Top Level Namespace

Defined Under Namespace

Classes: Api, App, Array, AudioOutput, Composer, Dist, Fader, FileList, Float, HitSq, Integer, Logger, Mapper, MathUtils, Mixer, Note, Object, Snd, SndDist, TestDists, TestHitSq, TestNotes, TestTones, Tone, TonePart, ToneSeq, Wave, WaveData

Instance Method Summary collapse

Instance Method Details

#bar(i = 1) ⇒ Object

return the frames in i bars. used for setting lengths when they are needed in frames.



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# File 'lib/api/api.rb', line 89

def bar i=1
  z=Composer.beat i*4
  z.to_i
end

#beat(i = 1) ⇒ Object

return the frames in i beats. used for setting lengths when they are needed in frames.



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# File 'lib/api/api.rb', line 84

def beat i=1
  z=Composer.beat i
  z.to_i
end

#bpm ⇒ Object

return the current beats per minute.



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# File 'lib/api/api.rb', line 111

def bpm
  Composer.bpm
end

#chord_notes(note, name = "dim7") ⇒ Object

outputs the midi notes of the chord in an array

note

midi value of root note in chord. range: 0 to 11

name

anything from Composer.chords



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# File 'lib/api/api.rb', line 134

def chord_notes(note, name = "dim7")
  set=[]
  out=[]
  all=Composer.chords
  # handle all selected
  if name=="all"
    all.keys.each { |val| out.push chord_notes(note, val) }
  else #normal
    set = all[name]
    raise "Unknown scale name" if set.nil?
    out = [note] # always root
    set.each do |val|
      out.push note+val
    end
  end

  out
end

#clear ⇒ Object

clear already rendered files. usually you will want to do this at the start of the program or temp files created from the last use will overlap the current ones when you run #make.



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# File 'lib/api/api.rb', line 102

def clear
  App.clear_ready
end

#compute ⇒ Object

shortcut for #render #save_state #make



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# File 'lib/api/api.rb', line 115

def compute
  render
  save_state
  make
end

#get_chords ⇒ Object

return an Array of chords (each chord is an Array of Integer notes) that fit each note consecutively in Composer#scale. The chord is randomly sampled from those availiable.



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# File 'lib/api/api.rb', line 191

def get_chords
  out = []
  notes = scale_notes
  notes.count.times do |i|
    begin
        chord = scale_chord(i).sample #rand
      if chord == []
        out << [notes[i]]
      else
        out << chord_notes(notes[i], chord)
      end

    rescue Exception
      out << [notes[i]]
    end
  end
  out
end

#load_state(file = nil) ⇒ Object

load program state from a saved file.



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# File 'lib/api/api.rb', line 59

def load_state file=nil
  file=App.outpath + "save.rb" if file.nil?
  f=File.open(file,'r')
  content=f.read
  # puts content
  App.out= YAML.load(content)
  f.close
end

#log(str, level = 3) ⇒ Object

level

it won’t be logged unless Logger.level is at or above this level.



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# File 'lib/api/api.rb', line 122

def log str, level=3
  App.logger.log str, level
end

#log_level(set) ⇒ Object

set Logger.level. Higher means more logging. 0 is silent.



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# File 'lib/api/api.rb', line 126

def log_level set
  App.logger.level = set
end

#make ⇒ Object

make an audio file based off generated data.



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# File 'lib/api/api.rb', line 79

def make
  App.out.make_audio_file
end

#music(times = 1) ⇒ Object

the main function. output the code block to numbered files.

times

number of times to run the block into a new file



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# File 'lib/api/api.rb', line 239

def music times=1
  times.times do |i|
    clear
    yield 
    render
    App.out.outfile= "#{App.outpath}#{App::OUT_SND_DIR}#{i+1}#{App::EXT}"
    make
  end
end

#note_index(note) ⇒ Object

returns how far the given note (Integer) is into the scale.



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# File 'lib/api/api.rb', line 211

def note_index(note)
   scale_notes.index(note)
end

#queue(dist) ⇒ Object

add a Dist to the queue of things to be rendered when you call render. see #render.



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# File 'lib/api/api.rb', line 95

def queue dist
  App.out.snddists<<dist.instance_variable_get(:@dist)
end

#rand_range(max, min = 0, weight = 1) ⇒ Object

return random Integer in range with min and max



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# File 'lib/api/api.rb', line 230

def rand_range max, min=0, weight =1
  rand_p = max - min
  weight.times {rand_p *= rand}
  min + rand_p
end

#rand_scale ⇒ Object

random scale



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# File 'lib/api/api.rb', line 184

def rand_scale
  Composer.scales.keys.sample # allow for random.
end

#render ⇒ Object

generate the audio data for everything in the queue. see #queue method.



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# File 'lib/api/api.rb', line 74

def render
  App.out.render
end

#save_state(file = nil) ⇒ Object

save program state to a file.



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# File 'lib/api/api.rb', line 69

def save_state file=nil
  App.out.write_text_files file
end

#scale_chord(i = 0) ⇒ Object

return an Array of String of chords that could be the i number chord for notes in the Composer#scale.

scale

anything from Composer.scales.



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# File 'lib/api/api.rb', line 177

def scale_chord(i=0)
  notes = scale_notes
  raise "#{i} is out of range for that scale, it only has #{notes.count} notes." if notes[i].nil?
  Composer.matching_chords(notes[i])
end

#scale_notes(note = 0, is_all = false) ⇒ Object

return array of notes in the Composer#scale

note

midi value of root note. range: 0 to 11

name

anything from Composer.scales.



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# File 'lib/api/api.rb', line 156

def scale_notes(note=0,is_all=false)
  set=[]
  out=[]
  all=Composer.scales
  # handle all selected
  if is_all
    all.keys.each { |val| out.push scale_notes(val,note) }
  else #normal
    set = all[Composer.scale]
    raise "Unknown scale name" if set.nil?
    out = [note] # always root
    # add set to out
    set.each do |val|
      out.push note+ val
    end
  end
  out
end

#set_bpm(val) ⇒ Object

set the beats per minute of all following commands. now helper methods like #beat will be usefull.



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# File 'lib/api/api.rb', line 107

def set_bpm val
  Composer.bpm = val
end

#set_scale(sc) ⇒ Object

sets Composer#scale



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# File 'lib/api/api.rb', line 215

def set_scale sc
   Composer.scale = sc
end

#start ⇒ Object

the typical series of commands at the start of a simple new music coder file.



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# File 'lib/api/api.rb', line 219

def start
  log_level 1
  clear
  set_bpm 128
end