Class: Iroki::Color::SingleGroupGradient

Inherits:
Gradient
  • Object
show all
Defined in:
lib/iroki/color/single_group_gradient.rb

Instance Attribute Summary collapse

Attributes inherited from Gradient

#color_hex_codes, #lumins, #max_lumin, #min_lumin, #samples, #single_color

Instance Method Summary collapse

Methods inherited from Gradient

#counts_to_rabunds, #patterns, #rabunds_to_lumins, #scale, #scale_reverse

Constructor Details

#initialize(samples, counts, single_color = false, min_lumin, max_lumin) ⇒ SingleGroupGradient

Returns a new instance of SingleGroupGradient.



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# File 'lib/iroki/color/single_group_gradient.rb', line 24

def initialize samples,
               counts,
               single_color=false,
               min_lumin,
               max_lumin

  abort_unless samples.count == counts.count,
               "Samples (#{samples.count}) and counts " +
               "#{counts.count} are different size."

  @min_lumin = min_lumin
  @max_lumin = max_lumin

  @single_color = single_color
  @samples = samples
  @counts = counts
  @rel_abunds = counts_to_rabunds counts
  @lumins = rabunds_to_lumins @rel_abunds

  if @single_color
    @color_hex_codes = single_color_gradient_hex_codes
  else
    @color_hex_codes = two_color_gradient_hex_codes
  end
end

Instance Attribute Details

#counts ⇒ Object

Returns the value of attribute counts.



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# File 'lib/iroki/color/single_group_gradient.rb', line 22

def counts
  @counts
end

#rel_abunds ⇒ Object

Returns the value of attribute rel_abunds.



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# File 'lib/iroki/color/single_group_gradient.rb', line 22

def rel_abunds
  @rel_abunds
end

Instance Method Details

#single_color_gradient_hex_codes ⇒ Object 



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# File 'lib/iroki/color/single_group_gradient.rb', line 63

def single_color_gradient_hex_codes
  @rel_abunds.zip(@lumins).map do |rel_abund, lumin|
    amt_of_orig_color =
      scale rel_abund, new_min=@min_lumin, new_max=@max_lumin

    col =
      Iroki::Color::DARK_GREEN.lighten_by amt_of_orig_color

    col.html
  end
end

#two_color_gradient_hex_codes ⇒ Object 



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# File 'lib/iroki/color/single_group_gradient.rb', line 50

def two_color_gradient_hex_codes
  @rel_abunds.map.with_index do |rel_abund, idx|
    lumin = @lumins[idx]

    col =
      Iroki::Color::GREEN.mix_with Iroki::Color::BLUE, rel_abund

    col.luminosity = lumin

    col.html
  end
end