MeshFlattening: add function to unwrap mesh

src/Mod/Mesh/Gui/AppMeshGui.cpp

@@ -112,6 +112,13 @@ PyMOD_INIT_FUNC(MeshGui)
     // instantiating the commands
     CreateMeshCommands();
     (void)new MeshGui::CleanupHandler;
+    
+    // try to instantiate flat-mesh commands
+    try{
+        Base::Interpreter().runString("import MeshFlatteningCommand");
+    } catch (Base::PyException &err){
+        err.ReportException();
+    }
 
     // register preferences pages
     (void)new Gui::PrefPageProducer<MeshGui::DlgSettingsMeshView> ("Display");

src/Mod/Mesh/Gui/Workbench.cpp

@@ -193,7 +193,7 @@ Gui::MenuItem* Workbench::setupMenuBar() const
           << "Mesh_Merge" << "Mesh_PolySelect" << "Mesh_PolyCut"
           << "Mesh_PolySplit" << "Mesh_PolySegm" << "Mesh_PolyTrim" << "Separator"
           << "Mesh_TrimByPlane" << "Mesh_SectionByPlane" << "Mesh_Segmentation"
-          << "Mesh_VertexCurvature";
+          << "Mesh_VertexCurvature" << "CreateFlatMesh";
     return root;
 }
 

src/Mod/Mesh/InitGui.py

@@ -39,13 +39,8 @@ class MeshWorkbench (Workbench):
     def Initialize(self):
         import Mesh
         import MeshGui
-        # try:
         import MeshFlatteningCommand
-        toolbar = MeshFlatteningCommand.initialize()
-        self.appendToolbar(toolbar)
-        # except ImportError:
-        #     import FreeCAD as app
-        #     app.Message("MeshPart not found")
+
     def GetClassName(self):
         return "MeshGui::Workbench"