Class: Gauguin::ImageRecolorer

Inherits:
Object
  • Object
show all
Defined in:
lib/gauguin/image_recolorer.rb

Instance Method Summary collapse

Constructor Details

#initialize(image) ⇒ ImageRecolorer

Returns a new instance of ImageRecolorer.



3
4
5
 
# File 'lib/gauguin/image_recolorer.rb', line 3

def initialize(image)
  @image = image.dup
end

Instance Method Details

#recolor(new_colors) ⇒ Object 



7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
 
# 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