From 11deb955f8b03e72fb9d5a756ac1bcf4a007fdcd Mon Sep 17 00:00:00 2001
From: Thomas Krijnen <t.krijnen@gmail.com>
Date: Tue, 24 Sep 2024 13:04:58 +0200
Subject: [PATCH] Fix ellipse major < minor workaround #5470

---
 src/ifcgeom/mapping/IfcEllipse.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/ifcgeom/mapping/IfcEllipse.cpp b/src/ifcgeom/mapping/IfcEllipse.cpp
index 1d1e70e303..8d79068aa4 100644
--- a/src/ifcgeom/mapping/IfcEllipse.cpp
+++ b/src/ifcgeom/mapping/IfcEllipse.cpp
@@ -41,8 +41,8 @@ taxonomy::ptr mapping::map_impl(const IfcSchema::IfcEllipse* inst) {
 		// @todo is a copy necesary here or can this be done in place?
 		auto m4_copy = *el->matrix;
 		el->matrix->components() <<
-			-m4_copy.components().col(1),
-			m4_copy.components().col(0),
+			m4_copy.components().col(1),
+			-m4_copy.components().col(0),
 			m4_copy.components().col(2),
 			m4_copy.components().col(3);
 		std::swap(x, y);