fix #3802 - Copy array attributes from another array. Big thank you to @brunoperdigao, for the help!

src/blenderbim/blenderbim/bim/module/model/array.py

@@ -83,8 +83,17 @@ class EnableEditingArray(bpy.types.Operator, tool.Ifc.Operator):
     def _execute(self, context):
         obj = context.active_object
         element = tool.Ifc.get_entity(obj)
-        data = json.loads(ifcopenshell.util.element.get_pset(element, "BBIM_Array", "Data"))[self.item]
         props = obj.BIMArrayProperties
+        
+        relating_obj = props.relating_array_object
+        
+        if relating_obj:
+            element = tool.Ifc.get_entity(relating_obj)
+            parent_globalid = ifcopenshell.util.element.get_pset(element, "BBIM_Array", "Parent")
+            parent_element = tool.Ifc.get().by_guid(parent_globalid)
+            data = json.loads(ifcopenshell.util.element.get_pset(parent_element, "BBIM_Array", "Data"))[self.item]
+        else:
+            data = json.loads(ifcopenshell.util.element.get_pset(element, "BBIM_Array", "Data"))[self.item]
         props.count = data["count"]
         si_conversion = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
         props.x = data["x"] * si_conversion
@@ -93,7 +102,9 @@ class EnableEditingArray(bpy.types.Operator, tool.Ifc.Operator):
         props.use_local_space = data.get("use_local_space", False)
         props.sync_children = data.get("sync_children", False)
         props.method = data.get("method", "OFFSET")
+        
         props.is_editing = self.item
+        
         return {"FINISHED"}
 
 
@@ -137,6 +148,10 @@ class EditArray(bpy.types.Operator, tool.Ifc.Operator):
 
         tool.Blender.Modifier.Array.set_children_lock_state(element, self.item, True)
         tool.Blender.Modifier.Array.constrain_children_to_parent(element)
+
+        #clears the relating_array_object so it doesn't show again next time
+        props.relating_array_object = None
+        
         return {"FINISHED"}
 
 

src/blenderbim/blenderbim/bim/module/model/prop.py

@@ -87,6 +87,21 @@ def update_type_page(self, context):
     AuthoringData.data["paginated_relating_types"] = AuthoringData.paginated_relating_types()
 
 
+def update_relating_array_from_object(self, context):
+    bpy.ops.bim.enable_editing_array(item=self.is_editing)
+    return
+
+
+def is_object_array_applicable(self, obj):
+    element = tool.Ifc.get_entity(obj)
+    if not element:
+        return False
+    return ifcopenshell.util.element.get_pset(element, "BBIM_Array")
+
+
+
+
+
 class BIMModelProperties(PropertyGroup):
     ifc_class: bpy.props.EnumProperty(items=get_ifc_class, name="Construction Class", update=update_ifc_class)
     relating_type_id: bpy.props.EnumProperty(
@@ -203,6 +218,14 @@ class BIMArrayProperties(PropertyGroup):
         description="Regenerate all children based on the parent object",
         default=False,
     )
+    relating_array_object: bpy.props.PointerProperty(
+        type=bpy.types.Object,
+        name="Copy Array Properties",
+        update=update_relating_array_from_object,
+        poll=is_object_array_applicable,
+    )
+
+
 
 
 class BIMStairProperties(PropertyGroup):

src/blenderbim/blenderbim/bim/module/model/ui.py

@@ -223,6 +223,8 @@ class BIM_PT_array(bpy.types.Panel):
                     row = col.row(align=True)
                     row.prop(props, "z")
                     row.operator("bim.input_cursor_z_array", icon="CURSOR", text="")
+                    row = col.row(align=True)
+                    row.prop(props, "relating_array_object", icon="COPYDOWN")
                 else:
                     row = box.row(align=True)
                     name = f"{array['count']} Items ({array.get('method', 'OFFSET').capitalize()})"