Class: Hammelin::NotesRange

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/hammelin/notes_range.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(array) ⇒ NotesRange

Returns a new instance of NotesRange.



9
10
11
 
# File 'lib/hammelin/notes_range.rb', line 9

def initialize(array)
  @notes = array
end

Instance Attribute Details

#notes ⇒ Object

Returns the value of attribute notes.



7
8
9
 
# File 'lib/hammelin/notes_range.rb', line 7

def notes
  @notes
end

Class Method Details

.from_array(array) ⇒ Object 



17
18
19
 
# File 'lib/hammelin/notes_range.rb', line 17

def self.from_array(array)
  NotesRange.new(array)
end

.from_range(from, to) ⇒ Object 



13
14
15
 
# File 'lib/hammelin/notes_range.rb', line 13

def self.from_range(from,to)
  NotesRange.new(transverse_notes(from,to))
end

Instance Method Details

#decrease_octave(times = 1) ⇒ Object 



53
54
55
56
57
 
# File 'lib/hammelin/notes_range.rb', line 53

def decrease_octave(times=1)
  notes = @notes.map {|note| note.decrease_octave(times)}

  NotesRange.new(notes)      
end

#downto(value) ⇒ Object Also known as: upto

downto and upto are just some sintactic sugar for expanding the range to a new value. It will create a new NotesRange object with the last Note and then will figure out how to get to the newest one.



41
42
43
 
# File 'lib/hammelin/notes_range.rb', line 41

def downto(value)
  NotesRange.from_range(last,value)
end

#each ⇒ Object 



21
22
23
24
25
26
27
 
# File 'lib/hammelin/notes_range.rb', line 21

def each
  if block_given? 
    @notes.each {|note| yield note} 
  else 
    to_enum(:each) 
  end
end

#increase_octave(times = 1) ⇒ Object 



47
48
49
50
51
 
# File 'lib/hammelin/notes_range.rb', line 47

def increase_octave(times=1)
  notes = @notes.map {|note| note.increase_octave(times)}

  NotesRange.new(notes)
end

#music_string ⇒ Object 



59
60
61
 
# File 'lib/hammelin/notes_range.rb', line 59

def music_string
  @notes.map{|i| i.music_string }.join(" ")
end

#play ⇒ Object 



33
34
35
36
 
# File 'lib/hammelin/notes_range.rb', line 33

def play
  Hammelin.play_string music_string
  self
end

#reverse ⇒ Object 



29
30
31
 
# File 'lib/hammelin/notes_range.rb', line 29

def reverse
  @notes.reverse
end