[python] add api for piecewise_polynomial and piecewise_bezier for compute_derivative

python/curves_python.cpp

@@ -415,6 +415,7 @@ namespace curves
       .def("dim", &piecewise_polynomial_curve_t::dim)
       .def("__call__", &piecewise_polynomial_curve_t::operator(),"Evaluate the curve at the given time.")
       .def("derivate", &piecewise_polynomial_curve_t::derivate,"Evaluate the derivative of order N of curve at time t.",args("self","t","N"))
+      .def("compute_derivate",&piecewise_polynomial_curve_t::compute_derivate,"Return a piecewise_polynomial curve which is the derivate of this.",args("self","order"))
       .def("append", &piecewise_polynomial_curve_t::add_curve,
            "Add a new curve to piecewise curve, which should be defined in T_{min},T_{max}] "
            "where T_{min} is equal toT_{max} of the actual piecewise curve.")
@@ -435,6 +436,7 @@ namespace curves
       .def("dim", &piecewise_bezier_curve_t::dim)
       .def("__call__", &piecewise_bezier_curve_t::operator())
       .def("derivate", &piecewise_bezier_curve_t::derivate)
+      .def("compute_derivate",&piecewise_polynomial_curve_t::compute_derivate,"Return a piecewise_polynomial curve which is the derivate of this.",args("self","order"))
       .def("add_curve", &piecewise_bezier_curve_t::add_curve)
       .def("is_continuous", &piecewise_bezier_curve_t::is_continuous)
       .def("saveAsText", &piecewise_bezier_curve_t::saveAsText<piecewise_bezier_curve_t>,bp::args("filename"),"Saves *this inside a text file.")