Add -transform cube

It is now possible to cut a domain by a cube with rounded corners, which
opens many new possibilities.

Here is an example:

neper -T -n 100 -transform "cut(cube(-0.3,0.7,-0.3,0.7,0.3,0.7,0.001))"

Author: rquey

VERSIONS

@@ -1,3 +1,6 @@
+New in 4.8.2-1 (06 Feb 2024):
+- module -T: added -transform "cut(cube)".
+
 New in 4.8.1 (02 Feb 2024):
 - general: fixed compatibility with Gmsh (version 4.12.2).
 - module -S: added -resmesh orifield,orifieldn.

doc/conf.py

@@ -11,8 +11,8 @@
 import sphinx_rtd_theme
 
 project = u'Neper'
-version = u'4.8.1'
-release = u'4.8.1'
+version = u'4.8.2-1'
+release = u'4.8.2-1'
 author = u'Romain Quey'
 copyright = u'Romain Quey'
 language = 'en'

doc/neper_t.rst

@@ -552,7 +552,7 @@ Transformation Options
 
     - :data:`torus[i](<basis_x>,<basis_y>,<basis_z>,<axis_x>,<axis_y>,<axis_z>,<rad>,<srad>)`: a torus of basis point (:data:`<basis_x>`, :data:`<basis_y>`, :data:`<basis_z>`), axis (:data:`<axis_x>`, :data:`<axis_y>`, :data:`<axis_z>`), radius :data:`<rad>` and section radius :data:`<srad>`;
 
-    - :data:`cube[i](<xmin>,<xmax>,<ymin>,<ymax>,<zmin>,<zmax>)`: a cube of :math:`x`, :math:`y` and :math:`z` coordinates in the specified ranges. (Only :data:`cubei` is available).
+    - :data:`cube[i](<xmin>,<xmax>,<ymin>,<ymax>,<zmin>,<zmax>,<rad>)`: a cube of :math:`x`, :math:`y` and :math:`z` coordinates in the specified ranges, with corners of radius :data:`<rad>`; the radius can take any value, but should typically be non-zero (and larger than the cell size).
 
   - :data:`planecut(<d>,<a>,<b>,<c>)`: cut by the (oriented) plane of equation :math:`a\,x+b\,y+c\,z=d`.
 

src/CMakeLists.txt

@@ -7,7 +7,7 @@ if(POLICY CMP0077)
   cmake_policy(SET CMP0077 NEW)
 endif()
 
-set(NEPER_VERSION \"4.8.1\")
+set(NEPER_VERSION \"4.8.2-1\")
 project(neper)
 
 if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.8.1)