Difference between revisions of "Render Part A Assignment"
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[[File:Diagram_part_a.png|600px]] | [[File:Diagram_part_a.png|600px]] | ||
− | = | + | =Code to Use= |
− | [https://www.cse.wustl.edu/~dennis.cosgrove/courses/cse425s/current/doc/Graphics.html Graphics] | + | ==[https://www.cse.wustl.edu/~dennis.cosgrove/courses/cse425s/current/doc/Graphics.html Graphics]== |
: [https://www.cse.wustl.edu/~dennis.cosgrove/courses/cse425s/current/doc/Graphics.html#draw_convex_polygon-instance_method draw_convex_polygon] | : [https://www.cse.wustl.edu/~dennis.cosgrove/courses/cse425s/current/doc/Graphics.html#draw_convex_polygon-instance_method draw_convex_polygon] | ||
: [https://www.cse.wustl.edu/~dennis.cosgrove/courses/cse425s/current/doc/Graphics.html#draw_curve-instance_method draw_curve] | : [https://www.cse.wustl.edu/~dennis.cosgrove/courses/cse425s/current/doc/Graphics.html#draw_curve-instance_method draw_curve] | ||
: [https://www.cse.wustl.edu/~dennis.cosgrove/courses/cse425s/current/doc/Graphics.html#draw_image-instance_method draw_image] | : [https://www.cse.wustl.edu/~dennis.cosgrove/courses/cse425s/current/doc/Graphics.html#draw_image-instance_method draw_image] | ||
: [https://www.cse.wustl.edu/~dennis.cosgrove/courses/cse425s/current/doc/Graphics.html#draw_string-instance_method draw_string] | : [https://www.cse.wustl.edu/~dennis.cosgrove/courses/cse425s/current/doc/Graphics.html#draw_string-instance_method draw_string] | ||
+ | |||
+ | ==Point2== | ||
+ | |||
+ | ==[https://ruby-doc.org/core-2.6/Math.html Math]== | ||
+ | : [https://ruby-doc.org/core-2.6/Math.html#method-c-cos Math.cos(radians)] | ||
+ | : [https://ruby-doc.org/core-2.6/Math.html#method-c-sin Math.sin(radians)] | ||
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Latest revision as of 11:24, 9 August 2023
Contents
Diagram
Code to Use
Graphics
Point2
Math
Code to Implement
Each of the renderable components has its own file in the src/main/ruby/drawings/core
directory.
Be sure to add accessors for all constructor parameters.
Equilateral Triangle
file: | src/main/ruby/drawings/core/equilateral_triangle.rb | ![]() |
class: | EquilateralTriangle | |
superclass: | Object | |
methods: | initialize(half_side_length) half_side_length() half_side_length=() render(g) |
WARNING: Ruby division of two integers results in an integer. For example: 1/3 == 0
The triangle should be equilateral, rendered with its the origin at the center of mass.
Your constructor should accept a half_side_length
parameter.
Add an accessor for half_side_length.
The height of the triangle should be side_length * sqrt(3)/2
The center of mass is one third from the bottom.
So, the bottom left point A's x coordinate should be -half_side_length
and its y coordinate should be -1/3 height
.
file to run: | src/main/ruby/drawings/core/equilateral_triangle.rb | ![]() |
Rectangle
file: | src/main/ruby/drawings/core/rectangle.rb | ![]() |
class: | Rectangle | |
superclass: | Object | |
methods: | initialize(half_width, half_height) half_width() half_width=() half_height() half_height=() render(g) |
Add an accessors for half_width and half_height.
file to run: | src/main/ruby/drawings/core/rectangle.rb | ![]() |
Ellipse
file: | src/main/ruby/drawings/core/ellipse.rb | ![]() |
class: | Ellipse | |
superclass: | Object | |
methods: | initialize(x_radius, y_radius) x_radius() x_radius=() y_radius() y_radius=() render(g) |
Add an accessors for x_radius and y_radius.
Note: to produce the reference image the code below was used:
slice_count = 32 delta_theta = (2*Math::PI) /slice_count
file to run: | src/main/ruby/drawings/core/ellipse.rb | ![]() |
CircularSegment
file: | src/main/ruby/drawings/core/circular_segment.rb | ![]() |
class: | CircularSegment | |
superclass: | Object | |
methods: | initialize(x_radius, y_radius, theta_a, theta_z) render(g) |
In geometry a chord is a line segment which joins two points on a curve. We will define a class CircularSegment
which renders a filled shape of an ellipse cut at the chord between theta_a and theta_z.
Note: to produce the reference image the code below was used:
slice_count = 32 delta_theta = (@theta_z-@theta_a) / slice_count
Note: a Chord with 32 slices will have 33 points.
file to run: | src/main/ruby/drawings/core/circular_segment.rb | ![]() |
Image
file: | src/main/ruby/drawings/core/image.rb | ![]() |
class: | Image | |
superclass: | Object | |
methods: | initialize(path) render(g) |
should draw the pixels from (0,0)
file to run: | src/main/ruby/drawings/core/image.rb | ![]() |
Text
file: | src/main/ruby/drawings/core/text.rb | ![]() |
class: | Text | |
superclass: | Object | |
methods: | initialize(text, font) render(g) |
file to run: | src/main/ruby/drawings/core/text.rb | ![]() |
Bézier Curve
file: | src/main/ruby/drawings/core/bezier_curve.rb | ![]() |
class: | BezierCurve | |
superclass: | Object | |
methods: | initialize(control_points) render(g) |
NOTE: you need not implement the interpolation yourself. Use the draw_curve method on Graphics.
Quadratic (Second Order) Curve: | ![]() |
![]() |
Quadratic (Third Order) Curve: | ![]() |
![]() |
Fourth Order Curve: | ![]() |
![]() |
file to run: | src/main/ruby/drawings/core/bezier_curve.rb | ![]() |
Testing Your Solution
Unit Test
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_slow/part_a/*.rb | ![]() |
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_a_snapshots_web_page_generator.rb | ![]() |
Somewhat Outdated Testing Demo