Class: Domotics::Core::Dimmer

Inherits:
Element show all
Defined in:
lib/domotics/core/element/dimmer.rb

Constant Summary collapse

DEFAULT_LEVEL = 
0
MIN_LEVEL = 
0
MAX_LEVEL = 
255
MAX_STEPS = 
128
STEP_DELAY = 
1.0 / MAX_STEPS
STEP_SIZE = 
((MAX_LEVEL + 1) / MAX_STEPS.to_f).round

Instance Attribute Summary

Attributes inherited from Element

#device, #name, #room, #type

Instance Method Summary collapse

Methods inherited from Element

data=, #image, #info, #load_driver, #state_changed, #to_s, #verbose_state

Constructor Details

#initialize(args = {}) ⇒ Dimmer

Returns a new instance of Dimmer.



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# File 'lib/domotics/core/element/dimmer.rb', line 11

def initialize(args = {})
  @type = args[:type] || :dimmer
  @fade_lock = Mutex.new
  @fade_thread = nil
  args[:driver] = "PWMPin"
  load_driver args
  super
end

Instance Method Details

#bright(value = nil) ⇒ Object

Increase brightness level (value 0-100%)



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# File 'lib/domotics/core/element/dimmer.rb', line 45

def bright(value = nil)
  if value
    set_state value * MAX_LEVEL / 100
  else
    set_state state + STEP_SIZE
  end
end

#dim(value = nil) ⇒ Object

Decrease brightness level (value 0-100%)



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# File 'lib/domotics/core/element/dimmer.rb', line 37

def dim(value = nil)
  if value
    set_state value * MAX_LEVEL / 100
  else
    set_state state - STEP_SIZE
  end
end

#fade_to(value = DEFAULT_LEVEL, speed_divisor = 1) ⇒ Object 



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# File 'lib/domotics/core/element/dimmer.rb', line 57

def fade_to(value = DEFAULT_LEVEL, speed_divisor = 1)
  @fade_lock.synchronize do
    @fade_thread.kill if @fade_thread and @fade_thread.alive?
    @fade_thread = Thread.new do
      op = (value - state) >= 0 ? :+ : :-
      steps = ((value - state).abs / STEP_SIZE.to_f).round
      steps.times do
        set_state(state.public_send(op, STEP_SIZE), kill_fader: :no)
        sleep speed_divisor * STEP_DELAY
      end
      @fade_lock.synchronize { @fade_thread = nil }
    end
  end
  @fade_thread
end

#off ⇒ Object 



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# File 'lib/domotics/core/element/dimmer.rb', line 53

def off
  set_state MIN_LEVEL unless state == MIN_LEVEL
end

#set_state(value = DEFAULT_LEVEL, opt = {}) ⇒ Object 



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# File 'lib/domotics/core/element/dimmer.rb', line 24

def set_state(value = DEFAULT_LEVEL, opt = {})
  unless opt[:kill_fader] == :no
    @fade_lock.synchronize do
      @fade_thread.kill if @fade_thread and @fade_thread.alive?
    end
  end
  if value.is_a? Integer
    value = MIN_LEVEL if value < MIN_LEVEL
    value = MAX_LEVEL if value > MAX_LEVEL
  end
  super value
end

#state ⇒ Object 



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# File 'lib/domotics/core/element/dimmer.rb', line 20

def state
  st = super
  st.is_a?(Integer) ? st : 0
end