From 70347a6d3c1768a6cbd9b41b6a69be3968388176 Mon Sep 17 00:00:00 2001
From: Christopher Lackner <clackner@cerbsim.com>
Date: Tue, 29 Sep 2020 18:57:56 +0200
Subject: [PATCH] tuple implicitly convertible to Pnt and Vec

---
 libsrc/meshing/python_mesh.cpp | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/libsrc/meshing/python_mesh.cpp b/libsrc/meshing/python_mesh.cpp
index 5b2ea5c1..c1cbb0c5 100644
--- a/libsrc/meshing/python_mesh.cpp
+++ b/libsrc/meshing/python_mesh.cpp
@@ -179,6 +179,11 @@ DLL_HEADER void ExportNetgenMeshing(py::module &m)
 
   py::class_<Point<3>> (m, "Point3d")
     .def(py::init<double,double,double>())
+    .def(py::init([](py::tuple p)
+    {
+      return Point<3> { p[0].cast<double>(), p[1].cast<double>(),
+        p[2].cast<double>() };
+    }))
     .def ("__str__", &ToString<Point<3>>)
     .def(py::self-py::self)
     .def(py::self+Vec<3>())
@@ -186,6 +191,8 @@ DLL_HEADER void ExportNetgenMeshing(py::module &m)
     .def("__getitem__", [](Point<2>& self, int index) { return self[index]; })
     ;
 
+  py::implicitly_convertible<py::tuple, Point<3>>();
+
   m.def("Pnt", [](double x, double y, double z)
                { return global_trafo(Point<3>(x,y,z)); });
   m.def("Pnt", [](double x, double y) { return Point<2>(x,y); });
@@ -218,6 +225,11 @@ DLL_HEADER void ExportNetgenMeshing(py::module &m)
 
   py::class_<Vec<3>> (m, "Vec3d")
     .def(py::init<double,double,double>())
+    .def(py::init([](py::tuple v)
+    {
+      return Vec<3> { v[0].cast<double>(), v[1].cast<double>(),
+        v[2].cast<double>() };
+    }))
     .def ("__str__", &ToString<Vec<3>>)
     .def(py::self==py::self)
     .def(py::self+py::self)
@@ -230,6 +242,8 @@ DLL_HEADER void ExportNetgenMeshing(py::module &m)
     .def("__len__", [](Vec<3>& /*unused*/) { return 3; })
     ;
 
+  py::implicitly_convertible<py::tuple, Vec<3>>();
+
   m.def ("Vec", FunctionPointer
            ([] (double x, double y, double z) { return global_trafo(Vec<3>(x,y,z)); }));
   m.def("Vec", [](py::array_t<double> np_array)