Class: Geometry_msgs::Polygon

Inherits:
ROS::Message
  • Object
show all
Defined in:
lib/geometry_msgs/Polygon.rb

Constant Summary collapse

@@struct_f3 = 
::ROS::Struct.new("f3")
@@struct_L = 
::ROS::Struct.new("L")
@@slot_types = 
['geometry_msgs/Point32[]']

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args = {}) ⇒ Polygon

Constructor. You can set the default values using keyword operators.

Parameters:

  • args (Hash) (defaults to: {}) —

    keyword for initializing values

Options Hash (args):

  • :points (geometry_msgs/Point32[]) —

    initialize value



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# File 'lib/geometry_msgs/Polygon.rb', line 51

def initialize(args={})
  # message fields cannot be None, assign default values for those that are
  if args[:points]
    @points = args[:points]
  else
    @points = []
  end
end

Instance Attribute Details

#points ⇒ Object

Returns the value of attribute points.



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# File 'lib/geometry_msgs/Polygon.rb', line 40

def points
  @points
end

Class Method Details

.md5sum ⇒ Object 



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# File 'lib/geometry_msgs/Polygon.rb', line 9

def self.md5sum
  "cd60a26494a087f577976f0329fa120e"
end

.type ⇒ Object 



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# File 'lib/geometry_msgs/Polygon.rb', line 13

def self.type
  "geometry_msgs/Polygon"
end

Instance Method Details

#_get_types ⇒ String

internal API method

Returns:

  • (String) —

    Message type string.



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# File 'lib/geometry_msgs/Polygon.rb', line 62

def _get_types
  @slot_types
end

#deserialize(str) ⇒ Object

unpack serialized message in str into this message instance

@param [String] str: byte array of serialized message



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# File 'lib/geometry_msgs/Polygon.rb', line 84

def deserialize(str)

  begin
    end_point = 0
    start = end_point
    end_point += 4
    (length,) = @@struct_L.unpack(str[start..(end_point-1)])
    @points = []
    length.times do
      val1 = Geometry_msgs::Point32.new
      _x = val1
      start = end_point
      end_point += ROS::Struct::calc_size('f3')
      (_x.x, _x.y, _x.z,) = @@struct_f3.unpack(str[start..(end_point-1)])
      @points.push(val1)
    end
    return self
  rescue => exception
    raise "message DeserializationError: #{exception}" #most likely buffer underfill
  end
end

#has_header? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/geometry_msgs/Polygon.rb', line 17

def has_header?
  false
end

#message_definition ⇒ Object 



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# File 'lib/geometry_msgs/Polygon.rb', line 21

def message_definition
  "#A specification of a polygon where the first and last points are assumed to be connected
Point32[] points

================================================================================
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
"
end

#serialize(buff) ⇒ Object

serialize message into buffer

Parameters:

  • buff (IO) —

    buffer



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# File 'lib/geometry_msgs/Polygon.rb', line 68

def serialize(buff)
  begin
    length = @points.length
    buff.write(@@struct_L.pack(length))
    for val1 in @points
      _x = val1
      buff.write(@@struct_f3.pack(_x.x, _x.y, _x.z))
    end
  rescue => exception
    raise "some erro in serialize: #{exception}"

  end
end