Class: Artoo::Drivers::Leapmotion::Hand

Inherits:
Object
  • Object
show all
Defined in:
lib/artoo/drivers/leapmotion/hand.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data) ⇒ Hand

Public: initialize

frame - params

Returns nil



21
22
23
24
25
26
27
28
29
30
 
# File 'lib/artoo/drivers/leapmotion/hand.rb', line 21

def initialize(data)
  data.each do |key, value|
    instance_variable_set "@#{key}", value
    self.class.send(
      :define_method,
      key.to_sym,
      lambda { instance_variable_get("@#{key}") }
    )
  end
end

Class Method Details

.list(data) ⇒ Object

Public: Iterates through LeapMotion frame data, extracting all Hand JSON into new Leapmotion::Hand objects.

data - a LeapMotion frame that may or may not contain hand data

Returns an array containing all Hands found in the frame



12
13
14
15
 
# File 'lib/artoo/drivers/leapmotion/hand.rb', line 12

def self.list(data)
  return [] unless data["hands"]
  data["hands"].map { |hand| Artoo::Drivers::Leapmotion::Hand.new hand }
end

Instance Method Details

#palm_x ⇒ Object

Public: Palm x position

Returns nil



35
36
37
 
# File 'lib/artoo/drivers/leapmotion/hand.rb', line 35

def palm_x
  palmPosition[0] if palmPosition
end

#palm_y ⇒ Object

Public: Palm y position

Returns nil



42
43
44
 
# File 'lib/artoo/drivers/leapmotion/hand.rb', line 42

def palm_y
  palmPosition[2] if palmPosition
end

#palm_z ⇒ Object

Public: Palm z position

Returns nil



49
50
51
 
# File 'lib/artoo/drivers/leapmotion/hand.rb', line 49

def palm_z
  palmPosition[1] if palmPosition
end

#rotation ⇒ Object

Public: Rotation

Returns nil



56
57
58
59
60
61
62
 
# File 'lib/artoo/drivers/leapmotion/hand.rb', line 56

def rotation
  {
    axis: @r[0],
    angle: @r[1],
    matrix: @r[2]
  }
end