From 97de72314699aba8e53e3d3fb32a949c79c49751 Mon Sep 17 00:00:00 2001
From: enricoturri1966 <enricoturri@seznam.cz>
Date: Thu, 29 Jul 2021 09:03:20 +0200
Subject: [PATCH] Tech ENABLE_SINKING_CONTOURS -> Fix for showing sinking
 contours while dragging objects

---
 src/slic3r/GUI/GLCanvas3D.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index d76501e54..6a40a4e44 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -3135,9 +3135,6 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
                         m_selection.start_dragging();
                         m_mouse.drag.start_position_3D = m_mouse.scene_position;
                         m_sequential_print_clearance_first_displacement = true;
-#if ENABLE_SINKING_CONTOURS
-                        show_sinking_contours();
-#endif // ENABLE_SINKING_CONTOURS
                         m_moving = true;
                     }
                 }
@@ -3323,6 +3320,11 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
     else
         evt.Skip();
 
+#if ENABLE_SINKING_CONTOURS
+    if (m_moving)
+        show_sinking_contours();
+#endif // ENABLE_SINKING_CONTOURS
+
 #ifdef __WXMSW__
 	if (on_enter_workaround)
 		m_mouse.position = Vec2d(-1., -1.);