Difference between revisions of "Render Part D Assignment"
Line 92: | Line 92: | ||
=Testing Your Solution= | =Testing Your Solution= | ||
==Unit Test== | ==Unit Test== | ||
− | + | {{RubyUnitTest|*|drawings/core/relatively_fast/part_d}} | |
− | {{RubyUnitTest|*|drawings/ | + | |
===Backwards Compatibility=== | ===Backwards Compatibility=== | ||
− | {{RubyUnitTest|*|drawings/ | + | {{RubyUnitTest|*|drawings/core/relatively_fast/part_a}} |
− | {{RubyUnitTest|*|drawings/ | + | {{RubyUnitTest|*|drawings/core/relatively_fast/part_b}} |
− | {{RubyUnitTest|*|drawings/ | + | {{RubyUnitTest|*|drawings/core/relatively_fast/part_c}} |
− | == | + | ==Visual Comparison== |
− | + | {{RubyToRun|part_d_snapshots_web_page_generator|drawings/core/snapshots|test}} |
Revision as of 20:30, 8 March 2023
In this studio we will evolve our code from Render_Part_C_Assignment to leverage mixins.
Continue editing files in the render/assignment directory.
Background
Mixins are achieved in Ruby by including with modules.
module Nameable def introduce "Hello. My name is #{@name}." end end class Person include Nameable def initialize(name) @name = name end end class Car include Nameable def initialize(name) @name = name end end prof_grossman = Person.new("Dan") love_bug = Car.new("Herbie") puts prof_grossman.introduce puts love_bug.introduce
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 or module definition.
If you include
at the top-level, it will mixin to Object
!
This may or may not rip a hole in the universe.
Code to Implement
Composite
file: | src/main/ruby/drawings/composite.rb | |
module: | Composite | |
methods: | initialize_components() push_component(component) each_component() untransformed_bounds() |
module Composite should define methods initialize_components
, push_component
, each_component
, and untransformed_bounds
as well as mixin the Enumerable module.
initialize_components
add an instance variable with a suitable name to store an array of components
NOTE: initialize_components() must be private.
push_component
push a component onto your array instance variable.
each_component
if a block is given, yield for each component in your array instance variable.
otherwise use to_enum to return a new Enumerator of the components.
Note: be sure to invoke to_enum
with the symbol of the method :each_component
and not invoke the method by mistake.
untransformed_bounds
Similar to the untransformed bounds calculations on CompositeTransform and Scene from Part C.
Mixin Enumerable
to add a number of useful methods, include the Enumerable module and
Alias each
use alias_method to alias an :each
method to the :each_component
method.
CompositeTransform
Be sure to add:
require_relative 'composite' |
Mixin your Composite module to the CompositeTransform class.
include Composite
Be sure to invoke initialize_components
from the constructor and clean up existing code. For example bounds calculation can now use map.
Scene
Be sure to add:
require_relative 'composite' |
Mixin your Composite module to the Scene class.
include Composite
Be sure to invoke initialize_components
from the constructor and clean up existing code. For example bounds calculation can now use map.
Testing Your Solution
Unit Test
file: | src/test/ruby/drawings/core/relatively_fast/part_d/*.rb | UnitTest |
note: ensure that you have removed all printing to receive credit for any assignment.
Backwards Compatibility
file: | src/test/ruby/drawings/core/relatively_fast/part_a/*.rb | UnitTest |
note: ensure that you have removed all printing to receive credit for any assignment.
file: | src/test/ruby/drawings/core/relatively_fast/part_b/*.rb | UnitTest |
note: ensure that you have removed all printing to receive credit for any assignment.
file: | src/test/ruby/drawings/core/relatively_fast/part_c/*.rb | UnitTest |
note: ensure that you have removed all printing to receive credit for any assignment.
Visual Comparison
file to run: | src/test/ruby/drawings/core/snapshots/part_d_snapshots_web_page_generator.rb |