More tests and fixes for linking in models with different project norths

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

@@ -1112,7 +1112,7 @@ except Exception as e:
             data = json.load(f)
 
         gprops = bpy.context.scene.BIMGeoreferenceProperties
-        for prop in ("model_origin", "blender_x_axis_abscissa", "blender_x_axis_ordinate"):
+        for prop in ("model_origin", "model_project_north"):
             if (value := data.get(prop, None)) is not None:
                 setattr(gprops, prop, value)
 

src/blenderbim/blenderbim/tool/loader.py

@@ -564,9 +564,12 @@ class Loader(blenderbim.core.tool.Loader):
 
     @classmethod
     def set_manual_blender_offset(cls, ifc_file: ifcopenshell.file) -> None:
-        model_origin = np.array(ifcopenshell.util.geolocation.auto_xyz2enh(ifc_file, 0, 0, 0))
         false_origin = np.array(cls.settings.false_origin)
-        model_offset = false_origin - model_origin
+        model_offset = np.array(
+            ifcopenshell.util.geolocation.auto_enh2xyz(
+                ifc_file, *cls.settings.false_origin, is_specified_in_map_units=False
+            )
+        )
         zero_origin = np.array((0, 0, 0))
         has_offset = not np.allclose(model_offset, zero_origin)
 
@@ -582,7 +585,7 @@ class Loader(blenderbim.core.tool.Loader):
         if not has_offset:
             model_offset = false_origin = (0, 0, 0)
 
-        if not has_rotation:
+        if np.isclose(project_north, 0):
             project_north = 0
 
         if has_offset or has_rotation:
@@ -676,6 +679,8 @@ class Loader(blenderbim.core.tool.Loader):
         if offset_point is None:
             return
         cls.settings.false_origin = ifcopenshell.util.geolocation.auto_xyz2enh(ifc_file, *offset_point)
+        if angle := ifcopenshell.util.geolocation.get_grid_north(ifc_file):
+            cls.settings.project_north = angle
         cls.set_manual_blender_offset(ifc_file)
 
     @classmethod
@@ -742,7 +747,5 @@ class Loader(blenderbim.core.tool.Loader):
             )
             gprops.model_project_north = gprops.blender_project_north
         else:
-            gprops.model_origin = ",".join(
-                map(str, ifcopenshell.util.geolocation.auto_xyz2enh(ifc_file, 0, 0, 0))
-            )
+            gprops.model_origin = ",".join(map(str, ifcopenshell.util.geolocation.auto_xyz2enh(ifc_file, 0, 0, 0)))
             gprops.model_project_north = str(ifcopenshell.util.geolocation.get_grid_north(ifc_file))

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

@@ -454,10 +454,10 @@ Scenario: Load project elements - all georeferencing coordinate situations with
 Scenario: Load project elements - all georeferencing coordinate situations with an offset site - manual false origin mode
     Given an empty Blender session
     And I press "bim.load_project(filepath='{cwd}/test/files/geolocation-offsetsite.ifc', is_advanced=True)"
-    When I set "scene.BIMProjectProperties.false_origin_mode" to "MANUAL"
-    When I set "scene.BIMProjectProperties.false_origin" to "0,10000,0"
-    When I set "scene.BIMProjectProperties.distance_limit" to "5"
-    And I press "bim.load_project_elements"
+    And I set "scene.BIMProjectProperties.false_origin_mode" to "MANUAL"
+    And I set "scene.BIMProjectProperties.false_origin" to "0,10000,0"
+    And I set "scene.BIMProjectProperties.distance_limit" to "5"
+    When I press "bim.load_project_elements"
     Then "scene.BIMGeoreferenceProperties.has_blender_offset" is "True"
     And "scene.BIMGeoreferenceProperties.blender_eastings" is "0.0"
     And "scene.BIMGeoreferenceProperties.blender_northings" is "10000.0"
@@ -489,6 +489,36 @@ Scenario: Load project elements - all georeferencing coordinate situations with
     And the object "IfcActuator/J" has a vertex at "10.366,3.813,-1"
     And the object "IfcActuator/J" has a vertex at "12.298,4.331,-1"
 
+Scenario: Load project elements - all georeferencing coordinate situations with an offset site - manual false origin mode - with custom project north
+    Given an empty Blender session
+    And I press "bim.load_project(filepath='{cwd}/test/files/geolocation-offsetsite.ifc', is_advanced=True)"
+    And I set "scene.BIMProjectProperties.false_origin_mode" to "MANUAL"
+    And I set "scene.BIMProjectProperties.false_origin" to "0,10000,0"
+    And I set "scene.BIMProjectProperties.project_north" to "-15"
+    And I set "scene.BIMProjectProperties.distance_limit" to "5"
+    When I press "bim.load_project_elements"
+    Then "scene.BIMGeoreferenceProperties.has_blender_offset" is "True"
+    And "scene.BIMGeoreferenceProperties.blender_eastings" is "0.0"
+    And "scene.BIMGeoreferenceProperties.blender_northings" is "10000.0"
+    And "scene.BIMGeoreferenceProperties.blender_orthogonal_height" is "0.0"
+    And "scene.BIMGeoreferenceProperties.blender_offset_x" is "0.0"
+    And "scene.BIMGeoreferenceProperties.blender_offset_y" is "10000.0"
+    And "scene.BIMGeoreferenceProperties.blender_offset_z" is "0.0"
+    And the object "IfcSite/My Site" is at "0,0,0"
+    And the object "IfcBuilding/My Building" is at "0,0,0"
+    And the object "IfcBuildingStorey/My Storey" is at "0,0,0"
+    And the object "IfcActuator/A" is at "7,3,0"
+    And the object "IfcActuator/B" is at "6,1,0"
+    And the object "IfcActuator/C" is at "0,0,0"
+    And the object "IfcActuator/D" is at "13,4,-1"
+    And the object "IfcActuator/E" is at "6,3,0"
+    And the object "IfcActuator/F" is at "3,3,0"
+    And the object "IfcActuator/G" is at "15,6,-1"
+    And the object "IfcActuator/H" is at "9,2,0"
+    And the object "IfcActuator/I" is at "3,3,0"
+    And the object "IfcActuator/J" is at "11,3,-1"
+    And the object "IfcActuator/K" is at "10,0,0"
+
 Scenario: Load project elements - all georeferencing coordinate situations with a map conversion - disabled false origin mode (this should be identical to the situation with no map conversion)
     Given an empty Blender session
     And I press "bim.load_project(filepath='{cwd}/test/files/geolocation-mapconversion.ifc', is_advanced=True)"
@@ -718,6 +748,39 @@ Scenario: Link IFC - manual false origin mode
     And the object "Chunk" has a vertex at "-1,-1,-1"
     And the object "Chunk" has a vertex at "7,4,-1"
 
+Scenario: Link IFC - automatic false origin mode - two different false origins and project norths - grid north is up because we start with geolocation.ifc
+    Given an empty Blender session
+    # Not currently possible via UI
+    And I set "scene.BIMProjectProperties.distance_limit" to "5"
+    And I set "scene.BIMProjectProperties.false_origin_mode" to "AUTOMATIC"
+    When I press "bim.link_ifc(filepath='{cwd}/test/files/geolocation.ifc', use_cache=False)"
+    And I press "bim.link_ifc(filepath='{cwd}/test/files/geolocation-mapconversion-angle.ifc', use_cache=False)"
+    Then the object "Col:IfcProject/geolocation.ifc:Chunk" exists
+    And the object "Col:IfcProject/geolocation-mapconversion-angle.ifc:Chunk" exists
+    And the object "Col:IfcProject/geolocation.ifc:Chunk" has a vertex at "-11,-2,0"
+    And the object "Col:IfcProject/geolocation.ifc:Chunk" has a vertex at "-4,-5,0"
+    And the object "Col:IfcProject/geolocation.ifc:Chunk" has a vertex at "4,0,0"
+    And the object "Col:IfcProject/geolocation-mapconversion-angle.ifc:Chunk" has a vertex at "4.732,-3.268,0"
+    And the object "Col:IfcProject/geolocation-mapconversion-angle.ifc:Chunk" has a vertex at "9.294,-9.366,0"
+    And the object "Col:IfcProject/geolocation-mapconversion-angle.ifc:Chunk" has a vertex at "18.722,-9.036,0"
+
+Scenario: Link IFC - automatic false origin mode - two different false origins and project norths - project north is up because we start with geolocation-mapconversion-angle.ifc
+    Given an empty Blender session
+    # Not currently possible via UI
+    And I set "scene.BIMProjectProperties.distance_limit" to "5"
+    And I set "scene.BIMProjectProperties.false_origin_mode" to "AUTOMATIC"
+    When I press "bim.link_ifc(filepath='{cwd}/test/files/geolocation-mapconversion-angle.ifc', use_cache=False)"
+    And I press "bim.link_ifc(filepath='{cwd}/test/files/geolocation.ifc', use_cache=False)"
+    Then the object "Col:IfcProject/geolocation.ifc:Chunk" exists
+    And the object "Col:IfcProject/geolocation-mapconversion-angle.ifc:Chunk" exists
+    And the object "Col:IfcProject/geolocation-mapconversion-angle.ifc:Chunk" has a vertex at "-11,-2,0"
+    And the object "Col:IfcProject/geolocation-mapconversion-angle.ifc:Chunk" has a vertex at "-4,-5,0"
+    And the object "Col:IfcProject/geolocation-mapconversion-angle.ifc:Chunk" has a vertex at "4,0,0"
+    And the object "Col:IfcProject/geolocation.ifc:Chunk" has a vertex at "-25.258,-8.768,0"
+    And the object "Col:IfcProject/geolocation.ifc:Chunk" has a vertex at "-17.696,-7.866,0"
+    And the object "Col:IfcProject/geolocation.ifc:Chunk" has a vertex at "-13.268,0.464,0"
+
+
 Scenario: Toggle link visibility - wireframe mode
     Given an empty IFC project
     And I press "bim.link_ifc(filepath='{cwd}/test/files/basic.ifc')"

src/blenderbim/test/bim/test_feature.py

@@ -373,7 +373,12 @@ def nothing_happens():
 
 @then(parsers.parse('the object "{name}" exists'))
 def the_object_name_exists(name: str) -> bpy.types.Object:
-    obj = bpy.data.objects.get(name)
+    # Some objects from linked collections may share the same name. This disambiguates them.
+    if name.startswith("Col:"):
+        _, collection_name, name = name.split(":")
+        obj = bpy.data.collections.get(collection_name).objects.get(name)
+    else:
+        obj = bpy.data.objects.get(name)
     if not obj:
         assert False, f'The object "{name}" does not exist'
     return obj