Class: Artascii::Image

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

Constant Summary collapse

MAX_BRIGHTNESS = 
255

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path, resize_percent = 100) ⇒ Image

Returns a new instance of Image.



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# File 'lib/artascii.rb', line 12

def initialize(path, resize_percent=100)
  @image = MiniMagick::Image.open(path)
  @height = @image.height
  @width = @image.width
  @matrix = @image.resize resize_percent
  self
end

Instance Attribute Details

#height ⇒ Object (readonly)

Returns the value of attribute height.



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# File 'lib/artascii.rb', line 8

def height
  @height
end

#width ⇒ Object (readonly)

Returns the value of attribute width.



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# File 'lib/artascii.rb', line 8

def width
  @width
end

Instance Method Details

#get_ascii_mx(matrix) ⇒ Object 



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# File 'lib/artascii.rb', line 34

def get_ascii_mx(matrix)
  ascii_mx = Array.new
  matrix.each do |line|
    line_mx = Array.new
    line.each { |pixel| line_mx.append(to_char(pixel)) }
    ascii_mx.append(line_mx)
  end
  # print_mx(ascii_mx)
  ascii_mx
end

#get_brightness_mx(matrix) ⇒ Object 



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# File 'lib/artascii.rb', line 24

def get_brightness_mx(matrix)
  bright_mx = Array.new
  matrix.each do |line|
    line_mx = Array.new
    line.each { |pixel| line_mx.append(pixel.sum/pixel.length) }
    bright_mx.append(line_mx)
  end
  bright_mx
end

#get_pixels ⇒ Object 



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# File 'lib/artascii.rb', line 20

def get_pixels
  @image.get_pixels
end

#modify_ascii_mx ⇒ Object 



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# File 'lib/artascii.rb', line 45

def modify_ascii_mx
  ascii_mx = Array.new
  @matrix.each do |line|
    line_mx = Array.new
    line.each { |pixel| yield }
    ascii_mx.append(line_mx)
  end
  ascii_mx
end

#print_to_file(matrix, path = nil) ⇒ Object 



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# File 'lib/artascii.rb', line 55

def print_to_file(matrix, path=nil)
  File.open(path, "w") do |f|
    matrix.each { |line| f.puts line.join() + '\n'}  
  end 
end

#to_char(brightness) ⇒ Object 



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# File 'lib/artascii.rb', line 61

def to_char(brightness)
  char_s = "`^\",:;Il!i~+_-?][}{1)(|\\/tfjrxnuvczXYUJCLQ0OZmwqpdbkhao*#MW&8%B@$".freeze
  char_arr = char_s.split("")
  index = (brightness * char_arr.length)/MAX_BRIGHTNESS - 1
  char_arr[index] * 3
end