Exemplo n.º 1
0
PyObject* FemMeshPy::addVolume(PyObject *args)
{
    int n1,n2,n3,n4;
    if (!PyArg_ParseTuple(args, "iiii",&n1,&n2,&n3,&n4))
        return 0;

    try {
        SMESH_Mesh* mesh = getFemMeshPtr()->getSMesh();
        SMESHDS_Mesh* meshDS = mesh->GetMeshDS();
        const SMDS_MeshNode* node1 = meshDS->FindNode(n1);
        const SMDS_MeshNode* node2 = meshDS->FindNode(n2);
        const SMDS_MeshNode* node3 = meshDS->FindNode(n3);
        const SMDS_MeshNode* node4 = meshDS->FindNode(n4);
        if (!node1 || !node2 || !node3 || !node4)
            throw std::runtime_error("Failed to get node of the given indices");
        SMDS_MeshVolume* vol = meshDS->AddVolume(node1, node2, node3, node4);
        if (!vol)
            throw std::runtime_error("Failed to add volume");
        return Py::new_reference_to(Py::Int(vol->GetID()));
    }
    catch (const std::exception& e) {
        PyErr_SetString(PyExc_Exception, e.what());
        return 0;
    }
}
Exemplo n.º 2
0
PyObject* FemMeshPy::addQuad(PyObject *args)
{
    int n1,n2,n3,n4;
    if (!PyArg_ParseTuple(args, "iiii",&n1,&n2,&n3,&n4))
        return 0;

    try {
        SMESH_Mesh* mesh = getFemMeshPtr()->getSMesh();
        SMESHDS_Mesh* meshDS = mesh->GetMeshDS();
        const SMDS_MeshNode* node1 = meshDS->FindNode(n1);
        const SMDS_MeshNode* node2 = meshDS->FindNode(n2);
        const SMDS_MeshNode* node3 = meshDS->FindNode(n3);
        const SMDS_MeshNode* node4 = meshDS->FindNode(n4);
        if (!node1 || !node2 || !node3 || !node4)
            throw std::runtime_error("Failed to get node of the given indices");
        SMDS_MeshFace* face = meshDS->AddFace(node1, node2, node3, node4);
        if (!face)
            throw std::runtime_error("Failed to add quad");
        return Py::new_reference_to(Py::Long(face->GetID()));
    }
    catch (const std::exception& e) {
        PyErr_SetString(Base::BaseExceptionFreeCADError, e.what());
        return 0;
    }
}
Exemplo n.º 3
0
PyObject* FemMeshPy::addEdge(PyObject *args)
{
    int n1,n2;
    if (!PyArg_ParseTuple(args, "ii",&n1,&n2))
        return 0;

    try {
        SMESH_Mesh* mesh = getFemMeshPtr()->getSMesh();
        SMESHDS_Mesh* meshDS = mesh->GetMeshDS();
        const SMDS_MeshNode* node1 = meshDS->FindNode(n1);
        const SMDS_MeshNode* node2 = meshDS->FindNode(n2);
        if (!node1 || !node2)
            throw std::runtime_error("Failed to get node of the given indices");
        SMDS_MeshEdge* edge = meshDS->AddEdge(node1, node2);
        if (!edge)
            throw std::runtime_error("Failed to add edge");
        return Py::new_reference_to(Py::Int(edge->GetID()));
    }
    catch (const std::exception& e) {
        PyErr_SetString(PyExc_Exception, e.what());
        return 0;
    }
}
Exemplo n.º 4
0
PyObject* FemMeshPy::addVolume(PyObject *args)
{
    SMESH_Mesh* mesh = getFemMeshPtr()->getSMesh();
    SMESHDS_Mesh* meshDS = mesh->GetMeshDS();

    int n1,n2,n3,n4;
    if (PyArg_ParseTuple(args, "iiii",&n1,&n2,&n3,&n4))
    {
        try {
            const SMDS_MeshNode* node1 = meshDS->FindNode(n1);
            const SMDS_MeshNode* node2 = meshDS->FindNode(n2);
            const SMDS_MeshNode* node3 = meshDS->FindNode(n3);
            const SMDS_MeshNode* node4 = meshDS->FindNode(n4);
            if (!node1 || !node2 || !node3 || !node4)
                throw std::runtime_error("Failed to get node of the given indices");
            SMDS_MeshVolume* vol = meshDS->AddVolume(node1, node2, node3, node4);
            if (!vol)
                throw std::runtime_error("Failed to add volume");
            return Py::new_reference_to(Py::Long(vol->GetID()));
        }
        catch (const std::exception& e) {
            PyErr_SetString(Base::BaseExceptionFreeCADError, e.what());
            return 0;
        }
    }
    PyErr_Clear();

    PyObject *obj;
    int ElementId=-1;
    if (PyArg_ParseTuple(args, "O!|i", &PyList_Type, &obj, &ElementId))
    {
        Py::List list(obj);
        std::vector<const SMDS_MeshNode*> Nodes;
        for (Py::List::iterator it = list.begin(); it != list.end(); ++it) {
#if PY_MAJOR_VERSION >= 3
            Py::Long NoNr(*it);
#else
            Py::Int NoNr(*it);
#endif
            const SMDS_MeshNode* node = meshDS->FindNode(NoNr);
            if (!node)
                throw std::runtime_error("Failed to get node of the given indices");
            Nodes.push_back(node);
        }

        SMDS_MeshVolume* vol=0;
        if(ElementId != -1) {
            switch(Nodes.size()){
                case 4:
                    vol = meshDS->AddVolumeWithID(Nodes[0],Nodes[1],Nodes[2],Nodes[3],ElementId);
                    if (!vol)
                        throw std::runtime_error("Failed to add Tet4 volume with given ElementId");
                    break;
                case 5:
                    vol = meshDS->AddVolumeWithID(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],ElementId);
                    if (!vol)
                        throw std::runtime_error("Failed to add Pyra5 volume with given ElementId");
                    break;
                case 6:
                    vol = meshDS->AddVolumeWithID(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],ElementId);
                    if (!vol)
                        throw std::runtime_error("Failed to add Penta6 volume with given ElementId");
                    break;
                case 8:
                    vol = meshDS->AddVolumeWithID(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],Nodes[6],Nodes[7],ElementId);
                    if (!vol)
                        throw std::runtime_error("Failed to add Hexa8 volume with given ElementId");
                    break;
                case 10:
                    vol = meshDS->AddVolumeWithID(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],Nodes[6],Nodes[7],Nodes[8],Nodes[9],ElementId);
                    if (!vol)
                        throw std::runtime_error("Failed to add Tet10 volume with given ElementId");
                    break;
                case 13:
                    vol = meshDS->AddVolumeWithID(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],Nodes[6],Nodes[7],Nodes[8],Nodes[9],Nodes[10],Nodes[11],Nodes[12],ElementId);
                    if (!vol)
                        throw std::runtime_error("Failed to add Pyra13 volume with given ElementId");
                    break;
                case 15:
                    vol = meshDS->AddVolumeWithID(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],Nodes[6],Nodes[7],Nodes[8],Nodes[9],Nodes[10],Nodes[11],Nodes[12],Nodes[13],Nodes[14],ElementId);
                    if (!vol)
                        throw std::runtime_error("Failed to add Penta15 volume with given ElementId");
                    break;
                case 20:
                    vol = meshDS->AddVolumeWithID(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],Nodes[6],Nodes[7],Nodes[8],Nodes[9],Nodes[10],Nodes[11],Nodes[12],Nodes[13],Nodes[14],Nodes[15],Nodes[16],Nodes[17],Nodes[18],Nodes[19],ElementId);
                    if (!vol)
                        throw std::runtime_error("Failed to add Hexa20 volume with given ElementId");
                    break;
                default: throw std::runtime_error("Unknown node count, [4|5|6|8|10|13|15|20] are allowed"); //unknown volume type
            }
        }else{
            switch(Nodes.size()){
                case 4:
                    vol = meshDS->AddVolume(Nodes[0],Nodes[1],Nodes[2],Nodes[3]);
                    if (!vol)
                        throw std::runtime_error("Failed to add Tet4 volume");
                    break;
                case 5:
                    vol = meshDS->AddVolume(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4]);
                    if (!vol)
                        throw std::runtime_error("Failed to add Pyra5 volume");
                    break;
                case 6:
                    vol = meshDS->AddVolume(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5]);
                    if (!vol)
                        throw std::runtime_error("Failed to add Penta6 volume");
                    break;
                case 8:
                    vol = meshDS->AddVolume(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],Nodes[6],Nodes[7]);
                    if (!vol)
                        throw std::runtime_error("Failed to add Hexa8 volume");
                    break;
                case 10:
                    vol = meshDS->AddVolume(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],Nodes[6],Nodes[7],Nodes[8],Nodes[9]);
                    if (!vol)
                        throw std::runtime_error("Failed to add Tet10 volume");
                    break;
                case 13:
                    vol = meshDS->AddVolume(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],Nodes[6],Nodes[7],Nodes[8],Nodes[9],Nodes[10],Nodes[11],Nodes[12]);
                    if (!vol)
                        throw std::runtime_error("Failed to add Pyra13 volume");
                    break;
                case 15:
                    vol = meshDS->AddVolume(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],Nodes[6],Nodes[7],Nodes[8],Nodes[9],Nodes[10],Nodes[11],Nodes[12],Nodes[13],Nodes[14]);
                    if (!vol)
                        throw std::runtime_error("Failed to add Penta15 volume");
                    break;
                case 20:
                    vol = meshDS->AddVolume(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],Nodes[6],Nodes[7],Nodes[8],Nodes[9],Nodes[10],Nodes[11],Nodes[12],Nodes[13],Nodes[14],Nodes[15],Nodes[16],Nodes[17],Nodes[18],Nodes[19]);
                    if (!vol)
                        throw std::runtime_error("Failed to add Hexa20 volume");
                    break;
                default: throw std::runtime_error("Unknown node count, [4|5|6|8|10|13|15|20] are allowed"); //unknown volume type
            }
        }

        return Py::new_reference_to(Py::Long(vol->GetID()));

    }
    PyErr_SetString(PyExc_TypeError, "addVolume accepts:\n"
        "-- int,int,int,int\n"
        "-- [4|5|6|8|10|13|15|20 int],[int]\n");
    return 0;
}
Exemplo n.º 5
0
PyObject* FemMeshPy::addFace(PyObject *args)
{
    SMESH_Mesh* mesh = getFemMeshPtr()->getSMesh();
    SMESHDS_Mesh* meshDS = mesh->GetMeshDS();

    int n1,n2,n3;
    if (PyArg_ParseTuple(args, "iii",&n1,&n2,&n3))
    {
        // old form, deprecated
        try {
            const SMDS_MeshNode* node1 = meshDS->FindNode(n1);
            const SMDS_MeshNode* node2 = meshDS->FindNode(n2);
            const SMDS_MeshNode* node3 = meshDS->FindNode(n3);
            if (!node1 || !node2 || !node3)
                throw std::runtime_error("Failed to get node of the given indices");
            SMDS_MeshFace* face = meshDS->AddFace(node1, node2, node3);
            if (!face)
                throw std::runtime_error("Failed to add face");
            return Py::new_reference_to(Py::Long(face->GetID()));
        }
        catch (const std::exception& e) {
            PyErr_SetString(Base::BaseExceptionFreeCADError, e.what());
            return 0;
        }
    }
    PyErr_Clear();

    PyObject *obj;
    int ElementId=-1;
    if (PyArg_ParseTuple(args, "O!|i", &PyList_Type, &obj, &ElementId))
    {
        Py::List list(obj);
        std::vector<const SMDS_MeshNode*> Nodes;
        for (Py::List::iterator it = list.begin(); it != list.end(); ++it) {
#if PY_MAJOR_VERSION >= 3
            Py::Long NoNr(*it);
#else
            Py::Int NoNr(*it);
#endif
            const SMDS_MeshNode* node = meshDS->FindNode(NoNr);
            if (!node)
                throw std::runtime_error("Failed to get node of the given indices");
            Nodes.push_back(node);
        }

        SMDS_MeshFace* face=0;
        if(ElementId != -1) {
            switch(Nodes.size()){
                case 3:
                    face = meshDS->AddFaceWithID(Nodes[0],Nodes[1],Nodes[2],ElementId);
                    if (!face)
                        throw std::runtime_error("Failed to add triangular face with given ElementId");
                    break;
                case 4:
                    face = meshDS->AddFaceWithID(Nodes[0],Nodes[1],Nodes[2],Nodes[3],ElementId);
                    if (!face)
                        throw std::runtime_error("Failed to add face with given ElementId");
                    break;
                case 6:
                    face = meshDS->AddFaceWithID(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],ElementId);
                    if (!face)
                        throw std::runtime_error("Failed to add face with given ElementId");
                    break;
                case 8:
                    face = meshDS->AddFaceWithID(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],Nodes[6],Nodes[7],ElementId);
                    if (!face)
                        throw std::runtime_error("Failed to add face with given ElementId");
                    break;
                default:
                    throw std::runtime_error("Unknown node count, [3|4|6|8] are allowed"); //unknown face type
            }
        }else{
            switch(Nodes.size()){
                case 3:
                    face = meshDS->AddFace(Nodes[0],Nodes[1],Nodes[2]);
                    if (!face)
                        throw std::runtime_error("Failed to add triangular face");
                    break;
                case 4:
                    face = meshDS->AddFace(Nodes[0],Nodes[1],Nodes[2],Nodes[3]);
                    if (!face)
                        throw std::runtime_error("Failed to add face");
                    break;
                case 6:
                    face = meshDS->AddFace(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5]);
                    if (!face)
                        throw std::runtime_error("Failed to add face");
                    break;
                case 8:
                    face = meshDS->AddFace(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],Nodes[6],Nodes[7]);
                    if (!face)
                        throw std::runtime_error("Failed to add face");
                    break;
                default:
                    throw std::runtime_error("Unknown node count, [4|5|6|8] are allowed"); //unknown face type
            }
        }

        return Py::new_reference_to(Py::Long(face->GetID()));

    }
    PyErr_SetString(PyExc_TypeError, "addFace accepts:\n"
        "-- int,int,int\n"
        "-- [3|4|6|8 int],[int]\n");
    return 0;
}
Exemplo n.º 6
0
PyObject* FemMeshPy::addEdge(PyObject *args)
{
    SMESH_Mesh* mesh = getFemMeshPtr()->getSMesh();
    SMESHDS_Mesh* meshDS = mesh->GetMeshDS();

    int n1,n2;
    if (PyArg_ParseTuple(args, "ii",&n1,&n2)) {
        try {
            const SMDS_MeshNode* node1 = meshDS->FindNode(n1);
            const SMDS_MeshNode* node2 = meshDS->FindNode(n2);
            if (!node1 || !node2)
                throw std::runtime_error("Failed to get node of the given indices");
            SMDS_MeshEdge* edge = meshDS->AddEdge(node1, node2);
            if (!edge)
                throw std::runtime_error("Failed to add edge");
            return Py::new_reference_to(Py::Long(edge->GetID()));
        }
        catch (const std::exception& e) {
            PyErr_SetString(Base::BaseExceptionFreeCADError, e.what());
            return 0;
        }
    }
    PyErr_Clear();

    PyObject *obj;
    int ElementId=-1;
    if (PyArg_ParseTuple(args, "O!|i", &PyList_Type, &obj, &ElementId))
    {
        Py::List list(obj);
        std::vector<const SMDS_MeshNode*> Nodes;
        for (Py::List::iterator it = list.begin(); it != list.end(); ++it) {
#if PY_MAJOR_VERSION >= 3
            Py::Long NoNr(*it);
#else
            Py::Int NoNr(*it);
#endif
            const SMDS_MeshNode* node = meshDS->FindNode(NoNr);
            if (!node)
                throw std::runtime_error("Failed to get node of the given indices");
            Nodes.push_back(node);
        }

        SMDS_MeshEdge* edge=0;
        if(ElementId != -1) {
            switch(Nodes.size()){
                case 2:
                    edge = meshDS->AddEdgeWithID(Nodes[0],Nodes[1],ElementId);
                    if (!edge)
                        throw std::runtime_error("Failed to add edge with given ElementId");
                    break;
                case 3:
                    edge = meshDS->AddEdgeWithID(Nodes[0],Nodes[1],Nodes[2],ElementId);
                    if (!edge)
                        throw std::runtime_error("Failed to add edge with given ElementId");
                    break;
                default:
                    throw std::runtime_error("Unknown node count, [2|3] are allowed"); //unknown edge type
            }
        }
        else {
            switch(Nodes.size()){
            case 2:
                edge = meshDS->AddEdge(Nodes[0],Nodes[1]);
                if (!edge)
                    throw std::runtime_error("Failed to add edge");
                break;
            case 3:
                edge = meshDS->AddEdge(Nodes[0],Nodes[1],Nodes[2]);
                if (!edge)
                    throw std::runtime_error("Failed to add edge");
                break;
            default:
                throw std::runtime_error("Unknown node count, [2|3] are allowed"); //unknown edge type
            }
        }
#if PY_MAJOR_VERSION >= 3
        return Py::new_reference_to(Py::Long(edge->GetID()));
#else
        return Py::new_reference_to(Py::Int(edge->GetID()));
#endif
    }
    PyErr_SetString(PyExc_TypeError, "addEdge accepts:\n"
        "-- int,int\n"
        "-- [2|3],[int]\n");
    return 0;
}
Exemplo n.º 7
0
PyObject* FemMeshPy::addVolume(PyObject *args)
{
    SMESH_Mesh* mesh = getFemMeshPtr()->getSMesh();
    SMESHDS_Mesh* meshDS = mesh->GetMeshDS();

    int n1,n2,n3,n4;
    if (PyArg_ParseTuple(args, "iiii",&n1,&n2,&n3,&n4))
    {
        try {
            const SMDS_MeshNode* node1 = meshDS->FindNode(n1);
            const SMDS_MeshNode* node2 = meshDS->FindNode(n2);
            const SMDS_MeshNode* node3 = meshDS->FindNode(n3);
            const SMDS_MeshNode* node4 = meshDS->FindNode(n4);
            if (!node1 || !node2 || !node3 || !node4)
                throw std::runtime_error("Failed to get node of the given indices");
            SMDS_MeshVolume* vol = meshDS->AddVolume(node1, node2, node3, node4);
            if (!vol)
                throw std::runtime_error("Failed to add volume");
            return Py::new_reference_to(Py::Int(vol->GetID()));
        }
        catch (const std::exception& e) {
            PyErr_SetString(Base::BaseExceptionFreeCADError, e.what());
            return 0;
        }
    }
    PyErr_Clear();

    PyObject *obj;
    int ElementId=-1;
    if (PyArg_ParseTuple(args, "O!|i", &PyList_Type, &obj, &ElementId))
    {
        Py::List list(obj);
        std::vector<const SMDS_MeshNode*> Nodes;
        for (Py::List::iterator it = list.begin(); it != list.end(); ++it) {
            Py::Int NoNr(*it);
            const SMDS_MeshNode* node = meshDS->FindNode(NoNr);
            if (!node)
                throw std::runtime_error("Failed to get node of the given indices");
            Nodes.push_back(node);
        }
        
        SMDS_MeshVolume* vol=0;
        if(ElementId != -1) {
            switch(Nodes.size()){
                case 4:
                    vol = meshDS->AddVolumeWithID(Nodes[0],Nodes[1],Nodes[2],Nodes[3],ElementId);
                    if (!vol)
                        throw std::runtime_error("Failed to add Tet4 volume");
                    break;
                case 8:
                    vol = meshDS->AddVolumeWithID(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],Nodes[6],Nodes[7],ElementId);
                    if (!vol)
                        throw std::runtime_error("Failed to add Tet10 volume");
                    break;
                case 10:
                    vol = meshDS->AddVolumeWithID(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],Nodes[6],Nodes[7],Nodes[8],Nodes[9],ElementId);
                    if (!vol)
                        throw std::runtime_error("Failed to add Tet10 volume");
                    break;

                default: throw std::runtime_error("Unknown node count, [4|5|6|8|10|13|18] are allowed"); //unknown face type
            }
        }else{
            switch(Nodes.size()){
                case 4:
                    vol = meshDS->AddVolume(Nodes[0],Nodes[1],Nodes[2],Nodes[3]);
                    if (!vol)
                        throw std::runtime_error("Failed to add Tet4 volume");
                    break;
                case 8:
                    vol = meshDS->AddVolume(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],Nodes[6],Nodes[7]);
                    if (!vol)
                        throw std::runtime_error("Failed to add Tet10 volume");
                    break;
                case 10:
                    vol = meshDS->AddVolume(Nodes[0],Nodes[1],Nodes[2],Nodes[3],Nodes[4],Nodes[5],Nodes[6],Nodes[7],Nodes[8],Nodes[9]);
                    if (!vol)
                        throw std::runtime_error("Failed to add Tet10 volume");
                    break;

                default: throw std::runtime_error("Unknown node count, [4|5|6|8|10|13|18] are allowed"); //unknown face type
            }

        }

        return Py::new_reference_to(Py::Int(vol->GetID()));

    }

    PyErr_SetString(PyExc_TypeError, "Line constructor accepts:\n"
        "-- empty parameter list\n"
        "-- Line\n"
        "-- Point, Point");
    return 0;

}
Exemplo n.º 8
0
PyObject* FemMeshPy::addFace(PyObject *args)
{
    SMESH_Mesh* mesh = getFemMeshPtr()->getSMesh();
    SMESHDS_Mesh* meshDS = mesh->GetMeshDS();

    int n1,n2,n3;
    if (PyArg_ParseTuple(args, "iii",&n1,&n2,&n3))
    {
        // old form, debrekadet
        try {
            const SMDS_MeshNode* node1 = meshDS->FindNode(n1);
            const SMDS_MeshNode* node2 = meshDS->FindNode(n2);
            const SMDS_MeshNode* node3 = meshDS->FindNode(n3);
            if (!node1 || !node2 || !node3)
                throw std::runtime_error("Failed to get node of the given indices");
            SMDS_MeshFace* face = meshDS->AddFace(node1, node2, node3);
            if (!face)
                throw std::runtime_error("Failed to add face");
            return Py::new_reference_to(Py::Int(face->GetID()));
        }
        catch (const std::exception& e) {
            PyErr_SetString(Base::BaseExceptionFreeCADError, e.what());
            return 0;
        }
    }
    PyErr_Clear();

    PyObject *obj;
    int ElementId=-1;
    if (PyArg_ParseTuple(args, "O!|i", &PyList_Type, &obj, &ElementId))
    {
        Py::List list(obj);
        std::vector<const SMDS_MeshNode*> Nodes;
        for (Py::List::iterator it = list.begin(); it != list.end(); ++it) {
            Py::Int NoNr(*it);
            const SMDS_MeshNode* node = meshDS->FindNode(NoNr);
            if (!node)
                throw std::runtime_error("Failed to get node of the given indices");
            Nodes.push_back(node);
        }
        
        SMDS_MeshFace* face=0;
        switch(Nodes.size()){
            case 3:
                face = meshDS->AddFace(Nodes[0],Nodes[1],Nodes[2]);
                if (!face)
                    throw std::runtime_error("Failed to add triangular face");
                break;

            default: throw std::runtime_error("Unknown node count, [3|4|6|8] are allowed"); //unknown face type
        }

        return Py::new_reference_to(Py::Int(face->GetID()));

    }

    PyErr_SetString(PyExc_TypeError, "Line constructor accepts:\n"
        "-- empty parameter list\n"
        "-- Line\n"
        "-- Point, Point");
    return 0;

}