Add new import workaround for 12D files with absolute coordinates.

src/ifcblenderexport/blenderbim/import_ifc.py

@@ -164,6 +164,8 @@ class IfcImporter():
                 self.ifc_import_settings.should_ignore_site_coordinates = True
             if self.is_ifc_class_far_away('IfcBuilding'):
                 self.ifc_import_settings.should_ignore_building_coordinates = True
+        elif applications[0].ApplicationFullName == '12D Model':
+            self.ifc_import_settings.should_reset_absolute_coordinates = True
 
     def is_ifc_class_far_away(self, ifc_class):
         for site in self.file.by_type(ifc_class):
@@ -171,13 +173,15 @@ class IfcImporter():
                     or not site.ObjectPlacement.RelativePlacement \
                     or not site.ObjectPlacement.RelativePlacement.Location:
                 continue
-            coordinates = site.ObjectPlacement.RelativePlacement.Location.Coordinates
+            if self.is_point_far_away(site.ObjectPlacement.RelativePlacement.Location):
-            # Arbitrary threshold based on experience
-            if abs(coordinates[0]) > 1000000 \
-                    or abs(coordinates[1]) > 1000000 \
-                    or abs(coordinates[2]) > 1000000:
                 return True
 
+    def is_point_far_away(self, point):
+        # Arbitrary threshold based on experience
+        return abs(point.Coordinates[0]) > 1000000 \
+            or abs(point.Coordinates[1]) > 1000000 \
+            or abs(point.Coordinates[2]) > 1000000
+
     def patch_ifc(self):
         project = self.file.by_type('IfcProject')[0]
         if self.ifc_import_settings.should_ignore_site_coordinates:
@@ -188,6 +192,24 @@ class IfcImporter():
             buildings = self.find_decomposed_ifc_class(project, 'IfcBuilding')
             for building in buildings:
                 self.patch_placement_to_origin(building)
+        if self.ifc_import_settings.should_reset_absolute_coordinates:
+            self.reset_absolute_coordinates()
+
+    def reset_absolute_coordinates(self):
+        # 12D can have some funky coordinates out of any sensible range. This
+        # method will not work all the time, but will catch most issues.
+        offset_point = None
+        for point in self.file.by_type('IfcCartesianPoint'):
+            if len(point.Coordinates) == 2 or not self.is_point_far_away(point):
+                continue
+            if not offset_point:
+                offset_point = (point.Coordinates[0], point.Coordinates[1], point.Coordinates[2])
+                self.ifc_import_settings.logger.info(f'Resetting absolute coordinates by {point}')
+            point.Coordinates = (
+                point.Coordinates[0] - offset_point[0],
+                point.Coordinates[1] - offset_point[1],
+                point.Coordinates[2] - offset_point[2]
+            )
 
     def find_decomposed_ifc_class(self, element, ifc_class):
         results = []
@@ -545,6 +567,7 @@ class IfcImportSettings:
         self.should_auto_set_workarounds = True
         self.should_ignore_site_coordinates = False
         self.should_ignore_building_coordinates = False
+        self.should_reset_absolute_coordinates = False
         self.should_import_curves = False
         self.should_treat_styled_item_as_material = False
         self.should_use_cpu_multiprocessing = False

src/ifcblenderexport/blenderbim/prop.py

@@ -331,6 +331,7 @@ class BIMProperties(PropertyGroup):
     export_should_use_presentation_style_assignment: BoolProperty(name="Export with Presentation Style Assignment", default=False)
     import_should_ignore_site_coordinates: BoolProperty(name="Import Ignoring Site Coordinates", default=False)
     import_should_ignore_building_coordinates: BoolProperty(name="Import Ignoring Building Coordinates", default=False)
+    import_should_reset_absolute_coordinates: BoolProperty(name="Import Resetting Absolute Coordinates", default=False)
     import_should_import_curves: BoolProperty(name="Import Curves", default=False)
     import_should_auto_set_workarounds: BoolProperty(name="Automatically Set Vendor Workarounds", default=True)
     import_should_treat_styled_item_as_material: BoolProperty(name="Import Treating Styled Item as Material", default=False)

src/ifcblenderexport/blenderbim/ui.py

@@ -574,31 +574,39 @@ class BIM_PT_mvd(Panel):
         scene = context.scene
         bim_properties = scene.BIMProperties
 
-        layout.label(text="Custom MVD:")
+        layout.label(text='Custom MVD:')
 
         row = layout.row()
-        row.prop(bim_properties, "export_has_representations")
+        row.prop(bim_properties, 'export_has_representations')
         row = layout.row()
-        row.prop(bim_properties, "import_should_import_curves")
+        row.prop(bim_properties, 'import_should_import_curves')
 
-        layout.label(text="Experimental Modes:")
+        layout.label(text='Experimental Modes:')
 
         row = layout.row()
-        row.prop(bim_properties, "import_should_use_legacy")
+        row.prop(bim_properties, 'import_should_use_legacy')
         row = layout.row()
-        row.prop(bim_properties, "import_should_use_cpu_multiprocessing")
+        row.prop(bim_properties, 'import_should_use_cpu_multiprocessing')
 
-        layout.label(text="Revit Workarounds:")
+        layout.label(text='Vendor Workarounds:')
 
         row = layout.row()
-        row.prop(bim_properties, "import_should_auto_set_workarounds")
+        row.prop(bim_properties, 'import_should_auto_set_workarounds')
+
+        layout.label(text='12D Workarounds:')
+
         row = layout.row()
-        row.prop(bim_properties, "export_should_export_all_materials_as_styled_items")
+        row.prop(bim_properties, 'import_should_reset_absolute_coordinates')
+
+        layout.label(text='Revit Workarounds:')
+
         row = layout.row()
-        row.prop(bim_properties, "export_should_use_presentation_style_assignment")
+        row.prop(bim_properties, 'export_should_export_all_materials_as_styled_items')
         row = layout.row()
-        row.prop(bim_properties, "import_should_ignore_site_coordinates")
+        row.prop(bim_properties, 'export_should_use_presentation_style_assignment')
         row = layout.row()
-        row.prop(bim_properties, "import_should_ignore_building_coordinates")
+        row.prop(bim_properties, 'import_should_ignore_site_coordinates')
         row = layout.row()
-        row.prop(bim_properties, "import_should_treat_styled_item_as_material")
+        row.prop(bim_properties, 'import_should_ignore_building_coordinates')
+        row = layout.row()
+        row.prop(bim_properties, 'import_should_treat_styled_item_as_material')