Class: Processing::Watcher
- Inherits:
-
Object
- Object
- Processing::Watcher
- Defined in:
- lib/ruby-processing/runners/watch.rb
Overview
A sketch loader, observer, and reloader, to tighten the feedback between code and effect.
Instance Method Summary collapse
-
#initialize ⇒ Watcher
constructor
Sic a new Processing::Watcher on the sketch.
- #reload_files_to_watch ⇒ Object
-
#report_errors ⇒ Object
Convenience function to report errors when loading and running a sketch, instead of having them eaten by the thread they are loaded in.
- #start_runner ⇒ Object
-
#start_watching ⇒ Object
Kicks off a thread to watch the sketch, reloading Ruby-Processing and restarting the sketch whenever it changes.
Constructor Details
#initialize ⇒ Watcher
Sic a new Processing::Watcher on the sketch
8 9 10 11 12 |
# File 'lib/ruby-processing/runners/watch.rb', line 8 def initialize reload_files_to_watch @time = Time.now start_watching end |
Instance Method Details
#reload_files_to_watch ⇒ Object
49 50 51 |
# File 'lib/ruby-processing/runners/watch.rb', line 49 def reload_files_to_watch @files = ([SKETCH_PATH] + Dir.glob(File.dirname(SKETCH_PATH) + '/*.rb')).uniq end |
#report_errors ⇒ Object
Convenience function to report errors when loading and running a sketch, instead of having them eaten by the thread they are loaded in.
33 34 35 36 37 38 |
# File 'lib/ruby-processing/runners/watch.rb', line 33 def report_errors yield rescue Exception => e warn "Exception occured while running sketch #{File.basename SKETCH_PATH}..." puts "Backtrace:\n\t#{e.backtrace.join("\n\t")}" end |
#start_runner ⇒ Object
40 41 42 43 44 45 46 47 |
# File 'lib/ruby-processing/runners/watch.rb', line 40 def start_runner @runner.kill if @runner && @runner.alive? @runner = Thread.start do report_errors do Processing.load_and_run_sketch end end end |
#start_watching ⇒ Object
Kicks off a thread to watch the sketch, reloading Ruby-Processing and restarting the sketch whenever it changes.
16 17 18 19 20 21 22 23 24 25 26 27 28 29 |
# File 'lib/ruby-processing/runners/watch.rb', line 16 def start_watching start_runner Kernel.loop do if @files.find { |file| File.exist?(file) && File.stat(file).mtime > @time } puts 'reloading sketch...' $app && $app.close @time = Time.now java.lang.System.gc start_runner reload_files_to_watch end sleep 0.33 end end |