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:Render_part_d_class_hierarchy.svg]]
+
[[File:Diagram_part_d.png|600px]]
  
 
Continue editing files in the render/assignment directory.
 
Continue editing files in the render/assignment directory.
 +
 +
=Background=
 +
Mixins are achieved in Ruby by including with [https://ruby-doc.org/core-2.5.0/Module.html modules].
 +
 +
<nowiki>module Nameable
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  def introduce
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    "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=
 +
[[File:Warning_icon.svg|left|100px|caption]] Do '''NOT''' use the <code>include</code> keyword in Ruby as you would typically in C or C++.<br/>Be sure to include within the intended class or module definition.<br/>If you <code>include</code> at the top-level, it will mixin to <code>Object</code>!<br/>This may or may not rip a hole in the universe.
 +
 +
=Code to Implement=
 +
==Composite==
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{{RubyModuleToImplement|composite|drawings|Composite|initialize_components()<br/>push_component(component)<br/>untransformed_render()<br/>untransformed_bounds()}}
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 +
module Composite should define methods <code>initialize_components</code>, <code>push_component</code>, <code>untransformed_render</code>, and <code>untransformed_bounds</code>.
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 +
===initialize_components===
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add an instance variable with a suitable name to store an array of components
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 +
NOTE: initialize_components() must be private.
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 +
===push_component===
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push a component onto your array instance variable.
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 +
===untransformed_render===
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Similar to the untransformed render on CompositeTransform and Scene from Part B.
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 +
===untransformed_bounds===
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Similar to the untransformed bounds calculations on CompositeTransform from Part C.
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 +
==CompositeTransform==
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Be sure to add:
 +
 +
{{RubyRequireRelative|composite}}
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Mixin your Composite module to the CompositeTransform class.
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 +
<code>include Composite</code>
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 +
Be sure to invoke <code>initialize_components</code> from the constructor and clean up existing code.
 +
 +
==Scene==
 +
Be sure to add:
 +
 +
{{RubyRequireRelative|composite}}
 +
 +
Mixin your Composite module to the Scene class.
 +
 +
<code>include Composite</code>
 +
 +
Be sure to invoke <code>initialize_components</code> from the constructor and clean up existing code.
 +
 +
=Testing Your Solution=
 +
==Unit Test==
 +
{{RubyUnitTest|*|drawings/core/relatively_fast/part_d}}
 +
 +
===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.

Diagram part d.png

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

caption

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 Ruby logo.svg
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' Ruby logo.svg

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' Ruby logo.svg

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 Ruby logo.svg 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 Ruby logo.svg 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 Ruby logo.svg 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 Ruby logo.svg UnitTest

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