POV-Ray : Newsgroups : povray.binaries.images : sweets : Re: sweets Server Time
19 Aug 2022 19:19:29 EDT (-0400)
  Re: sweets  
From: jr
Date: 11 Apr 2022 03:05:00
Message: <web.6253d23e95d05dff5834ab476cde94f1@news.povray.org>

Thomas de Groot <tho### [at] degrootorg> wrote:
> Thanks for this. Could be the next fashion for my dried frog pills. :-)

:-)  attached is a "monkeyed" version of the include, it outputs STL instead of
objects -- you now can 3D print the pills!  :-)

below is the procedure I follow, assumes a GNU/Linux or POSIX-ish environment.

first create/tune a shape the "normal" way, then copy the dictionary into a new
scene where the (renamed) macro is called as:
  #declare n_ = higo2stl(dict);

the value returned is the number of 'facets'.  render the scene with
'all_file=true', creating 'alltext.out' with the STL data embedded.  I then use
'sed' to extract that data, ie
  $ sed -ne '/^P/d;/solid /,/endsolid /p' alltext.out > higo_sweet_{N}.stl

the STL file can be compressed (gzip or xz) to save space.  then convert the STL
to a temp GTS, cleanup the data, and convert to POV-Ray mesh2/mesh.  eg

  $ stl2gts < higo_sweet_3.stl.gz > higo_sweet_3.raw.gts
  $ gtscleanup $TVAL < higo_sweet_3.raw.gts > higo_sweet_3.gts
  $ gts2pov < higo_sweet_3.gts > higo_sweet_3.inc

for the TVAL (threshold) argument I use a small value wrt data values, and
gts2pov takes options (for inside_vector, declared name, etc).

enjoy, jr.

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Download 'higo_sweets_stl.inc.txt' (7 KB)

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