POV-Ray : Newsgroups : povray.general : A little help about old vers. Server Time
15 Jun 2025 13:51:14 EDT (-0400)
  A little help about old vers. (Message 70 to 74 of 74)  
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From: GioSeregni
Subject: Re: A little help about old vers.
Date: 14 Jun 2025 21:40:00
Message: <web.684e2383ce24a8bbc3bb525659126100@news.povray.org>
kurtz le pirate <kur### [at] freefr> wrote:
> On 13/06/2025 12:18, GioSeregni wrote:
> >
> >
> > Unfortunately as I feared I tried with MeshLab to increase the resolution, but
> > it introduces errors.
> > As I thought it loses the border between the colors and also inverts (!!) some
> > faces.
> > This is the reason why I always work with my tools. I have an idea, in the next
> > few days I will implement a new feature. It takes the object and extracts the
> > files divided by color. In this way you can improve the parts that need it and
> > then it is easy to join them!
> > See you soon!
> > G.
>
>
> Have a look at this page :
> <https://www.geocities.ws/evilsnack/c2s3.html>
>
>
> A Catmull-Clark Surface Subdivision Suite macros.
>
> This may help you
>
>
>
> --
> kurtz le pirate
> compagnie de la banquise
unfortunately there is a redirect that leads to spam or worse!


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From: GioSeregni
Subject: Re: A little help about old vers.
Date: 14 Jun 2025 21:45:00
Message: <web.684e24f4ce24a8bbc3bb525659126100@news.povray.org>
"jr" <cre### [at] gmailcom> wrote:
> hi,
>
> "GioSeregni" <gms### [at] hotmailcom> wrote:
> > Unfortunately as I feared I tried with MeshLab to increase the resolution, but
> > it introduces errors.
> > As I thought it loses the border between the colors and also inverts (!!) some
> > faces.
>
> I just had a look at what installing MeshLab would entail, but the above changed
> my mind :-).
>
> still, it's true when you write "...but if you want to improve the mesh, which
> is clean (and it's an advantage)...", therefore I suggest:
>
> > This is the reason why I always work with my tools.
>
> if you can export a mesh to a GNU/GTS, that library has loads of tools to work
> with clean (and not so clean :-)) meshes.
>
>
> > I have an idea, in the next
> > few days I will implement a new feature. It takes the object and extracts the
> > files divided by color. In this way you can improve the parts that need it and
> > then it is easy to join them!
>
> and this is where I cannot "follow", why "by color" ?  why not "by component",
> and leave texture/colourising for when the object is used ?
>
>
> regards, jr.

because I use objects, and dividing the components related to the mesh is the
best way to be able to vary colors and manage the smooth. The smooth must have
edges that correspond to the change of material. This is also the reason why, if
it is true that it is possible to multiply the faces, this must be done in an
"intelligent" way, that is, preserving the edges. Then there are many methods
and algorithms.. but they do not work as I intend
BR
G.


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From: GioSeregni
Subject: Re: A little help about old vers.
Date: 14 Jun 2025 22:10:00
Message: <web.684e2a66ce24a8bbc3bb525659126100@news.povray.org>
I explain my working method.
Each layer represents a component, obviously it has its own color. Here I have
activated ALL the layers, but obviously I hide the ones I am not working on.
It is a very practical method. For example, I can disable everything and leave
only the red lights visible, or the bodywork. From the CAD with my tools I can
output in many formats, preserving the information on the color and
transparency, because they are the name of the layer.
What I have to do is implement in the layer name, which declares RGB and ALPHA,
also the name of the object. So that in the povray file you can easily treat the
"finish" by identifying the object. For example, on the bodywork, apply its own
non-standard level of reflection.

Each layer, when the parser creates its mesh, contains one and only one. In this
way I can decide if the parser creates it with triangle or smooth triangle. It
depends on the object, if it has to be tapered.


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From: kurtz le pirate
Subject: Re: A little help about old vers.
Date: 15 Jun 2025 13:16:53
Message: <684f0005$1@news.povray.org>
On 15/06/2025 03:36, GioSeregni wrote:

> unfortunately there is a redirect that leads to spam or worse!
> 
> 


??? No, it's a normal safe site.



-- 
kurtz le pirate
compagnie de la banquise


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From: jr
Subject: Re: A little help about old vers.
Date: 15 Jun 2025 13:50:00
Message: <web.684f0702ce24a8bb3ecaab5e6cde94f1@news.povray.org>
hi,

kurtz le pirate <kur### [at] freefr> wrote:
> On 15/06/2025 03:36, GioSeregni wrote:
>
> > unfortunately there is a redirect that leads to spam or worse!
> >
> ??? No, it's a normal safe site.
>
> --
> kurtz le pirate
> compagnie de la banquise

fwiw, when I visited I got shown a "captcha" to confirm "not robot", which led
to a second popup asking me to "allow" something or other.  "normal" ?  no.
(perhaps you could (re)post those macros ?)


regards, jr.


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