Class: HeadMusic::Style::Analysis

Inherits:
Object
  • Object
show all
Defined in:
lib/head_music/style/analysis.rb

Overview

An analysis of music according to a style guide.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(guide, voice) ⇒ Analysis

Returns a new instance of Analysis.



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# File 'lib/head_music/style/analysis.rb', line 8

def initialize(guide, voice)
  @guide = guide
  @voice = voice
end

Instance Attribute Details

#guide ⇒ Object (readonly)

Returns the value of attribute guide.



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# File 'lib/head_music/style/analysis.rb', line 6

def guide
  @guide
end

#voice ⇒ Object (readonly)

Returns the value of attribute voice.



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# File 'lib/head_music/style/analysis.rb', line 6

def voice
  @voice
end

Instance Method Details

#adherent? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/head_music/style/analysis.rb', line 28

def adherent?
  fitness == 1
end

#annotations ⇒ Object 



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# File 'lib/head_music/style/analysis.rb', line 18

def annotations
  @annotations ||= @guide.analyze(voice)
end

#fitness ⇒ Object 



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# File 'lib/head_music/style/analysis.rb', line 22

def fitness
  return 1.0 if annotations.empty?

  @fitness ||= fitness_scores.inject(:+).to_f / fitness_scores.length
end

#fitness_scores ⇒ Object (private) 



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# File 'lib/head_music/style/analysis.rb', line 34

def fitness_scores
  @fitness_scores ||= annotations.map(&:fitness)
end

#messages ⇒ Object Also known as: annotation_messages 



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# File 'lib/head_music/style/analysis.rb', line 13

def messages
  annotations.reject(&:adherent?).map(&:message)
end