[python] add wrapper for precision class

frackit/python/CMakeLists.txt

 add_subdirectory(common)
+add_subdirectory(precision)

frackit/python/precision/CMakeLists.txt

+install(FILES
+precision.hh
+DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/frackit/python/precision)

frackit/python/precision/precision.hh

+// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+// vi: set et ts=4 sw=4 sts=4:
+/*****************************************************************************
+ *   See the file COPYING for full copying permissions.                      *
+ *                                                                           *
+ *   This program is free software: you can redistribute it and/or modify    *
+ *   it under the terms of the GNU General Public License as published by    *
+ *   the Free Software Foundation, either version 3 of the License, or       *
+ *   (at your option) any later version.                                     *
+ *                                                                           *
+ *   This program is distributed in the hope that it will be useful,         *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of          *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the            *
+ *   GNU General Public License for more details.                            *
+ *                                                                           *
+ *   You should have received a copy of the GNU General Public License       *
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>.   *
+ *****************************************************************************/
+#ifndef FRACKIT_PYTHON_PRECISION_HH
+#define FRACKIT_PYTHON_PRECISION_HH
+
+#include <pybind11/pybind11.h>
+#include <frackit/precision/precision.hh>
+
+namespace Frackit::Python {
+
+template<class ctype>
+void registerPrecision(pybind11::module& module)
+{
+    pybind11::class_<Precision<ctype>> cls(module, "Precision");
+    cls.def_static("confusion", &Precision<ctype>::confusion, "tolerance value for distance comparisons");
+    cls.def_static("angular", &Precision<ctype>::angular, "tolerance value for angle comparisons");
+}
+
+} // end namespace Frackit::Python
+
+#endif // FRACKIT_PYTHON_PRECISION_HH