Contents

# Copyright 2016 Ryan Moore
# Contact: [e-mail]
#
# This file is part of Iroki.
#
# Iroki is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Iroki is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Iroki.  If not, see <http://www.gnu.org/licenses/>.

module Iroki
  module Color
    class Gradient
      attr_accessor :samples, :color_hex_codes, :lumins

      # scales [min, max] to [A, B]
      def self.scale x, new_min=0.05, new_max=0.9, old_min=0.0, old_max=1.0
        ((((new_max - new_min) * (x - old_min.to_f)) / (old_max - old_min)) + new_min)
      end

      # scales [old_min, old_max] to [new_max, new_min]
      def self.scale_reverse x, new_min=0, new_max=0, old_min=0.0, old_max=1.0
        (new_max - ((((new_max - new_min) * (x - old_min.to_f)) / (old_max - old_min)) + new_min)) + new_min
      end

      def patterns
        hash = {}
        @samples.zip(@color_hex_codes).each do |(sample, hexcode)|
          tag = Iroki::Color.get_tag hexcode
          hash[sample] = { label: tag, branch: tag }
        end

        hash
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
iroki-0.0.10	lib/iroki/color/gradient.rb
iroki-0.0.9	lib/iroki/color/gradient.rb