/usr/lib/python2.7/dist-packages/geometry_msgs/msg/_TwistWithCovariance.py is in python-geometry-msgs 1.12.3-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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"""autogenerated by genpy from geometry_msgs/TwistWithCovariance.msg. Do not edit."""
import sys
python3 = True if sys.hexversion > 0x03000000 else False
import genpy
import struct
import geometry_msgs.msg
class TwistWithCovariance(genpy.Message):
_md5sum = "1fe8a28e6890a4cc3ae4c3ca5c7d82e6"
_type = "geometry_msgs/TwistWithCovariance"
_has_header = False #flag to mark the presence of a Header object
_full_text = """# This expresses velocity in free space with uncertainty.
Twist twist
# Row-major representation of the 6x6 covariance matrix
# The orientation parameters use a fixed-axis representation.
# In order, the parameters are:
# (x, y, z, rotation about X axis, rotation about Y axis, rotation about Z axis)
float64[36] covariance
================================================================================
MSG: geometry_msgs/Twist
# This expresses velocity in free space broken into its linear and angular parts.
Vector3 linear
Vector3 angular
================================================================================
MSG: geometry_msgs/Vector3
# This represents a vector in free space.
float64 x
float64 y
float64 z
"""
__slots__ = ['twist','covariance']
_slot_types = ['geometry_msgs/Twist','float64[36]']
def __init__(self, *args, **kwds):
"""
Constructor. Any message fields that are implicitly/explicitly
set to None will be assigned a default value. The recommend
use is keyword arguments as this is more robust to future message
changes. You cannot mix in-order arguments and keyword arguments.
The available fields are:
twist,covariance
:param args: complete set of field values, in .msg order
:param kwds: use keyword arguments corresponding to message field names
to set specific fields.
"""
if args or kwds:
super(TwistWithCovariance, self).__init__(*args, **kwds)
#message fields cannot be None, assign default values for those that are
if self.twist is None:
self.twist = geometry_msgs.msg.Twist()
if self.covariance is None:
self.covariance = [0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.]
else:
self.twist = geometry_msgs.msg.Twist()
self.covariance = [0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.]
def _get_types(self):
"""
internal API method
"""
return self._slot_types
def serialize(self, buff):
"""
serialize message into buffer
:param buff: buffer, ``StringIO``
"""
try:
_x = self
buff.write(_struct_6d.pack(_x.twist.linear.x, _x.twist.linear.y, _x.twist.linear.z, _x.twist.angular.x, _x.twist.angular.y, _x.twist.angular.z))
buff.write(_struct_36d.pack(*self.covariance))
except struct.error as se: self._check_types(struct.error("%s: '%s' when writing '%s'" % (type(se), str(se), str(_x))))
except TypeError as te: self._check_types(ValueError("%s: '%s' when writing '%s'" % (type(te), str(te), str(_x))))
def deserialize(self, str):
"""
unpack serialized message in str into this message instance
:param str: byte array of serialized message, ``str``
"""
try:
if self.twist is None:
self.twist = geometry_msgs.msg.Twist()
end = 0
_x = self
start = end
end += 48
(_x.twist.linear.x, _x.twist.linear.y, _x.twist.linear.z, _x.twist.angular.x, _x.twist.angular.y, _x.twist.angular.z,) = _struct_6d.unpack(str[start:end])
start = end
end += 288
self.covariance = _struct_36d.unpack(str[start:end])
return self
except struct.error as e:
raise genpy.DeserializationError(e) #most likely buffer underfill
def serialize_numpy(self, buff, numpy):
"""
serialize message with numpy array types into buffer
:param buff: buffer, ``StringIO``
:param numpy: numpy python module
"""
try:
_x = self
buff.write(_struct_6d.pack(_x.twist.linear.x, _x.twist.linear.y, _x.twist.linear.z, _x.twist.angular.x, _x.twist.angular.y, _x.twist.angular.z))
buff.write(self.covariance.tostring())
except struct.error as se: self._check_types(struct.error("%s: '%s' when writing '%s'" % (type(se), str(se), str(_x))))
except TypeError as te: self._check_types(ValueError("%s: '%s' when writing '%s'" % (type(te), str(te), str(_x))))
def deserialize_numpy(self, str, numpy):
"""
unpack serialized message in str into this message instance using numpy for array types
:param str: byte array of serialized message, ``str``
:param numpy: numpy python module
"""
try:
if self.twist is None:
self.twist = geometry_msgs.msg.Twist()
end = 0
_x = self
start = end
end += 48
(_x.twist.linear.x, _x.twist.linear.y, _x.twist.linear.z, _x.twist.angular.x, _x.twist.angular.y, _x.twist.angular.z,) = _struct_6d.unpack(str[start:end])
start = end
end += 288
self.covariance = numpy.frombuffer(str[start:end], dtype=numpy.float64, count=36)
return self
except struct.error as e:
raise genpy.DeserializationError(e) #most likely buffer underfill
_struct_I = genpy.struct_I
_struct_36d = struct.Struct("<36d")
_struct_6d = struct.Struct("<6d")
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