Bug while creating a '.tesr' file from scratch (using a DREAM3D generated structure) and visualizing it as a '.tess' file in NEPER

[Laquelle-493]

Hello @rquey, I started using Neper recently (mainly for generating and meshing structures for CPFE simulations) and am faced with a supposed bug during this process.

Essentially, I created a raster tessellation file from scratch containing the data of a synthetically generated microstructure from DREAM3D. After that, I wanted to visualize it as a '.tess' file and this is where I'm faced with a supposed bug. I had a hunch that it was due to the voxel sizes specified and tried changing it, but it still did not get me the desired result (I got odd/wrong microstructures). I've attached the '.tesr' file that I'm trying to work with as a '.txt' file with the same content (since I could not upload it directly)
I'd appreciate any help in trying to figure out what's wrong!

ebsd_pourneper.txt

$ neper -T -n from_morpho -morpho "tesr:file(ebsd_pourneper.tesr)"

========================    N   e   p   e   r    =======================
Info   : A software package for polycrystal generation and meshing.
Info   : Version 4.10.1
Info   : Built with: gsl|muparser|opengjk|openmp|nlopt|libscotch (full)
Info   : Running on 16 threads.
Info   : <https://neper.info>
Info   : Copyright (C) 2003-2024, and GNU GPL'd, by Romain Quey.
Info   : No initialization file found (`/home/vijay/.neperrc').
Info   : ---------------------------------------------------------------
Info   : MODULE  -T loaded with arguments:
Info   : [ini file] (none)
Info   : [com line] -n from_morpho -morpho
         tesr:file(ebsd_pourneper.tesr)
Info   : ---------------------------------------------------------------
Info   : Reading input data...
Info   : Creating domain...
Info   : Creating tessellation...
Info   :     [i] Parsing file `ebsd_pourneper.tesr'...
Info   :     [i] Parsed file `ebsd_pourneper.tesr'.
Info   :       . Number of cells: 334
Info   :   - Setting seeds... 100%
100%
Info   :       . Listing cell voxels... 100.0%
Warning:       . Sampling factor along x = 0.035764.  Setting to 1...
Warning:       . Sampling factor along y = 0.035764.  Setting to 1...
Warning:       . Sampling factor along z = 0.035764.  Setting to 1...
Info   :       . Number of voxels per cell: min = 1, avg = 3, max = 22.
Info   :   - Running tessellation...
Info   :     > Initial solution: f   =13.575097461
Info   :     > Iteration   1484: fmin=13.557182937 f=13.577552665 ((330 min) 331 void cells)
Info   :     > Iteration   1954: fmin=13.510295816 f=13.513806120 (2 subplex) ((327 min) 328 void cells)Error  : You have discovered a bug in Neper!  Please file an issue at
         https://github.com/rquey/neper/issues.  Thank you.

Aborted (core dumped)