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_LaserScan.py

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

import std_msgs.msg

class LaserScan(roslib.message.Message):
  _md5sum = "90c7ef2dc6895d81024acba2ac42f369"
  _type = "sensor_msgs/LaserScan"
  _has_header = True #flag to mark the presence of a Header object
  _full_text = """# Single scan from a planar laser range-finder
#
# If you have another ranging device with different behavior (e.g. a sonar
# array), please find or create a different message, since applications
# will make fairly laser-specific assumptions about this data

Header header            # timestamp in the header is the acquisition time of 
                         # the first ray in the scan.
                         #
                         # in frame frame_id, angles are measured around 
                         # the positive Z axis (counterclockwise, if Z is up)
                         # with zero angle being forward along the x axis
                         
float32 angle_min        # start angle of the scan [rad]
float32 angle_max        # end angle of the scan [rad]
float32 angle_increment  # angular distance between measurements [rad]

float32 time_increment   # time between measurements [seconds] - if your scanner
                         # is moving, this will be used in interpolating position
                         # of 3d points
float32 scan_time        # time between scans [seconds]

float32 range_min        # minimum range value [m]
float32 range_max        # maximum range value [m]

float32[] ranges         # range data [m] (Note: values < range_min or > range_max should be discarded)
float32[] intensities    # intensity data [device-specific units].  If your
                         # device does not provide intensities, please leave
                         # the array empty.

================================================================================
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

"""
  __slots__ = ['header','angle_min','angle_max','angle_increment','time_increment','scan_time','range_min','range_max','ranges','intensities']
  _slot_types = ['Header','float32','float32','float32','float32','float32','float32','float32','float32[]','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:
       header,angle_min,angle_max,angle_increment,time_increment,scan_time,range_min,range_max,ranges,intensities
    
    @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(LaserScan, 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.Header()
      if self.angle_min is None:
        self.angle_min = 0.
      if self.angle_max is None:
        self.angle_max = 0.
      if self.angle_increment is None:
        self.angle_increment = 0.
      if self.time_increment is None:
        self.time_increment = 0.
      if self.scan_time is None:
        self.scan_time = 0.
      if self.range_min is None:
        self.range_min = 0.
      if self.range_max is None:
        self.range_max = 0.
      if self.ranges is None:
        self.ranges = []
      if self.intensities is None:
        self.intensities = []
    else:
      self.header = std_msgs.msg._Header.Header()
      self.angle_min = 0.
      self.angle_max = 0.
      self.angle_increment = 0.
      self.time_increment = 0.
      self.scan_time = 0.
      self.range_min = 0.
      self.range_max = 0.
      self.ranges = []
      self.intensities = []

  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
      buff.write(_struct_3I.pack(_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs))
      _x = self.header.frame_id
      length = len(_x)
      buff.write(struct.pack('<I%ss'%length, length, _x))
      _x = self
      buff.write(_struct_7f.pack(_x.angle_min, _x.angle_max, _x.angle_increment, _x.time_increment, _x.scan_time, _x.range_min, _x.range_max))
      length = len(self.ranges)
      buff.write(_struct_I.pack(length))
      pattern = '<%sf'%length
      buff.write(struct.pack(pattern, *self.ranges))
      length = len(self.intensities)
      buff.write(_struct_I.pack(length))
      pattern = '<%sf'%length
      buff.write(struct.pack(pattern, *self.intensities))
    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:
      if self.header is None:
        self.header = std_msgs.msg._Header.Header()
      end = 0
      _x = self
      start = end
      end += 12
      (_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs,) = _struct_3I.unpack(str[start:end])
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      start = end
      end += length
      self.header.frame_id = str[start:end]
      _x = self
      start = end
      end += 28
      (_x.angle_min, _x.angle_max, _x.angle_increment, _x.time_increment, _x.scan_time, _x.range_min, _x.range_max,) = _struct_7f.unpack(str[start:end])
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      pattern = '<%sf'%length
      start = end
      end += struct.calcsize(pattern)
      self.ranges = struct.unpack(pattern, str[start:end])
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      pattern = '<%sf'%length
      start = end
      end += struct.calcsize(pattern)
      self.intensities = 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
      buff.write(_struct_3I.pack(_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs))
      _x = self.header.frame_id
      length = len(_x)
      buff.write(struct.pack('<I%ss'%length, length, _x))
      _x = self
      buff.write(_struct_7f.pack(_x.angle_min, _x.angle_max, _x.angle_increment, _x.time_increment, _x.scan_time, _x.range_min, _x.range_max))
      length = len(self.ranges)
      buff.write(_struct_I.pack(length))
      pattern = '<%sf'%length
      buff.write(self.ranges.tostring())
      length = len(self.intensities)
      buff.write(_struct_I.pack(length))
      pattern = '<%sf'%length
      buff.write(self.intensities.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:
      if self.header is None:
        self.header = std_msgs.msg._Header.Header()
      end = 0
      _x = self
      start = end
      end += 12
      (_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs,) = _struct_3I.unpack(str[start:end])
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      start = end
      end += length
      self.header.frame_id = str[start:end]
      _x = self
      start = end
      end += 28
      (_x.angle_min, _x.angle_max, _x.angle_increment, _x.time_increment, _x.scan_time, _x.range_min, _x.range_max,) = _struct_7f.unpack(str[start:end])
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      pattern = '<%sf'%length
      start = end
      end += struct.calcsize(pattern)
      self.ranges = numpy.frombuffer(str[start:end], dtype=numpy.float32, count=length)
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      pattern = '<%sf'%length
      start = end
      end += struct.calcsize(pattern)
      self.intensities = 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
_struct_7f = struct.Struct("<7f")
_struct_3I = struct.Struct("<3I")

---

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