+ expose function to Python to check for invalid mesh points

src/Mod/Mesh/App/Mesh.cpp

@@ -1195,6 +1195,12 @@ void MeshObject::removeFullBoundaryFacets()
     }
 }
 
+bool MeshObject::hasInvalidPoints() const
+{
+    MeshCore::MeshEvalNaNPoints nan(_kernel);
+    return !nan.GetIndices().empty();
+}
+
 void MeshObject::removeInvalidPoints()
 {
     MeshCore::MeshEvalNaNPoints nan(_kernel);

src/Mod/Mesh/App/Mesh.h

@@ -268,6 +268,7 @@ public:
     void removeSelfIntersections(const std::vector<unsigned long>&);
     void removeFoldsOnSurface();
     void removeFullBoundaryFacets();
+    bool hasInvalidPoints() const;
     void removeInvalidPoints();
     //@}
 

src/Mod/Mesh/App/MeshFeaturePy.xml

@@ -72,5 +72,10 @@ d.addObject(\"Mesh::Feature\").
 				<UserDocu>Remove folds on surfaces</UserDocu>
 			</Documentation>
 		</Methode>
+		<Methode Name="removeInvalidPoints">
+			<Documentation>
+				<UserDocu>Remove points with invalid coordinates (NaN)</UserDocu>
+			</Documentation>
+		</Methode>
 	</PythonExport>
 </GenerateModel>

src/Mod/Mesh/App/MeshFeaturePyImp.cpp

@@ -191,6 +191,23 @@ PyObject*  MeshFeaturePy::removeFoldsOnSurface(PyObject *args)
     Py_Return;
 }
 
+PyObject*  MeshFeaturePy::removeInvalidPoints(PyObject *args)
+{
+    if (!PyArg_ParseTuple(args, ""))
+        return NULL;
+    try {
+        Mesh::Feature* obj = getFeaturePtr();
+        MeshObject* kernel = obj->Mesh.startEditing();
+        kernel->removeInvalidPoints();
+        obj->Mesh.finishEditing();
+    }
+    catch (const Base::Exception& e) {
+        PyErr_SetString(Base::BaseExceptionFreeCADError, e.what());
+        return NULL;
+    }
+    Py_Return;
+}
+
 PyObject *MeshFeaturePy::getCustomAttributes(const char* /*attr*/) const
 {
     return 0;

src/Mod/Mesh/App/MeshPy.xml

@@ -232,6 +232,16 @@ for c in mesh.getSeparatecomponents():
 				<UserDocu>Get the number of wrong oriented facets</UserDocu>
 			</Documentation>
 		</Methode>
+		<Methode Name="hasInvalidPoints" Const="true">
+			<Documentation>
+				<UserDocu>Check if the mesh has points with invalid coordinates (NaN)</UserDocu>
+			</Documentation>
+		</Methode>
+		<Methode Name="removeInvalidPoints">
+			<Documentation>
+				<UserDocu>Remove points with invalid coordinates (NaN)</UserDocu>
+			</Documentation>
+		</Methode>
 		<Methode Name="countComponents" Const="true">
 			<Documentation>
 				<UserDocu>Get the number of topologic independent areas</UserDocu>

src/Mod/Mesh/App/MeshPyImp.cpp

@@ -833,6 +833,28 @@ PyObject*  MeshPy::removeFoldsOnSurface(PyObject *args)
     Py_Return;
 }
 
+PyObject*  MeshPy::hasInvalidPoints(PyObject *args)
+{
+    if (!PyArg_ParseTuple(args, ""))
+        return NULL;
+    bool ok = getMeshObjectPtr()->hasInvalidPoints();
+    return Py_BuildValue("O", (ok ? Py_True : Py_False)); 
+}
+
+PyObject*  MeshPy::removeInvalidPoints(PyObject *args)
+{
+    if (!PyArg_ParseTuple(args, ""))
+        return NULL;
+    try {
+        getMeshObjectPtr()->removeInvalidPoints();
+    }
+    catch (const Base::Exception& e) {
+        PyErr_SetString(Base::BaseExceptionFreeCADError, e.what());
+        return NULL;
+    }
+    Py_Return;
+}
+
 PyObject*  MeshPy::flipNormals(PyObject *args)
 {
     if (!PyArg_ParseTuple(args, ""))