Class: Clef::Notation::Beam

Inherits:
Object
  • Object
show all
Defined in:
lib/clef/notation/beam.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(notes) ⇒ Beam

Returns a new instance of Beam.

Parameters:

Raises:

  • (ArgumentError) 


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# File 'lib/clef/notation/beam.rb', line 9

def initialize(notes)
  raise ArgumentError, "beam requires at least two notes" if notes.length < 2

  @notes = notes
end

Instance Attribute Details

#notes ⇒ Object (readonly)

Returns the value of attribute notes.



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# File 'lib/clef/notation/beam.rb', line 6

def notes
  @notes
end

Instance Method Details

#level ⇒ Integer

Returns:

  • (Integer) 


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# File 'lib/clef/notation/beam.rb', line 16

def level
  shortest = notes.map { |note| note.duration.base_value }.min
  return 1 if shortest >= Rational(1, 8)
  return 2 if shortest >= Rational(1, 16)

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end