First Commit

2026-05-31 10:17:09 +07:00
commit 17a9c69379
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+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2025 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/>.
+
+from typing import Optional
+
+import numpy as np
+
+import ifcopenshell
+import ifcopenshell.api.geometry
+import ifcopenshell.util.placement
+import ifcopenshell.util.representation
+import ifcopenshell.util.shape_builder
+
+
+def connect_wall(
+    file: ifcopenshell.file,
+    wall1: ifcopenshell.entity_instance,
+    wall2: ifcopenshell.entity_instance,
+    is_atpath: bool = False,
+) -> Optional[ifcopenshell.entity_instance]:
+    matrix1i = np.linalg.inv(ifcopenshell.util.placement.get_local_placement(wall1.ObjectPlacement))
+    matrix2 = ifcopenshell.util.placement.get_local_placement(wall2.ObjectPlacement)
+    axis1 = ifcopenshell.util.representation.get_reference_line(wall1)
+    axis2 = ifcopenshell.util.representation.get_reference_line(wall2)
+    axis2[0] = (matrix1i @ matrix2 @ np.concatenate((axis2[0], (0, 1))))[:2]
+    axis2[1] = (matrix1i @ matrix2 @ np.concatenate((axis2[1], (0, 1))))[:2]
+    midx = (axis1[0][0] + axis1[1][0]) / 2
+    starty = axis2[0][1]
+    endy = axis2[1][1]
+    y = axis1[0][1]
+
+    if (x := ifcopenshell.util.shape_builder.intersect_x_axis_2d(*axis2, y=y)) is None:
+        return
+
+    wall1_end = "ATEND" if x > midx else "ATSTART"
+    if is_atpath:
+        wall2_end = "ATPATH"
+    elif abs(y - starty) < abs(y - endy):
+        wall2_end = "ATSTART"
+    else:
+        wall2_end = "ATEND"
+
+    return ifcopenshell.api.geometry.connect_path(
+        file,
+        relating_element=wall1,
+        related_element=wall2,
+        relating_connection=wall1_end,
+        related_connection=wall2_end,
+    )