From b0200c04ae03dddbec6cb22d9ce8fac6fffed19c Mon Sep 17 00:00:00 2001
From: Enrico Turri <enricoturri@seznam.cz>
Date: Mon, 20 May 2019 15:59:54 +0200
Subject: [PATCH] Fixed debug technology ENABLE_RENDER_SELECTION_CENTER

---
 src/slic3r/GUI/GLCanvas3D.cpp | 3 +--
 src/slic3r/GUI/Selection.cpp  | 6 +++---
 src/slic3r/GUI/Selection.hpp  | 7 ++++++-
 3 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index 48dc2e46e..26d205055 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -4025,8 +4025,7 @@ void GLCanvas3D::_render_selection() const
 #if ENABLE_RENDER_SELECTION_CENTER
 void GLCanvas3D::_render_selection_center() const
 {
-    if (!m_gizmos.is_running())
-        m_selection.render_center();
+    m_selection.render_center(m_gizmos.is_dragging());
 }
 #endif // ENABLE_RENDER_SELECTION_CENTER
 
diff --git a/src/slic3r/GUI/Selection.cpp b/src/slic3r/GUI/Selection.cpp
index 0b880c75f..00fbaa42a 100644
--- a/src/slic3r/GUI/Selection.cpp
+++ b/src/slic3r/GUI/Selection.cpp
@@ -955,14 +955,14 @@ void Selection::render(float scale_factor) const
 }
 
 #if ENABLE_RENDER_SELECTION_CENTER
-void Selection::render_center() const
+void Selection::render_center(bool gizmo_is_dragging) const
 {
     if (!m_valid || is_empty() || (m_quadric == nullptr))
         return;
 
-    const Vec3d& center = get_bounding_box().center();
+    Vec3d center = gizmo_is_dragging ? m_cache.dragging_center : get_bounding_box().center();
 
-    glsafe(::glDisable(GL_DEPTH_TEST)));
+    glsafe(::glDisable(GL_DEPTH_TEST));
 
     glsafe(::glEnable(GL_LIGHTING));
 
diff --git a/src/slic3r/GUI/Selection.hpp b/src/slic3r/GUI/Selection.hpp
index 4e5da3685..99d939acc 100644
--- a/src/slic3r/GUI/Selection.hpp
+++ b/src/slic3r/GUI/Selection.hpp
@@ -5,6 +5,11 @@
 #include "libslic3r/Geometry.hpp"
 #include "3DScene.hpp"
 
+#if ENABLE_RENDER_SELECTION_CENTER
+class GLUquadric;
+typedef class GLUquadric GLUquadricObj;
+#endif // ENABLE_RENDER_SELECTION_CENTER
+
 namespace Slic3r {
 namespace GUI {
 
@@ -291,7 +296,7 @@ public:
 
     void render(float scale_factor = 1.0) const;
 #if ENABLE_RENDER_SELECTION_CENTER
-    void render_center() const;
+    void render_center(bool gizmo_is_dragging) const;
 #endif // ENABLE_RENDER_SELECTION_CENTER
     void render_sidebar_hints(const std::string& sidebar_field) const;