Updated alignment stationing to account for stationing being defined on a parent alignment

src/ifcopenshell-python/ifcopenshell/api/alignment/_add_segment_to_layout.py

@@ -163,6 +163,12 @@ def _add_segment_to_layout(file: ifcopenshell.file, layout: entity_instance, seg
     end_referent.ObjectPlacement.CartesianPosition.Axis.DirectionRatios = (ax, ay, az)
     end_referent.ObjectPlacement.CartesianPosition.RefDirection.DirectionRatios = (rx, ry, rz)
 
+    start_station = ifcopenshell.api.alignment.get_alignment_station(file,alignment)
+    end_referent_station = start_station + start_dist_along
+    pset_stationing = ifcopenshell.api.pset.add_pset(file, product=end_referent, name="Pset_Stationing")
+    ifcopenshell.api.pset.edit_pset(file, pset=pset_stationing, properties={"Station": end_referent_station})
+
+
     # create the start of segment referent
 
     # get the previous segment. Working from the end of the basis curve, -1 is zero length segment

src/ifcopenshell-python/ifcopenshell/api/alignment/get_alignment_station.py

@@ -17,6 +17,7 @@
 # along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
 
 import ifcopenshell
+import ifcopenshell.api.alignment
 import ifcopenshell.util.element
 from ifcopenshell import entity_instance
 
@@ -32,10 +33,16 @@ def get_alignment_station(file: ifcopenshell.file, alignment: entity_instance) -
         raise TypeError(f"Expected entity type to be IfcAlignment, instead received {alignment.is_a()}")
 
     start_station = 0.0
-    components = ifcopenshell.util.element.get_components(alignment)
-    for c in components:
-        if c.is_a("IfcReferent") and ifcopenshell.util.element.get_predefined_type(c) == "STATION":
-            start_station = ifcopenshell.util.element.get_pset(c, name="Pset_Stationing", prop="Station")
-            break
+
+    parent_alignment = ifcopenshell.api.alignment.get_parent_alignment(alignment)
+    if parent_alignment:
+        start_station = ifcopenshell.api.alignment.get_alignment_station(file,parent_alignment)
+    else:
+        components = ifcopenshell.util.element.get_components(alignment)
+        for c in components:
+            if c.is_a("IfcReferent") and ifcopenshell.util.element.get_predefined_type(c) == "STATION":
+                start_station = ifcopenshell.util.element.get_pset(c, name="Pset_Stationing", prop="Station")
+                break
+
 
     return start_station