LibraryProxy
The purpose of the LibraryProxy class is to provide access to processing reflection methods:-
In the sketch we must load_library :library_proxy then our ruby library class can inherit from LibraryProxy as below, but it must implement all the abstract methods, even if method is empty
class MyClass < LibraryProxy
# access to pre, draw, etc
end
Example sketch:-
#!/usr/bin/env jruby
require 'picrate'
require_relative 'register_send'
class LibraryProxySketch < Processing::App
# A simple demonstration of vanilla processing 'reflection' methods using
# propane :library_proxy. See my_library.rb code for the guts.
load_library :library_proxy
require_relative 'my_library'
def settings
size 300, 200
end
def setup
sketch_title 'Reflection Voodoo Proxy'
MyLibrary.new self
no_loop
end
def draw
fill(0, 0, 200)
ellipse(170, 115, 70, 100)
end
end
LibraryProxySketch.new
my_library.rb
# This class demonstrates how by inheriting from the abstract class LibraryProxy
# we can access 'pre', 'draw' and 'post' (Note we need a post method even
# though it is empty)
class MyLibrary < LibraryProxy
attr_reader :app
def initialize(parent)
@app = parent
end
def pre
background(100)
end
def draw
app.fill(200, 100)
app.ellipse(150, 100, 200, 60)
end
def post # required but empty method is fine
end
end
