From ffd944f4f9de287f7c12ded554abe260e44778c2 Mon Sep 17 00:00:00 2001
From: Andrej730 <azhilenkov@gmail.com>
Date: Wed, 12 Jun 2024 13:53:52 +0500
Subject: [PATCH] style->instance_id to consider possible
 IfcPresentationStyleAssignment in ifc2x3/ifc4

---
 src/ifcwrap/IfcGeomWrapper.i | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/ifcwrap/IfcGeomWrapper.i b/src/ifcwrap/IfcGeomWrapper.i
index ea4d637356..fe08541a6f 100644
--- a/src/ifcwrap/IfcGeomWrapper.i
+++ b/src/ifcwrap/IfcGeomWrapper.i
@@ -213,6 +213,15 @@ std::string taxonomy_item_repr(ifcopenshell::geometry::taxonomy::item::ptr i) {
 			aggregate_of_instance::ptr styles = *ent->get("Styles");
 			if (styles->size() == 1) {
 				ent = (*styles->begin())->as<IfcUtil::IfcBaseEntity>();
+				// < IFC4X3.
+				if (ent->declaration().name() == "IfcPresentationStyleAssignment") {
+					aggregate_of_instance::ptr styles = *ent->get("Styles");
+					if (styles->size() == 1) {
+						ent = (*styles->begin())->as<IfcUtil::IfcBaseEntity>();
+					} else {
+						return 0;
+					}
+				}
 			} else {
 				return 0;
 			}