeg

I have code for this, if interested.

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Subject: Re: Any experience with volumetrics?
From: dohduh...@yahoo.com (sobriquet)
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by: sobriquet - Mon, 24 Oct 2022 04:41 UTC

On Monday, October 24, 2022 at 4:45:29 AM UTC+2, Chris M. Thomasson wrote:
> How many perople here have been involved with creating any volumetric
> ray marched viewers that can handle a stack of images as slices in a
> volumetric 3d view? The power of alpha blending in a volume: Imagine
> looking down at your feet and being able to see right through the Earth
> and out into deep space. Interesting. Afaict, the alpha is a fourth
> dimension in a sense? Take RGB, three ary. RGBA is four ary, a fourth
> dimension that allows RGB to become "transparent"... in a sense? Make
> any sense to you?
>
> Fwiw, here is an older volumetric of mine. My program rendered the
> slices iirc 256^3 resolution, and ImageJ Fiji did the volumes for me:
>
> https://fractalforums.org/gallery/1612-150422031430.jpeg
>
> I have code for this, if interested.

These related recent blender tutorials were kinda fascinating (no raymarching though):

https://www.youtube.com/watch?v=N9Tnmbnl9Yw

https://www.youtube.com/watch?v=NfSPXOhyQDo

Less is more or less more -- Y_Plentyn on #LinuxGER

tech / sci.math / Any experience with volumetrics?

Subject	Author
Any experience with volumetrics?	Chris M. Thomasson
Re: Any experience with volumetrics?	sobriquet