class Gauguin::ImageRecolorer

Public Class Methods

new(image) click to toggle source
# File lib/gauguin/image_recolorer.rb, line 3
def initialize(image)
  @image = image.dup
end

Public Instance Methods

recolor(new_colors) click to toggle source
# File lib/gauguin/image_recolorer.rb, line 7
def recolor(new_colors)
  columns = @image.columns
  rows = @image.rows

  new_image = Image.blank(columns, rows)

  (0...columns).each do |column|
    (0...rows).each do |row|
      image_pixel = @image.pixel_color(column, row)
      next if image_pixel.transparent?

      color = Color.new(*image_pixel.to_rgb)
      new_color = new_colors[color]

      next unless new_color

      new_image.pixel_color(column, row, new_color.to_s)
    end
  end
  new_image
end