Class: RPiRGB

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

Overview

rgb = RPiRGB.new(%w(4 17 27), presets: [100,100,0]) rgb.color = ‘white’ sleep 2 rgb.color = ‘purple’ sleep 2 rgb.color = ‘green’

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(pins, brightness: 100, smooth: false, presets: nil) ⇒ RPiRGB

Returns a new instance of RPiRGB.



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# File 'lib/rpi_rgb.rb', line 26

def initialize(pins, brightness: 100, smooth: false, presets: nil)
  
  @red, @green, @blue = pins.map do |x| 
    RPiLed.new(x, brightness: brightness, smooth: smooth)
  end
  
  @brightness, @presets = brightness, presets 

end

Instance Attribute Details

#blue ⇒ Object (readonly)

Returns the value of attribute blue.



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# File 'lib/rpi_rgb.rb', line 24

def blue
  @blue
end

#brightness ⇒ Object

Returns the value of attribute brightness.



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# File 'lib/rpi_rgb.rb', line 23

def brightness
  @brightness
end

#green ⇒ Object (readonly)

Returns the value of attribute green.



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# File 'lib/rpi_rgb.rb', line 24

def green
  @green
end

#red ⇒ Object (readonly)

Returns the value of attribute red.



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# File 'lib/rpi_rgb.rb', line 24

def red
  @red
end

Instance Method Details

#colour ⇒ Object Also known as: color 



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# File 'lib/rpi_rgb.rb', line 75

def colour()
  @colour
end

#colour=(val) ⇒ Object Also known as: color= 



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# File 'lib/rpi_rgb.rb', line 46

def colour=(val)
  
  @colour = val

  case val

  when 'red'
    mix 100, 0, 0

  when 'green'
    mix 0, 100, 0

  when 'blue'
    mix 0, 0, 100

  when 'white'
    mix 100, 100, 100

  else
    
    return unless @presets

    preset = @presets[val.to_sym]

    mix(preset) if preset

  end
end

#mix(*values) ⇒ Object 



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# File 'lib/rpi_rgb.rb', line 82

def mix(*values)
  
  r, g, b = values.flatten.map {|v| v / (100 / @brightness ) }
  
  [@red, @green, @blue].each(&:on)
  
  red.brightness, green.brightness, blue.brightness = r, g, b
end

#off ⇒ Object 



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# File 'lib/rpi_rgb.rb', line 91

def off()
  [@red, @green, @blue].each(&:off)
end