Continued grid bugfixing, especially related to export-time syncing.

src/blenderbim/blenderbim/bim/export_ifc.py

@@ -98,9 +98,7 @@ class IfcExporter:
             obj = bpy.data.objects.get(obj_name)
             if not obj:
                 continue
-            representation = IfcStore.get_file().by_id(obj.data.BIMMeshProperties.ifc_definition_id)
-            if representation.RepresentationType == "Tessellation" or representation.RepresentationType == "Brep":
-                bpy.ops.bim.update_mesh_representation(obj=obj.name)
+            bpy.ops.bim.update_mesh_representation(obj=obj.name)
         IfcStore.edited_objs.clear()
 
     def sync_object_placement(self, obj):
@@ -136,7 +134,11 @@ class IfcExporter:
         elif element.is_a("IfcContext"):
             return
 
-        if (element.is_a("IfcElement") and element_collection) or element.is_a("IfcSpatialStructureElement"):
+        if (
+            (element.is_a("IfcElement") and element_collection)
+            or element.is_a("IfcSpatialStructureElement")
+            or element.is_a("IfcGrid")
+        ):
             try:
                 parent_collection = [c for c in bpy.data.collections if c.children.get(element_collection.name)][0]
             except:
@@ -144,6 +146,7 @@ class IfcExporter:
         else:
             parent_collection = obj.users_collection[0]
 
+
         parent_obj = bpy.data.objects.get(parent_collection.name)
         if not parent_obj or not parent_obj.BIMObjectProperties.ifc_definition_id:
             return

src/blenderbim/blenderbim/bim/handler.py

@@ -15,12 +15,15 @@ def mode_callback(obj, data):
             obj.mode != "EDIT"
             or not obj.data
             or not isinstance(obj.data, bpy.types.Mesh)
-            or not obj.data.BIMMeshProperties.ifc_definition_id
+            or not obj.BIMObjectProperties.ifc_definition_id
             or not bpy.context.scene.BIMProjectProperties.is_authoring
         ):
             return
-        representation = IfcStore.get_file().by_id(obj.data.BIMMeshProperties.ifc_definition_id)
-        if representation.RepresentationType == "Tessellation" or representation.RepresentationType == "Brep":
+        if obj.data.BIMMeshProperties.ifc_definition_id:
+            representation = IfcStore.get_file().by_id(obj.data.BIMMeshProperties.ifc_definition_id)
+            if representation.RepresentationType == "Tessellation" or representation.RepresentationType == "Brep":
+                IfcStore.edited_objs.add(obj.name)
+        elif IfcStore.get_file().by_id(obj.BIMObjectProperties.ifc_definition_id).is_a("IfcGridAxis"):
             IfcStore.edited_objs.add(obj.name)
 
 

src/blenderbim/blenderbim/bim/module/geometry/operator.py

@@ -73,6 +73,7 @@ class AddRepresentation(bpy.types.Operator):
 
         if obj.data:
             product = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
+
             context_id = self.context_id or int(bpy.context.scene.BIMProperties.contexts)
             context_of_items = self.file.by_id(context_id)
 
@@ -356,23 +357,6 @@ class UpdateMeshRepresentation(bpy.types.Operator):
 
         new_representation = ifcopenshell.api.run("geometry.add_representation", self.file, **representation_data)
 
-        # if product.is_a("IfcWall"):
-        #    # Generate axis representation
-        #    axis_context_id = get_context_id("Model", "Axis", "MODEL_VIEW")
-        #    old_axis = ifcopenshell.util.element.get_representation(product, "Model", "Axis", "MODEL_VIEW")
-        #    if (
-        #        axis_context_id
-        #        and old_axis
-        #        and context_of_items.ContextType == "Model"
-        #        and context_of_items.ContextIdentifier
-        #        and context_of_items.ContextIdentifier == "Body"
-        #    ):
-        #        has_axis_generator = False
-        #        if has_axis_generator:
-        #            # TODO, just pseudocode for now
-        #            representation_data["geometry"] = axis_generator_function_call
-        #        pass
-
         box_context_id = get_context_id("Model", "Box", "MODEL_VIEW")
         old_box = ifcopenshell.util.element.get_representation(product, "Model", "Box", "MODEL_VIEW")
         if (

src/ifcopenshell-python/ifcopenshell/api/grid/create_axis_curve.py

@@ -15,8 +15,10 @@ class Usecase:
             self.settings[key] = value
 
     def execute(self):
-        if self.settings["grid_axis"].AxisCurve:
-            ifcopenshell.util.element.remove_deep(self.file, self.settings["grid_axis"].AxisCurve)
+        existing_curve = self.settings["grid_axis"].AxisCurve
+        if existing_curve and len(self.file.get_inverse(existing_curve)) == 1:
+            ifcopenshell.util.element.remove_deep(self.file, existing_curve)
+            self.file.remove(existing_curve)
 
         self.settings["unit_scale"] = ifcopenshell.util.unit.calculate_unit_scale(self.file)
         grid = [i for i in self.file.get_inverse(self.settings["grid_axis"]) if i.is_a("IfcGrid")][0]