Added operator + support for dlib.rectangle.

tools/python/src/rectangles.cpp

@@ -68,6 +68,30 @@ string print_rectangle_repr(const rect_type& r)
     return sout.str();
 }
 
+rectangle add_point_to_rect(const rectangle& r, const point& p)
+{
+    return r + p;
+}
+
+rectangle add_rect_to_rect(const rectangle& r, const rectangle& p)
+{
+    return r + p;
+}
+
+rectangle& iadd_point_to_rect(rectangle& r, const point& p)
+{
+    r += p;
+    return r;
+}
+
+rectangle& iadd_rect_to_rect(rectangle& r, const rectangle& p)
+{
+    r += p;
+    return r;
+}
+
+
+
 // ----------------------------------------------------------------------------------------
 
 void bind_rectangles(py::module& m)
@@ -92,6 +116,10 @@ void bind_rectangles(py::module& m)
         .def("intersect", &::intersect<type>, py::arg("rectangle"))
         .def("__str__", &::print_rectangle_str<type>)
         .def("__repr__", &::print_rectangle_repr<type>)
+        .def("__add__", &::add_point_to_rect)
+        .def("__add__", &::add_rect_to_rect)
+        .def("__iadd__", &::iadd_point_to_rect)
+        .def("__iadd__", &::iadd_rect_to_rect)
         .def(py::self == py::self)
         .def(py::self != py::self)
         .def(py::pickle(&getstate<type>, &setstate<type>));