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_ChannelFloat32.py

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"""autogenerated by genmsg_py from ChannelFloat32.msg. Do not edit."""
import roslib.message
import struct


class ChannelFloat32(roslib.message.Message):
  _md5sum = "3d40139cdd33dfedcb71ffeeeb42ae7f"
  _type = "sensor_msgs/ChannelFloat32"
  _has_header = False #flag to mark the presence of a Header object
  _full_text = """# 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__ = ['name','values']
  _slot_types = ['string','float32[]']

  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:
       name,values
    
    @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(ChannelFloat32, self).__init__(*args, **kwds)
      #message fields cannot be None, assign default values for those that are
      if self.name is None:
        self.name = ''
      if self.values is None:
        self.values = []
    else:
      self.name = ''
      self.values = []

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

  def serialize(self, buff):
    """
    serialize message into buffer
    @param buff: buffer
    @type  buff: StringIO
    """
    try:
      _x = self.name
      length = len(_x)
      buff.write(struct.pack('<I%ss'%length, length, _x))
      length = len(self.values)
      buff.write(_struct_I.pack(length))
      pattern = '<%sf'%length
      buff.write(struct.pack(pattern, *self.values))
    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
    @type  str: str
    """
    try:
      end = 0
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      start = end
      end += length
      self.name = str[start:end]
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      pattern = '<%sf'%length
      start = end
      end += struct.calcsize(pattern)
      self.values = struct.unpack(pattern, str[start:end])
      return self
    except struct.error as e:
      raise roslib.message.DeserializationError(e) #most likely buffer underfill


  def serialize_numpy(self, buff, numpy):
    """
    serialize message with numpy array types into buffer
    @param buff: buffer
    @type  buff: StringIO
    @param numpy: numpy python module
    @type  numpy module
    """
    try:
      _x = self.name
      length = len(_x)
      buff.write(struct.pack('<I%ss'%length, length, _x))
      length = len(self.values)
      buff.write(_struct_I.pack(length))
      pattern = '<%sf'%length
      buff.write(self.values.tostring())
    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
    @type  str: str
    @param numpy: numpy python module
    @type  numpy: module
    """
    try:
      end = 0
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      start = end
      end += length
      self.name = str[start:end]
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      pattern = '<%sf'%length
      start = end
      end += struct.calcsize(pattern)
      self.values = numpy.frombuffer(str[start:end], dtype=numpy.float32, count=length)
      return self
    except struct.error as e:
      raise roslib.message.DeserializationError(e) #most likely buffer underfill

_struct_I = roslib.message.struct_I

---

sensor_msgs
Author(s): Maintained by Tully Foote/tfoote@willowgarage.com
autogenerated on Fri Mar 1 15:05:53 2013