FEM: Add cylinder filter function

src/Mod/Fem/App/FemPostFunction.h

@@ -24,6 +24,7 @@
 #define Fem_FemPostFunction_H
 
 #include <vtkBoundingBox.h>
+#include <vtkCylinder.h>
 #include <vtkImplicitFunction.h>
 #include <vtkPlane.h>
 #include <vtkSmartPointer.h>
@@ -81,6 +82,32 @@ protected:
     void onChanged(const App::Property* prop) override;
 };
 
+// ---------------------------------------------------------------------------
+
+class FemExport FemPostCylinderFunction : public FemPostFunction
+{
+    PROPERTY_HEADER_WITH_OVERRIDE(Fem::FemPostCylinderFunction);
+
+public:
+
+    FemPostCylinderFunction();
+    ~FemPostCylinderFunction() override;
+
+    App::PropertyVector           Axis;
+    App::PropertyVectorDistance   Center;
+    App::PropertyDistance         Radius;
+
+    const char* getViewProviderName() const override {
+        return "FemGui::ViewProviderFemPostCylinderFunction";
+    }
+
+protected:
+    void onChanged(const App::Property* prop) override;
+    /// get called after a document has been fully restored
+//    void onDocumentRestored() override;
+
+    vtkSmartPointer<vtkCylinder> m_cylinder;
+};
 
 // ---------------------------------------------------------------------------