MergeProject - support merging projects with different units

2026-08-18 03:19:53 +00:00 · 2024-04-24 11:28:49 +05:00
parent 1c729a74d1
commit 606a0b46f2
2 changed files with 85 additions and 0 deletions
@@ -0,0 +1,66 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2022 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of IfcOpenShell.
+#
+# IfcOpenShell is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcOpenShell 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 Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
+
+import ifcpatch
+import ifcopenshell
+import ifcopenshell.api
+import ifcopenshell.util.placement
+import test.bootstrap
+import tempfile
+import numpy as np
+from pathlib import Path
+from typing import Optional
+
+
+class TestMergeProject(test.bootstrap.IFC4):
+    def setup_project(self, ifc_file: Optional[ifcopenshell.file] = None):
+        prefix = None if ifc_file else "MILLI"
+        if ifc_file is None:
+            ifc_file = ifcopenshell.file(schema=self.file.schema)
+
+        project = ifcopenshell.api.run("root.create_entity", ifc_file, ifc_class="IfcProject")
+        unit = ifcopenshell.api.run("unit.add_si_unit", ifc_file, unit_type="LENGTHUNIT", prefix=prefix)
+        ifcopenshell.api.run("unit.assign_unit", ifc_file, units=[unit])
+
+        matrix = np.eye(4)
+        matrix[:, 3] = (1, 2, 3, 1)
+        wall = ifcopenshell.api.run("root.create_entity", ifc_file, ifc_class="IfcWall")
+        ifcopenshell.api.run("geometry.edit_object_placement", ifc_file, product=wall, matrix=matrix, is_si=True)
+        return ifc_file
+
+    def test_run(self):
+        self.file = self.setup_project(self.file)
+        second_file = self.setup_project()
+        temp_path = Path(tempfile.gettempdir()) / "second.ifc"
+        second_file.write(temp_path)
+        output = ifcpatch.execute({"file": self.file, "recipe": "MergeProject", "arguments": [str(temp_path)]})
+
+        assert len(output.by_type("IfcWall")) == 2
+        wall1, wall2 = output.by_type("IfcWall")
+
+        # test that units are converted
+        placement1 = ifcopenshell.util.placement.get_local_placement(wall1.ObjectPlacement)
+        placement2 = ifcopenshell.util.placement.get_local_placement(wall2.ObjectPlacement)
+        to_tuple = lambda arr: tuple(map(tuple, arr))
+        matrix = np.eye(4)
+        matrix[:, 3] = (1, 2, 3, 1)
+        assert to_tuple(placement1) == to_tuple(placement2) == to_tuple(matrix)
+
+
+class TestMergeProjectIFC2X3(test.bootstrap.IFC2X3, TestMergeProject):
+    pass