Update regular_solid to work with 4.3 (#5184)

* Update regular_solid to work with 4.3

Added message to install "Extra Mesh Objects" to make this node work again

* update documentation

docs/nodes/generators_extended/regular_solid.rst

@@ -7,11 +7,12 @@ Regular Solid
 Functionality
 -------------
 
-This node is a port to the Regular Solid functions (by dreampainter) now part of the Extra Objects Add-on bundled with Blender
+This node is a port to the Regular Solid functions (by dreampainter) now part of the 'Extra Mesh Objects' Add-on that can be downloaded from the "Get Extensions" panel in the Blender properties
 (https://archive.blender.org/wiki/index.php/Extensions:2.6/Py/Scripts/Add_Mesh/Add_Solid/)
 
 It creates Platonic, Archimedean or Catalan solids
 
+
 Inputs & Parameters
 -------------------
 
@@ -68,4 +69,10 @@ Variations of the cube:
 * Add: Vector-> :doc:`Vector Math </nodes/vector/math_mk3>`
 * Matrix-> :doc:`Matrix In </nodes/matrix/matrix_in_mk4>`
 * List->List Struct-> :doc:`List Repeater </nodes/list_struct/repeater>`
-* Viz-> :doc:`Viewer Draw </nodes/viz/viewer_draw_mk4>`
+* Viz-> :doc:`Viewer Draw </nodes/viz/viewer_draw_mk4>`
+
+
+Notes
+-----
+
+As this node takes functions form the 'Extra Mesh Objects' add-on it wont work if the add-on is not installed, please download it before using the node

nodes/generators_extended/regular_solid.py

@@ -16,13 +16,27 @@
 #
 # ##### END GPL LICENSE BLOCK #####
 
-
 import bpy
+
 from bpy.props import IntProperty, FloatProperty, BoolProperty, EnumProperty, FloatVectorProperty
 try:
     from add_mesh_extra_objects.add_mesh_solid import createSolid
 except ImportError:
-    createSolid = None 
+    try:
+        import os
+        addons_dir = os.path.join(bpy.utils.resource_path('USER'), "extensions", "blender_org")
+        addon_path = os.path.join(addons_dir, "extra_mesh_objects", "add_mesh_solid.py")
+
+        if not os.path.exists(addon_path):
+            createSolid = None 
+        else:
+            import importlib.util
+            spec = importlib.util.spec_from_file_location("add_mesh_solid", addon_path)
+            module = importlib.util.module_from_spec(spec)
+            spec.loader.exec_module(module)
+            createSolid = module.createSolid
+    except:
+        createSolid = None 
 
 from mathutils import Vector
 from sverchok.node_tree import SverchCustomTreeNode
@@ -230,7 +244,7 @@ def process(self):
             return
 
         if createSolid is None:
-            str_error = "There is no 'add_mesh_extra_objects' library. Node 'Regular Solid' does not work for a while. (In Blender 4.2-alpha)"
+            str_error = "This node needs 'Extra Mesh Objects' add-on installed to work properly"
             print(str_error)
             raise Exception(str_error)