_TFMessage.py

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"""autogenerated by genpy from tf2_msgs/TFMessage.msg. Do not edit."""
import sys
python3 = True if sys.hexversion > 0x03000000 else False
import genpy
import struct

import geometry_msgs.msg
import std_msgs.msg

class TFMessage(genpy.Message):
  _md5sum = "94810edda583a504dfda3829e70d7eec"
  _type = "tf2_msgs/TFMessage"
  _has_header = False #flag to mark the presence of a Header object
  _full_text = """geometry_msgs/TransformStamped[] transforms

================================================================================
MSG: geometry_msgs/TransformStamped
# This expresses a transform from coordinate frame header.frame_id
# to the coordinate frame child_frame_id
#
# This message is mostly used by the 
# <a href="http://www.ros.org/wiki/tf">tf</a> package. 
# See it's documentation for more information.

Header header
string child_frame_id # the frame id of the child frame
Transform transform

================================================================================
MSG: std_msgs/Header
# Standard metadata for higher-level stamped data types.
# This is generally used to communicate timestamped data 
# in a particular coordinate frame.
# 
# sequence ID: consecutively increasing ID 
uint32 seq
#Two-integer timestamp that is expressed as:
# * stamp.secs: seconds (stamp_secs) since epoch
# * stamp.nsecs: nanoseconds since stamp_secs
# time-handling sugar is provided by the client library
time stamp
#Frame this data is associated with
# 0: no frame
# 1: global frame
string frame_id

================================================================================
MSG: geometry_msgs/Transform
# This represents the transform between two coordinate frames in free space.

Vector3 translation
Quaternion rotation

================================================================================
MSG: geometry_msgs/Vector3
# This represents a vector in free space. 

float64 x
float64 y
float64 z
================================================================================
MSG: geometry_msgs/Quaternion
# This represents an orientation in free space in quaternion form.

float64 x
float64 y
float64 z
float64 w

"""
  __slots__ = ['transforms']
  _slot_types = ['geometry_msgs/TransformStamped[]']

  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:
       transforms

    :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(TFMessage, self).__init__(*args, **kwds)
      #message fields cannot be None, assign default values for those that are
      if self.transforms is None:
        self.transforms = []
    else:
      self.transforms = []

  def _get_types(self):
    """
    internal API method
    """
    return self._slot_types

  def serialize(self, buff):
    """
    serialize message into buffer
    :param buff: buffer, ``StringIO``
    """
    try:
      length = len(self.transforms)
      buff.write(_struct_I.pack(length))
      for val1 in self.transforms:
        _v1 = val1.header
        buff.write(_struct_I.pack(_v1.seq))
        _v2 = _v1.stamp
        _x = _v2
        buff.write(_struct_2I.pack(_x.secs, _x.nsecs))
        _x = _v1.frame_id
        length = len(_x)
        if python3 or type(_x) == unicode:
          _x = _x.encode('utf-8')
          length = len(_x)
        buff.write(struct.pack('<I%ss'%length, length, _x))
        _x = val1.child_frame_id
        length = len(_x)
        if python3 or type(_x) == unicode:
          _x = _x.encode('utf-8')
          length = len(_x)
        buff.write(struct.pack('<I%ss'%length, length, _x))
        _v3 = val1.transform
        _v4 = _v3.translation
        _x = _v4
        buff.write(_struct_3d.pack(_x.x, _x.y, _x.z))
        _v5 = _v3.rotation
        _x = _v5
        buff.write(_struct_4d.pack(_x.x, _x.y, _x.z, _x.w))
    except struct.error as se: self._check_types(se)
    except TypeError as te: self._check_types(te)

  def deserialize(self, str):
    """
    unpack serialized message in str into this message instance
    :param str: byte array of serialized message, ``str``
    """
    try:
      if self.transforms is None:
        self.transforms = None
      end = 0
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      self.transforms = []
      for i in range(0, length):
        val1 = geometry_msgs.msg.TransformStamped()
        _v6 = val1.header
        start = end
        end += 4
        (_v6.seq,) = _struct_I.unpack(str[start:end])
        _v7 = _v6.stamp
        _x = _v7
        start = end
        end += 8
        (_x.secs, _x.nsecs,) = _struct_2I.unpack(str[start:end])
        start = end
        end += 4
        (length,) = _struct_I.unpack(str[start:end])
        start = end
        end += length
        if python3:
          _v6.frame_id = str[start:end].decode('utf-8')
        else:
          _v6.frame_id = str[start:end]
        start = end
        end += 4
        (length,) = _struct_I.unpack(str[start:end])
        start = end
        end += length
        if python3:
          val1.child_frame_id = str[start:end].decode('utf-8')
        else:
          val1.child_frame_id = str[start:end]
        _v8 = val1.transform
        _v9 = _v8.translation
        _x = _v9
        start = end
        end += 24
        (_x.x, _x.y, _x.z,) = _struct_3d.unpack(str[start:end])
        _v10 = _v8.rotation
        _x = _v10
        start = end
        end += 32
        (_x.x, _x.y, _x.z, _x.w,) = _struct_4d.unpack(str[start:end])
        self.transforms.append(val1)
      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:
      length = len(self.transforms)
      buff.write(_struct_I.pack(length))
      for val1 in self.transforms:
        _v11 = val1.header
        buff.write(_struct_I.pack(_v11.seq))
        _v12 = _v11.stamp
        _x = _v12
        buff.write(_struct_2I.pack(_x.secs, _x.nsecs))
        _x = _v11.frame_id
        length = len(_x)
        if python3 or type(_x) == unicode:
          _x = _x.encode('utf-8')
          length = len(_x)
        buff.write(struct.pack('<I%ss'%length, length, _x))
        _x = val1.child_frame_id
        length = len(_x)
        if python3 or type(_x) == unicode:
          _x = _x.encode('utf-8')
          length = len(_x)
        buff.write(struct.pack('<I%ss'%length, length, _x))
        _v13 = val1.transform
        _v14 = _v13.translation
        _x = _v14
        buff.write(_struct_3d.pack(_x.x, _x.y, _x.z))
        _v15 = _v13.rotation
        _x = _v15
        buff.write(_struct_4d.pack(_x.x, _x.y, _x.z, _x.w))
    except struct.error as se: self._check_types(se)
    except TypeError as te: self._check_types(te)

  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.transforms is None:
        self.transforms = None
      end = 0
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      self.transforms = []
      for i in range(0, length):
        val1 = geometry_msgs.msg.TransformStamped()
        _v16 = val1.header
        start = end
        end += 4
        (_v16.seq,) = _struct_I.unpack(str[start:end])
        _v17 = _v16.stamp
        _x = _v17
        start = end
        end += 8
        (_x.secs, _x.nsecs,) = _struct_2I.unpack(str[start:end])
        start = end
        end += 4
        (length,) = _struct_I.unpack(str[start:end])
        start = end
        end += length
        if python3:
          _v16.frame_id = str[start:end].decode('utf-8')
        else:
          _v16.frame_id = str[start:end]
        start = end
        end += 4
        (length,) = _struct_I.unpack(str[start:end])
        start = end
        end += length
        if python3:
          val1.child_frame_id = str[start:end].decode('utf-8')
        else:
          val1.child_frame_id = str[start:end]
        _v18 = val1.transform
        _v19 = _v18.translation
        _x = _v19
        start = end
        end += 24
        (_x.x, _x.y, _x.z,) = _struct_3d.unpack(str[start:end])
        _v20 = _v18.rotation
        _x = _v20
        start = end
        end += 32
        (_x.x, _x.y, _x.z, _x.w,) = _struct_4d.unpack(str[start:end])
        self.transforms.append(val1)
      return self
    except struct.error as e:
      raise genpy.DeserializationError(e) #most likely buffer underfill

_struct_I = genpy.struct_I
_struct_4d = struct.Struct("<4d")
_struct_2I = struct.Struct("<2I")
_struct_3d = struct.Struct("<3d")