Contents

require "#{File.dirname(__FILE__)}/base.rb"

module Processing  
  
  # A sketch loader, observer, and reloader, to tighten 
  # the feedback between code and effect.
  class Watcher
    
    # Sic a new Processing::Watcher on a given sketch.
    def initialize(sketch)
      @file = sketch
      @time = Time.now
      load @file
      start_watching
    end
    
    # Kicks off a thread to watch the sketch, reloading Ruby-Processing
    # and restarting the sketch whenever it changes.
    def start_watching
      thread = Thread.start do
        loop do
          file_mtime = File.stat(@file).mtime
          if file_mtime > @time
            @time = file_mtime
            Processing::App.wipe_out_current_app!
            GC.start
            begin
              load @file
            rescue SyntaxError
              print "Syntax Error in your sketch: ", $!, "\n"
            end
          end
          sleep 0.1
        end
      end
      thread.join
    end
    
  end
end

Processing::Watcher.new(Processing::SKETCH_PATH)

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
ruby-processing-1.0.1	lib/ruby-processing/runners/watch.rb
ruby-processing-1.0.2	lib/ruby-processing/runners/watch.rb