Class: Stave::Core::NoteCollection
- Inherits:
-
Object
- Object
- Stave::Core::NoteCollection
show all
- Defined in:
- lib/stave/core/note_collection.rb
Instance Attribute Summary collapse
Class Method Summary
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Instance Method Summary
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Constructor Details
Returns a new instance of NoteCollection.
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# File 'lib/stave/core/note_collection.rb', line 6
def initialize(root:, type:)
@root = root
@type = type
end
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Instance Attribute Details
#root ⇒ Object
Returns the value of attribute root.
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# File 'lib/stave/core/note_collection.rb', line 4
def root
@root
end
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#type ⇒ Object
Returns the value of attribute type.
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# File 'lib/stave/core/note_collection.rb', line 4
def type
@type
end
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Class Method Details
.inherited(note_class) ⇒ Object
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# File 'lib/stave/core/note_collection.rb', line 38
def self.inherited(note_class)
note_class.type_class.variants.each do |type|
self.class.define_method(
:"#{type.variant}_from", ->(root) { new(type:, root:) }
)
end
end
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.type_class ⇒ Object
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# File 'lib/stave/core/note_collection.rb', line 34
def self.type_class
const_get("#{self}Type")
end
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Instance Method Details
#note_at(position) ⇒ Object
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# File 'lib/stave/core/note_collection.rb', line 15
def note_at(position)
return if position.zero? || position.negative?
position -= 7 while position >= 8
notes[position - 1]
end
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#notes ⇒ Object
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# File 'lib/stave/core/note_collection.rb', line 11
def notes
type.intervals.map { |interval| root + interval }
end
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#to_h ⇒ Object
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# File 'lib/stave/core/note_collection.rb', line 27
def to_h
{
self.class.type_class.class_key => { variant: type.variant },
root: root.variant
}
end
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#uniq ⇒ Object
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# File 'lib/stave/core/note_collection.rb', line 23
def uniq
notes.uniq(&:variant)
end
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