Sha256: aefacd5e8a6459e435d95dc4ea7655c9e06f633dff9ea11775ef3b7175150f68
Contents?: true
Size: 633 Bytes
Versions: 9
Compression:
Stored size: 633 Bytes
Contents
module RBMusic
class Scale
attr_reader :key
attr_reader :degrees
def initialize(key, name)
@scale_name = name.to_sym
raise ArgumentError unless NOTES.has_key?(key)
raise ArgumentError unless SCALES.has_key?(@scale_name)
@key = key
@degrees = [:unison] + SCALES[@scale_name]
end
def degree_count
@degree_count ||= @degrees.size
end
alias_method :size, :degree_count
def name
@name ||= "#{key} #{human_scale_name}"
end
private
def human_scale_name
@scale_name.to_s.split("_").map { |word| word.capitalize }.join(" ")
end
end
end
Version data entries
9 entries across 9 versions & 2 rubygems