Class: CheekyPi::Light

Inherits:
Object
  • Object
show all
Defined in:
lib/cheeky-pi/light.rb

Constant Summary collapse

MAX = 
90

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ Light

Initialize with a path and optional color



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# File 'lib/cheeky-pi/light.rb', line 11

def initialize(path)
  @light = LightInterface.new(path)
  @last_color = @light.fetch
end

Instance Method Details

#animation ⇒ Object 



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# File 'lib/cheeky-pi/light.rb', line 16

def animation
  @animation
end

#animation=(new_animation) ⇒ Object 



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# File 'lib/cheeky-pi/light.rb', line 20

def animation=(new_animation)
  stop_animation
  @animation = new_animation
end

#building ⇒ Object 



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# File 'lib/cheeky-pi/light.rb', line 29

def building
  start_color = [5, 5, 25]
  end_color = [10, 15, MAX]

  transition!(start_color).then do
    throb!(3, start_color, end_color)
  end
end

#color ⇒ Object 



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# File 'lib/cheeky-pi/light.rb', line 89

def color
  set Color.create(color)
end

#failure ⇒ Object 



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# File 'lib/cheeky-pi/light.rb', line 38

def failure
  start_color = [30, 0, 0]
  end_color = [MAX, 25, 5]

  transition!(start_color).then do
    throb!(1, start_color, end_color)
  end
end

#off ⇒ Object 



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# File 'lib/cheeky-pi/light.rb', line 51

def off
  transition!(COLOR[:black])
end

#set(color) ⇒ Object

Set light to a given color



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# File 'lib/cheeky-pi/light.rb', line 94

def set(color)
  @last_color = color
  @light.set(color)
end

#stop_animation ⇒ Object 



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# File 'lib/cheeky-pi/light.rb', line 25

def stop_animation
  self.animation.halt if self.animation
end

#success ⇒ Object 



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# File 'lib/cheeky-pi/light.rb', line 47

def success
  transition!([0, MAX, 0])
end

#throb(period, from, to) ⇒ Object 



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# File 'lib/cheeky-pi/light.rb', line 55

def throb (period, from, to)
  Animation::Throb.new nil, self, {
    from: Color.create(from),
    to: Color.create(to),
    period: period,
    type: :sine
  }
end

#throb!(period, from, to) ⇒ Object 



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# File 'lib/cheeky-pi/light.rb', line 64

def throb! (period, from, to)
  self.animation = throb(period, from, to)

  self.animation.promise
end

#transition(to, duration = 2) ⇒ Object 



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# File 'lib/cheeky-pi/light.rb', line 71

def transition(to, duration=2)
  to = Color.create(to)

  #Set color transition time based on distance, with a maximum of 2 seconds
  #(number from 0-255)
  distance = @last_color.distance(to)
  seconds = duration * [distance, MAX].max / MAX

  Animation::Fade.new seconds, self, { from: @last_color, to: to }
end

#transition!(to) ⇒ Object 



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# File 'lib/cheeky-pi/light.rb', line 83

def transition!(to)
  self.animation = transition to

  self.animation.promise
end