Class: RfBeam::KLD7::Streamer

Inherits:
Object
  • Object
show all
Defined in:
lib/rfbeam/kld7/streamer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(radar) ⇒ Streamer

Returns a new instance of Streamer.



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# File 'lib/rfbeam/kld7/streamer.rb', line 13

def initialize(radar)
  @radar = radar
end

Instance Attribute Details

#radar ⇒ Object

Returns the value of attribute radar.



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# File 'lib/rfbeam/kld7/streamer.rb', line 11

def radar
  @radar
end

Instance Method Details

#monitor_keypress ⇒ Object 



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# File 'lib/rfbeam/kld7/streamer.rb', line 17

def monitor_keypress
  loop do
    key = $stdin.getch
    if key.casecmp('q').zero?
      @stop_streaming = true
      break
    end
  end
end

#rfft ⇒ Object 



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# File 'lib/rfbeam/kld7/streamer.rb', line 27

def rfft
  out = StringIO.new
  def out.tty?
    true
  end

  Thread.new { monitor_keypress }

  loop do
    out.truncate(0)

    plot = rfft_plot(@radar)
    plot.render(out)

    lines = out.string.lines
    lines.each { |line| $stdout.print "\r#{line}" }
    $stdout.print "\e[0J"
    $stdout.flush
    break if @stop_streaming

    n = lines.count
    $stdout.print "\e[#{n}F"
  end
end