Difference between revisions of "Render Part D Assignment"
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In this studio we will evolve our code from [[Render_Part_C_Assignment]] to leverage mixins. | In this studio we will evolve our code from [[Render_Part_C_Assignment]] to leverage mixins. | ||
− | [[File: | + | [[File:Diagram_part_d.png|600px]] |
Continue editing files in the render/assignment directory. | Continue editing files in the render/assignment directory. | ||
=Background= | =Background= | ||
− | + | Mixins are achieved in Ruby by including with [https://ruby-doc.org/core-2.5.0/Module.html modules]. | |
+ | |||
+ | <nowiki>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</nowiki> | ||
=Warning= | =Warning= | ||
Line 13: | Line 40: | ||
=Code to Implement= | =Code to Implement= | ||
==Composite== | ==Composite== | ||
− | {{RubyModuleToImplement|composite| | + | {{RubyModuleToImplement|composite|drawings|Composite|initialize_components()<br/>push_component(component)<br/>untransformed_render()<br/>untransformed_bounds()}} |
− | module Composite should define methods <code>initialize_components</code>, <code>push_component</code>, and <code> | + | module Composite should define methods <code>initialize_components</code>, <code>push_component</code>, <code>untransformed_render</code>, and <code>untransformed_bounds</code>. |
===initialize_components=== | ===initialize_components=== | ||
Line 25: | Line 52: | ||
push a component onto your array instance variable. | push a component onto your array instance variable. | ||
− | === | + | ===untransformed_render=== |
− | + | Similar to the untransformed render on CompositeTransform and Scene from Part B. | |
− | |||
− | |||
− | |||
− | |||
===untransformed_bounds=== | ===untransformed_bounds=== | ||
− | Similar to the untransformed bounds calculations on CompositeTransform | + | Similar to the untransformed bounds calculations on CompositeTransform from Part C. |
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
==CompositeTransform== | ==CompositeTransform== | ||
Line 50: | Line 67: | ||
<code>include Composite</code> | <code>include Composite</code> | ||
− | Be sure to invoke <code>initialize_components</code> from the constructor and clean up existing code | + | Be sure to invoke <code>initialize_components</code> from the constructor and clean up existing code. |
==Scene== | ==Scene== | ||
Line 61: | Line 78: | ||
<code>include Composite</code> | <code>include Composite</code> | ||
− | Be sure to invoke <code>initialize_components</code> from the constructor and clean up existing code | + | Be sure to invoke <code>initialize_components</code> from the constructor and clean up existing code. |
=Testing Your Solution= | =Testing Your Solution= | ||
==Unit Test== | ==Unit Test== | ||
− | === | + | {{RubyUnitTest|*|drawings/core/relatively_fast/part_d}} |
− | {{RubyUnitTest|*|drawings/ | + | |
+ | ===Backwards Compatibility=== | ||
+ | {{RubyUnitTest|*|drawings/core/relatively_fast/part_a}} | ||
+ | |||
+ | {{RubyUnitTest|*|drawings/core/relatively_fast/part_b}} | ||
− | + | {{RubyUnitTest|*|drawings/core/relatively_fast/part_c}} | |
− |
Latest revision as of 03:50, 4 May 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.
Contents
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) untransformed_render() untransformed_bounds() |
module Composite should define methods initialize_components
, push_component
, untransformed_render
, and untransformed_bounds
.
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.
untransformed_render
Similar to the untransformed render on CompositeTransform and Scene from Part B.
untransformed_bounds
Similar to the untransformed bounds calculations on CompositeTransform from Part C.
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.
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.
Testing Your Solution
Unit Test
file: | src/test/ruby/drawings/core/relatively_fast/part_d/*.rb | ![]() |
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 | ![]() |
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 | ![]() |
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 | ![]() |
note: ensure that you have removed all printing to receive credit for any assignment.