Render Part D Assignment

In this studio we will evolve our code from Render_Part_C_Assignment to leverage mixins.

Continue editing files in the render/assignment directory.

Code to Implement

Composite

file:	src/main/ruby/render/assignment/composite.rb
module:	Composite
methods:	initialize_components push_component(component) each_component

module Composite should define methods push_component and each_component as well as include the Enumerable module.

push_component

push a component onto an array.

each_component

if a block is given, yield for each component. otherwise return a new Enumerator of the components.

Enumerable

to add a number of useful methods, include the Enumerable module and use alias_method to alias an :each method to the :each_component method.

CompositeTransform

Mixin your Composite module to the CompositeTransform class and clean up existing code.

include Composite

Warning: Do NOT use the include keyword in Ruby as you would typically in C or C++. Be sure to include within the intended class definition. If you include outside of the class at the top-level, it will mixin Composite into Object. This may or may not rip a hole in the universe.

Scene

include Composite and clean up existing code.

Testing Your Solution

Unit Test

file:

src/test/ruby/render/part_d/part_d_unit_test.rb

UnitTest

note: ensure that you have removed all printing to receive credit for any assignment.