Class: Myo::Chamber

Inherits:
Object
  • Object
show all
Defined in:
lib/myo/client.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(socket_url) ⇒ Chamber 



4
5
6
7
8
 
# File 'lib/myo/client.rb', line 4

def initialize(socket_url)
  @socket_url = socket_url
  @callbacks_ = {}
  @pool_      = {}
end

Instance Attribute Details

#callbacks_ ⇒ Object

Returns the value of attribute callbacks_.



2
3
4
 
# File 'lib/myo/client.rb', line 2

def callbacks_
  @callbacks_
end

Instance Method Details

#getRoll ⇒ Object 



10
11
12
 
# File 'lib/myo/client.rb', line 10

def getRoll
  @pool_[:latest_orientation].accel.x
end

#start ⇒ Object 



14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
 
# File 'lib/myo/client.rb', line 14

def start
  EM.run do
    conn = EventMachine::WebSocketClient.connect(@socket_url)

    conn.callback do
      return unless @callbacks_[:connected]
      instance_eval(&@callbacks_[:connected])
    end

    conn.errback do |e|
      return unless @callbacks_[:error]
      instance_eval(e, &@callbacks_[:error])
    end

    conn.stream do |msg|
      conn.close_connection if msg.data == "done"

      event = JSON.parse(msg.data)[1]
      case event['type']
      when 'pose'
        break unless @callbacks_[:pose]
        pose = event['pose']
        instance_eval(@pool_[:prev_pose], :off, &@callbacks_[:pose]) if @pool_[:prev_pose]
        instance_eval(pose, :on, &@callbacks_[:pose])
        @pool_[:prev_pose] = pose
      when 'orientation'
        break unless @callbacks_[:periodic]
        e = OpenStruct.new({
          :accel => OpenStruct.new({
            :x => event['accelerometer'][0],
            :y => event['accelerometer'][1],
            :z => event['accelerometer'][2]
          }),
          :gyro => OpenStruct.new({
            :x => event['gyroscope'][0],
            :y => event['gyroscope'][1],
            :z => event['gyroscope'][2]
          }),
          :orientation => OpenStruct.new(event['orientation'])
        })
        @pool_[:latest_orientation] = e
        instance_eval(e, &@callbacks_[:periodic])
      end
    end

    conn.disconnect do
      EM::stop_event_loop
    end
  end
end