python-sensor-msgs 1.12.5-2 / usr / lib / python2.7 / dist-packages / sensor_msgs / msg / _PointCloud.py

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/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_PointCloud.py is in python-sensor-msgs 1.12.5-2.

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The actual contents of the file can be viewed below. 

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# This Python file uses the following encoding: utf-8
"""autogenerated by genpy from sensor_msgs/PointCloud.msg. Do not edit."""
import sys
python3 = True if sys.hexversion > 0x03000000 else False
import genpy
import struct

import sensor_msgs.msg
import geometry_msgs.msg
import std_msgs.msg

class PointCloud(genpy.Message):
  _md5sum = "d8e9c3f5afbdd8a130fd1d2763945fca"
  _type = "sensor_msgs/PointCloud"
  _has_header = True #flag to mark the presence of a Header object
  _full_text = """# This message holds a collection of 3d points, plus optional additional
# information about each point.

# Time of sensor data acquisition, coordinate frame ID.
Header header

# Array of 3d points. Each Point32 should be interpreted as a 3d point
# in the frame given in the header.
geometry_msgs/Point32[] points

# Each channel should have the same number of elements as points array,
# and the data in each channel should correspond 1:1 with each point.
# Channel names in common practice are listed in ChannelFloat32.msg.
ChannelFloat32[] channels

================================================================================
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.sec: seconds (stamp_secs) since epoch (in Python the variable is called 'secs')
# * stamp.nsec: nanoseconds since stamp_secs (in Python the variable is called 'nsecs')
# 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/Point32
# This contains the position of a point in free space(with 32 bits of precision).
# It is recommeded to use Point wherever possible instead of Point32.  
# 
# This recommendation is to promote interoperability.  
#
# This message is designed to take up less space when sending
# lots of points at once, as in the case of a PointCloud.  

float32 x
float32 y
float32 z
================================================================================
MSG: sensor_msgs/ChannelFloat32
# This message is used by the PointCloud message to hold optional data
# associated with each point in the cloud. The length of the values
# array should be the same as the length of the points array in the
# PointCloud, and each value should be associated with the corresponding
# point.

# Channel names in existing practice include:
#   "u", "v" - row and column (respectively) in the left stereo image.
#              This is opposite to usual conventions but remains for
#              historical reasons. The newer PointCloud2 message has no
#              such problem.
#   "rgb" - For point clouds produced by color stereo cameras. uint8
#           (R,G,B) values packed into the least significant 24 bits,
#           in order.
#   "intensity" - laser or pixel intensity.
#   "distance"

# The channel name should give semantics of the channel (e.g.
# "intensity" instead of "value").
string name

# The values array should be 1-1 with the elements of the associated
# PointCloud.
float32[] values
"""
  __slots__ = ['header','points','channels']
  _slot_types = ['std_msgs/Header','geometry_msgs/Point32[]','sensor_msgs/ChannelFloat32[]']

  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:
       header,points,channels

    :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(PointCloud, self).__init__(*args, **kwds)
      #message fields cannot be None, assign default values for those that are
      if self.header is None:
        self.header = std_msgs.msg.Header()
      if self.points is None:
        self.points = []
      if self.channels is None:
        self.channels = []
    else:
      self.header = std_msgs.msg.Header()
      self.points = []
      self.channels = []

  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(_get_struct_3I().pack(_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs))
      _x = self.header.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))
      length = len(self.points)
      buff.write(_struct_I.pack(length))
      for val1 in self.points:
        _x = val1
        buff.write(_get_struct_3f().pack(_x.x, _x.y, _x.z))
      length = len(self.channels)
      buff.write(_struct_I.pack(length))
      for val1 in self.channels:
        _x = val1.name
        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))
        length = len(val1.values)
        buff.write(_struct_I.pack(length))
        pattern = '<%sf'%length
        buff.write(struct.pack(pattern, *val1.values))
    except struct.error as se: self._check_types(struct.error("%s: '%s' when writing '%s'" % (type(se), str(se), str(locals().get('_x', self)))))
    except TypeError as te: self._check_types(ValueError("%s: '%s' when writing '%s'" % (type(te), str(te), str(locals().get('_x', self)))))

  def deserialize(self, str):
    """
    unpack serialized message in str into this message instance
    :param str: byte array of serialized message, ``str``
    """
    try:
      if self.header is None:
        self.header = std_msgs.msg.Header()
      if self.points is None:
        self.points = None
      if self.channels is None:
        self.channels = None
      end = 0
      _x = self
      start = end
      end += 12
      (_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs,) = _get_struct_3I().unpack(str[start:end])
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      start = end
      end += length
      if python3:
        self.header.frame_id = str[start:end].decode('utf-8')
      else:
        self.header.frame_id = str[start:end]
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      self.points = []
      for i in range(0, length):
        val1 = geometry_msgs.msg.Point32()
        _x = val1
        start = end
        end += 12
        (_x.x, _x.y, _x.z,) = _get_struct_3f().unpack(str[start:end])
        self.points.append(val1)
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      self.channels = []
      for i in range(0, length):
        val1 = sensor_msgs.msg.ChannelFloat32()
        start = end
        end += 4
        (length,) = _struct_I.unpack(str[start:end])
        start = end
        end += length
        if python3:
          val1.name = str[start:end].decode('utf-8')
        else:
          val1.name = str[start:end]
        start = end
        end += 4
        (length,) = _struct_I.unpack(str[start:end])
        pattern = '<%sf'%length
        start = end
        end += struct.calcsize(pattern)
        val1.values = struct.unpack(pattern, str[start:end])
        self.channels.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:
      _x = self
      buff.write(_get_struct_3I().pack(_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs))
      _x = self.header.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))
      length = len(self.points)
      buff.write(_struct_I.pack(length))
      for val1 in self.points:
        _x = val1
        buff.write(_get_struct_3f().pack(_x.x, _x.y, _x.z))
      length = len(self.channels)
      buff.write(_struct_I.pack(length))
      for val1 in self.channels:
        _x = val1.name
        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))
        length = len(val1.values)
        buff.write(_struct_I.pack(length))
        pattern = '<%sf'%length
        buff.write(val1.values.tostring())
    except struct.error as se: self._check_types(struct.error("%s: '%s' when writing '%s'" % (type(se), str(se), str(locals().get('_x', self)))))
    except TypeError as te: self._check_types(ValueError("%s: '%s' when writing '%s'" % (type(te), str(te), str(locals().get('_x', self)))))

  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.header is None:
        self.header = std_msgs.msg.Header()
      if self.points is None:
        self.points = None
      if self.channels is None:
        self.channels = None
      end = 0
      _x = self
      start = end
      end += 12
      (_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs,) = _get_struct_3I().unpack(str[start:end])
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      start = end
      end += length
      if python3:
        self.header.frame_id = str[start:end].decode('utf-8')
      else:
        self.header.frame_id = str[start:end]
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      self.points = []
      for i in range(0, length):
        val1 = geometry_msgs.msg.Point32()
        _x = val1
        start = end
        end += 12
        (_x.x, _x.y, _x.z,) = _get_struct_3f().unpack(str[start:end])
        self.points.append(val1)
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      self.channels = []
      for i in range(0, length):
        val1 = sensor_msgs.msg.ChannelFloat32()
        start = end
        end += 4
        (length,) = _struct_I.unpack(str[start:end])
        start = end
        end += length
        if python3:
          val1.name = str[start:end].decode('utf-8')
        else:
          val1.name = str[start:end]
        start = end
        end += 4
        (length,) = _struct_I.unpack(str[start:end])
        pattern = '<%sf'%length
        start = end
        end += struct.calcsize(pattern)
        val1.values = numpy.frombuffer(str[start:end], dtype=numpy.float32, count=length)
        self.channels.append(val1)
      return self
    except struct.error as e:
      raise genpy.DeserializationError(e) #most likely buffer underfill

_struct_I = genpy.struct_I
def _get_struct_I():
    global _struct_I
    return _struct_I
_struct_3I = None
def _get_struct_3I():
    global _struct_3I
    if _struct_3I is None:
        _struct_3I = struct.Struct("<3I")
    return _struct_3I
_struct_3f = None
def _get_struct_3f():
    global _struct_3f
    if _struct_3f is None:
        _struct_3f = struct.Struct("<3f")
    return _struct_3f

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