Class: Std_msgs::Float64

Inherits:
ROS::Message
  • Object
show all
Defined in:
lib/std_msgs/Float64.rb

Constant Summary collapse

@@struct_d = 
::ROS::Struct.new("d")
@@struct_L = 
::ROS::Struct.new("L")
@@slot_types = 
['float64']

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args = {}) ⇒ Float64

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

Parameters:

  • args (Hash) (defaults to: {}) —

    keyword for initializing values

Options Hash (args):

  • :data (float64) —

    initialize value



35
36
37
38
39
40
41
42
 
# File 'lib/std_msgs/Float64.rb', line 35

def initialize(args={})
  # message fields cannot be None, assign default values for those that are
  if args[:data]
    @data = args[:data]
  else
    @data = 0.0
  end
end

Instance Attribute Details

#data ⇒ Object

Returns the value of attribute data.



24
25
26
 
# File 'lib/std_msgs/Float64.rb', line 24

def data
  @data
end

Class Method Details

.md5sum ⇒ Object 



8
9
10
 
# File 'lib/std_msgs/Float64.rb', line 8

def self.md5sum
  "fdb28210bfa9d7c91146260178d9a584"
end

.type ⇒ Object 



12
13
14
 
# File 'lib/std_msgs/Float64.rb', line 12

def self.type
  "std_msgs/Float64"
end

Instance Method Details

#_get_types ⇒ String

internal API method

Returns:

  • (String) —

    Message type string.



46
47
48
 
# File 'lib/std_msgs/Float64.rb', line 46

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



63
64
65
66
67
68
69
70
71
72
73
74
 
# File 'lib/std_msgs/Float64.rb', line 63

def deserialize(str)

  begin
    end_point = 0
    start = end_point
    end_point += ROS::Struct::calc_size('d')
    (@data,) = @@struct_d.unpack(str[start..(end_point-1)])
    return self
  rescue => exception
    raise "message DeserializationError: #{exception}" #most likely buffer underfill
  end
end

#has_header? ⇒ Boolean

Returns:

  • (Boolean) 


16
17
18
 
# File 'lib/std_msgs/Float64.rb', line 16

def has_header?
  false
end

#message_definition ⇒ Object 



20
21
22
23
 
# File 'lib/std_msgs/Float64.rb', line 20

def message_definition
  "float64 data
"
end

#serialize(buff) ⇒ Object

serialize message into buffer

Parameters:

  • buff (IO) —

    buffer



52
53
54
55
56
57
58
59
 
# File 'lib/std_msgs/Float64.rb', line 52

def serialize(buff)
  begin
    buff.write(@@struct_d.pack(@data))
  rescue => exception
    raise "some erro in serialize: #{exception}"

  end
end