class Musicality::Rhythm

A rhythm based on an array of durations. @note Rests are represented by negative durations.

Attributes

durations[R]
durations_sum[R]

Public Class Methods

new(durations) click to toggle source
# File lib/musicality/composition/model/rhythm.rb, line 8
def initialize durations
  if durations.find {|x| x.zero? }
    raise ArgumentError, "rhythm contains duration(s) that are zero"
  end
  @durations = durations.clone.freeze
  @durations_sum = @durations.inject(0) {|sum,x| sum + x.abs}
end

Public Instance Methods

to_notes(pitch) click to toggle source
# File lib/musicality/composition/model/rhythm.rb, line 16
def to_notes pitch
  @durations.map do |dur|
    if dur.negative?
      Note.new(-dur)
    else
      Note.new(dur, pitch)
    end
  end
end