switched to MatrixXd for all wrappers, updated pybind11

python/python.cpp

@@ -3,6 +3,30 @@
 #include <string>
 #include <fstream>
 
+void assert_is_VectorXd(const std::string name, const Eigen::MatrixXd& v)
+{
+  if (v.cols() != 1)
+    throw std::runtime_error(name + " must be a column vector.");
+}
+
+void assert_is_RowVectorXd(const std::string name, const Eigen::MatrixXd& v)
+{
+  if (v.rows() != 1)
+    throw std::runtime_error(name + " must be a row vector.");
+}
+
+void assert_is_Vector3d(const std::string name, const Eigen::MatrixXd& v)
+{
+  if ((v.cols() != 1) || (v.rows() != 3))
+    throw std::runtime_error(name + " must be a column vector with 3 entries.");
+}
+
+void assert_is_RowVector3d(const std::string name, const Eigen::MatrixXd& v)
+{
+  if ((v.cols() != 3) || (v.rows() != 1))
+    throw std::runtime_error(name + " must be a row vector with 3 entries.");
+}
+
 extern void python_export_vector(py::module &);
 extern void python_export_igl(py::module &);
 extern void python_export_igl_viewer(py::module &);