WIP implement blender offsets for non-geolocated files. Also deprecate a whole bunch of geolocation vendor workarounds into a standard feature. See #1222.

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

@@ -20,15 +20,43 @@ class EditObjectPlacement(bpy.types.Operator):
     def execute(self, context):
         obj = bpy.data.objects.get(self.obj) if self.obj else bpy.context.active_object
         self.file = IfcStore.get_file()
+        # TODO: determine how to deal with this module dependency
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        matrix = np.array(obj.matrix_world)
+        if props.has_blender_offset and props.blender_offset_type == "OBJECT_PLACEMENT":
+            self.calculate_unit_scale()
+            # TODO: np.array? Why not matrix?
+            matrix = np.array(
+                ifcopenshell.util.geolocation.local2global(
+                    np.matrix(obj.matrix_world),
+                    float(props.blender_eastings) * self.unit_scale,
+                    float(props.blender_northings) * self.unit_scale,
+                    float(props.blender_orthogonal_height) * self.unit_scale,
+                    float(props.blender_x_axis_abscissa),
+                    float(props.blender_x_axis_ordinate),
+                )
+            )
         edit_object_placement.Usecase(
             self.file,
             {
                 "product": self.file.by_id(obj.BIMObjectProperties.ifc_definition_id),
-                "matrix": np.array(obj.matrix_world),
+                "matrix": matrix,
             },
         ).execute()
         return {"FINISHED"}
 
+    def calculate_unit_scale(self):
+        self.unit_scale = 1
+        units = self.file.by_type("IfcUnitAssignment")[0]
+        for unit in units.Units:
+            if not hasattr(unit, "UnitType") or unit.UnitType != "LENGTHUNIT":
+                continue
+            while unit.is_a("IfcConversionBasedUnit"):
+                self.unit_scale *= unit.ConversionFactor.ValueComponent.wrappedValue
+                unit = unit.ConversionFactor.UnitComponent
+            if unit.is_a("IfcSIUnit"):
+                self.unit_scale *= ifcopenshell.util.unit.get_prefix_multiplier(unit.Prefix)
+
 
 class AddRepresentation(bpy.types.Operator):
     bl_idname = "bim.add_representation"
@@ -67,7 +95,8 @@ class AddRepresentation(bpy.types.Operator):
                 },
             ).execute()
             assign_representation.Usecase(
-                self.file, {"product": self.file.by_id(obj.BIMObjectProperties.ifc_definition_id), "representation": result}
+                self.file,
+                {"product": self.file.by_id(obj.BIMObjectProperties.ifc_definition_id), "representation": result},
             ).execute()
 
             existing_mesh = obj.data

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

@@ -208,7 +208,7 @@ class ConvertLocalToGlobal(bpy.types.Operator):
             Data.map_conversion["Northings"],
             Data.map_conversion["OrthogonalHeight"],
             Data.map_conversion.get("XAxisAbscissa", 1.0),
-            Data.map_conversion.get("XAxisAbscissa", 0.0),
+            Data.map_conversion.get("XAxisOrdinate", 0.0),
             Data.map_conversion.get("Scale", 1.0),
         )
         props.coordinate_output = ",".join([str(r) for r in results])
@@ -233,7 +233,7 @@ class ConvertGlobalToLocal(bpy.types.Operator):
             Data.map_conversion["Northings"],
             Data.map_conversion["OrthogonalHeight"],
             Data.map_conversion.get("XAxisAbscissa", 1.0),
-            Data.map_conversion.get("XAxisAbscissa", 0.0),
+            Data.map_conversion.get("XAxisOrdinate", 0.0),
             Data.map_conversion.get("Scale", 1.0),
         )
         props.coordinate_output = ",".join([str(r) for r in results])

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

@@ -35,3 +35,14 @@ class BIMGeoreferenceProperties(PropertyGroup):
     is_map_unit_null: BoolProperty(name="Is Map Unit Null")
     coordinate_input: StringProperty(name="Coordinate Input")
     coordinate_output: StringProperty(name="Coordinate Output")
+    has_blender_offset: BoolProperty(name="Has Blender Offset")
+    blender_offset_type: EnumProperty(
+        items=[(o, o, "") for o in ["OBJECT_PLACEMENT", "CARTESIAN_POINT"]],
+        name="Blender Offset",
+        default="OBJECT_PLACEMENT",
+    )
+    blender_eastings: StringProperty(name="Blender Eastings", default="0")
+    blender_northings: StringProperty(name="Blender Northings", default="0")
+    blender_orthogonal_height: StringProperty(name="Blender Orthogonal Height", default="0")
+    blender_x_axis_abscissa: StringProperty(name="Blender X Axis Abscissa", default="1")
+    blender_x_axis_ordinate: StringProperty(name="Blender X Axis Ordinate", default="0")

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

@@ -21,7 +21,7 @@ class BIM_PT_gis(Panel):
 
         if props.is_editing:
             return self.draw_editable_ui(context)
-        self.draw_ui()
+        self.draw_ui(context)
 
     def draw_editable_ui(self, context):
         props = context.scene.BIMGeoreferenceProperties
@@ -70,12 +70,40 @@ class BIM_PT_gis(Panel):
             row.prop(props, "map_unit_imperial", text="")
         row.prop(props, "is_map_unit_null", icon="RADIOBUT_OFF" if props.is_map_unit_null else "RADIOBUT_ON", text="")
 
-    def draw_ui(self):
-        if not Data.map_conversion:
+    def draw_ui(self, context):
+        props = context.scene.BIMGeoreferenceProperties
+
+        if not Data.map_conversion and IfcStore.get_file().schema != "IFC2X3":
             row = self.layout.row(align=True)
             row.label(text="Not Georeferenced")
             row.operator("bim.add_georeferencing", icon="ADD", text="")
 
+        if props.has_blender_offset:
+            row = self.layout.row()
+            row.label(text="Blender Offset", icon="TRACKING_REFINE_FORWARDS")
+
+            row = self.layout.row(align=True)
+            row.label(text="Type")
+            row.label(text=props.blender_offset_type)
+            row = self.layout.row(align=True)
+            row.label(text="Eastings")
+            row.label(text=props.blender_eastings)
+            row = self.layout.row(align=True)
+            row.label(text="Northings")
+            row.label(text=props.blender_northings)
+            row = self.layout.row(align=True)
+            row.label(text="OrthogonalHeight")
+            row.label(text=props.blender_orthogonal_height)
+            row = self.layout.row(align=True)
+            row.label(text="XAxisAbscissa")
+            row.label(text=props.blender_x_axis_abscissa)
+            row = self.layout.row(align=True)
+            row.label(text="XAxisOrdinate")
+            row.label(text=props.blender_x_axis_ordinate)
+        elif IfcStore.get_file().schema == "IFC2X3":
+            row = self.layout.row()
+            row.label(text="Not Georeferenced")
+
         if Data.map_conversion:
             row = self.layout.row(align=True)
             row.label(text="Map Conversion", icon="GRID")