FEM: add a context command to clear the FEM mesh

src/Mod/Fem/App/CMakeLists.txt

@@ -63,6 +63,7 @@ SOURCE_GROUP("Module" FILES ${Mod_SRCS})
 SET(FemScripts_SRCS
     _CommandAnalysis.py
     _CommandBeamSection.py
+    _CommandClearMesh.py
     _CommandControlSolver.py
     _CommandConstraintSelfWeight.py
     _CommandFEMMesh2Mesh.py

src/Mod/Fem/CMakeLists.txt

@@ -24,6 +24,7 @@ INSTALL(
         TestFem.py
 
         FemCommands.py
+        _CommandClearMesh.py
         _CommandMeshNetgenFromShape.py
         _CommandPurgeResults.py
         _CommandRunSolver.py

src/Mod/Fem/Gui/Workbench.cpp

@@ -50,6 +50,12 @@ Workbench::~Workbench()
 {
 }
 
+void Workbench::setupContextMenu(const char* recipient, Gui::MenuItem* item) const
+{
+     StdWorkbench::setupContextMenu( recipient, item );
+     *item << "Separator" << "Fem_ClearMesh";
+}
+
 Gui::ToolBarItem* Workbench::setupToolBars() const
 {
     Gui::ToolBarItem* root = StdWorkbench::setupToolBars();

src/Mod/Fem/Gui/Workbench.h

@@ -38,6 +38,7 @@ class FemGuiExport Workbench : public Gui::StdWorkbench
 public:
   Workbench();
   virtual ~Workbench();
+  void setupContextMenu(const char* recipient, Gui::MenuItem*) const;
 
 protected:
   Gui::ToolBarItem* setupToolBars() const;

src/Mod/Fem/InitGui.py

@@ -48,6 +48,7 @@ class FemWorkbench (Workbench):
         import _CommandShowResult
         import _CommandRunSolver
         import _CommandPurgeResults
+        import _CommandClearMesh
         import _CommandControlSolver
         import _CommandFEMMesh2Mesh
         import _CommandMeshGmshFromShape

src/Mod/Fem/_CommandClearMesh.py

@@ -0,0 +1,56 @@
+# ***************************************************************************
+# *                                                                         *
+# *   Copyright (c) 2016 - Bernd Hahnebach <bernd@bimstatik.org>            *
+# *                                                                         *
+# *   This program is free software; you can redistribute it and/or modify  *
+# *   it under the terms of the GNU Lesser General Public License (LGPL)    *
+# *   as published by the Free Software Foundation; either version 2 of     *
+# *   the License, or (at your option) any later version.                   *
+# *   for detail see the LICENCE text file.                                 *
+# *                                                                         *
+# *   This program is distributed in the hope that it will be useful,       *
+# *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+# *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+# *   GNU Library General Public License for more details.                  *
+# *                                                                         *
+# *   You should have received a copy of the GNU Library General Public     *
+# *   License along with this program; if not, write to the Free Software   *
+# *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
+# *   USA                                                                   *
+# *                                                                         *
+# ***************************************************************************
+
+__title__ = "Clear the FemMesh of a FEM mesh object"
+__author__ = "Bernd Hahnebach"
+__url__ = "http://www.freecadweb.org"
+
+## @package CommandClearMesh
+#  \ingroup FEM
+
+import FreeCAD
+from FemCommands import FemCommands
+import FreeCADGui
+from PySide import QtCore
+
+
+class _CommandClearMesh(FemCommands):
+    "clear the FEM mesh"
+    def __init__(self):
+        super(_CommandClearMesh, self).__init__()
+        self.resources = {'Pixmap': 'fem-femmesh-from-shape',
+                          'MenuText': QtCore.QT_TRANSLATE_NOOP("Fem_ClearMesh", "Clear FEM mesh"),
+                          # 'Accel': "Z, Z",
+                          'ToolTip': QtCore.QT_TRANSLATE_NOOP("Fem_ClearMesh", "Clear the Mesh of a FEM mesh object")}
+        self.is_active = 'with_femmesh'
+
+    def Activated(self):
+        sel = FreeCADGui.Selection.getSelection()
+        if len(sel) == 1 and sel[0].isDerivedFrom("Fem::FemMeshObject"):
+            FreeCAD.ActiveDocument.openTransaction("Clear FEM mesh")
+            FreeCADGui.addModule("Fem")
+            FreeCADGui.doCommand("App.ActiveDocument." + sel[0].Name + ".FemMesh = Fem.FemMesh()")
+            FreeCADGui.doCommand("App.ActiveDocument.recompute()")
+
+        FreeCADGui.Selection.clearSelection()
+
+FreeCADGui.addCommand('Fem_ClearMesh',_CommandClearMesh())