class Color::CMYK
Public Class Methods
cgats_color_rep()
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# File lib/quadtone/color/cmyk.rb, line 14 def self.cgats_color_rep 'CMYKcmk1k' end
cgats_fields()
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# File lib/quadtone/color/cmyk.rb, line 9 def self.cgats_fields %w{CMYKcmk1k_C CMYKcmk1k_M CMYKcmk1k_Y CMYKcmk1k_K CMYKcmk1k_c CMYKcmk1k_m CMYKcmk1k_k CMYKcmk1k_1k} end
component_names()
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# File lib/quadtone/color/cmyk.rb, line 5 def self.component_names [:c, :m, :y, :k, :lc, :lm, :lk, :llk] end
Public Instance Methods
c()
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# File lib/quadtone/color/cmyk.rb, line 18 def c @components[0] end
k()
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# File lib/quadtone/color/cmyk.rb, line 30 def k @components[3] end
lc()
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# File lib/quadtone/color/cmyk.rb, line 34 def lc @components[4] end
lk()
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# File lib/quadtone/color/cmyk.rb, line 42 def lk @components[6] end
llk()
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# File lib/quadtone/color/cmyk.rb, line 46 def llk @components[7] end
lm()
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# File lib/quadtone/color/cmyk.rb, line 38 def lm @components[5] end
m()
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# File lib/quadtone/color/cmyk.rb, line 22 def m @components[1] end
to_a()
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# File lib/quadtone/color/cmyk.rb, line 106 def to_a @components end
to_cgats()
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# File lib/quadtone/color/cmyk.rb, line 50 def to_cgats { 'CMYKcmk1k_C' => c, 'CMYKcmk1k_M' => m, 'CMYKcmk1k_Y' => y, 'CMYKcmk1k_K' => k, 'CMYKcmk1k_c' => lc, 'CMYKcmk1k_m' => lm, 'CMYKcmk1k_k' => lk, 'CMYKcmk1k_1k' => llk, } end
to_cmy()
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# File lib/quadtone/color/cmyk.rb, line 77 def to_cmy # after http://www.easyrgb.com/index.php?X=MATH&H=14#text14 c0, m0, y0, k0 = *to_cmyk c0 /= 100.0 m0 /= 100.0 y0 /= 100.0 k0 /= 100.0 c0 = (c0 * (1 - k0)) + k0 m0 = (m0 * (1 - k0)) + k0 y0 = (y0 * (1 - k0)) + k0 Color::CMYK.new([c0 * 100, m0 * 100, y0 * 100]) end
to_cmyk()
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# File lib/quadtone/color/cmyk.rb, line 63 def to_cmyk # estimates for light & light-light inks l_factor = 0.5 ll_factor = 0.25 # first adjust for light inks c0 = c + (lc * l_factor) m0 = m + (lm * l_factor) y0 = y k0 = k + (lk * l_factor) + (llk * ll_factor) Color::CMYK.new([c0, m0, y0, k0]) end
to_lab()
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# File lib/quadtone/color/cmyk.rb, line 98 def to_lab to_xyz.to_lab end
to_rgb()
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# File lib/quadtone/color/cmyk.rb, line 93 def to_rgb cmy = to_cmy Color::RGB.new([1 - (cmy.c / 100), 1 - (cmy.m / 100), 1 - (cmy.y / 100)]) end
to_xyz()
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# File lib/quadtone/color/cmyk.rb, line 102 def to_xyz to_rgb.to_xyz end
y()
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# File lib/quadtone/color/cmyk.rb, line 26 def y @components[2] end