Class: Color

Inherits:
Object
  • Object
show all
Defined in:
lib/rgss3/color.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Color

Returns a new instance of Color.



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# File 'lib/rgss3/color.rb', line 6

def initialize(*args)
  case args.size
  when 0
    empty
  when 3, 4
    set(*args)
  else
    raise ArgumentError
  end
end

Instance Attribute Details

#gosu_color ⇒ Object

Returns the value of attribute gosu_color.



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# File 'lib/rgss3/color.rb', line 4

def gosu_color
  @gosu_color
end

Class Method Details

._load(s) ⇒ Object 



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# File 'lib/rgss3/color.rb', line 118

def self._load(s)
  new(*s.unpack('d4'))
end

.from_gosu(gosu_color) ⇒ Object 



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# File 'lib/rgss3/color.rb', line 159

def self.from_gosu(gosu_color)
  color = allocate
  color.gosu_color = gosu_color
  color
end

.from_pixel(pixel) ⇒ Object 



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# File 'lib/rgss3/color.rb', line 137

def self.from_pixel(pixel)
  new(*rgba_from_pixel(pixel))
end

.rgba_from_int(rgba) ⇒ Object 



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# File 'lib/rgss3/color.rb', line 152

def self.rgba_from_int(rgba)
  (0...4).each_with_object(Array.new(4)) do |i, result|
    result[3 - i] = rgba & 0xff
    rgba >>= 8
  end
end

.rgba_from_pixel(pixel) ⇒ Object 



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# File 'lib/rgss3/color.rb', line 141

def self.rgba_from_pixel(pixel)
  # "#RRGGBBAA"
  rgba_hex = pixel.to_color(Magick::AllCompliance, true, 8, true)
  rgba = rgba_hex[1, 8].to_i(16)
  rgba_from_int(rgba)
end

.try_convert(color) ⇒ Object 



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# File 'lib/rgss3/color.rb', line 122

def self.try_convert(color)
  case color
  when Color
    color
  when String
    from_pixel Magick::Pixel.from_color(color)
  when Integer
    from_int(color)
  when Magick::Pixel
    from_pixel(color)
  when Gosu::Color
    from_gosu(color)
  end
end

Instance Method Details

#_dump(d = 0) ⇒ Object 



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# File 'lib/rgss3/color.rb', line 114

def _dump(d = 0)
  [red, green, blue, alpha].pack('d4')
end

#alpha ⇒ Object 



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# File 'lib/rgss3/color.rb', line 46

def alpha
  @gosu_color.alpha.to_f
end

#alpha=(value) ⇒ Object 



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# File 'lib/rgss3/color.rb', line 82

def alpha=(value)
  @gosu_color.alpha = value
end

#alpha_i ⇒ Object 



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# File 'lib/rgss3/color.rb', line 62

def alpha_i
  @gosu_color.alpha
end

#blue ⇒ Object 



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# File 'lib/rgss3/color.rb', line 38

def blue
  @gosu_color.blue.to_f
end

#blue=(value) ⇒ Object 



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# File 'lib/rgss3/color.rb', line 74

def blue=(value)
  @gosu_color.blue = value
end

#blue_i ⇒ Object 



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# File 'lib/rgss3/color.rb', line 54

def blue_i
  @gosu_color.blue
end

#empty ⇒ Object 



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# File 'lib/rgss3/color.rb', line 66

def empty
  @gosu_color = Gosu::Color::NONE
end

#from_int(rgba) ⇒ Object 



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# File 'lib/rgss3/color.rb', line 148

def from_int(rgba)
  new(*rgba_from_int(rgba))
end

#green ⇒ Object 



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# File 'lib/rgss3/color.rb', line 42

def green
  @gosu_color.green.to_f
end

#green=(value) ⇒ Object 



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# File 'lib/rgss3/color.rb', line 78

def green=(value)
  @gosu_color.green = value
end

#green_i ⇒ Object 



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# File 'lib/rgss3/color.rb', line 58

def green_i
  @gosu_color.green
end

#red ⇒ Object 



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# File 'lib/rgss3/color.rb', line 34

def red
  @gosu_color.red.to_f
end

#red=(value) ⇒ Object 



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# File 'lib/rgss3/color.rb', line 70

def red=(value)
  @gosu_color.red = value
end

#red_i ⇒ Object 



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# File 'lib/rgss3/color.rb', line 50

def red_i
  @gosu_color.red
end

#set(*args) ⇒ Object 



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# File 'lib/rgss3/color.rb', line 17

def set(*args)
  case args.size
  when 1
    if args[0].is_a?(Color)
      @gosu_color = args[0].to_gosu
    else
      raise ArgumentError
    end
  when 3
    @gosu_color = Gosu::Color.rgba(*args.map(&:round), 255)
  when 4
    @gosu_color = Gosu::Color.rgba(*args.map(&:round))
  else
    raise ArgumentError
  end
end

#to_a ⇒ Object Also known as: rgba 



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# File 'lib/rgss3/color.rb', line 86

def to_a
  [red_i, green_i, blue_i, alpha_i]
end

#to_fa ⇒ Object 



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# File 'lib/rgss3/color.rb', line 98

def to_fa
  [red, green, blue, alpha]
end

#to_gosu ⇒ Object 



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# File 'lib/rgss3/color.rb', line 102

def to_gosu
  @gosu_color.dup
end

#to_pixel ⇒ Object 



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# File 'lib/rgss3/color.rb', line 106

def to_pixel
  Magick::Pixel.from_color(to_rmagick_color)
end

#to_rmagick_color ⇒ Object 



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# File 'lib/rgss3/color.rb', line 110

def to_rmagick_color
  "rgba(#{red_i},#{green_i},#{blue_i},#{alpha_i})"
end

#to_s ⇒ Object Also known as: inspect 



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# File 'lib/rgss3/color.rb', line 92

def to_s
  format '(%.6f, %.6f, %.6f, %.6f)', red, green, blue, alpha
end