Alignments can now be created with or without geometric representations

2026-08-09 17:31:45 +00:00 · 2025-08-25 16:05:47 -07:00
parent 8903d6a85c
commit 9331e89d15
6 changed files with 248 additions and 169 deletions
@@ -0,0 +1,68 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2025 Thomas Krijnen <thomas@aecgeeks.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 pytest
+import ifcopenshell.api.alignment
+import ifcopenshell.api.context
+import ifcopenshell.api.unit
+
+
+def test_create_no_geometry():
+    file = ifcopenshell.file(schema="IFC4X3_ADD2")
+    project = file.createIfcProject(GlobalId=ifcopenshell.guid.new(), Name="Test")
+    length = ifcopenshell.api.unit.add_si_unit(file, unit_type="LENGTHUNIT")
+    ifcopenshell.api.unit.assign_unit(file, units=[length])
+
+    # creates an IfcAlignment with an IfcAlignmentHorizontal layout containing only the zero length segment
+    ali = ifcopenshell.api.alignment.create(file, "A1", include_vertical=True,include_geometry=False)
+
+    # append a segment to the horizontal layout
+    horizontal_alignment = ifcopenshell.api.alignment.get_horizontal_layout(ali)
+    vertical_alignment = ifcopenshell.api.alignment.get_vertical_layout(ali)
+
+    curve = ifcopenshell.api.alignment.get_curve(ali)
+    assert curve == None
+
+    design_parameters = file.create_entity(
+        type="IfcAlignmentHorizontalSegment",
+        StartTag=None,
+        EndTag=None,
+        StartPoint=file.createIfcCartesianPoint(Coordinates=((0.0, 0.0))),
+        StartDirection=0.0,
+        StartRadiusOfCurvature=0.0,
+        EndRadiusOfCurvature=0.0,
+        SegmentLength=100.0,
+        GravityCenterLineHeight=None,
+        PredefinedType="LINE",
+    )
+    end = ifcopenshell.api.alignment.create_layout_segment(file, horizontal_alignment, design_parameters)
+    assert end == None
+
+    design_parameters = file.createIfcAlignmentVerticalSegment(
+        StartDistAlong=0.0,
+        HorizontalLength=50.0,
+        StartHeight=20.0,
+        StartGradient=1.0 / 100.0,
+        EndGradient=1.0 / 100.0,
+        PredefinedType="CONSTANTGRADIENT",
+    )
+    end = ifcopenshell.api.alignment.create_layout_segment(file, vertical_alignment, design_parameters)
+    assert end == None
+
+
+test_create_no_geometry()