private void InitializeOnMainThread()
{
bool isWindows = RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
if (!PythonEngine.IsInitialized)
{
char pathSplitChar = isWindows ? ';' : ':';
logger.LogInformation("Initializing Python3");
if (!isWindows)
{
var pythonPathEntries = PythonEngine.PythonPath.Split(pathSplitChar).ToList();
foreach (var path in LINUX_PYTHON3_PATHS)
{
var libPath = Path.GetFullPath(path);
if (Directory.Exists(libPath) && !pythonPathEntries.Contains(libPath))
{
pythonPathEntries.Add(libPath);
}
}
PythonEngine.PythonPath = string.Join(pathSplitChar, pythonPathEntries);
}
else
{
// on window for development use the defult PythonPath
// Note: In order to test local python-libs you can manually add the prj/lib/python path
// to the PYTHON_PATH environment variable..
}
logger.LogInformation("Python3.ProgramName: " + PythonEngine.ProgramName);
logger.LogInformation("Python3.Version: " + PythonEngine.Version);
logger.LogInformation("Python3.Platform: " + PythonEngine.Platform);
logger.LogInformation("Python3.BuildInfo: " + PythonEngine.BuildInfo);
logger.LogInformation("Python3.PythonHome: " + PythonEngine.PythonHome);
logger.LogInformation("Python3.PythonPath: " + PythonEngine.PythonPath);
PythonEngine.Initialize();
try
{
NumpyHelper.TryInitialize();
RoboticsTypesExtensions.Initialize();
}
catch (PythonException e)
{
logger.LogError(e, "Python special type converter initialization failed: " + e.Message);
}
modulesExcludedFormReload = GetLoadedModuleNames().Concat(GetBuiltInModuleNames()).ToHashSet();
}
}
public static object ToClrObject(PyObject obj, Type expectedType)
{
if (obj == null)
{
return(null);
}
var pyType = obj.GetPythonType();
var typeName = pyType.GetAttr("__name__").ToString();
if (typeName == "NoneType")
{
return(null);
}
else if (typeName == "str")
{
return(obj.As <string>());
}
else if (typeName == "int")
{
return(obj.As <int>());
}
else if (typeName == "float")
{
return(obj.As <double>());
}
else if (typeName == "bool")
{
return(obj.As <bool>());
}
else if (NumpyHelper.IsNumpyPrimitive(typeName))
{
return(NumpyHelper.ToPrimitiveType(typeName, obj));
}
else if (typeName == "ndarray")
{
return(NumpyHelper.ToA(obj));
}
else if (typeName == "tuple")
{
int length = obj.Length();
if (length == 0)
{
return(null);
}
var pyItems = new List <PyObject>(length);
for (int i = 0; i < length; i += 1)
{
PyObject item = obj[i];
pyItems.Add(item);
}
object[] clrItems;
object tuple;
if (typeof(ITuple).IsAssignableFrom(expectedType))
{
var types = TypeHelpers.GetTupleTypes(expectedType);
clrItems = pyItems.Select((x, i) => ToClrObject(x, types[i])).ToArray();
tuple = Activator.CreateInstance(expectedType, clrItems);
}
else if (expectedType == typeof(object))
{
var types = new Type[length];
Array.Fill(types, typeof(object));
var tupleType = TypeHelpers.CreateTupleType(types);
clrItems = pyItems.Select(x => ToClrObject(x, typeof(object))).ToArray();
tuple = Activator.CreateInstance(tupleType, clrItems);
}
else
{
throw new Exception($"Target type {expectedType.Name} cannot be assigned from python tuple.");
}
return(tuple);
}
else if (typeName == "list" || typeName == "deque")
{
Type elementType;
Type listType = TypeHelpers.GetGenericTypeBase(expectedType, typeof(IList <>));
IList list;
if (listType != null)
{
elementType = listType.GetGenericArguments()[0];
listType = typeof(List <>).MakeGenericType(elementType);
list = (IList)Activator.CreateInstance(listType);
}
else if (expectedType == typeof(object))
{
elementType = typeof(object);
list = new List <object>();
}
else
{
throw new Exception($"Target type {expectedType.Name} cannot be assigned from python list.");
}
int length = obj.Length();
for (int i = 0; i < length; i += 1)
{
PyObject item = obj[i];
list.Add(ToClrObject(item, elementType));
}
return(list);
}
else if (typeName == "dict")
{
Type keyType;
Type valueType;
Type dictionaryType = TypeHelpers.GetGenericTypeBase(expectedType, typeof(IDictionary <,>));
IDictionary dictionary;
if (dictionaryType != null)
{
var genericArgs = dictionaryType.GetGenericArguments();
keyType = genericArgs[0];
valueType = genericArgs[1];
dictionaryType = typeof(Dictionary <,>).MakeGenericType(keyType, valueType);
dictionary = (IDictionary)Activator.CreateInstance(dictionaryType);
}
else if (expectedType == typeof(object))
{
keyType = typeof(string);
valueType = typeof(object);
dictionary = new Dictionary <string, object>();
}
else
{
throw new Exception($"Target type {expectedType.Name} cannot be assigned from python dict.");
}
var dict = new PyDict(obj);
foreach (PyObject key in dict.Keys())
{
PyObject value = dict[key];
dictionary.Add(ToClrObject(key, keyType), ToClrObject(value, valueType));
}
return(dictionary);
}
else if (typeName == "JointSet")
{
return(RoboticsTypesExtensions.FromPyJointSet(obj));
}
else if (typeName == "JointValues")
{
return(RoboticsTypesExtensions.FromPyJointValues(obj));
}
else if (typeName == "Pose")
{
return(RoboticsTypesExtensions.FromPyPose(obj));
}
else if (typeName == "timedelta")
{
return(RoboticsTypesExtensions.FromPyTimeDelta(obj));
}
else if (typeName == "JointTrajectoryPoint")
{
return(RoboticsTypesExtensions.FromPyJoinTrajectoryPoint(obj));
}
else if (typeName == "JointTrajectory")
{
return(RoboticsTypesExtensions.FromPyJointTrajectory(obj));
}
else if (typeName == "JointStates")
{
return(RoboticsTypesExtensions.FromPyJointStates(obj));
}
else if (typeName == "JointPath")
{
return(RoboticsTypesExtensions.FromPyJointPath(obj));
}
else if (typeName == "CartesianPath")
{
return(RoboticsTypesExtensions.FromPyCartesianPath(obj));
}
else if (typeName == "PlanParameters")
{
return(RoboticsTypesExtensions.FromPyPlanParameters(obj));
}
else if (typeName == "CollisionPrimitive")
{
return(RoboticsTypesExtensions.FromPyCollisionPrimitive(obj));
}
else if (typeName == "CollisionObject")
{
return(RoboticsTypesExtensions.FromPyCollisionObject(obj));
}
else
{
throw new Exception($"Encountered unsupported type annotation '{pyType.ToString()}'.");
}
}
