New in 4.10.2-45 (07 May 2026):
- module -T: improved import and regularization of tessellations of non-cubical
domains, added -ori transform ori for tesrs, added -statcell
oridisanisoaxes_crys, added -format ovm, fixed -statedge, fixed -stat* scale,
added tessellation keys modenb and groupnb, improved svg output, made minor
bug fixes and improvements.
- module -M: fixed -dim 2 -interface cohesive, fixed -loadmesh on $Topology=0
meshes, made minor other fixes.
- module -S: made minor fixes.
- general: fixed CMake compatibility, added GH actions.
New in 4.10.1 (09 Oct 2024):
- module -M: fixed -part for periodic meshes, fixed compatibility with Gmsh
4.13.1.
New in 4.10.0 (01 Oct 2024):
- general: switched "active" and "passive" for orientation convention (see
incompatibility note below), changed convention for HCP directions.
- module -T: added -format svg, added -n ... -morpho lamellae and (the
equivalent) -morpho lamellar(n=...)", fixed regularization in the case of
curved domain edges, improved -domain and -loadtess to load CAD files (tess,
obj, ovm), added tessellation key length(d_x,d_y,d_z).
- module -M: improved meshing of 2D tessellations with curved domain edges,
made minor bug fixes and improvements.
- module -S: made minor bug fixes.
* Incompatible changes in -T:
- switched "active" and "passive" for orientation convention. The default
convention is now "passive". The orientation data themselves remain the
same. Bumped version numbers to 3.5 for tess, 2.2 for tesr, 2.3 for msh
and 1.1 for sim. When an older tess, tesr, msh or sim is parsed, the
defined convention is changed from active to passive and vice versa. This
ensures no change in Neper's own behavior. Postprocessors that are
sensitive to the change of convention should be updated accordingly.
- changed convention for HCP directions (see the documentation).
- changed -domain "cell(<tess_file>,<cell_id>)" into -domain
"file(<tess_file_>),cell(<cell_id>)".
New in 4.9.0 (15 May 2024):
- module -T: added -per 1 for -morpho cube, added -ori ks (Kurdjumov-Sachs)
and ti_beta2alpha (titanium).
- module -S: fixed -res* odfn.
- module -V: added -data{elt2d,elset2d}trs, added -step final, fixed -show*
<result_component>, added -showmeshsliceelt1d.
New in 4.8.2 (27 Mar 2024):
- module -T: added -transform "cut(cube)", added -morphooptiini ori and id,
improved -transform "cut(cubei)", made minor fixes and improvements.
- module -M: made minor improvements.
- general: fixed compilation on 32-bit systems.
New in 4.8.1 (02 Feb 2024):
- general: fixed compatibility with Gmsh (version 4.12.2).
- module -S: added -resmesh orifield,orifieldn.
New in 4.8.0 (09 Jan 2024):
- module -T: fixed weibull distribution, made minor fixes.
- module -M: changed default value of -order to 2, changed -nset default value
to faces,edges,vertices in 3D and edges,vertices in 2D, fixed msh4 format,
fixed meshing of -transform cut(cylinder) tessellations.
- module -V: fixed -datanodecoofact.
- module -S: changed simulation.config onto simulation.cfg.
- documentation: made minor fix.
- general: cleaned tests.
* Incompatible changes: In -M, changed default value of -order to 2.
New in 4.7.0 (17 Nov 2023):
- module -T: added -ori odf, added -orisampling, improved -domain rodrigues,
added -statcell scale and voxnb, fixed -morpho cube, fixed -transform rmsat,
improved geo format, cleaned code, made minor fixes and improvements.
- module -M: added -statelt vol_orispace, added -meshedge, -meshface and
-meshpoly, made other minor improvements.
- module -S: fixed -res... '\<result>` (result overwriting), made minor
improvements to the simulation directory.
- general: added tutorials "Generating and Meshing a Fundamental Region of
Orientation Space" and "Specifying Orientation Information for Tessellation
Cells", improved installation instructions, added developer documentation,
added CMAKE_INSTALL_COMPLETION.
* Incompatible changes: In -T, now use `-orisampling uniform' in place of
`-ori uniform'. Renamed CMAKE_INSTALL_PREFIX_COMPLETION into
CMAKE_INSTALL_COMPLETION_PREFIX.
New in 4.6.1 (12 Sep 2023):
- module -T: fixed -domain cylinder and circle, fixed tesr reading, made minor
fixes.
- module -M: fixed -elset, fixed -statelset group -elt hex, fixed -statnode
col_stdtriangle, fixed -statelt part in 2D, added -faset for -format inp.
- module -V: fixed -datacellcolscheme ipf for -crysym hexagonal, fixed
-space [i]pf png output.
- general: added tutorial "Installing Neper on Ubuntu 22", updated tests to
pass on Ubuntu 22, made minor compilation fix.
New in 4.6.0 (06 Apr 2023):
- module -T: fixed truncated statistical distributions (from and to), improved
-domain stdtriangle, generalized body key, added elsetbody key, removed legacy
true key.
- module -M: added crystal symmetry to mesh file.
- module -S: added computation of standard deviation (or variance) and other
statistical properties of the results of element-based entities (elset, mesh,
etc.), added -restess odf,odfn and -restesr odf,odfn, made various fixes.
- module -V: fixed -data*colscheme ipf to support hexagonal crystal symmetry
(see the "Plotting an Orientation Color Key" tutorial too), added support for
hexagonal crystal symmetry (pole figures and inverse pole figures), added
-dataelset, -datacellweight and -dataelsetweight, added -res{cell,elt,elset}
odf, added -pfsym uniaxial, improved -step, enabled string completion for
options, added -space ipf, added -ipf* options, added -[i]pfprojlabel and
-[i]pfpolelabel options, extended -space [i]pf to mesh results, made code
overhaul, made minor fixes.
- general: added tutorial, improved testing (including -S), added step, gos
and scale keys, added REAL_PRINT_FORMAT configuration variables.
- documentation: made minor improvements.
New in 4.5.0 (07 Sep 2022):
- module -T: fixed -morpho cube, added -statcell and -statvox
<orientation_descriptor>, added -ori :flat, added -transform ori, made minor
fix to the objective function for tesr (does not change the result), made
minor fixes to -statface and -statpoly, made other minor fixes.
- module -M: added -transform node and ori, fixed -stateltco and -statelsetco,
added -stat{elt,elset}{1d,2d} theta, fixed nsets in 2D, added -statelt and
-statelset <orientation_descriptor>, added -statelset scaleid, added
-statelset* elts,nodenb,nodes, made minor fix to inp output, made minor fixes
and improvements.
- module -S: fixed various bugs related to the initial state, revised odf and
odfn, made minor other improvements.
- module -V: added -datacellsymbol, -datapointsymbol, -lightambient,
-lightsource, -lightdiffuse and -lightreflection options, added -space pf to
plot pole figures, added -space tree to plot a simulation directory, added
-asymptote, added -pfpole, -pfprojection, -pfmode, -pfgrid, -pfkernel,
-pfdir, -pfclustering, -pfsym and -pfshape options, renamed -imageantialias
into -povrayantialiasing, added :shape transformation to color maps, made
minor fixes.
- documentation: made minor improvements.
- general: added tutorials to documentation, fixed FORCE_BUILTIN_*
configuration options, made various installation improvements.
* Incompatible changes: In -V, removed -sceneshadow (merged in -light), renamed
-imageantialias into -povrayantialiasing, moved point shape definition to
-datapointsymbol, rotated long scale title by 180°, changed syntax for custom
color maps from <color1>:<color2>:... to custom(<color1>,<color2>,...).
In -S, changed odf(sigma=<value>) using radians into odf(theta=<value>) using
degrees, changed odfn(sigma=<value>) using radians into odf(theta=<value>) using
degrees.
New in 4.4.1 (09 Mar 2022):
- module -T: improved -morpho lamellar to avoid unrealistically small lamellae
(pos=optimal, reps), added -transform cubei.
- module -M: made minor fix.
- module -V: fixed -dataelsetcol ori, fixed tests.
- general: improved make install.
New in 4.4.0 (02 Mar 2022):
- module -T: added -format sim for tesr, added **oridef to tesr file, removed
*hasvoid from tesr file, made minor improvements to tesr file.
- module -M: made minor fix.
- module -S: fixed backward compatibility, added support of tess- or tesr-only
simulation directories, added -rescell and -restesr, added -step, added
-rescell gos (tesr), made minor fixes and improvements.
- module -V: added -showcrystal and -datacrystal*, improved support of
simulation directory, improved support of EBSD-type data (orientation +
"indexed" fields), generalized -data*rad and -data*trs to take expressions,
renamed -simstep into -step, made minor improvements.
- documentation: made minor fixes and improvements.
- general: added tutorials, added and fixed tests (especially on macOS).
New in 4.3.1 (07 Feb 2022):
- module -T: fixed -ori, added -format sim.
- module -S: added -rescell and -restess, removed report file from simulation
directory (replaced by a hidden file, .sim), made minor fixes and code
improvements.
- documentation: made small fixes and improvements.
- general: fixed tests, improved Bash completion.
New in 4.3.0 (02 Feb 2022):
- website: general overhaul, now includes the documentation, tutorials, etc.
- module -T: added -morpho "lamellar(v=random(...))", added fiber() tess key,
made minor fixes and improvements.
- module -M: added -format phase, fixed -interface discontinuous|cohesive,
fixed inp output, added fiber() mesh key, made minor fixes.
- module -S: renamed result options into -resnode, -reselt and -reselset; added
-resmesh and -res<entity>, added -orispace and -entity, added orientation
distribution computation (-resmesh odf and odfn), fixed merging of simulation
directories, rewrote and cleaned code, made minor improvements.
- module -V: revised options -show* file(<file_name>); added support for
-datanodecol in vtk file, renamed -imagebackground into -scenebackground,
rename -showshadow into -sceneshadow, made minor fixes.
- documentation: moved to html documentation using Sphinx and reStructuredText,
revised description of -V, made minor fixes and improvements.
- general: improved testing, added FORCE_BUILTIN_LIBSCOTCH and
FORCE_BUILTIN_NLOPT.
* Incompatible changes: In -S, renamed options -noderes, -eltres and -elsetres
into -resnode, -reselt and -reselset. -show* file(<file_name>) now takes
individual logical values for the entities instead of a list of entities. In
-V, renamed (rarely used) -imagebackground into -scenebackground and
-showshadow into -sceneshadow.
New in 4.2.0 (11 Jun 2021):
- module -T: added -transform "cut(torus)" for tesses, -transform tesrrenumber,
tesrtranslate, tesrmerge, resetorigin, resetcellid, rmcell, orirotate and
resetlabels, bumped tesr file format to 2.1, improved -morpho tesr when
-transform cut is also used (to generate non-convex domains), made minor
fixes and improvements.
- module -M: multithreaded hex meshing, fixed -faset and bumped msh version
file to 2.2.1 accordingly, fix -showvox, made minor fixes.
- module -V: fixed -showcell "file()", changed default values to -datacellcol
id, -dataelsetcol id and -datavoxedgerad 0 (colors are now generated by
default), made minor improvements.
- module -S: added -elsetres oridisanisoaxes, oridisanisoangles and
oridisanisofact, added -noderes disp, added support for multiphase and
restarted simulations.
- general: integrated NLopt and libscotch in contrib (they do not need to be
installed on the system itself any more), improved CMake, fixed compilation
with GCC 9.3.0.
* Incompatible changes: Neper -S should preferably be used with FEPX v1.2.0 or
greater.
New in 4.1.2 (21 Jan 2021):
- module -T: added custom (user-defined) statistical distribution, added
physical volumes tag to geo file, fixed -statvox, made minor improvements.
- module -M: fixed -elt hex (faset output disabled), made minor fixes.
- documentation: made minor fixes and improvements.
New in 4.1.1 (24 Nov 2020):
- module -T: applied -oridistrib to tesr, fixed -transform cut in 2D, added
tessellation key oridisanisodeltas, made minor code cleaning.
- module -S: added -elsetres, made minor improvements.
- module -V: made minor fixes.
- documentation: made minor improvements and fixes.
- general: made minor fixes.
New in 4.1.0 (21 Oct 2020):
- module -T: extended -group to tesr, added -statgroup, added raster
tessellation keys area, vol, size and oridisaniso*, made minor fixes.
- module -M: sped up -part, added options -sortnode and -sortelt.
- module -V: added options -showedge and -dataedgerad for 2D tesrs, made small
improvements, made minor fixes.
- module -S: extended support of FEPX raw results, extended -*res options to
general expressions based on the mesh and simulation results (or subresults),
added ability to import results from external files, added ability to remove
results, improved terminal output, cleaned code, made minor fixes and
improvements.
- documentation: added several -S examples, made minor fixes and improvements.
New in 4.0.2 (17 Sep 2020):
- module -V: fixed png output (disabled defective povray's version test).
- general: made minor improvements.
New in 4.0.1 (11 Sep 2020):
- module -T: added -transform unindex, fixed -morpho "file(tess_file)",
improved -oriformat, made minor fixes.
- module -M: added col_stdtriangle and col_rodrigues mesh keys, fixed loading
of pre-version 4 tessellations, fixed -meshface, made minor improvements.
- module -V: added -showvoidvox and -datavoidvoxcol, made minor fixes and code
cleaning.
- documentation: made minor fixes and improvements.
New in 4.0.0 (30 Jul 2020):
- general: Neper now has a companion program for polycrystal plasticity, the
new free / open-source finite element software package for polycrystal
plasticity, FEPX (http://fepx.info), added new module -S for post-processing
simulation results, added support for OpenMP on Mac.
- module -T: added option -group to (primarily) represent multiphase materials,
added option -oridistrib to define in-cell orientation distributions, renamed
orientation descriptors from e, ek, er, rtheta, R, q and g to euler-bunge,
euler-kocks, euler-roe, axis-angle, rodrigues, quaternion and rotmat, changed
default orientation descriptor to rodrigues, added support for active and
passive orientation conventions to -oridescriptor, added circularity variable
(as a synonym of sphericity), renamed tessellation key modeid into mode and
lamid into lam, added tessellation key per, added options -stattess and
-stattesr, made minor fixes.
- module -M: revised msh file content to include microstructure definition
(element orientations, groups, etc.), element and node partitions, nsets and
fasets, added options -statmesh, -statmesh0d, -statmesh1d, -statmesh2d,
-statmesh3d and -statmeshco, updated per file, changed default value of
-faset to all, improved -loadmesh, added format msh4 (msh version 4), added
in-elset orientation distributions (as defined by -oridistrib in -T), added
ori and bcs (optional FEPX) output files, added mesh key per, made .per
output optional, cleaned code and made minor fixes.
- module -V: added simulation directory as generated by -S as input data, added
-simstep, added VTK output, added ipf orientation coloring, changed default
color map for real values to viridis (the previous one is available as
'legacy') and added many other colormaps using tinycolormap, fixed colors,
added -datapointedgerad and -datapointedgecol, added -outdir, renamed
-data*colscheme arguments for orientations, revised and extended -data
options accordingly, made minor fixes.
- documentation: improved developer's guide, made minor fixes and improvements.
Note on backward (in)compatibility:
- module -T: renamed orientation descriptors (old tessellation files can be
loaded, but option arguments must be updated), changed default orientation
descriptor to rodrigues in all output files.
- module -M: changed nset and faset default values, added several fields to the
msh file (those who have their own parser will need to update it), made .per
output optional (use -format per to get it).
- module -V: changed default colormap for real values from
blue,cyan,yellow,green to viridis, decreased average brightness.
New in 3.5.2 (12 Mar 2020):
- module -T: fixed -morphooptiobjective, fixed -statface nfaces, added
tessellation keys nfaces_samedomain, nfacenb_samedomain, npolys_samedomain
and npolynb_samedomain, fixed -transform planecut, added -transform
crop(cube(...)) for tess, fixed tess loading, modified syntax of -transform
crop for tesr, minor fixes.
- module -M: fixed meshing of tessellation cut by a sphere, fixed .per file for
2nd-order meshing, fixed 2nd-order meshing with -interface discontinuous and
cohesive, added -transform explode, added -statelt2d length, added -transform
slice, fixed -statelt area for quad element, fixed -nset with discontinuous
or cohesive (interface) mesh, added mesh keys, improved inp format, minor
fixes.
- module -V: minor improvements.
- documentation: minor fixes.
New in 3.5.1 (15 Nov 2019):
- module -T: fixed -morpho from wide grain size distributions, sped up -morpho
tesr using openGJK, added olmap format.
- module -M: added -elt quad9, added -transform rotate, added fasets to .msh
file, fixed -elt hex for non-cubic tessellations.
- module -V: fixed scale labels.
- general: fixed compilation without openMP.
New in 3.5.0 (01 Oct 2019):
- module -T: added -transform slice and oriaverage,
added new statistical distributions to -morpho: beta, lorentzian, studentst,
weibull, breitwigner, expnormal, moffat, pearson7, pseudovoigt and
skewnormal, added endpoints to statistical distributions, added variable
1-sphericity to -morpho, added tessellation keys, added -orioptilogvar,
improved argument reading (multiscale tessellation), improved tesr format,
improved -transform renumber, improved -ori fibre, improved -statcell
convexity, replaced -transform plane with -transform hspace, fixed -loadtesr
file.tesr:..., fixed -statvox e, fixed -for ori, fixed -domain, fixed -morpho
centroidal, fixed tesr reading, fixed vtk output, enrich tesr file, made
minor fixes.
- module -M: added -transform scale, translate and smooth, added
-transporteltmethod, added -transportfepx, added mesh keys, added -performat,
added kocks file to -for fepx:legacy, fixed -interface cohesive for Abaqus,
fixed -elt hex, merged -scale into -transform, speed up -transport, made
minor fixes.
- module -V: added -showvox, added -datavoxcol disori, added colour schemes
R(), r, theta and rtheta, added -imageformat pov:objects, improved
-includepov, fixed visualization of periodic meshes, made small fixes.
- documentation: made minor fixes and improvements.
- general: fixed compilation when GSL and NLopt locally installed, website now
at http://neper.info.
New in 3.4.0 (15 Apr 2019):
- module -T: added tessellation cutting (to get non-convex domains) using
-transform cut, added cell merging and removal using -transform mergecell and
rmcell, added -transform resetcellid, added -ori spread, improved -morpho
lamellar, improved -morpho diameq, added -format stl:bycell, added
tessellation keys, fixed -morpho aspratio and rasterization of periodic
tessellations, fixed -domain circle:split, made small fixes and improvements.
- module -M: made -interface mutliscale, renamed -mesh3dclconv into
-mesh3dclreps, improved -cl, -rcl and -mesh3dclreps argument expressions,
speed up -transport, fixed 2D remeshing, speed up -statelt and -statelset,
added -[r]clface, -[r]cledge and -[r]clver.
- module -V: improved visualization of non-convex cells, fixed visualization of
hex meshes, minor other fixes.
New in 3.3.0 (25 Jul 2018):
- New paper: "R. Quey, A. Villani, and C. Maurice. Nearly uniform
sampling of crystal orientations. J. Appl. Crystallogr., vol. 51,
doi:10.1107/S1600576718009019, 2018."
- module -T: added -ori uniform for uniform orientation distribution,
added sister options -orioptiini, -orioptifix, -orioptistop and
-orioptineigh, added -morpho tocta, columnar, bamboo and aspratio,
fixed -morpho multimodal, improved -morphooptiini, added -transform
translate, fixed tesr output for periodic tessellations, fixed tess to
tesr conversion, added several tessellation keys, merged option -scale
into -transform, made minor improvements.
- module -M: fixed meshing of periodic tessellation with openMP, allowed
Gmsh development versions.
- module -V: improved camera parameters, fixed -slicemesh for hex
meshes.
New in 3.2.0 (23 May 2018):
- general: Neper is now fully multithreaded.
- module -T: improved -morpho, added -morpho variable:value, added -morpho
centroidtol, improved -morphooptiobjective, improved -transform crop, fixed
-n from_morpho, added -transform addbuffer, renamed -datarpt* into -datavox*,
added -transform renumber, added -domain stdtriangle, added **oridata to the
tesr file, added -statvox, speed up tesr generation, added -morphooptilogtime
val_ keys, minor fixes.
- module -M: improved inp format.
- module -V: improved msh reading, added -datapointrad arr, added -datavox
options.
- documentation: small fixes.
New in 3.1.1 (20 Feb 2018):
- New paper: "R. Quey and L. Renversade, Optimal polyhedral description of 3D
polycrystals: Method and application to statistical and synchrotron X-ray
diffraction data, Comput. Methods Appl. Mech. Engrg., vol. 330, pp. 308-333,
2018."
- module -T: fixed -scale, added -domain rodrigues.
- module -M: fixed mesh of regularized tessellation through 2D-mesh pinches
correction, fixed -stat when a tesr is meshed, improved -loadmesh, added
-mesh2dpinchfix, added test on Gmsh's version.
- module -V : fixed -datapolyscale.
- general: fixed use without nlopt or openmp.
New in 3.1.0 (05 Sep 2017):
- module -T: made all options applicable to multiscale tessellations,
improved -morpho for all types of data, improved -morpho*
options, added -n from_morpho to set the number of cells from all
-morpho inputs, added -format stl, added -transform crop and 2d, added
-morphooptilogtesr, added tessellation key 'scale', included openMP
parallelization for -morpho tesr.
- module -M: allowed -interface cohesive -periodic in 2D, improved -dim
for -format geof, improved -format geof, minor fixes.
- module -V: added -datapointrad tor and disc.
- documentation: small fixes.
- general: support OpenMP.
New in 3.0.2 (16 Feb 2017):
- module -T: added -transform scale and transform rotate for scalar
tessellations (.tess), fixed -morpho with -periodic, fixed -morpho
with non-unitary domains, fixed -statedge/-statface theta with
-oricrysym hexagonal, improved -ori, added -morpho
lamellar(v=crysdir), added ***tess/**cell/*crysym section to .tess
file, fixed -morphooptialgo random, small fixes.
- module -M: fixed -interface cohesive in 2D and 3D (for Abaqus), enable
-interface discontinuous and cohesive for periodic tessellations,
added -format msh:binary, fixed faset internal for 3D, added
-transport node:..., changed point keys "elt3d" and "elset3d" into "elt"
and "elset" (now apply to 3D or 2D), small fixes.
- documentation: minor fixes.
New in 3.0.1 (01 Dec 2016):
- module -T: fixed up options -periodic and -morphooptialgoneigh qsort,
added tessellation key `modeid' (for cells), added -morpho
cube(N1,N2,N3) and -morpho square(N1,N2), enabled -loadtess -scale,
added -oricrysym hexagonal, added tessellation keys 'nfacelist' and
'theta', cleaned code, fixed documentation of .tess file, added tests
on conflicing options.
- module -M: added option -scale, fixed hexahedral meshing of periodic
tessellations, added physical groups to .msh, fixed 2D meshes in
Abaqus (.inp) file, fixed up option -faset internal.
- module -V: fixed options -dataseed*.
- general: removed libmatheval dependency, fixed testing.
New in 3.0.0 (12 Sep 2016):
- module -T: added 3 major capabilities: (i) tessellation generation
from morphological cell properties (options starting by -morpho),
(ii) multiscale tessellation generation (using the :: separator), and
(iii) periodic and semi-periodic tessellation generation (option
-periodic); made some other improvements and some clean up all over
the place.
- module -M: added ability to mesh the new tessellations, including
periodic tessellations; added interface meshing using cohesive
elements (option -interface); made small other improvements.
- module -V: made small improvements.
- module -D: replaced by "make test" using CTest.
- new development website: https://github.com/rquey/neper.
New in 2.0.5 (06 Feb 2016):
- module -T: fixed up -domain planes in 3D, added -domain sphere, added
'rotate', 'translate' and 'scale' arguments to -domain, added normal
specification in -morpho lamella, minor other improvements.
- module -M: fixed up vtk output.
- module -V: added -datacellcol id:filename, fixed up options -data*col
id.
- module -D: minor improvements.
New in 2.0.4 (22 Jun 2015):
- module -T: fixed up regularization in 2D, extended -morpho planes to
2D, added semi-periodicity for raster tessellations, minor fixes.
- module -M: fixed up 2D mesh output in Abaqus format, minor fixes.
- module -V: fixed up -datacellcolscheme, improved -cameracoo to account
for the tessellation/mesh dimensions.
New in 2.0.3 (27 Nov 2014):
- module -M: fixed up bug on Mac OS X, fixed up Ctrl-C, fixed up and
speed up option -statpoint 2dmesh*.
- module -T: improved options for 2-scale tessellations, added option
'-clip'.
New in 2.0.2 (29 Sep 2014):
- module -T: fixed up regularization of cylinder tessellations, fixed up
option '-domain planes', added tessellation cell domain, fixed up 3dec
and ply support, added Wavefront obj format, added / fixed up
tessellation keys.
- module -M: added vtk mesh format, fixed up fepx and geof mesh formats,
added extrusion of a 2D mesh to get a 3D mesh (option -dim), fixed up
topology reconstruction.
- module -V: added points plotting as cubes, spheres, cylinders or
ellipsoids (options -showpoint and -datapoint*).
New in 2.0.1 (12 Mar 2014):
- Fixed up compilation on some systems, added support for libscotch
version 6.0, small fixes and cleanups.
- module -T: enabled square and cube tessellations in .tess format,
fixed up cell sorting, made option -id mandatory, improved
regularization of 2D tessellations, added bunch of tessellation
keys, small fixes.
- module -M: added 'domtype' mesh key.
- module -V: fixed up simultaneous tess and mesh printing, fixed up
colouring based on id, improved camera positioning for 2D and 1D
inputs, added coordinate system, improved option -slicemesh, added
options -data*scaletitle, improved -data*scale options.
New in 2.0.0 (10 Jan 2014):
- General: Full restructuring and added many new features. Neper now
has 3 main modules: tessellation module (-T), meshing module (-M) and
visualization module (-V); details are provided below. Added
developer's guide and module (-D). Documentation has been much
improved.
- module -T: added several tessellation algorithms (hardcore Voronoi
and Laguerre Voronoi); added orientation generation (was previously in
-O); significantly sped up tessellation; included and significantly
sped up regularization (was previously in -FM); added 2-scale
polycrystal generation; added 2D and 1D supports; improved statistics;
enabled both scalar (tess) and raster (tesr) outputs; cleaned up tess
file.
- module -M: module for free and mapped meshings (merging of -FM and
-MM). Removed regularization (now in -T); added per-cell mesh size
definition; sped up multimeshing; improved statistics.
- module -V: full restructuring; added support for 2D and 1D
tessellations and meshes; the way all entities are shown (cells,
polyhedra, faces, edges, vertices, germs, 3D/2D/1D/0D element sets and
elements, nodes) can be set in great detail; added transparency.
New in 1.10.3 (26 Nov 2012):
- module -T: added 3dec geometry format, added option -checktess, minor
improvements, added individual file extension support in -stattess,
changed option -neigh 1 to -statp i,f,npl,fal,feql.
- module -FM: added 3dec geometry format; changed "top" and "bot" nset
names for cylindrical domains to "z0" and "z1"; minor bug fixes;
improved fev format support; added individual file extension support in
options -stattess and -statmesh.
- module -O: minor bug fixes.
- module -MM: sped up meshing; fixed -domain, -scale and -nset options,
add .nper file for periodicity conditions; fixed msh output for meshes
with different element dimensions; minor other bug fixes.
- module -VS: sped up meshing reconstruction and PNG file generation,
added option '-camerasky', added option '-showeltedge', sped up mesh
reconstruction, minor fixes
- documentation: minor fixes.
- General: minor fixes.
New in 1.10.2 (O9 Aug 2012):
- module -T: fixed -centroid option.
- module -FM: fixed list of available meshing algorithms. Added
tests.
- module -MM: fixed nset syntax in inp (Abaqus) files.
- module -VS: added capability to plot mapped meshes.
- General: various minor improvements, code cleaning.
New in 1.10.1 (08 June 2012):
- Bug fix to get Neper working after invoquing `make install'.
New in 1.10.0 (04 June 2012):
- General: New (hopefully simpler) installation procedure based on Cmake.
Added support for domains of any convex polyhedral shape.
- module -VS: major code rewriting and option changes. New capabilities
for defining the colours and sizes of the tessellation / mesh
(including gradients). Added options to show only specific parts of the
tessellation / mesh and to view slices of a mesh. Other small
enhancements.
- module -T : added option `-domain' to specify the shape of the domain
(cuboidal, cylindrical or of any convex shape), small bug fixes, added
centroid Voronoi tessellation generation (option -centroid), merged
option -centrecoo into option -morpho, added polyhedron centroid
coordinates in file .stt3, changed option -load to -loadtess, added
output format `.ply' (thanks Ehsan!).
- module -FM: mesh partitionning needs libscotch version 5.1.12 or later,
small bug fixes, changed default value of -faset to "" (i.e. no faset
in output), fixed bug for Abaqus output, added polyhedron centroid
coordinates in file .stt3, added output format `.ply' (geometry only).
- module -MM: new options -dsize and -scale, new option -loadmesh, new
option -outdim, changed arguments of -ttype, changed default value of
-faset to "" (i.e. no faset in output), fixed bug for Abaqus output,
small bug fixes.
New in 1.9.2 (Sep 2011):
- module -T: added option -morpho for specifying the type of grain
structure (equiaxed, columnar or bamboo), merged option -regular
with -morpho, added post-processing -neighbour option for information
on the polyhedron neighbours, added geo (Gmsh geometry) output format
(mostly for visualization), fixed bugs.
- module -MM: proper processing of the input tess files, added msh
(Gmsh) and inp (Abaqus) output formats, added options -morpho and
-centrecoo (as in module -T), small bug fixes, code cleaning.
- module -FM: added geo (Gmsh geometry) output format (mostly for
visualization), small bug fixes.
- documentation: small corrections.
New in 1.9.1 (May 2011):
- module -FM: fixed bug occurring when -mesh3dalgo is not set by the
user. Small other bug fixes.
- module -MM: small bug fixes.
New in 1.9.0 (Apr 2011):
This is a major release. Neper now has its own paper:
"R.Quey, P.R. Dawson and F. Barbe. Large-scale 3D random polycrystal
for the finite element method: Generation, meshing and remeshing.
Computer Methods in Applied Mechanics and Engineering,
Vol. 200, pp. 1729--1745, 2011."
Please cite it in your works if you use Neper.
- General: added option --rcfile to disregard / change the
initialization file; big distribution and source clean up; bug fixes.
- module -T: added capability to generate regular morphologies
(truncated octahedra), tess file format bumped to 1.9; big clean up.
- module -FM: included multimeshing, remeshing and mesh partitioning
capabilities; big clean up. Neper now uses the *standard* Gmsh
distribution for 2D and 3D meshings (versions >=2.4.2). Strongly
reduced memory usage.
- module -O: added capability to handle different orientation
descriptors.
- module -VS: new visualization module to generate publication-quality
images (PNG format) of the tessellations, meshes and more...
New in 1.8.1 (Aug 2009):
- upgraded website at http://neper.sourceforge.net
- module -T: new file format ***tess1.8, new option -restart to load an
existing tessellation (not through std input any more), new option
-printformat, bug fixes.
- module -MM: bug fixes.
- module -FM: new output format mae, new option -restart to restart from
an existing geometry or mesh (options -mesh and -conv removed); new
options -printformat and -maeextension; better mesh numbering (+ new
options -elementfirstid and -nodefirstid), new way to choose the node
sets to output (-nset 4), fixed option -estat, renamed -bwcy-clmin to
-clmin, cleaned bunch of options, bug fixes.
- module -O: added option -euleranglesconvention (Bunge, Roe & Kocks);
new output formats mae and geof (option -format).
- manual: some corrections.
New in 1.8.0 (Jul 2009):
- First GPL-distributed version of Neper.