Class: Deftones::Component::LFO

Inherits:
Source::Oscillator show all
Defined in:
lib/deftones/component/lfo.rb

Constant Summary

Constants inherited from Source::Oscillator

Source::Oscillator::GENERATORS, Source::Oscillator::TYPES

Instance Attribute Summary collapse

Attributes inherited from Source::Oscillator

#detune, #frequency, #type

Attributes inherited from Deftones::Core::Source

#mute, #onstop, #volume

Instance Method Summary collapse

Methods inherited from Source::Oscillator

bandlimited_sawtooth, bandlimited_square, bandlimited_triangle, #detune_ratio, naive_triangle, #normalize_type, #phase, #phase=, poly_blep, poly_blep_end, poly_blep_start, sample, #sample_for

Methods inherited from Deftones::Core::Source

#active_at?, #apply_volume!, #cancel_stop, #clear_transport_event, #dispose, #mute?, #notify_stop_in_window, #number_of_inputs, #render, #render_block, #resolve_time, #resolve_transport_time, #restart, #schedule_transport_event, #source_type, #start, #state, #stop, #sync, #synced?, #unsync, #uses_legacy_render_for_block?

Constructor Details

#initialize(frequency: 1.0, min: 0.0, max: 1.0, amplitude: 1.0, units: :number, convert: true, type: :sine, context: Deftones.context) ⇒ LFO

Returns a new instance of LFO.



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# File 'lib/deftones/component/lfo.rb', line 9

def initialize(
  frequency: 1.0,
  min: 0.0,
  max: 1.0,
  amplitude: 1.0,
  units: :number,
  convert: true,
  type: :sine,
  context: Deftones.context
)
  super(type: type, frequency: frequency, context: context)
  @units = units.to_sym
  @convert = !!convert
  @amplitude = Core::Param.new(value: amplitude, units: :number, context: context)
  self.min = min
  self.max = max
end

Instance Attribute Details

#amplitude ⇒ Object (readonly)

Returns the value of attribute amplitude.



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# File 'lib/deftones/component/lfo.rb', line 6

def amplitude
  @amplitude
end

#convert ⇒ Object

Returns the value of attribute convert.



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# File 'lib/deftones/component/lfo.rb', line 7

def convert
  @convert
end

#units ⇒ Object

Returns the value of attribute units.



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# File 'lib/deftones/component/lfo.rb', line 6

def units
  @units
end

Instance Method Details

#coerce_range_value(value) ⇒ Object (private) 



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# File 'lib/deftones/component/lfo.rb', line 79

def coerce_range_value(value)
  return value.value_of if value.respond_to?(:value_of) && !convert

  signal = Core::Signal.new(value: 0.0, units: units, context: context)
  signal.convert = convert
  signal.send(:coerce_value, value)
end

#get_defaults ⇒ Object Also known as: getDefaults 



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# File 'lib/deftones/component/lfo.rb', line 47

def get_defaults
  {
    frequency: 1.0,
    min: 0.0,
    max: 1.0,
    amplitude: 1.0,
    units: :number,
    convert: true,
    type: :sine
  }
end

#max ⇒ Object 



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# File 'lib/deftones/component/lfo.rb', line 35

def max
  @max
end

#max=(value) ⇒ Object 



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# File 'lib/deftones/component/lfo.rb', line 39

def max=(value)
  @max = coerce_range_value(value)
end

#min ⇒ Object 



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# File 'lib/deftones/component/lfo.rb', line 27

def min
  @min
end

#min=(value) ⇒ Object 



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# File 'lib/deftones/component/lfo.rb', line 31

def min=(value)
  @min = coerce_range_value(value)
end

#process(_input_buffer, num_frames, start_frame, cache) ⇒ Object 



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# File 'lib/deftones/component/lfo.rb', line 59

def process(_input_buffer, num_frames, start_frame, cache)
  waveform = super
  amplitudes = @amplitude.process(num_frames, start_frame)
  midpoint = (@min + @max) * 0.5
  half_range = (@max - @min) * 0.5

  Array.new(num_frames) do |index|
    depth = amplitudes[index].clamp(0.0, 1.0)
    midpoint + (waveform[index] * half_range * depth)
  end
end

#values(num_frames, start_frame = 0, cache = {}) ⇒ Object 



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# File 'lib/deftones/component/lfo.rb', line 71

def values(num_frames, start_frame = 0, cache = {})
  render(num_frames, start_frame, cache)
end