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Contents
# frozen_string_literal: true
module Coltrane
module Cli
# Interfaces commands with the scales functionality
class Scale
def self.parse(str)
*scale_name, tone = str.split('-')
Coltrane::Scale.fetch(scale_name.join('_'), tone)
end
def self.find(notes: [], chords: [])
if notes.any?
puts "\nSearching for scales containing #{notes.join(', ')}:\n\n"
notes = NoteSet[*notes]
elsif chords.any?
puts "\nSearching for scales containing #{chords.join(', ')}:\n\n"
notes = chords.reduce(NoteSet[]) do |memo, c|
memo + Coltrane::Chord.new(name: c).notes
end
else raise BadFindScales
end
render_search(notes)
puts "\nUnderlined means the scale has all notes"
end
def self.render_search(searched_notes)
search = Coltrane::Scale.having_notes(searched_notes)
output = []
scale_width = search.results.keys.map(&:size).max
search.results.each do |name, scales_by_tone|
output << name.ljust(scale_width + 1, ' ')
scales_by_tone.each do |tone_number, notes|
p = (notes.size.to_f / searched_notes.size) * 100
l = p == 100 ? p : (p + 20) * 0.4
und = p == 100 ? :underline : nil
color = Color::HSL.new(30, p, l / 2).html
output << Paint["#{Note[tone_number].name}(#{notes.size})", color, und]
output << ' '
end
output << "\n"
end
puts output.join
end
def initialize(scale, on: :text, flavor: 'degrees')
desc = "This is the #{scale.tone.name} #{scale.name} scale:"
Coltrane::Cli::Notes.new(scale.notes, on: on, desc: desc, flavor: flavor)
end
end
end
end
Version data entries
15 entries across 15 versions & 1 rubygems