From: "matt.smillie@..." <matt.smillie@...>
Date: 2006-02-19T00:18:29+09:00
Subject: Re: How to translate a C tree structure to ruby tree objects

The children of a node go in @children.  They're probably other nodes.

The transformation matrix and function would likely be data members
holding, respectively, a matrix and a proc object.  An alternate
approach for the drawing function would be to make an instance method
that receives a block (where the block would contain the drawing
function).

So, potentially something like this:

class Node
  attr_accessor :children, :parent, :transform
  def initialize(parent = nil, transform = some_sort_of _matrix_object)
    @children = []
    @transform = transform
    if parent then parent.add_child(self) end
  end

  def add_child(node)
    @children.push(node)
    node.parent = self
  end

  def draw(&block)
    yield
  end
end