From 882e0a4ae94137588ebd8d6c06b1c336b9a7e795 Mon Sep 17 00:00:00 2001
From: Andrej730 <azhilenkov@gmail.com>
Date: Tue, 18 Jun 2024 13:50:02 +0500
Subject: [PATCH] Fix instance_id in geometry.materials returning material id
 instead of style id

---
 src/ifcgeom/mapping/bind_convert_impl.i | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/ifcgeom/mapping/bind_convert_impl.i b/src/ifcgeom/mapping/bind_convert_impl.i
index fa440f46f3..f3a9e49033 100644
--- a/src/ifcgeom/mapping/bind_convert_impl.i
+++ b/src/ifcgeom/mapping/bind_convert_impl.i
@@ -8,7 +8,9 @@
 		try { \
 			item = map_impl(inst->as<IfcSchema::T>()); \
 			if (item != nullptr) { \
-				item->instance = inst; \
+				if (!(item->instance && inst->as<IfcSchema::IfcMaterial>())) { \
+					item->instance = inst; \
+				} \
 				try { \
 					if (inst->as<IfcSchema::IfcRepresentationItem>() && !inst->as<IfcSchema::IfcStyledItem>() && \
 						/* @todo */ \