From 4909bd1b6e389ba33511d1e6efd746f00d53a957 Mon Sep 17 00:00:00 2001
From: enricoturri1966 <enricoturri@seznam.cz>
Date: Wed, 8 Feb 2023 14:20:10 +0100
Subject: [PATCH] Fixed Selection::get_bounding_box_in_reference_system() -
 Mirrored objects were not accounted properly

---
 src/slic3r/GUI/Selection.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/slic3r/GUI/Selection.cpp b/src/slic3r/GUI/Selection.cpp
index a9d06a76ec..8ecb205323 100644
--- a/src/slic3r/GUI/Selection.cpp
+++ b/src/slic3r/GUI/Selection.cpp
@@ -850,7 +850,9 @@ std::pair<BoundingBoxf3, Transform3d> Selection::get_bounding_box_in_reference_s
     //
     // trafo basis in world coordinates
     //
-    const Transform3d basis_trafo = Geometry::Transformation(trafo).get_rotation_matrix();
+    Geometry::Transformation t(trafo);
+    t.reset_scaling_factor();
+    const Transform3d basis_trafo = t.get_matrix_no_offset();
     std::vector<Vec3d> axes = { Vec3d::UnitX(), Vec3d::UnitY(), Vec3d::UnitZ() };
     for (size_t i = 0; i < axes.size(); ++i) {
         axes[i] = basis_trafo * axes[i];