Python source

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@1171 fdac6126-5c0c-442c-9429-916003d36597

src/Python/Bindings.cc

+#include "Python/Bindings.hh"
+#include "Python/Vector.hh"
+#include "Python/Mesh.hh"
+#include "Python/Iterator.hh"
+#include "Python/Circulator.hh"
+#include "Python/PropertyManager.hh"
+#include "Python/InputOutput.hh"
+
+namespace OpenMesh {
+namespace Python {
+
+/**
+ * Expose mesh items to %Python.
+ */
+void expose_items() {
+	class_<ArrayItems::Vertex>("Vertex");
+	class_<ArrayItems::Halfedge>("Halfedge");
+	class_<ArrayItems::Edge>("Edge");
+	class_<ArrayItems::Face>("Face");
+}
+
+/**
+ * Expose item and property handles to %Python.
+ */
+void expose_handles() {
+	class_<BaseHandle>("BaseHandle", init<optional<int> >())
+		.def("idx", &BaseHandle::idx)
+		.def("is_valid", &BaseHandle::is_valid)
+		.def("reset", &BaseHandle::reset)
+		.def("invalidate", &BaseHandle::invalidate)
+		.def(self == self)
+		.def(self != self)
+		.def(self < self)
+		;
+
+	class_<VertexHandle, bases<BaseHandle> >("VertexHandle", init<optional<int> >());
+	class_<HalfedgeHandle, bases<BaseHandle> >("HalfedgeHandle", init<optional<int> >());
+	class_<EdgeHandle, bases<BaseHandle> >("EdgeHandle", init<optional<int> >());
+	class_<FaceHandle, bases<BaseHandle> >("FaceHandle", init<optional<int> >());
+
+	class_<BasePropHandleT<object>, bases<BaseHandle> >("BasePropHandle", init<optional<int> >());
+
+	class_<VPropHandleT<object>, bases<BasePropHandleT<object> > >("VPropHandle", init<optional<int> >())
+		.def(init<const BasePropHandleT<object>&>());
+	class_<HPropHandleT<object>, bases<BasePropHandleT<object> > >("HPropHandle", init<optional<int> >())
+		.def(init<const BasePropHandleT<object>&>());
+	class_<EPropHandleT<object>, bases<BasePropHandleT<object> > >("EPropHandle", init<optional<int> >())
+		.def(init<const BasePropHandleT<object>&>());
+	class_<FPropHandleT<object>, bases<BasePropHandleT<object> > >("FPropHandle", init<optional<int> >())
+		.def(init<const BasePropHandleT<object>&>());
+	class_<MPropHandleT<object>, bases<BasePropHandleT<object> > >("MPropHandle", init<optional<int> >())
+		.def(init<const BasePropHandleT<object>&>());
+}
+
+
+/**
+ * Expose the StatusBits enum and StatusInfo class to %Python.
+ */
+void expose_status_bits_and_info() {
+	using OpenMesh::Attributes::StatusBits;
+	using OpenMesh::Attributes::StatusInfo;
+
+	enum_<StatusBits>("StatusBits")
+		.value("DELETED", OpenMesh::Attributes::DELETED)
+		.value("LOCKED", OpenMesh::Attributes::LOCKED)
+		.value("SELECTED", OpenMesh::Attributes::SELECTED)
+		.value("HIDDEN", OpenMesh::Attributes::HIDDEN)
+		.value("FEATURE", OpenMesh::Attributes::FEATURE)
+		.value("TAGGED", OpenMesh::Attributes::TAGGED)
+		.value("TAGGED2", OpenMesh::Attributes::TAGGED2)
+		.value("FIXEDNONMANIFOLD", OpenMesh::Attributes::FIXEDNONMANIFOLD)
+		.value("UNUSED", OpenMesh::Attributes::UNUSED)
+		;
+
+	class_<StatusInfo>("StatusInfo")
+		.def("deleted", &StatusInfo::deleted)
+		.def("set_deleted", &StatusInfo::set_deleted)
+		.def("locked", &StatusInfo::locked)
+		.def("set_locked", &StatusInfo::set_locked)
+		.def("selected", &StatusInfo::selected)
+		.def("set_selected", &StatusInfo::set_selected)
+		.def("hidden", &StatusInfo::hidden)
+		.def("set_hidden", &StatusInfo::set_hidden)
+		.def("feature", &StatusInfo::feature)
+		.def("set_feature", &StatusInfo::set_feature)
+		.def("tagged", &StatusInfo::tagged)
+		.def("set_tagged", &StatusInfo::set_tagged)
+		.def("tagged2", &StatusInfo::tagged2)
+		.def("set_tagged2", &StatusInfo::set_tagged2)
+		.def("fixed_nonmanifold", &StatusInfo::fixed_nonmanifold)
+		.def("set_fixed_nonmanifold", &StatusInfo::set_fixed_nonmanifold)
+		.def("bits", &StatusInfo::bits)
+		.def("set_bits", &StatusInfo::set_bits)
+		.def("is_bit_set", &StatusInfo::is_bit_set)
+		.def("set_bit", &StatusInfo::set_bit)
+		.def("unset_bit", &StatusInfo::unset_bit)
+		.def("change_bit", &StatusInfo::change_bit)
+		;
+}
+
+BOOST_PYTHON_MODULE(openmesh) {
+	expose_items();
+	expose_handles();
+	expose_status_bits_and_info();
+
+	expose_vec<float,  2>("Vec2f");
+	expose_vec<float,  3>("Vec3f");
+	expose_vec<float,  4>("Vec4f");
+	expose_vec<double, 2>("Vec2d");
+	expose_vec<double, 3>("Vec3d");
+	expose_vec<double, 4>("Vec4d");
+
+	expose_mesh<PolyMesh>("PolyMesh");
+	expose_mesh<TriMesh>("TriMesh");
+
+	expose_iterator<OpenMesh::PolyConnectivity::VertexIter, &OpenMesh::ArrayKernel::n_vertices>("VertexIter");
+	expose_iterator<OpenMesh::PolyConnectivity::HalfedgeIter, &OpenMesh::ArrayKernel::n_halfedges>("HalfedgeIter");
+	expose_iterator<OpenMesh::PolyConnectivity::EdgeIter, &OpenMesh::ArrayKernel::n_edges>("EdgeIter");
+	expose_iterator<OpenMesh::PolyConnectivity::FaceIter, &OpenMesh::ArrayKernel::n_faces>("FaceIter");
+
+	expose_circulator<OpenMesh::PolyConnectivity::VertexVertexIter, VertexHandle>("VertexVertexIter");
+	expose_circulator<OpenMesh::PolyConnectivity::VertexIHalfedgeIter, VertexHandle>("VertexIHalfedgeIter");
+	expose_circulator<OpenMesh::PolyConnectivity::VertexOHalfedgeIter, VertexHandle>("VertexOHalfedgeIter");
+	expose_circulator<OpenMesh::PolyConnectivity::VertexEdgeIter, VertexHandle>("VertexEdgeIter");
+	expose_circulator<OpenMesh::PolyConnectivity::VertexFaceIter, VertexHandle>("VertexFaceIter");
+
+	expose_circulator<OpenMesh::PolyConnectivity::FaceVertexIter, FaceHandle>("FaceVertexIter");
+	expose_circulator<OpenMesh::PolyConnectivity::FaceHalfedgeIter, FaceHandle>("FaceHalfedgeIter");
+	expose_circulator<OpenMesh::PolyConnectivity::FaceEdgeIter, FaceHandle>("FaceEdgeIter");
+	expose_circulator<OpenMesh::PolyConnectivity::FaceFaceIter, FaceHandle>("FaceFaceIter");
+
+	expose_circulator<OpenMesh::PolyConnectivity::HalfedgeLoopIter, HalfedgeHandle>("HalfedgeLoopIter");
+
+	typedef IteratorWrapperT<PolyConnectivity::VertexIter, &ArrayKernel::n_vertices> VertexIterWrapper;
+	typedef IteratorWrapperT<PolyConnectivity::HalfedgeIter, &ArrayKernel::n_halfedges> HalfedgeIterWrapper;
+	typedef IteratorWrapperT<PolyConnectivity::EdgeIter, &ArrayKernel::n_edges> EdgeIterWrapper;
+	typedef IteratorWrapperT<PolyConnectivity::FaceIter, &ArrayKernel::n_faces> FaceIterWrapper;
+
+	expose_property_manager<VPropHandleT<object>, VertexHandle, VertexIterWrapper>("VPropertyManager");
+	expose_property_manager<HPropHandleT<object>, HalfedgeHandle, HalfedgeIterWrapper>("HPropertyManager");
+	expose_property_manager<EPropHandleT<object>, EdgeHandle, EdgeIterWrapper>("EPropertyManager");
+	expose_property_manager<FPropHandleT<object>, FaceHandle, FaceIterWrapper>("FPropertyManager");
+
+	expose_io();
+}
+
+} // namespace Python
+} // namespace OpenMesh

src/Python/Bindings.hh

+/** @file */
+
+#ifndef OPENMESH_PYTHON_BINDINGS_HH
+#define OPENMESH_PYTHON_BINDINGS_HH
+
+#include <boost/python.hpp>
+#include <boost/python/return_internal_reference.hpp>
+#include <boost/python/reference_existing_object.hpp>
+#include <boost/python/copy_const_reference.hpp>
+
+#include "OpenMesh/Core/IO/MeshIO.hh"
+#include "OpenMesh/Core/Mesh/TriMesh_ArrayKernelT.hh"
+#include "OpenMesh/Core/Mesh/PolyMesh_ArrayKernelT.hh"
+
+using namespace boost::python;
+
+namespace OpenMesh {
+
+/**
+ * This namespace contains classes and functions that are used to expose
+ * %OpenMesh to %Python.
+ */
+namespace Python {
+
+/**
+ * Return value policy for functions that return references to objects that are
+ * managed by %OpenMesh.
+ */
+#define OPENMESH_PYTHON_DEFAULT_POLICY return_value_policy<copy_const_reference>()
+
+struct MeshTraits : public OpenMesh::DefaultTraits {
+	/** Use double precision points */
+	typedef OpenMesh::Vec3d Point;
+
+	/** Use double precision normals */
+	typedef OpenMesh::Vec3d Normal;
+
+	/** Use RGBA colors */
+	typedef OpenMesh::Vec4f Color;
+};
+
+typedef OpenMesh::TriMesh_ArrayKernelT<MeshTraits> TriMesh;
+typedef OpenMesh::PolyMesh_ArrayKernelT<MeshTraits> PolyMesh;
+
+} // namespace OpenMesh
+} // namespace Python
+
+#endif

src/Python/CMakeLists.txt

+IF(NOT DEFINED OPENMESH_BUILD_PYTHON_BINDINGS)
+	SET(OPENMESH_BUILD_PYTHON_BINDINGS TRUE CACHE BOOL "Enable or disable building the Python Bindings.")
+ENDIF()
+
+IF(NOT DEFINED OPENMESH_BUILD_PYTHON_UNIT_TESTS)
+	SET(OPENMESH_BUILD_PYTHON_UNIT_TESTS FALSE CACHE BOOL "Enable or disable building the Python unit tests.")
+ENDIF()
+
+IF(NOT DEFINED OPENMESH_PYTHON_VERSION)
+	SET(OPENMESH_PYTHON_VERSION "2.7" CACHE STRING "Choose the Python version that is used to build the Python Bindings.")
+ENDIF()
+
+IF(OPENMESH_BUILD_PYTHON_BINDINGS)
+	# Look for the python libs
+	MESSAGE(STATUS "Looking for Python")
+	FIND_PACKAGE(PythonLibs ${OPENMESH_PYTHON_VERSION} QUIET)
+
+	IF(PYTHONLIBS_FOUND)
+		MESSAGE(STATUS "Looking for Python -- found")
+
+		# Determine the name of the python component
+		STRING(REGEX MATCH "^[0-9]+\\.[0-9]+" PYTHON_VERSION ${PYTHONLIBS_VERSION_STRING})
+		STRING(REGEX REPLACE "\\." "" PYTHON_VERSION ${PYTHON_VERSION})
+
+		SET(BOOST_PYTHON_COMPONENT "python-py${PYTHON_VERSION}")
+
+		# Check known boost versions for the python component
+		SET(BOOST_KNOWN_VERSIONS
+			"1.56.0" "1.56" "1.55.0" "1.55" "1.54.0" "1.54"
+			"1.53.0" "1.53" "1.52.0" "1.52" "1.51.0" "1.51"
+			"1.50.0" "1.50" "1.49.0" "1.49" "1.48.0" "1.48" "1.47.0" "1.47" "1.46.1"
+			"1.46.0" "1.46" "1.45.0" "1.45" "1.44.0" "1.44" "1.43.0" "1.43" "1.42.0" "1.42"
+			"1.41.0" "1.41" "1.40.0" "1.40" "1.39.0" "1.39" "1.38.0" "1.38" "1.37.0" "1.37"
+			"1.36.1" "1.36.0" "1.36" "1.35.1" "1.35.0" "1.35" "1.34.1" "1.34.0"
+			"1.34" "1.33.1" "1.33.0" "1.33"
+		)
+
+		MESSAGE(STATUS "Looking for Boost Python")
+
+		# Look for version specific python component
+		FOREACH(VERSION ${BOOST_KNOWN_VERSIONS})
+			IF(Boost_FOUND)
+				BREAK()
+			ENDIF()
+			FIND_PACKAGE(Boost ${VERSION} EXACT QUIET COMPONENTS ${BOOST_PYTHON_COMPONENT})
+		ENDFOREACH()
+
+		# Look for any other python component
+		FOREACH(VERSION ${BOOST_KNOWN_VERSIONS})
+			IF(Boost_FOUND)
+				BREAK()
+			ENDIF()
+			FIND_PACKAGE(Boost ${VERSION} EXACT QUIET COMPONENTS python)
+		ENDFOREACH()
+
+		IF(Boost_FOUND)
+			MESSAGE(STATUS "Looking for Boost Python -- found")
+
+			MESSAGE(STATUS "Checking the Boost Python configuration")
+
+			TRY_COMPILE(
+				COMPILE_WORKS
+				${CMAKE_CURRENT_BINARY_DIR}
+				${CMAKE_CURRENT_SOURCE_DIR}/Example/
+				Example
+				CMAKE_FLAGS
+					"-DINCLUDE_DIRECTORIES:STRING=${PYTHON_INCLUDE_DIRS};${Boost_INCLUDE_DIRS}"
+					"-DLINK_LIBRARIES:STRING=${PYTHON_LIBRARIES};${Boost_LIBRARIES}"
+			)
+
+			IF(COMPILE_WORKS)
+				# Look for the python interpreter to check if the example works
+				FIND_PACKAGE(PythonInterp ${PYTHONLIBS_VERSION_STRING} QUIET)
+
+				IF(PYTHONINTERP_FOUND)
+					EXECUTE_PROCESS(
+						COMMAND ${PYTHON_EXECUTABLE} -c "from example import *; greet(); planet = World()"
+						WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+						RESULT_VARIABLE PYTHON_WORKS
+						OUTPUT_QUIET
+						ERROR_QUIET
+					)
+
+					IF(PYTHON_WORKS EQUAL 0)
+
+						### EVERYTHING WORKS ###
+
+						MESSAGE(STATUS "Checking the Boost Python configuration -- done")
+						
+						IF("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" AND ${Boost_VERSION} VERSION_LESS 105600)
+							MESSAGE("There are known issues with Clang and Boost Python 1.55 and below.")
+							MESSAGE("Please consider updating Boost Python.")
+						ENDIF()
+
+						SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/Build/python/)
+
+						FILE(GLOB SOURCES *.cc *hh)
+						ADD_LIBRARY(openmesh SHARED ${SOURCES})
+
+						INCLUDE_DIRECTORIES(${PYTHON_INCLUDE_DIRS} ${Boost_INCLUDE_DIRS} ../)
+
+						TARGET_LINK_LIBRARIES(
+							openmesh
+							OpenMeshCore
+							OpenMeshTools
+							${Boost_LIBRARIES}
+							${PYTHON_LIBRARIES}
+						)
+
+						SET_TARGET_PROPERTIES(
+							openmesh
+							PROPERTIES
+							PREFIX ""
+							DEBUG_POSTFIX ""
+							RELEASE_POSTFIX ""
+						)
+
+						IF(APPLE)
+							SET_TARGET_PROPERTIES(openmesh PROPERTIES SUFFIX ".so")
+						ENDIF()
+
+						IF(WIN32)
+							SET_TARGET_PROPERTIES(openmesh PROPERTIES SUFFIX ".pyd")
+							SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /bigobj")
+
+							SET(OUTPUTS openmesh.exp openmesh.lib openmesh.pyd)
+
+							FOREACH(FILE ${OUTPUTS})
+								ADD_CUSTOM_COMMAND(
+									TARGET openmesh POST_BUILD
+									COMMAND ${CMAKE_COMMAND} -E copy
+										${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/${FILE}
+										${CMAKE_LIBRARY_OUTPUT_DIRECTORY}
+								)
+							ENDFOREACH()
+						ENDIF()
+
+						IF(OPENMESH_BUILD_PYTHON_UNIT_TESTS)
+							SET(UNITTEST_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/Python-Unittests/)
+
+							# Copy unit tests
+							FILE(GLOB UNITTESTS Unittests/*.py)
+							FOREACH(TEST ${UNITTESTS})
+								FILE(COPY ${TEST} DESTINATION ${UNITTEST_OUTPUT_DIRECTORY})
+							ENDFOREACH()
+
+							# Copy test files
+							FILE(GLOB TESTFILES ${PROJECT_SOURCE_DIR}/src/Unittests/TestFiles/*(.off|.obj|.mtl|.stl|.ply|.om))
+							FOREACH(FILE ${TESTFILES})
+								FILE(COPY ${FILE} DESTINATION ${UNITTEST_OUTPUT_DIRECTORY})
+							ENDFOREACH()
+
+							# Copy library
+							IF(WIN32)
+								FOREACH(FILE ${OUTPUTS})
+									ADD_CUSTOM_COMMAND(
+										TARGET openmesh POST_BUILD
+										COMMAND ${CMAKE_COMMAND} -E copy
+											${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/${FILE}
+											${UNITTEST_OUTPUT_DIRECTORY}
+									)
+								ENDFOREACH()
+							ELSE()
+								ADD_CUSTOM_COMMAND(
+									TARGET openmesh POST_BUILD
+									COMMAND ${CMAKE_COMMAND} -E copy
+										${CMAKE_BINARY_DIR}/Build/python/openmesh.so
+										${UNITTEST_OUTPUT_DIRECTORY}
+								)
+							ENDIF()
+
+							ADD_TEST(
+								NAME Python_tests
+								WORKING_DIRECTORY ${UNITTEST_OUTPUT_DIRECTORY}
+								COMMAND ${PYTHON_EXECUTABLE} -m unittest discover --verbose
+							)
+						ENDIF()
+
+					ELSE()
+						MESSAGE("Checking the Boost Python configuration failed!")
+						MESSAGE("Reason: An error occurred while running a small Boost Python test project.")
+						MESSAGE("Make sure that your Python and Boost Python libraries match.")
+						MESSAGE("Skipping Python Bindings.")
+					ENDIF()
+				ELSE()
+					MESSAGE("Checking the Boost Python configuration failed!")
+					MESSAGE("Reason: Python Interpreter ${PYTHONLIBS_VERSION_STRING} not found.")
+					MESSAGE("Skipping Python Bindings.")
+				ENDIF()
+			ELSE()
+				MESSAGE("Checking the Boost Python configuration failed!")
+				MESSAGE("Reason: Building a small Boost Python test project failed.")
+				MESSAGE("Make sure that your Python and Boost Python libraries match.")
+				MESSAGE("Skipping Python Bindings.")
+			ENDIF()
+		ELSE()
+			MESSAGE("Boost Python not found! Skipping Python Bindings.")
+		ENDIF()
+	ELSE()
+		MESSAGE("Python not found! Skipping Python Bindings.")
+	ENDIF()
+ENDIF()

src/Python/Circulator.hh

+#ifndef OPENMESH_PYTHON_CIRCULATOR_HH
+#define OPENMESH_PYTHON_CIRCULATOR_HH
+
+#include "Python/Bindings.hh"
+
+namespace OpenMesh {
+namespace Python {
+
+/**
+ * Wrapper for circulators.
+ *
+ * This class template is used to wrap circulators for %Python. It implements
+ * %Python's iterator protocol (the magic methods \_\_iter\_\_ and
+ * \_\_next\_\_).
+ *
+ * @tparam Circulator A circulator type.
+ */
+template<class Circulator, class CenterEntityHandle>
+class CirculatorWrapperT {
+	public:
+
+		/**
+		 * Constructor
+		 *
+		 * @param _mesh The mesh that contains the items to iterate over.
+		 * @param _center The handle to the center item.
+		 */
+		CirculatorWrapperT(PolyMesh& _mesh, CenterEntityHandle _center) :
+			circulator_(_mesh, _center) {
+		}
+
+		/**
+		 * Constructor
+		 *
+		 * @param _mesh The mesh that contains the items to iterate over.
+		 * @param _center The handle to the center item.
+		 */
+		CirculatorWrapperT(TriMesh& _mesh, CenterEntityHandle _center) :
+			circulator_(_mesh, _center) {
+		}
+
+		/**
+		 * Implementation of %Python's \_\_iter\_\_ magic method.
+		 *
+		 * @return This circulator.
+		 */
+		CirculatorWrapperT iter() const {
+			return *this;
+		}
+
+		/**
+		 * Implementation of %Python's \_\_next\_\_ magic method.
+		 *
+		 * @return The next item. Raises a %Python StopIteration exception if
+		 * there are no more items.
+		 */
+		typename Circulator::value_type next() {
+			if (circulator_.is_valid()) {
+				typename Circulator::value_type res = *circulator_;
+				++circulator_;
+				return res;
+			}
+			else {
+				PyErr_SetString(PyExc_StopIteration, "No more data.");
+				boost::python::throw_error_already_set();
+			}
+			return typename Circulator::value_type();
+		}
+
+	private:
+		Circulator circulator_;
+};
+
+/**
+ * Expose a circulator type to %Python.
+ *
+ * @tparam Circulator A circulator type.
+ *
+ * @param _name The name of the circulator type to be exposed.
+ *
+ * @note Circulators are wrapped by CirculatorWrapperT before they are exposed
+ * to %Python, i.e. they are not exposed directly. This means that circulators
+ * that are passed from %Python to C++ are instances of CirculatorWrapperT.
+ */
+template<class Circulator, class CenterEntityHandle>
+void expose_circulator(const char *_name) {
+	class_<CirculatorWrapperT<Circulator, CenterEntityHandle> >(_name, init<TriMesh&, CenterEntityHandle>())
+		.def(init<PolyMesh&, CenterEntityHandle>())
+		.def("__iter__", &CirculatorWrapperT<Circulator, CenterEntityHandle>::iter)
+		.def("__next__", &CirculatorWrapperT<Circulator, CenterEntityHandle>::next)
+		.def("next", &CirculatorWrapperT<Circulator, CenterEntityHandle>::next)
+		;
+}
+
+} // namespace OpenMesh
+} // namespace Python
+
+#endif

src/Python/Example/CMakeLists.txt

+CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
+PROJECT(Example)
+
+FILE(GLOB SOURCES *.cc *hh)
+
+ADD_LIBRARY(example SHARED ${SOURCES})
+
+INCLUDE_DIRECTORIES(${INCLUDE_DIRECTORIES})
+
+TARGET_LINK_LIBRARIES(example ${LINK_LIBRARIES})
+
+SET_TARGET_PROPERTIES(
+	example
+	PROPERTIES
+	PREFIX ""
+	DEBUG_POSTFIX ""
+	RELEASE_POSTFIX ""
+)
+
+IF(APPLE)
+	SET_TARGET_PROPERTIES(example PROPERTIES SUFFIX ".so")
+ENDIF()
+
+IF(WIN32)
+	SET_TARGET_PROPERTIES(example PROPERTIES SUFFIX ".pyd")
+	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /bigobj")
+ENDIF()

src/Python/Example/Example.cc

+#include <boost/python.hpp>
+
+char const * greet() {
+	return "hello, world";
+}
+
+struct World {
+	void set(std::string msg) { this->msg = msg; }
+	std::string greet() { return msg; }
+	std::string msg;
+};
+
+BOOST_PYTHON_MODULE(example) {
+	using namespace boost::python;
+	
+	def("greet", greet);
+	
+	class_<World>("World")
+		.def("greet", &World::greet)
+		.def("set", &World::set)
+	;
+}

src/Python/InputOutput.hh

+#ifndef OPENMESH_PYTHON_INPUTOUTPUT_HH
+#define OPENMESH_PYTHON_INPUTOUTPUT_HH
+
+#include "Python/Bindings.hh"
+
+namespace OpenMesh {
+namespace Python {
+
+const IO::Options::Flag FLAG_DEFAULT        = IO::Options::Default;
+const IO::Options::Flag FLAG_BINARY         = IO::Options::Binary;
+const IO::Options::Flag FLAG_MSB            = IO::Options::MSB;
+const IO::Options::Flag FLAG_LSB            = IO::Options::LSB;
+const IO::Options::Flag FLAG_SWAP           = IO::Options::Swap;
+const IO::Options::Flag FLAG_VERTEXNORMAL   = IO::Options::VertexNormal;
+const IO::Options::Flag FLAG_VERTEXCOLOR    = IO::Options::VertexColor;
+const IO::Options::Flag FLAG_VERTEXTEXCOORD = IO::Options::VertexTexCoord;
+const IO::Options::Flag FLAG_EDGECOLOR      = IO::Options::EdgeColor;
+const IO::Options::Flag FLAG_FACENORMAL     = IO::Options::FaceNormal;
+const IO::Options::Flag FLAG_FACECOLOR      = IO::Options::FaceColor;
+const IO::Options::Flag FLAG_FACETEXCOORD   = IO::Options::FaceTexCoord;
+const IO::Options::Flag FLAG_COLORALPHA     = IO::Options::ColorAlpha;
+const IO::Options::Flag FLAG_COLORFLOAT     = IO::Options::ColorFloat;
+
+BOOST_PYTHON_FUNCTION_OVERLOADS(read_mesh_overloads, IO::read_mesh, 3, 4)
+BOOST_PYTHON_FUNCTION_OVERLOADS(write_mesh_overloads, IO::write_mesh, 2, 4)
+
+/**
+ * Expose the input/output functions and options to Python.
+ */
+void expose_io() {
+
+	//======================================================================
+	//  Functions
+	//======================================================================
+
+	bool (*read_mesh_poly        )(PolyMesh&, const std::string&                    ) = &IO::read_mesh;
+	bool (*read_mesh_poly_options)(PolyMesh&, const std::string&, IO::Options&, bool) = &IO::read_mesh;
+	bool (*read_mesh_tri         )(TriMesh&,  const std::string&                    ) = &IO::read_mesh;
+	bool (*read_mesh_tri_options )(TriMesh&,  const std::string&, IO::Options&, bool) = &IO::read_mesh;
+
+	bool (*write_mesh_poly)(const PolyMesh&, const std::string&, IO::Options, std::streamsize) = &IO::write_mesh;
+	bool (*write_mesh_tri )(const TriMesh&,  const std::string&, IO::Options, std::streamsize) = &IO::write_mesh;
+
+	def("read_mesh", read_mesh_poly);
+	def("read_mesh", read_mesh_poly_options, read_mesh_overloads());
+	def("read_mesh", read_mesh_tri);
+	def("read_mesh", read_mesh_tri_options,