Update code for new Blender and OCC versions

 - remove hadrcoded cell file names
 - add dll path on windows and python >= 3.8

Lattesh/__init__.py

@@ -19,6 +19,7 @@
 # Lattice Tools. If not, see <https://www.gnu.org/licenses/>. 
 
 
+
 bl_info = {
     "name": "Lattice Tools",
     "author": "Ubiratan S. Freitas",
@@ -47,6 +48,11 @@ else:
         PointerProperty,
     )
 
+    import os
+    if hasattr(os, 'add_dll_directory'):
+        import sys
+        dll_path = os.path.join(sys.prefix, 'Library/bin')
+        dpath = os.add_dll_directory(dll_path)
     from . import (
         operators,
         ui,

Lattesh/operators.py

@@ -25,6 +25,7 @@ from mathutils.bvhtree import BVHTree
 import numpy as np
 import math
 import os
+from glob import glob
 
 try:
     from scipy.spatial import Voronoi, Delaunay
@@ -120,25 +121,16 @@ class Cell:
         self.name = name
 
 
-cell_files = ['hex.cell',
-              'type_2.cell',
-              'type_3.cell',
-              'type_4.cell',
-              'type_5.cell',
-              'type_6.cell',
-              'type_8.cell',
-              'type_9.cell',
-              'type_91.cell',
-              ]
 
 fpath = os.path.dirname(os.path.abspath(__file__)) 
 
-filepath = os.path.join(fpath, 'cells')
 Cells = {}
 cell_items = []
+cell_files = glob(os.path.join(fpath, 'cells/*.cell'))
+cell_files.sort()
 for k, cf in enumerate(cell_files):
     c = Cell()
-    c.from_file(os.path.join(filepath, cf))
+    c.from_file(cf)
     Cells[c.name] = c
     cell_items.append((c.name, c.name, c.name, k))
 
@@ -695,11 +687,9 @@ def occ_compute_node(ev, r=0.5, mesh_pars=(0.1, False, math.radians(60), False),
         location = TopLoc_Location()
         facing = (bt.Triangulation(face, location))
         if facing is not None:
-            tab = facing.Nodes()
-            tri = facing.Triangles()
             local_index = []
-            for k in range(1, tab.Length() + 1):
-                pnt = tab.Value(k)
+            for k in range(1, facing.NbNodes() + 1):
+                pnt = facing.Node(k)
                 point = list(pnt.Coord())
                 dpoint = tuple((np.array(point) * 100).round().astype(np.int32))
                 verts.append(point)
@@ -724,7 +714,7 @@ def occ_compute_node(ev, r=0.5, mesh_pars=(0.1, False, math.radians(60), False),
                     plane_verts.append(local_index)
             else:
                 for i in range(1, facing.NbTriangles()+1):
-                    trian = tri.Value(i)
+                    trian = facing.Triangle(i)
                     np_tri = np.array(list(trian.Get()), dtype=np.int32)
                     np_tri = np.array(local_index[np_tri - 1])
                     if (np_tri - np_tri[ind_tri]).prod() != 0 :