This is a quick port of Viewstl: an open source way to view Stereo Lithoprahy
Files as shaded on-screen images. STL files, dynamic rotation, scaling and
panning are currently supported. 
3 sample STL files (sample.stl , sample2.stl and X5000sample.stl) are included
in the archive.

Originally made by Doug Dingus (c) 2004
Modified by by Andrew Hall (c) 2019
Ported to AmigaOS4 by Sinan Gürkan 2021

*Usage: (from CLI only)
viewstl <filename.stl>
e.g.
viewstl X5000sample.stl
or
viewstl sample.stl

*Requires
AmigaOS4.1 Final Edition Update2
MiniGL V2.24
Warp3D or Warp3DNova Capable NG Amiga systems

PERMISSION  UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP     NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[generic]                 6996   18092  38.7% -lh5- a33a Jan 10  2020 ViewStl/LICENSE
[generic]                  946    1727  54.8% -lh5- 0816 Feb 22 18:43 ViewStl/README.AMIGAOS4
[generic]                  713    1292  55.2% -lh5- 9aee Jan 10  2020 ViewStl/README.md
[generic]                48115  476451  10.1% -lh5- ae54 Jan 10  2020 ViewStl/sample.stl
[generic]                17960  266148   6.7% -lh5- 9214 Feb 21 15:24 ViewStl/sample2.stl
[generic]                 9538   11420  83.5% -lh5- a3ea Feb 22 18:16 ViewStl/source.info
[generic]                  209     305  68.5% -lh5- 9436 Feb 28 23:17 ViewStl/source/Makefile
[generic]                  682    3057  22.3% -lh5- 1bf5 Feb 21 15:41 ViewStl/source/stl.c
[generic]                  380    1002  37.9% -lh5- 98d8 Jan 10  2020 ViewStl/source/stl.h
[generic]                 6763   21982  30.8% -lh5- 8a87 Feb 28 23:15 ViewStl/source/viewstl.c
[generic]                 6731   21928  30.7% -lh5- 92be Feb 21 15:44 ViewStl/source/viewstl.c.bak
[generic]                 1278    2961  43.2% -lh5- 1c40 Feb 21 15:27 ViewStl/source/viewstl.h
[generic]                35087   81480  43.1% -lh5- 2d6e Feb 28 23:18 ViewStl/viewstl
[generic]                  483     800  60.4% -lh5- b5ce Feb 22 18:41 ViewStl/viewstl.readme
[generic]                39589  419025   9.4% -lh5- ad7e Feb 21 15:30 ViewStl/x5000sample.stl
---------- ----------- ------- ------- ------ ---------- ------------ ----------
 Total        15 files  175470 1327670  13.2%            Mar  1 00:21