convert-back-units test #5864

2026-08-09 17:31:45 +00:00 · 2024-12-10 15:59:49 +05:00
parent 9cd4ff9de4
commit 1e0ca1d891
1 changed files with 84 additions and 0 deletions
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+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2021 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 numpy as np
+import ifcopenshell
+import ifcopenshell.api.geometry
+import ifcopenshell.api.profile
+import ifcopenshell.api.root
+import ifcopenshell.geom
+import ifcopenshell.geom
+import ifcopenshell.util.unit
+import test.bootstrap
+from ifcopenshell.util.shape_builder import ShapeBuilder
+
+
+class TestSettings(test.bootstrap.IFC4):
+    def test_convert_back_units(self):
+        settings = ifcopenshell.geom.settings()
+        settings.set("convert-back-units", True)
+
+        ifc_file = ifcopenshell.file()
+        builder = ShapeBuilder(ifc_file)
+
+        ifcopenshell.api.root.create_entity(ifc_file, "IfcProject")
+        unit = ifcopenshell.api.run("unit.add_si_unit", ifc_file, unit_type="LENGTHUNIT", prefix="MILLI")
+        ifcopenshell.api.run("unit.assign_unit", ifc_file, units=[unit])
+        model = ifcopenshell.api.run("context.add_context", ifc_file, context_type="Model")
+
+        # Placement.
+        element = ifcopenshell.api.root.create_entity(ifc_file, "IfcWall")
+        matrix = np.eye(4)
+        matrix[0, 3] = 10
+        placement = ifcopenshell.api.geometry.edit_object_placement(ifc_file, element, matrix)
+        transform = ifcopenshell.geom.create_shape(settings, placement)
+        assert transform.matrix == (1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 10000.0, 0.0, 0.0, 1.0)
+
+        # Profile.
+        profile = ifcopenshell.api.profile.add_parameterized_profile(ifc_file, "IfcRectangleProfileDef")
+        ifcopenshell.api.profile.edit_profile(ifc_file, profile, {"XDim": 100, "YDim": 100})
+        shape = ifcopenshell.geom.create_shape(settings, profile)
+        assert shape.verts == (-50.0, -50.0, 0.0, 50.0, -50.0, 0.0, 50.0, 50.0, 0.0, -50.0, 50.0, 0.0)
+
+        # Representation item.
+        extrusion = builder.extrude(profile, 1000)
+        shape = ifcopenshell.geom.create_shape(settings, extrusion)
+        # fmt: off
+        extrusion_verts = (
+            -50.0, -50.0, 0.0, -50.0, -50.0, 1000.0, 50.0, -50.0, 1000.0, 50.0, -50.0, 0.0,
+            50.0, 50.0, 1000.0, 50.0, 50.0, 0.0, -50.0, 50.0, 1000.0, -50.0, 50.0, 0.0
+        )
+        # fmt: on
+        assert shape.verts == extrusion_verts
+
+        # Representation.
+        representation = builder.get_representation(model, [extrusion])
+        shape = ifcopenshell.geom.create_shape(settings, representation)
+        assert shape.verts == extrusion_verts
+
+        # Element.
+        ifcopenshell.api.geometry.assign_representation(ifc_file, element, representation)
+        shape = ifcopenshell.geom.create_shape(settings, element)
+        assert shape.geometry.verts == extrusion_verts
+
+        # Element with disabled conversion.
+        settings.set("convert-back-units", False)
+        shape = ifcopenshell.geom.create_shape(settings, element)
+        si_conversion = ifcopenshell.util.unit.calculate_unit_scale(ifc_file)
+        converted_verts = np.array(extrusion_verts) * si_conversion
+        assert np.allclose(shape.geometry.verts, converted_verts)