Export auto syncs edited meshes if authoring mode enabled. See #1360.

src/ifcblenderexport/blenderbim/bim/export_ifc.py

@@ -20,6 +20,7 @@ class IfcExporter:
         self.set_header()
         if bpy.context.scene.BIMProjectProperties.is_authoring:
             self.sync_object_placements()
+            self.sync_edited_objects()
         extension = self.ifc_export_settings.output_file.split(".")[-1]
         if extension == "ifczip":
             with tempfile.TemporaryDirectory() as unzipped_path:
@@ -45,7 +46,8 @@ class IfcExporter:
                 with open(self.ifc_export_settings.output_file, "w") as outfile:
                     json.dump(jsonData, outfile, indent=None if self.ifc_export_settings.json_compact else 4)
         if bpy.context.scene.BIMProjectProperties.is_authoring:
-            bpy.ops.wm.save_mainfile()
+            if bpy.data.filepath:
+                bpy.ops.wm.save_mainfile()
 
     def set_header(self):
         # TODO: add all metadata, pending bug #747
@@ -80,6 +82,16 @@ class IfcExporter:
             except:
                 pass
 
+    def sync_edited_objects(self):
+        for obj_name in IfcStore.edited_objs.copy():
+            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)
+        IfcStore.edited_objs.clear()
+
     def sync_object_placement(self, obj):
         blender_matrix = np.matrix(obj.matrix_world)
         ifc_matrix = ifcopenshell.util.placement.get_local_placement(

src/ifcblenderexport/blenderbim/bim/handler.py

@@ -12,12 +12,12 @@ def mode_callback(obj, data):
         or not obj.data
         or not isinstance(obj.data, bpy.types.Mesh)
         or not obj.data.BIMMeshProperties.ifc_definition_id
-        or not bpy.context.scene.BIMGeometryProperties.should_auto_update_mesh_representations
+        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":
-        bpy.ops.bim.update_mesh_representation(obj=obj.name)
+        IfcStore.edited_objs.add(obj.name)
 
 
 def name_callback(obj, data):

src/ifcblenderexport/blenderbim/bim/ifc.py

@@ -9,6 +9,7 @@ class IfcStore:
     schema = None
     id_map = {}
     guid_map = {}
+    edited_objs = set()
     pset_template_path = ""
     pset_template_file = None
 

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

@@ -38,12 +38,12 @@ class EditObjectPlacement(bpy.types.Operator):
         self.file = IfcStore.get_file()
         # TODO: determine how to deal with this module dependency
         props = bpy.context.scene.BIMGeoreferenceProperties
-        unit_scale = ifcopenshell.util.unit.calculate_unit_scale(self.file)
         for obj in objs:
             if not obj.BIMObjectProperties.ifc_definition_id:
                 continue
             matrix = np.array(obj.matrix_world)
             if props.has_blender_offset and props.blender_offset_type == "OBJECT_PLACEMENT":
+                unit_scale = ifcopenshell.util.unit.calculate_unit_scale(self.file)
                 # TODO: np.array? Why not matrix?
                 matrix = np.array(
                     ifcopenshell.util.geolocation.local2global(
@@ -306,6 +306,7 @@ class UpdateMeshRepresentation(bpy.types.Operator):
 
         for obj in objs:
             self.update_obj_mesh_representation(context, obj)
+            IfcStore.edited_objs.discard(obj.name)
         return {"FINISHED"}
 
     def update_obj_mesh_representation(self, context, obj):

src/ifcblenderexport/blenderbim/bim/module/geometry/prop.py

@@ -14,7 +14,6 @@ from bpy.props import (
 
 
 class BIMGeometryProperties(PropertyGroup):
-    should_auto_update_mesh_representations: BoolProperty(name="Should Auto Update Representations", default=False)
     # Revit workaround
     should_use_presentation_style_assignment: BoolProperty(name="Force Presentation Style Assignment", default=False)
     # RIB iTwo, DESITE BIM workaround

src/ifcblenderexport/blenderbim/bim/module/geometry/ui.py

@@ -66,10 +66,6 @@ class BIM_PT_mesh(Panel):
         layout = self.layout
         props = context.active_object.data.BIMMeshProperties
 
-        sprops = context.scene.BIMGeometryProperties
-        row = self.layout.row()
-        row.prop(sprops, "should_auto_update_mesh_representations")
-
         row = layout.row(align=True)
         op = row.operator("bim.switch_representation", text="Bake Voids", icon="SELECT_SUBTRACT")
         op.ifc_definition_id = props.ifc_definition_id