POV-Ray : Newsgroups : povray.general : Smooth level for smooth_triangle. : Re: Smooth level for smooth_triangle. Server Time
3 Mar 2024 08:39:56 EST (-0500)
  Re: Smooth level for smooth_triangle.  
From: Kenneth
Date: 22 Nov 2023 18:05:00
Message: <web.655e85aa84c692a39b4924336e066e29@news.povray.org>
"Kenneth" <kdw### [at] gmailcom> wrote:
>
> ..and converted it to an asci-text STL file. The triangles-- or each
> vertex?-- are of this typical form (not 'smooth triangles', as far as I know)...
>
>  facet normal -0.107895597816 -0.696702897549 0.709199249744
>     outer loop
>       vertex 21.3610057831 0.39481022954 -0.11346334219
>       vertex 22.4441795349 0.273843616247 -0.158073753119
>       vertex 22.0666675568 -0.210549205542 0.393470913172
>     endloop
>

Just to follow up, after a little more research:
FACET means the entire triangle, not an individual vertex. STL files are
composed of flat triangles, not smooth ones. Giovanni's STL image show this too.

-------------------
I am not very happy that MESHMIXER (and CURA) show 'smooth triangle' versions of
the file; I would rather see the raw-triangle representation there. And it seems
that CURA also *outputs* its .stl-to-.gcode 3-D-printing file as a
smooth-triangle version, according to tests that I have made. I have mixed
feelings about that...


Post a reply to this message

Copyright 2003-2023 Persistence of Vision Raytracer Pty. Ltd.