class Viridis::Colors
Constants
- SUPPORTED_PALLETS
Attributes
palette[R]
palette_length[R]
Public Class Methods
new(palette)
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# File lib/viridis/colors.rb, line 6 def initialize(palette) raise InvalidPaletteError unless SUPPORTED_PALLETS.include?(palette) @palette = colors(COLLOR_PALETTES[palette.to_sym]) @palette_length = @palette.count.to_f end
Public Instance Methods
color(t)
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# File lib/viridis/colors.rb, line 19 def color(t) palette[[0, [palette_length - 1, (t * palette_length).floor].min].max]; end
colors(specifier)
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# File lib/viridis/colors.rb, line 13 def colors(specifier) (specifier.length / 6 || 0).times.map do |index| "##{specifier[index * 6, 6]}" end end
range(steps)
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# File lib/viridis/colors.rb, line 23 def range(steps) steps.times.map { |index| color(index / [1, steps - 1].max.to_f ) } end