Class: Fretboard::Builder

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(tuning, number_of_frets = 12) ⇒ Builder 



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# File 'lib/fretboard/builder.rb', line 17

def initialize(tuning, number_of_frets = 12)
  @tuning = tuning.upcase.to_sym
  @number_of_frets = number_of_frets

  @data = {}
end

Instance Attribute Details

#data ⇒ Object (readonly)

fretboard = Fretboard::Builder.new(:standart) fretboard = Fretboard::Builder.standart fretboard.build fretboard.data fretboard.draw



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# File 'lib/fretboard/builder.rb', line 11

def data
  @data
end

Class Method Details

.standart(number_of_frets = 12) ⇒ Object 



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# File 'lib/fretboard/builder.rb', line 13

def self.standart(number_of_frets = 12)
  new(:standart, number_of_frets)
end

Instance Method Details

#build ⇒ Object 



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# File 'lib/fretboard/builder.rb', line 24

def build
  unless Fretboard::Constants::GUITAR_TUNINGS.key?(@tuning)
    puts 'Unable to detect guitar tuning'
    return
  end

  tuning = Fretboard::Constants::GUITAR_TUNINGS[@tuning]
  strings = tuning[:STRINGS]
  number_of_strings = strings.size

  (1..number_of_strings).each do |string_number|
    puts
    puts "String: #{string_number}"
    puts

    current_note = strings[string_number][:NOTE]

    @data[string_number] = {}

    puts "Fret: 0 (#{current_note})"

    @data[string_number][0] = current_note

    (1..@number_of_frets).each do |fret|
      next_note = Fretboard::Note.next_for(
        current_note,
        sharp_or_flat: :both,
        formated: true
      )

      puts "Fret: #{fret} (#{next_note})"

      @data[string_number][fret] = next_note

      current_note = next_note
    end
  end

  puts
  puts 'done'
end

#draw ⇒ Object 



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# File 'lib/fretboard/builder.rb', line 66

def draw
  headings = []
  rows = []

  @data.each_pair do |string_number, string_notes|
    row = []

    headings << '№'
    row << string_number

    headings << 0
    row << string_notes[0]

    string_notes.except(0).each_pair do |fret, note|
      headings << fret
      row << note
    end

    rows << row
  end

  table = Terminal::Table.new(
    headings: headings.uniq,
    rows: rows,
    style: { border_x: '~', border_i: '~' }
  )

  puts table

  nil
end