On 11.04.2024 15:09, Kenneth wrote:
> 
> You might be interested in the attached image ;-)

Sorry, don't have much time for a complete answer - some job retracted 
me from experiments with single pixels and finding bugs ;-)

What as to your previous image, yes, it shows tessellation at work. 
That's a bit tricky stuff. Surely there are some ready-made libraries 
for that, but it takes time to just read about it - it's not an easy 
task (I mean tessellation. However, on the other hand, reading is too), 
that's why I though of some cheap tricks first.

What as to Python, I'm only starting to look at it, so far I can say it 
definitely helps me making mistakes faster (that is, I don't have to 
wait for a long compilation to discover that I made yet another mistake) ;-)

-- 
Ilyich the Toad
https://dnyarri.github.io/

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So after you have generated your STL files, have you tried editing them to see
how that works out?
Repaired / retriangulated the mesh?

Also, I have an STL file that I need to edit (enlarge a USB connector hole) - do
you have any recommendations for a good STL editor (free).

- BW

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"Bald Eagle" <cre### [at] netscapenet> wrote:
> So after you have generated your STL files, have you tried editing them to see
> how that works out?
> Repaired / retriangulated the mesh?
>
> Also, I have an STL file that I need to edit (enlarge a USB connector hole) - do
> you have any recommendations for a good STL editor (free).

Have look here:
https://www.geeetech.com/blog/tutorials/5-free-stl-editors-how-to-edit-stl-files/

--
http://subcube.com
https://github.com/t-o-k

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"Bald Eagle" <cre### [at] netscapenet> wrote:
> So after you have generated your STL files, have you tried editing them to see
> how that works out?
> Repaired / retriangulated the mesh?
>
> Also, I have an STL file that I need to edit (enlarge a USB connector hole) - do
> you have any recommendations for a good STL editor (free).
>

The only appropriate app I have at present is the free Meshmixer by Autodesk. It
has lots of mesh-repair tools for .stl files and other kinds of meshes, but I
have not yet learned how to use many of those features. And it can re-export the
file as .stl again. It hasn't been updated since 2021(?) but is still available.
There are a lot of instructional websites and videos out there for newbies; I
need to take a look myself.

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On 11.04.2024 20:05, Bald Eagle wrote:

> Also, I have an STL file that I need to edit (enlarge a USB connector hole) - do
> you have any recommendations for a good STL editor (free).

Simplest way for Windows seem to be 3D Builder from Microsoft Store - it 
does complain about some stl files and promises to fix them. 
Unfortunately, it doesn't seem to be forced to say the reason for 
complains, neither it does seem to export text stl, only binary one, 
which I cannot understand, so I can't understand what happened.

So I'm also rather interested in seeing some stl validator/fixer, 
preferrably small, and verbose enough for me to understand what's going on.

-- 
Ilyich the Toad
https://dnyarri.github.io/

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"Tor Olav Kristensen" <tor### [at] TOBEREMOVEDgmailcom> wrote:

> Have look here:
> https://www.geeetech.com/blog/tutorials/5-free-stl-editors-how-to-edit-stl-files/


Thanks TOR and Kenneth - I tried Meshmixer, and other than being a bit fussy and
non-intuitive, I think I managed to get it to work.

We'll see what the guy with the 3D printer says.  ;)

- BW

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"Kenneth" <kdw### [at] gmailcom> wrote:
> [importing the .stl file into CURA, and printing the final model]
>
> The attached image shows the final result: the .stl file brought into my
> printer's software (Ultimaker CURA) then printed with medium-quality settings
> and a standard 0.4mm print nozzle.

Hi Kenneth,

I don't have much to say since I never got into 3D printing, but that final
result looks very good! It's amazing you can take something modeled in POV-Ray
and print it into the real world like that.

Have you tried using gyroid infills? Some people really like them.

Sam

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Possibly of interest to you:

https://www.martinjules.com/projects/single-project?id=5

- BW

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"Bald Eagle" <cre### [at] netscapenet> wrote:
> Possibly of interest to you:
>
> https://www.martinjules.com/projects/single-project?id=5
>

He apparently succeeded in writing his own parser for POV-ray (using Java?) He
mentioned elsewhere that he likes developing real-time rendering techniques;
it's difficult to tell from the video if he implemented that. (BTW, it looks
like he and his school mates(?) are still using v3.6).

It will be interesting to follow this work, to see if they eventually succeed in
coming up with a scheme to *directly* export an STL file (and not just for
mesh/mesh2 triangle-based objects...unless they figure out a way to turn
POV-ray's math-primitive objects and CSG into triangle meshes! *That* would be a
really important development.)

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"Kenneth" <kdw### [at] gmailcom> wrote:

> It will be interesting to follow this work,

Well, the idea was that if you really wanted to, you could contact him directly
and find out all sorts of things.

We can use all the help we can get regarding every aspect of POV-Ray's
development.

- BW

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