Code review and tests for georeferencing module refactor

src/blenderbim/test/bim/feature/georeference.feature

@@ -0,0 +1,82 @@
+@georeference
+Feature: Georeference
+
+Scenario: Add georeferencing
+    Given an empty IFC project
+    When I press "bim.add_georeferencing"
+    Then nothing happens
+
+Scenario: Enable editing georeferencing
+    Given an empty IFC project
+    And I press "bim.add_georeferencing"
+    When I press "bim.enable_editing_georeferencing"
+    Then nothing happens
+
+Scenario: Remove georeferencing
+    Given an empty IFC project
+    And I press "bim.add_georeferencing"
+    When I press "bim.remove_georeferencing"
+    Then nothing happens
+
+Scenario: Edit georeferencing
+    Given an empty IFC project
+    And I press "bim.add_georeferencing"
+    And I press "bim.enable_editing_georeferencing"
+    When I press "bim.edit_georeferencing"
+    Then nothing happens
+
+Scenario: Disable editing georeferencing
+    Given an empty IFC project
+    And I press "bim.add_georeferencing"
+    And I press "bim.enable_editing_georeferencing"
+    When I press "bim.disable_editing_georeferencing"
+    Then nothing happens
+
+Scenario: Set IFC grid north
+    Given an empty IFC project
+    And I press "bim.add_georeferencing"
+    And I press "bim.enable_editing_georeferencing"
+    When I press "bim.set_ifc_grid_north"
+    Then nothing happens
+
+Scenario: Set Blender grid north
+    Given an empty IFC project
+    And I press "bim.add_georeferencing"
+    And I press "bim.enable_editing_georeferencing"
+    And I press "bim.set_ifc_grid_north"
+    When I press "bim.set_blender_grid_north"
+    Then nothing happens
+
+Scenario: Get cursor location
+    Given an empty IFC project
+    When I press "bim.get_cursor_location"
+    Then nothing happens
+
+Scenario: Set cursor location
+    Given an empty IFC project
+    When I set "scene.BIMGeoreferenceProperties.coordinate_output" to "0,0,0"
+    And I press "bim.set_cursor_location"
+    Then nothing happens
+
+Scenario: Set IFC true north
+    Given an empty IFC project
+    When I press "bim.set_ifc_true_north"
+    Then nothing happens
+
+Scenario: Set Blender true north
+    Given an empty IFC project
+    And I press "bim.set_ifc_true_north"
+    When I press "bim.set_blender_true_north"
+    Then nothing happens
+
+Scenario: Convert local to global
+    Given an empty IFC project
+    When I set "scene.BIMGeoreferenceProperties.coordinate_input" to "0,0,0"
+    And I press "bim.convert_local_to_global"
+    Then "scene.BIMGeoreferenceProperties.coordinate_output" is "0.0,0.0,0.0"
+
+Scenario: Convert global to local
+    Given an empty IFC project
+    When I set "scene.BIMGeoreferenceProperties.coordinate_input" to "0,0,0"
+    And I press "bim.convert_global_to_local"
+    Then "scene.BIMGeoreferenceProperties.coordinate_output" is "0.0,0.0,0.0"

src/blenderbim/test/core/bootstrap.py

@@ -98,6 +98,13 @@ def geometry():
     prophet.verify()
 
 
+@pytest.fixture
+def georeference():
+    prophet = Prophecy(blenderbim.core.tool.Georeference)
+    yield prophet
+    prophet.verify()
+
+
 @pytest.fixture
 def library():
     prophet = Prophecy(blenderbim.core.tool.Library)

src/blenderbim/test/core/test_georeference.py

@@ -0,0 +1,114 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 2022 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of BlenderBIM Add-on.
+#
+# BlenderBIM Add-on is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# BlenderBIM Add-on is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
+
+import blenderbim.core.georeference as subject
+from test.core.bootstrap import ifc, georeference
+
+
+class TestAddGeoreferencing:
+    def test_run(self, ifc):
+        ifc.run("georeference.add_georeferencing").should_be_called()
+        subject.add_georeferencing(ifc)
+
+
+class TestEnableGeoreferencing:
+    def test_run(self, georeference):
+        georeference.import_projected_crs().should_be_called()
+        georeference.import_map_conversion().should_be_called()
+        georeference.import_true_north().should_be_called()
+        georeference.enable_editing().should_be_called()
+        subject.enable_editing_georeferencing(georeference)
+
+
+class TestRemoveGeoreferencing:
+    def test_run(self, ifc):
+        ifc.run("georeference.remove_georeferencing").should_be_called()
+        subject.remove_georeferencing(ifc)
+
+
+class TestEditGeoreferencing:
+    def test_run(self, ifc, georeference):
+        georeference.get_projected_crs_attributes().should_be_called().will_return("projected_crs_attributes")
+        georeference.get_map_conversion_attributes().should_be_called().will_return("map_conversion_attributes")
+        georeference.get_true_north_attributes().should_be_called().will_return("true_north_attributes")
+        ifc.run(
+            "georeference.edit_georeferencing",
+            projected_crs="projected_crs_attributes",
+            map_conversion="map_conversion_attributes",
+            true_north="true_north_attributes",
+        ).should_be_called()
+        georeference.disable_editing().should_be_called()
+        subject.edit_georeferencing(ifc, georeference)
+
+
+class TestSetIfcGridNorth:
+    def test_run(self, georeference):
+        georeference.set_ifc_grid_north().should_be_called()
+        subject.set_ifc_grid_north(georeference)
+
+
+class TestSetBlenderGridNorth:
+    def test_run(self, georeference):
+        georeference.set_blender_grid_north().should_be_called()
+        subject.set_blender_grid_north(georeference)
+
+
+class TestSetIfcTrueNorth:
+    def test_run(self, georeference):
+        georeference.set_ifc_true_north().should_be_called()
+        subject.set_ifc_true_north(georeference)
+
+
+class TestSetBlenderTrueNorth:
+    def test_run(self, georeference):
+        georeference.set_blender_true_north().should_be_called()
+        subject.set_blender_true_north(georeference)
+
+
+class TestGetCursorLocation:
+    def test_run(self, georeference):
+        georeference.get_cursor_location().should_be_called().will_return("coordinates")
+        georeference.set_coordinates("input", "coordinates").should_be_called()
+        subject.get_cursor_location(georeference)
+
+
+class TestSetCursorLocation:
+    def test_run(self, georeference):
+        georeference.get_coordinates("output").should_be_called().will_return("coordinates")
+        georeference.set_cursor_location("coordinates").should_be_called()
+        subject.set_cursor_location(georeference)
+
+
+class TestConvertLocalToGlobal:
+    def test_run(self, georeference):
+        georeference.get_coordinates("input").should_be_called().will_return("coordinates")
+        georeference.get_map_conversion().should_be_called().will_return("map_conversion")
+        georeference.xyz2enh("coordinates", "map_conversion").should_be_called().will_return("enh")
+        georeference.set_coordinates("output", "enh").should_be_called()
+        georeference.set_cursor_location("enh").should_be_called()
+        subject.convert_local_to_global(georeference)
+
+
+class TestConvertGlobalToLocal:
+    def test_run(self, georeference):
+        georeference.get_coordinates("input").should_be_called().will_return("coordinates")
+        georeference.get_map_conversion().should_be_called().will_return("map_conversion")
+        georeference.enh2xyz("coordinates", "map_conversion").should_be_called().will_return("xyz")
+        georeference.set_coordinates("output", "xyz").should_be_called()
+        georeference.set_cursor_location("xyz").should_be_called()
+        subject.convert_global_to_local(georeference)

src/blenderbim/test/tool/test_georeference.py

@@ -0,0 +1,357 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 2021 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of BlenderBIM Add-on.
+#
+# BlenderBIM Add-on is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# BlenderBIM Add-on is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
+
+import bpy
+import math
+import ifcopenshell
+import blenderbim.core.tool
+import blenderbim.tool as tool
+from mathutils import Vector
+from test.bim.bootstrap import NewFile
+from blenderbim.tool.georeference import Georeference as subject
+
+
+class TestImplementsTool(NewFile):
+    def test_run(self):
+        assert isinstance(subject(), blenderbim.core.tool.Georeference)
+
+
+class TestImportProjectedCRS(NewFile):
+    def test_importing_nothing_with_no_georeferencing(self):
+        ifc = ifcopenshell.file()
+        tool.Ifc.set(ifc)
+        ifcopenshell.api.run("root.create_entity", ifc, ifc_class="IfcProject")
+        ifcopenshell.api.run("context.add_context", ifc, context_type="Model")
+        subject.import_projected_crs()
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        assert len(props.projected_crs) == 0
+
+    def test_importing_projected_crs(self):
+        ifc = ifcopenshell.file()
+        tool.Ifc.set(ifc)
+        ifcopenshell.api.run("root.create_entity", ifc, ifc_class="IfcProject")
+        ifcopenshell.api.run("context.add_context", ifc, context_type="Model")
+        ifcopenshell.api.run("georeference.add_georeferencing", ifc)
+        projected_crs = ifc.by_type("IfcProjectedCRS")[0]
+        projected_crs.Name = "Name"
+        projected_crs.Description = "Description"
+        projected_crs.GeodeticDatum = "GeodeticDatum"
+        projected_crs.VerticalDatum = "VerticalDatum"
+        projected_crs.MapProjection = "MapProjection"
+        projected_crs.MapZone = "MapZone"
+        unit = ifcopenshell.api.run("unit.add_si_unit", ifc, unit_type="LENGTHUNIT", name="METRE")
+        projected_crs.MapUnit = unit
+        subject.import_projected_crs()
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        assert props.projected_crs.get("Name").string_value == "Name"
+        assert props.projected_crs.get("Description").string_value == "Description"
+        assert props.projected_crs.get("GeodeticDatum").string_value == "GeodeticDatum"
+        assert props.projected_crs.get("VerticalDatum").string_value == "VerticalDatum"
+        assert props.projected_crs.get("MapProjection").string_value == "MapProjection"
+        assert props.projected_crs.get("MapZone").string_value == "MapZone"
+        assert props.projected_crs.get("MapUnit").enum_value == str(unit.id())
+
+    def test_run_ifc2x3(self):
+        ifc = ifcopenshell.file(schema="IFC2X3")
+        tool.Ifc.set(ifc)
+        subject.import_projected_crs()
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        assert len(props.projected_crs) == 0
+
+
+class TestImportMapConversion(NewFile):
+    def test_importing_nothing_with_no_georeferencing(self):
+        ifc = ifcopenshell.file()
+        tool.Ifc.set(ifc)
+        ifcopenshell.api.run("root.create_entity", ifc, ifc_class="IfcProject")
+        ifcopenshell.api.run("context.add_context", ifc, context_type="Model")
+        subject.import_map_conversion()
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        assert len(props.map_conversion) == 0
+
+    def test_importing_map_conversion(self):
+        ifc = ifcopenshell.file()
+        tool.Ifc.set(ifc)
+        ifcopenshell.api.run("root.create_entity", ifc, ifc_class="IfcProject")
+        ifcopenshell.api.run("context.add_context", ifc, context_type="Model")
+        ifcopenshell.api.run("georeference.add_georeferencing", ifc)
+        map_conversion = ifc.by_type("IfcMapConversion")[0]
+        map_conversion.Eastings = 1
+        map_conversion.Northings = 2
+        map_conversion.OrthogonalHeight = 3
+        map_conversion.XAxisAbscissa = 4
+        map_conversion.XAxisOrdinate = 5
+        map_conversion.Scale = 6
+        subject.import_map_conversion()
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        assert props.map_conversion.get("Eastings").string_value == "1.0"
+        assert props.map_conversion.get("Northings").string_value == "2.0"
+        assert props.map_conversion.get("OrthogonalHeight").string_value == "3.0"
+        assert props.map_conversion.get("XAxisAbscissa").string_value == "4.0"
+        assert props.map_conversion.get("XAxisOrdinate").string_value == "5.0"
+        assert props.map_conversion.get("Scale").string_value == "6.0"
+
+    def test_run_ifc2x3(self):
+        ifc = ifcopenshell.file(schema="IFC2X3")
+        tool.Ifc.set(ifc)
+        subject.import_map_conversion()
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        assert len(props.map_conversion) == 0
+
+
+class TestImportTrueNorth(NewFile):
+    def test_detecting_no_true_north(self):
+        ifc = ifcopenshell.file()
+        tool.Ifc.set(ifc)
+        ifcopenshell.api.run("root.create_entity", ifc, ifc_class="IfcProject")
+        context = ifcopenshell.api.run("context.add_context", ifc, context_type="Model")
+        subject.import_true_north()
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        assert props.has_true_north is False
+
+    def test_run(self):
+        ifc = ifcopenshell.file()
+        tool.Ifc.set(ifc)
+        ifcopenshell.api.run("root.create_entity", ifc, ifc_class="IfcProject")
+        context = ifcopenshell.api.run("context.add_context", ifc, context_type="Model")
+        context.TrueNorth = ifc.createIfcDirection((1.0, 2.0, 0.0))
+        subject.import_true_north()
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        assert props.true_north_abscissa == "1.0"
+        assert props.true_north_ordinate == "2.0"
+        assert props.has_true_north is True
+
+
+class TestGetProjectedCRSAttributes(NewFile):
+    def test_run(self):
+        TestImportProjectedCRS().test_importing_projected_crs()
+        assert subject.get_projected_crs_attributes() == {
+            "Name": "Name",
+            "Description": "Description",
+            "GeodeticDatum": "GeodeticDatum",
+            "VerticalDatum": "VerticalDatum",
+            "MapProjection": "MapProjection",
+            "MapZone": "MapZone",
+            "MapUnit": tool.Ifc.get().by_type("IfcNamedUnit")[0],
+        }
+
+
+class TestGetMapConversionAttributes(NewFile):
+    def test_run(self):
+        TestImportMapConversion().test_importing_map_conversion()
+        assert subject.get_map_conversion_attributes() == {
+            "Eastings": 1.0,
+            "Northings": 2.0,
+            "OrthogonalHeight": 3.0,
+            "XAxisAbscissa": 4.0,
+            "XAxisOrdinate": 5.0,
+            "Scale": 6.0,
+        }
+
+class TestGetTrueNorthAttributes(NewFile):
+    def test_run(self):
+        TestImportTrueNorth().test_run()
+        assert subject.get_true_north_attributes() == [1.0, 2.0]
+
+
+class TestEnableEditing(NewFile):
+    def test_run(self):
+        bpy.context.scene.BIMGeoreferenceProperties.is_editing = False
+        subject.enable_editing()
+        assert bpy.context.scene.BIMGeoreferenceProperties.is_editing is True
+
+
+class TestDisableEditing(NewFile):
+    def test_run(self):
+        bpy.context.scene.BIMGeoreferenceProperties.is_editing = True
+        subject.disable_editing()
+        assert bpy.context.scene.BIMGeoreferenceProperties.is_editing is False
+
+
+class TestSetCoordinates(NewFile):
+    def test_run(self):
+        subject.set_coordinates("input", [1., 2., 3.])
+        assert bpy.context.scene.BIMGeoreferenceProperties.coordinate_input == "1.0,2.0,3.0"
+        subject.set_coordinates("output", [4., 5., 6.])
+        assert bpy.context.scene.BIMGeoreferenceProperties.coordinate_output == "4.0,5.0,6.0"
+
+
+class TestGetCoordinates(NewFile):
+    def test_run(self):
+        bpy.context.scene.BIMGeoreferenceProperties.coordinate_input = "1.0,2.0,3.0"
+        assert subject.get_coordinates("input") == [1., 2., 3.]
+        bpy.context.scene.BIMGeoreferenceProperties.coordinate_output = "4.0,5.0,6.0"
+        assert subject.get_coordinates("output") == [4., 5., 6.]
+
+
+class TestGetCursorLocation(NewFile):
+    def test_run(self):
+        ifc = ifcopenshell.file()
+        tool.Ifc.set(ifc)
+        ifcopenshell.api.run("root.create_entity", ifc, ifc_class="IfcProject")
+        ifcopenshell.api.run("context.add_context", ifc, context_type="Model")
+        unit = ifcopenshell.api.run("unit.add_si_unit", ifc, unit_type="LENGTHUNIT", prefix="MILLI", name="METRE")
+        ifcopenshell.api.run("unit.assign_unit", ifc, units=[unit])
+        bpy.context.scene.cursor.location = (1., 2., 3.)
+        assert subject.get_cursor_location() == [1000., 2000., 3000.]
+
+
+class TestSetCursorLocation(NewFile):
+    def test_run(self):
+        ifc = ifcopenshell.file()
+        tool.Ifc.set(ifc)
+        ifcopenshell.api.run("root.create_entity", ifc, ifc_class="IfcProject")
+        ifcopenshell.api.run("context.add_context", ifc, context_type="Model")
+        unit = ifcopenshell.api.run("unit.add_si_unit", ifc, unit_type="LENGTHUNIT", prefix="MILLI", name="METRE")
+        ifcopenshell.api.run("unit.assign_unit", ifc, units=[unit])
+        subject.set_cursor_location([1000., 2000., 3000.])
+        assert list(bpy.context.scene.cursor.location) == [1., 2., 3.]
+
+
+class TestSetIfcTrueNorth(NewFile):
+    def test_run(self):
+        subject.set_ifc_true_north()
+        assert round(float(bpy.context.scene.BIMGeoreferenceProperties.true_north_abscissa), 3) == 0.0
+        assert round(float(bpy.context.scene.BIMGeoreferenceProperties.true_north_ordinate), 3) == 1.0
+        bpy.context.scene.sun_pos_properties.north_offset = math.radians(45)
+        subject.set_ifc_true_north()
+        assert round(float(bpy.context.scene.BIMGeoreferenceProperties.true_north_abscissa), 3) == 0.707
+        assert round(float(bpy.context.scene.BIMGeoreferenceProperties.true_north_ordinate), 3) == 0.707
+
+
+class TestSetBlenderTrueNorth(NewFile):
+    def test_run(self):
+        bpy.context.scene.BIMGeoreferenceProperties.true_north_abscissa = "0.0"
+        bpy.context.scene.BIMGeoreferenceProperties.true_north_ordinate = "1.0"
+        subject.set_blender_true_north()
+        assert bpy.context.scene.sun_pos_properties.north_offset == 0
+        bpy.context.scene.BIMGeoreferenceProperties.true_north_abscissa = "0.707"
+        bpy.context.scene.BIMGeoreferenceProperties.true_north_ordinate = "0.707"
+        subject.set_blender_true_north()
+        assert round(math.degrees(bpy.context.scene.sun_pos_properties.north_offset)) == 45
+
+
+class TestGetMapConversion(NewFile):
+    def test_run(self):
+        ifc = ifcopenshell.file()
+        tool.Ifc.set(ifc)
+        ifcopenshell.api.run("root.create_entity", ifc, ifc_class="IfcProject")
+        ifcopenshell.api.run("context.add_context", ifc, context_type="Model")
+        ifcopenshell.api.run("georeference.add_georeferencing", ifc)
+        assert subject.get_map_conversion().is_a("IfcMapConversion")
+
+
+class TestXyz2Enh(NewFile):
+    def test_run(self):
+        assert subject.xyz2enh([0., 0., 0.], None) == [0., 0., 0.]
+
+    def test_using_the_blender_offset(self):
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        props.has_blender_offset = True
+        props.blender_eastings = "1.0"
+        assert subject.xyz2enh([0., 0., 0.], None) == (1., 0., 0.)
+
+    def test_using_the_map_conversion(self):
+        ifc = ifcopenshell.file()
+        tool.Ifc.set(ifc)
+        ifcopenshell.api.run("root.create_entity", ifc, ifc_class="IfcProject")
+        ifcopenshell.api.run("context.add_context", ifc, context_type="Model")
+        ifcopenshell.api.run("georeference.add_georeferencing", ifc)
+        map_conversion = ifc.by_type("IfcMapConversion")[0]
+        map_conversion.Eastings = 1.0
+        assert subject.xyz2enh([0., 0., 0.], map_conversion) == (1., 0., 0.)
+
+    def test_applying_both_blender_offset_and_map_conversion(self):
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        props.has_blender_offset = True
+        props.blender_eastings = "1.0"
+        ifc = ifcopenshell.file()
+        tool.Ifc.set(ifc)
+        ifcopenshell.api.run("root.create_entity", ifc, ifc_class="IfcProject")
+        ifcopenshell.api.run("context.add_context", ifc, context_type="Model")
+        ifcopenshell.api.run("georeference.add_georeferencing", ifc)
+        map_conversion = ifc.by_type("IfcMapConversion")[0]
+        map_conversion.Northings = 1.0
+        assert subject.xyz2enh([0., 0., 0.], map_conversion) == (1., 1., 0.)
+
+
+class TestEnh2Xyz(NewFile):
+    def test_run(self):
+        assert subject.enh2xyz([0., 0., 0.], None) == [0., 0., 0.]
+
+    def test_using_the_blender_offset(self):
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        props.has_blender_offset = True
+        props.blender_eastings = "1.0"
+        assert subject.enh2xyz([0., 0., 0.], None) == (-1., 0., 0.)
+
+    def test_using_the_map_conversion(self):
+        ifc = ifcopenshell.file()
+        tool.Ifc.set(ifc)
+        ifcopenshell.api.run("root.create_entity", ifc, ifc_class="IfcProject")
+        ifcopenshell.api.run("context.add_context", ifc, context_type="Model")
+        ifcopenshell.api.run("georeference.add_georeferencing", ifc)
+        map_conversion = ifc.by_type("IfcMapConversion")[0]
+        map_conversion.Eastings = 1.0
+        assert subject.enh2xyz([0., 0., 0.], map_conversion) == (-1., 0., 0.)
+
+    def test_applying_both_blender_offset_and_map_conversion(self):
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        props.has_blender_offset = True
+        props.blender_eastings = "1.0"
+        ifc = ifcopenshell.file()
+        tool.Ifc.set(ifc)
+        ifcopenshell.api.run("root.create_entity", ifc, ifc_class="IfcProject")
+        ifcopenshell.api.run("context.add_context", ifc, context_type="Model")
+        ifcopenshell.api.run("georeference.add_georeferencing", ifc)
+        map_conversion = ifc.by_type("IfcMapConversion")[0]
+        map_conversion.Northings = 1.0
+        assert subject.enh2xyz([0., 0., 0.], map_conversion) == (-1., -1., 0.)
+
+
+class TestSetIfcGridNorth(NewFile):
+    def test_run(self):
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        new = props.map_conversion.add()
+        new.name = "XAxisAbscissa"
+        new = props.map_conversion.add()
+        new.name = "XAxisOrdinate"
+        subject.set_ifc_grid_north()
+        assert round(float(props.map_conversion.get("XAxisAbscissa").string_value), 3) == 1.0
+        assert round(float(props.map_conversion.get("XAxisOrdinate").string_value), 3) == 0.0
+        bpy.context.scene.sun_pos_properties.north_offset = math.radians(45)
+        subject.set_ifc_grid_north()
+        assert round(float(props.map_conversion.get("XAxisAbscissa").string_value), 3) == 0.707
+        assert round(float(props.map_conversion.get("XAxisOrdinate").string_value), 3) == -0.707
+
+
+class TestSetBlenderGridNorth(NewFile):
+    def test_run(self):
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        new = props.map_conversion.add()
+        new.name = "XAxisAbscissa"
+        new = props.map_conversion.add()
+        new.name = "XAxisOrdinate"
+        props.map_conversion.get("XAxisAbscissa").string_value = "1.0"
+        props.map_conversion.get("XAxisOrdinate").string_value = "0.0"
+        subject.set_blender_grid_north()
+        assert bpy.context.scene.sun_pos_properties.north_offset == 0
+        props.map_conversion.get("XAxisAbscissa").string_value = "0.707"
+        props.map_conversion.get("XAxisOrdinate").string_value = "-0.707"
+        subject.set_blender_grid_north()
+        assert round(math.degrees(bpy.context.scene.sun_pos_properties.north_offset)) == 45