Include cleanup: do not include Model.hpp from 3DScene.hpp

src/slic3r/GUI/GLCanvas3D.hpp

@@ -15,6 +15,8 @@
 #include "GLSelectionRectangle.hpp"
 #include "MeshUtils.hpp"
 
+#include "libslic3r/Slicing.hpp"
+
 #include <float.h>
 
 #include <wx/timer.h>
@@ -33,13 +35,13 @@ class wxGLContext;
 
 namespace Slic3r {
 
-class Bed3D;
 struct Camera;
 class BackgroundSlicingProcess;
 class GCodePreviewData;
 struct ThumbnailData;
-struct SlicingParameters;
-enum LayerHeightEditActionType : unsigned int;
+class ModelObject;
+class ModelInstance;
+class PrintObject;
 
 namespace GUI {