Move trelis script automatically

docs/source/paramak.parametric_neutronics.rst

@@ -14,14 +14,24 @@ the material tag names. mbsize -ll dagmc.h5m | grep 'mat:'
 
 The creation of the dagmc.h5m file can be carried out via three routes.
 
-Option 1. Use of the `OCC_Faceter <https://github.com/makeclean/occ_faceter/>`_ 
-and the `PPP <https://github.com/ukaea/parallel-preprocessor>`_
+Option 1. Use of `PyMoab <https://bitbucket.org/fathomteam/moab>`_ which is
+distributed with MOAB. Thus method can not imprint or merge the surfaces of the
+geometry that touch. Therefore this method should only be used for single
+components or components that touch on flat surfaces. Curved surfaces converted
+via this method can potentially overlap and cause errors with the particle
+tracking.
 
 Option 2. Use of `Trelis <https://www.coreform.com/products/trelis/>`_ by
-Coreform
-
-Option 3. Use of `PyMoab <https://bitbucket.org/fathomteam/moab>`_ by
-Coreform
+Coreform along with the DAGMC
+`plugin <https://svalinn.github.io/DAGMC/install/plugin.html>`_ / This method
+can support imprinting and merging of shared surfaces between components and is
+therefore suitable for converting more complex CAD geometry to the PyMoab
+method.
+
+Option 3. Use of the `PPP <https://github.com/ukaea/parallel-preprocessor>`_
+and `OCC_Faceter <https://github.com/makeclean/occ_faceter/>`_ . This option
+has not yet been fully demonstrated but is partly included to test the
+promising new method.
 
 To create a model it is also necessary to define the source and the materials
 used. 

paramak/parametric_neutronics/neutronics_model.py

@@ -1,6 +1,8 @@
 
 import json
 import os
+import pathlib
+import shutil
 import warnings
 from collections import defaultdict
 from pathlib import Path
@@ -24,20 +26,23 @@
 class NeutronicsModel():
     """Creates a neuronics model of the provided shape geometry with assigned
     materials, source and neutronics tallies. There are three methods
-    available for producing the imprinted and merged h5m geometry (PyMoab, PPP
-    or Trelis) and one method of producing non imprinted and non merged
-    geometry (PyMoab). make_watertight is also used to seal the DAGMC geoemtry.
-    If using the Trelis option you must have the
-    make_faceteted_neutronics_model.py in the same directory as your Python
-    script. Further details on imprinting and merging are available on the
+    available for producing the the DAGMC h5m file. The PyMoab option is able
+    to produce non imprinted and non merged geometry so is more suited to
+    individual components or reactors without touching surfaces. Trelis is
+    the only method currently able to produce imprinted and merged DAGMC h5m
+    geometry. PPP is a experimental route that has not been fully demonstrated
+    yet but is partly intergrated to test this promising new method.
+    make_watertight is also used to seal the DAGMC geoemtry produced by Trelis.
+    Further details on imprinting and merging are available on the
     DAGMC homepage
     https://svalinn.github.io/DAGMC/usersguide/trelis_basics.html
     The Parallel-PreProcessor is an open-source tool available
     https://github.com/ukaea/parallel-preprocessor and can be used in
     conjunction with the OCC_faceter
     (https://github.com/makeclean/occ_faceter) to create imprinted and
     merged geometry while Trelis (also known as Cubit) is available from
-    the CoreForm website https://www.coreform.com/
+    the CoreForm website https://www.coreform.com/ version 17.1 is the version
+    of Trelis used when testing the Paramak code.
 
     Arguments:
         geometry (paramak.Shape, paramak.Rector): The geometry to convert to a
@@ -304,6 +309,11 @@ def create_neutronics_geometry(self, method=None):
             self.geometry.export_stp()
             self.geometry.export_neutronics_description()
 
+            shutil.copy(
+                src=pathlib.Path(__file__).parent.absolute() /
+                'make_faceteted_neutronics_model.py',
+                dst=pathlib.Path().absolute())
+
             if not Path("make_faceteted_neutronics_model.py").is_file():
                 raise FileNotFoundError(
                     "The make_faceteted_neutronics_model.py was \