You can now configure the distance limit for false origin offsets

src/blenderbim/blenderbim/bim/import_ifc.py

@@ -270,7 +270,9 @@ class IfcImporter:
 
     def is_point_far_away(self, point, is_meters=True):
         # Locations greater than 1km are not considered "small sites" according to the georeferencing guide
-        limit = 1000 if is_meters else (1000 / self.unit_scale)
+        # Users can configure this if they have to handle larger sites but beware of surveying precision
+        limit = self.ifc_import_settings.distance_limit
+        limit = limit if is_meters else (limit / self.unit_scale)
         coords = point
         if hasattr(point, "Coordinates"):
             coords = point.Coordinates
@@ -392,7 +394,7 @@ class IfcImporter:
         props = bpy.context.scene.BIMGeoreferenceProperties
         if props.has_blender_offset:
             return
-        if self.ifc_import_settings.should_offset_model:
+        if self.ifc_import_settings.false_origin:
             return self.set_manual_blender_offset()
         if self.file.schema == "IFC2X3":
             project = self.file.by_type("IfcProject")[0]
@@ -408,9 +410,9 @@ class IfcImporter:
 
     def set_manual_blender_offset(self):
         props = bpy.context.scene.BIMGeoreferenceProperties
-        props.blender_eastings = str(self.ifc_import_settings.model_offset_coordinates[0])
+        props.blender_eastings = str(self.ifc_import_settings.false_origin[0])
-        props.blender_northings = str(self.ifc_import_settings.model_offset_coordinates[1])
+        props.blender_northings = str(self.ifc_import_settings.false_origin[1])
-        props.blender_orthogonal_height = str(self.ifc_import_settings.model_offset_coordinates[2])
+        props.blender_orthogonal_height = str(self.ifc_import_settings.false_origin[2])
         props.has_blender_offset = True
 
     def guess_georeferencing(self, element):
@@ -1868,8 +1870,8 @@ class IfcImportSettings:
         self.should_clean_mesh = True
         self.deflection_tolerance = 0.001
         self.angular_tolerance = 0.5
-        self.should_offset_model = False
+        self.distance_limit = 1000
-        self.model_offset_coordinates = (0, 0, 0)
+        self.false_origin = None
         self.has_filter = None
         self.should_filter_spatial_elements = True
         self.elements = set()
@@ -1893,10 +1895,12 @@ class IfcImportSettings:
         settings.should_clean_mesh = props.should_clean_mesh
         settings.deflection_tolerance = props.deflection_tolerance
         settings.angular_tolerance = props.angular_tolerance
-        settings.should_offset_model = props.should_offset_model
+        settings.distance_limit = props.distance_limit
-        settings.model_offset_coordinates = (
+        settings.false_origin = (
-            [float(o) for o in props.model_offset_coordinates.split(",")]
+            [float(o) for o in props.false_origin.split(",")]
-            if props.model_offset_coordinates
+            if props.false_origin
-            else (0, 0, 0)
+            else None
         )
+        if settings.false_origin == [0, 0, 0]:
+            settings.false_origin = None
         return settings

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

@@ -132,10 +132,10 @@ class BIMProjectProperties(PropertyGroup):
     should_merge_by_material: BoolProperty(name="Import and Merge by Material", default=False)
     should_merge_materials_by_colour: BoolProperty(name="Import and Merge Materials by Colour", default=False)
     should_clean_mesh: BoolProperty(name="Import and Clean Mesh", default=True)
-    deflection_tolerance: FloatProperty(name="Import Deflection Tolerance", default=0.001)
+    deflection_tolerance: FloatProperty(name="Deflection Tolerance", default=0.001)
-    angular_tolerance: FloatProperty(name="Import Angular Tolerance", default=0.5)
+    angular_tolerance: FloatProperty(name="Angular Tolerance", default=0.5)
-    should_offset_model: BoolProperty(name="Import and Offset Model", default=False)
+    distance_limit: FloatProperty(name="Distance Limit", default=1000)
-    model_offset_coordinates: StringProperty(name="Model Offset Coordinates", default="0,0,0")
+    false_origin: StringProperty(name="False Origin", default="0,0,0")
     links: CollectionProperty(name="Links", type=Link)
     active_link_index: IntProperty(name="Active Link Index")
     export_schema: EnumProperty(items=get_export_schema, name="IFC Schema")

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

@@ -82,9 +82,9 @@ class BIM_PT_project(Panel):
         row = self.layout.row()
         row.prop(pprops, "angular_tolerance")
         row = self.layout.row()
-        row.prop(pprops, "should_offset_model")
+        row.prop(pprops, "distance_limit")
         row = self.layout.row()
-        row.prop(pprops, "model_offset_coordinates")
+        row.prop(pprops, "false_origin")
 
         row = self.layout.row(align=True)
         row.operator("bim.load_project_elements")

src/blenderbim/test/bim/feature/project.feature

@@ -269,16 +269,14 @@ Scenario: Load project elements - load with the spatial decomposition collection
 Scenario: Load project elements - manual offset of object placements
     Given an empty Blender session
     And I press "bim.load_project(filepath='{cwd}/test/files/manual-geolocation.ifc', is_advanced=True)"
-    When I set "scene.BIMProjectProperties.should_offset_model" to "True"
+    When I set "scene.BIMProjectProperties.false_origin" to "268388500, 5774506000, 21900"
-    And I set "scene.BIMProjectProperties.model_offset_coordinates" to "268388500, 5774506000, 21900"
     And I press "bim.load_project_elements"
     Then the object "IfcPlate/1780 x 270 PRECAST WALL" is at "0,0,0"
 
 Scenario: Load project elements - manual offset of cartesian points
     Given an empty Blender session
     And I press "bim.load_project(filepath='{cwd}/test/files/manual-geolocation-coords.ifc', is_advanced=True)"
-    When I set "scene.BIMProjectProperties.should_offset_model" to "True"
+    When I set "scene.BIMProjectProperties.false_origin" to "1990711,5971553,22700"
-    And I set "scene.BIMProjectProperties.model_offset_coordinates" to "1990711,5971553,22700"
     And I press "bim.load_project_elements"
     Then the object "IfcBuildingElementProxy/NAME" is at "0,0,0"