POV-Ray : Newsgroups : povray.general : Mesh rendering artifacts Server Time
25 May 2024 22:07:35 EDT (-0400)
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From: yesbird
Subject: Re: Mesh rendering artifacts
Date: 2 Feb 2023 09:35:00
Message: <web.63dbc8e2249f0076ef8f341810800fb2@news.povray.org>
> Anyway, it makes for a good rule of thumb - "always slice meshes parallel to the
> texture gradient".  :)

Well said ! :)

> Matlab probably has a lot of routines that allow the user to manipulate
> arbitrary data in ways that POV-Ray currently cannot.  Data that has no equation
> that it's derived from.   Random points, measurement data, statistics, etc.

Yes, this is the case when we can pass data, not formulas and POV will do the
rest.

> Also, I'm curious as to what a VERY large "3D" thing would look like in MatLab -
> something that extends deep into the screen.

I have experience working with Point Cloud toolbox and it was a sad experience -
works too slow, visualization is poor.

> One final thing that most might not consider as a pertinent issue:
> ...
> Laugh all you want, but...    I'll start working on that tin-foil texture.

Not so funny as it could be at least 10 years ago :(. I thought about all this
things before start sticking to ML, and know that there is some risk here.

This is the reason, why I am prefer R for some of my projects and trying to
separate SDL code from ML as much as possible for easely porting it to R in
future, using the same *.inc called from different language.

> When most everything is worked out and running, it probably won't be that big of
> a deal, but for debugging sanity, it might be worth putting labeled axes in the
> scene, and defining the transform matrix at the top of the scene, with a few
> lines of comments describing exactly what it does and why it's there.

You are right - accepted )

--
YB


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From: yesbird
Subject: Re: Mesh rendering artifacts
Date: 2 Feb 2023 09:45:00
Message: <web.63dbcc18249f0076ef8f341810800fb2@news.povray.org>
> https://www.dimensions-math.org/
> https://www.chaos-math.org/en.html
>
> I've made a few animations before - but an entire 2 hours done with nothing but
> POV-Ray    :O

Very well done, taking into account time spent and number of tools used.
This is very close to thing I am planning to implement with POV-Lab.

> Very cool.  You should check out Inigo Quilez of Shadertoy on YouTube and
> Martijn Steinrucker (YT; Art of Code) - they both do some amazing graphics and
> animation work starting from almost nothing.

Thanks, Martijn Steinrucker - I know this guy !
He inspired me to make this experiments with shaders and camera (must have for
this site):

https://virtualkiln.ru/

And now I am getting back to coding. )


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From: Bald Eagle
Subject: Re: Mesh rendering artifacts
Date: 4 Feb 2023 14:20:00
Message: <web.63deaf4e249f00761f9dae3025979125@news.povray.org>
"yesbird" <nomail@nomail> wrote:

> Please keep me informed, I would like to see even intermediate results.

Nice archive - I might see about playing with some of the fundamental shapes and
styles to see if I can make macros for some YesObjects :)

But for the moment, here's just a simple doodle.


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Attachments:
Download 'coffeecup.png' (153 KB)

Preview of image 'coffeecup.png'
coffeecup.png


 

From: Alain Martel
Subject: Re: Mesh rendering artifacts
Date: 4 Feb 2023 14:37:46
Message: <63deb40a$1@news.povray.org>
Le 2023-02-04 à 14:17, Bald Eagle a écrit :
> "yesbird" <nomail@nomail> wrote:
> 
>> Please keep me informed, I would like to see even intermediate results.
> 
> Nice archive - I might see about playing with some of the fundamental shapes and
> styles to see if I can make macros for some YesObjects :)
> 
> But for the moment, here's just a simple doodle.
> 
That «yes» bring back memories of the late 60's and 70's...


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From: yesbird
Subject: Re: Mesh rendering artifacts
Date: 8 Feb 2023 19:10:00
Message: <web.63e438b5249f00767eb01f2810800fb2@news.povray.org>
> But for the moment, here's just a simple doodle.

Good for the start :)


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From: yesbird
Subject: Re: Mesh rendering artifacts
Date: 8 Feb 2023 19:20:00
Message: <web.63e43b06249f00767eb01f2810800fb2@news.povray.org>
May be you will like attached font, downloaded from https://www.fonts101.com


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Attachments:
Download 'classic-yes-font.ttf.dat' (21 KB)

From: yesbird
Subject: Re: Mesh rendering artifacts
Date: 8 Feb 2023 21:30:00
Message: <web.63e45a8a249f00767eb01f2810800fb2@news.povray.org>
This one )


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Preview of image 'temp_tests.png'
temp_tests.png


 

From: Bald Eagle
Subject: Re: Mesh rendering artifacts
Date: 9 Feb 2023 06:45:00
Message: <web.63e4dc1a249f00761f9dae3025979125@news.povray.org>
"yesbird" <nomail@nomail> wrote:
> This one )

Nice.
You of course need to apply an --- Edge detection filter to that.   ;)

Or ... something close to one.   :D


- BE


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From: Kenneth
Subject: Re: Mesh rendering artifacts
Date: 10 Feb 2023 14:50:00
Message: <web.63e69f34249f00769b4924336e066e29@news.povray.org>
"Bald Eagle" <cre### [at] netscapenet> wrote:
>
> I've made a few animations before - but an entire 2 hours done with nothing but
> POV-Ray    :O
>

Final_Frame=172800

cylinder{-1*y,1*y,0.2 rotate frame_number*5*z
pigment{rgb 1}
}

Two hours of thrills! Even more exciting than AVATAR!   :-D

BTW, I still have my original copy of Roger Dean's VIEWS art book, from 1975.
Cherished!


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From: yesbird
Subject: Re: Mesh rendering artifacts
Date: 10 Feb 2023 17:00:00
Message: <web.63e6bdcc249f0076768b900310800fb2@news.povray.org>
> Two hours of thrills! Even more exciting than AVATAR!   :-D

Thanks, I will try this tonight :).

>
> BTW, I still have my original copy of Roger Dean's VIEWS art book, from 1975.
> Cherished!

You are a lucky man, this is fundamental work for me.


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