Class: Std_msgs::ColorRGBA

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

Constant Summary collapse

@@struct_f4 = 
::ROS::Struct.new("f4")
@@struct_L = 
::ROS::Struct.new("L")
@@slot_types = 
['float32','float32','float32','float32']

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args = {}) ⇒ ColorRGBA

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

Parameters:

  • args (Hash) (defaults to: {}) —

    keyword for initializing values

Options Hash (args):

  • :r (float32) —

    initialize value

  • :g (float32) —

    initialize value

  • :b (float32) —

    initialize value

  • :a (float32) —

    initialize value



42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
 
# File 'lib/std_msgs/ColorRGBA.rb', line 42

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

Instance Attribute Details

#a ⇒ Object

Returns the value of attribute a.



28
29
30
 
# File 'lib/std_msgs/ColorRGBA.rb', line 28

def a
  @a
end

#b ⇒ Object

Returns the value of attribute b.



28
29
30
 
# File 'lib/std_msgs/ColorRGBA.rb', line 28

def b
  @b
end

#g ⇒ Object

Returns the value of attribute g.



28
29
30
 
# File 'lib/std_msgs/ColorRGBA.rb', line 28

def g
  @g
end

#r ⇒ Object

Returns the value of attribute r.



28
29
30
 
# File 'lib/std_msgs/ColorRGBA.rb', line 28

def r
  @r
end

Class Method Details

.md5sum ⇒ Object 



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

def self.md5sum
  "a29a96539573343b1310c73607334b00"
end

.type ⇒ Object 



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

def self.type
  "std_msgs/ColorRGBA"
end

Instance Method Details

#_get_types ⇒ String

internal API method

Returns:

  • (String) —

    Message type string.



68
69
70
 
# File 'lib/std_msgs/ColorRGBA.rb', line 68

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



85
86
87
88
89
90
91
92
93
94
95
96
 
# File 'lib/std_msgs/ColorRGBA.rb', line 85

def deserialize(str)

  begin
    end_point = 0
    start = end_point
    end_point += ROS::Struct::calc_size('f4')
    (@r, @g, @b, @a,) = @@struct_f4.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/ColorRGBA.rb', line 16

def has_header?
  false
end

#message_definition ⇒ Object 



20
21
22
23
24
25
26
27
 
# File 'lib/std_msgs/ColorRGBA.rb', line 20

def message_definition
  "float32 r
float32 g
float32 b
float32 a

"
end

#serialize(buff) ⇒ Object

serialize message into buffer

Parameters:

  • buff (IO) —

    buffer



74
75
76
77
78
79
80
81
 
# File 'lib/std_msgs/ColorRGBA.rb', line 74

def serialize(buff)
  begin
    buff.write(@@struct_f4.pack(@r, @g, @b, @a))
  rescue => exception
    raise "some erro in serialize: #{exception}"

  end
end