class BinDot2BrailleGraph
Constants
- LEFT_SHIFT_TABLE
- VERSION
Public Class Methods
convert(width, height, binary)
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# File lib/bindot2braillegraph.rb, line 26 def self.convert(width, height, binary) if width % 2 != 0 || height % 4 != 0 nil else table = [] vertical_char_num = height / 4 horizontal_char_num = width / 2 (0..(vertical_char_num - 1)).each do |v_pos| row = [] (0..(horizontal_char_num - 1)).each do |h_pos| braille_binary = binary.slice((v_pos * 4 ) * width + h_pos * 2, 2) + binary.slice((v_pos * 4 + 1) * width + h_pos * 2, 2) + binary.slice((v_pos * 4 + 2) * width + h_pos * 2, 2) + binary.slice((v_pos * 4 + 3) * width + h_pos * 2, 2) row << @@num_to_braille_graph[braille_binary.to_i(2)] end table << row end table end end