setup

Apart from nude sketches, all sketches will probably have a user defined [setup][setup] method. This is where you define the sketch title and where static code belongs.

def setup
  sketch_title 'My sketch'
  # ... static code
end

Note to make variables declared in setup in the rest of sketch, you should make use of ruby attr_reader as for the pts array below.

attr_reader :pts

 def setup
   sketch_title 'My sketch'
   @pts = []
   # ... static code
 end

When the you can access pts in say the draw loop

 def draw
   p pts.length
   # ... static code
 end