From 32c9e8b168277e0d916c2f1eb1b69d1dc0c34139 Mon Sep 17 00:00:00 2001
From: Lukas Matena <lukasmatena@seznam.cz>
Date: Fri, 15 Mar 2019 10:15:23 +0100
Subject: [PATCH] A small fix of the gizmo grabbers picking

---
 src/slic3r/GUI/GLGizmo.cpp | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/src/slic3r/GUI/GLGizmo.cpp b/src/slic3r/GUI/GLGizmo.cpp
index e8e48b63c..359deed3a 100644
--- a/src/slic3r/GUI/GLGizmo.cpp
+++ b/src/slic3r/GUI/GLGizmo.cpp
@@ -252,13 +252,12 @@ std::array<float, 3> GLGizmoBase::picking_color_component(unsigned int id) const
 
     id = BASE - id;
 
-    std::array<float, 3> color;
+    if (m_group_id > -1)
+        id -= m_group_id;
 
-    color[0] = (float)((id >> 16) & 0xff) * INV_255; // red
-    color[1] = (float)((id >> 8) & 0xff) * INV_255; // green
-    color[2] = (float)(id & 0xff) * INV_255; // blue
-
-    return color;
+    return std::array<float, 3> { (float)((id >> 16) & 0xff) * INV_255, // red
+                                  (float)((id >> 8) & 0xff) * INV_255, // green
+                                  (float)(id & 0xff) * INV_255}; // blue
 }
 
 void GLGizmoBase::render_grabbers(const BoundingBoxf3& box) const