POV-Ray : Newsgroups : povray.general : Cartesian distributions for cellular structures Server Time
1 Mar 2024 19:50:49 EST (-0500)
  Cartesian distributions for cellular structures (Message 1 to 4 of 4)  
From: Thomas Fester
Subject: Cartesian distributions for cellular structures
Date: 10 Jan 2024 11:20:00
Message: <web.659ec326f60e4b6191f41fb48a2a825f@news.povray.org>
Hello everybody,

I produced my last video referring to my Github-site "Modeling nature - basic
structures" (https://github.com/tjrfester/ModelingNature). This time it is about
using cartesian distributions for modeling cellular structures. With the simple
approach used I can only model basic structures where the cells are apart from
each other far enough for not pressing against each other. (Cells deforming each
other can be modeled using negative interactions with blobs, but it will take
some time until I'm there.)

Anyway, here is the video: https://www.youtube.com/watch?v=y60GN-iIjoE

Having finished the basic part, next thing I will do is chemistry - relax and
enjoy...

By the way, I do try to promote my videos on other platforms as well, but I have
the impression in most cases, I'm not really fitting in. Can anybody recommend
communities devoted to script-based modeling other than this Pov-Ray site?

Best regards,

Thomas


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From: Bald Eagle
Subject: Re: Cartesian distributions for cellular structures
Date: 10 Jan 2024 12:25:00
Message: <web.659ed244e60e5ef51f9dae3025979125@news.povray.org>
"Thomas Fester" <tfe### [at] scivitde> wrote:

Good job, Thomas.

You can try and see where you find some traction.

There are social media netwroks that you can post your work and links.
Gab
Xephula
Bastyon
Bitchute
Brighteon
etc.

You might also solicit idea for improvement in forums like StackOverflow,
StackExchange, Matlab, Mathematica, as well as Blender, Grasshopper, 3DSMax,
etc.
You could also try making some of your scenes available as models for 3D
printing - which means that you may want to look into OpenSCAD - which is nearly
identical to POV-Ray's SDL.  Then you can post on Thingiverse, etc.

What does your work have in common with various fields?  You cover some math,
biology, chemistry, computer programming, data structures, fractals, art, 3D
structures, ....  so visit sites specializing in those areas, and either just
post your work (as art), or explain your present approach and ask questions
about things you're struggling with, or solicit methods for improvements with
regard to textures, efficiency of memory usage or algorithms, equations to model
structures, growth, differentiation, etc.

You may not get a lot _at first_, but right now you just want to familiarize
yourself with what's out there, build a network, and keep adding levels of
sophistication.


As a (former) chemist, I'm interested in what topics you'll be covering.  :)
Reaction-diffusion would be a great topic to create a robust library for, since
it's the basis of so many natural patterns - it is however, probably going to
present a variety of challenges from the POV-Ray SDL / raytracing perspective.

Shadertoy has a very active community, but approaches things from a radically
different direction from how end-users employ SDL to create geometry in scenes.
On the other hand, it's compiled, FAST, you can edit your scripts while the
compiled version in running in a browser window, and rapidly explore different
ideas.

Then you have things like javascript, Processing, and all manner of other
computer languages that can be used to write programs that generate data sets or
even whole POV-Ray scripts.

- Bill


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From: Thomas Fester
Subject: Re: Cartesian distributions for cellular structures
Date: 11 Jan 2024 13:00:00
Message: <web.65a02c52e60e5ef591f41fb48a2a825f@news.povray.org>
"Bald Eagle" <cre### [at] netscapenet> wrote:
> "Thomas Fester" <tfe### [at] scivitde> wrote:
>
> Good job, Thomas.
>
> You can try and see where you find some traction.
>
> There are social media netwroks that you can post your work and links.
> Gab
> Xephula
> Bastyon
> Bitchute
> Brighteon
> etc.
>
> You might also solicit idea for improvement in forums like StackOverflow,
> StackExchange, Matlab, Mathematica, as well as Blender, Grasshopper, 3DSMax,
> etc.
> You could also try making some of your scenes available as models for 3D
> printing - which means that you may want to look into OpenSCAD - which is nearly
> identical to POV-Ray's SDL.  Then you can post on Thingiverse, etc.
>
> What does your work have in common with various fields?  You cover some math,
> biology, chemistry, computer programming, data structures, fractals, art, 3D
> structures, ....  so visit sites specializing in those areas, and either just
> post your work (as art), or explain your present approach and ask questions
> about things you're struggling with, or solicit methods for improvements with
> regard to textures, efficiency of memory usage or algorithms, equations to model
> structures, growth, differentiation, etc.
>
> You may not get a lot _at first_, but right now you just want to familiarize
> yourself with what's out there, build a network, and keep adding levels of
> sophistication.
>
>
> As a (former) chemist, I'm interested in what topics you'll be covering.  :)
> Reaction-diffusion would be a great topic to create a robust library for, since
> it's the basis of so many natural patterns - it is however, probably going to
> present a variety of challenges from the POV-Ray SDL / raytracing perspective.
>
> Shadertoy has a very active community, but approaches things from a radically
> different direction from how end-users employ SDL to create geometry in scenes.
> On the other hand, it's compiled, FAST, you can edit your scripts while the
> compiled version in running in a browser window, and rapidly explore different
> ideas.
>
> Then you have things like javascript, Processing, and all manner of other
> computer languages that can be used to write programs that generate data sets or
> even whole POV-Ray scripts.
>
> - Bill

Thanks a lot for these many suggestions... a bit overwhelming, but I will work
on them. I really have been focusing on my own hard drive for to long...

My chemistry chapter will be more about structures. From small molecules to
proteins. Of course in most cases you have to obtain coordinate data from other
sources. The question is, whether Pov-Ray can provide added value to all the
other programs available for visualizing such structures. (I think it can...)

Reaction-diffusion is cool but I only made one try. I will show it here in the
course of this year, then we can have a look.

Thomas


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From: Bald Eagle
Subject: Re: Cartesian distributions for cellular structures
Date: 11 Jan 2024 15:55:00
Message: <web.65a05587e60e5ef51f9dae3025979125@news.povray.org>
"Thomas Fester" <tfe### [at] scivitde> wrote:

> My chemistry chapter will be more about structures. From small molecules to
> proteins. Of course in most cases you have to obtain coordinate data from other
> sources. The question is, whether Pov-Ray can provide added value to all the
> other programs available for visualizing such structures. (I think it can...)

I'm fairly confident that the way I discovered POV-Ray, was looking to do
exactly that, while working on my PhD.

You'll likely find a wide variety of programs that process structures from the
Protein Data Bank, among other formats.

https://www.chemicalgraphics.com/paul/PovChem.html
https://docs.chemaxon.com/display/docs/export-to-pov-ray.md
https://www.training.cam.ac.uk/chem/event/4750012
https://winter.group.shef.ac.uk/orbitron/index.html

..... etc.


> Reaction-diffusion is cool but I only made one try. I will show it here in the
> course of this year, then we can have a look.

Yeah, I had a go at it, at one point - maybe I'll try again soon.
http://www.bugman123.com/Math/

- Bill


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