CSCI 200 - Fall 2024
Foundational Programming Concepts & Design

A5 - SFML: Polygon Land

→This assignment is due by Tuesday, November 19, 2024 11:59 PM.←
→ As with all assignments, this must be an individual effort and cannot be pair programmed. Any debugging assistance must follow the course collaboration policy and be cited in the comment header block for the assignment.←

Jump To: Rubric Submission

For this assignment, we will write a program to read in a list of polygon data and draw an image comprised of those simple polygons. The full UML diagram is shown below (click to enlarge).

Polygon UML Hierarchy

The Abstract Polygon


Begin by creating an abstract Polygon class. The class will have the following members and corresponding implementations:


The Abstract Triangle


Next create the abstract Triangle class that extends Polygon. The class will have the following members and corresponding implementations:


The Concrete ScaleneTriangle


Now we'll begin creating concrete instances of a triangle. Create a class called ScaleneTriangle that implements Triangle. It will need to override the validate() method. Given the three vertex coordinates, compute the length of each side. If the three sides form a triangle (that is - all three sides are non-zero and the sum of any two is greater than the third) AND all three side lengths are different, then return true. If the sides do not form a triangle or have equivalent lengths, return false.


The Concrete IsoscelesTriangle


Create a class called IsoscelesTriangle that implements Triangle. It will need to override the validate() method. Given the three vertex coordinates, compute the length of each side. If the three sides form a triangle (that is - all three sides are non-zero and the sum of any two is greater than the third) AND at least two of the three sides are equal in length, then return true. If the sides do not form an isosceles triangle, return false.


The Concrete EquilateralTriangle


Create a class called EquilateralTriangle that implements Triangle. It will need to override the validate() method. Given the three vertex coordinates, compute the length of each side. If the three sides form a triangle (that is - all three sides are non-zero and the sum of any two is greater than the third) AND all three of the three sides are equal in length, then return true. If the sides do not form an equilateral triangle, return false.


The Abstract Quadrilateral


Next create the abstract Quadrilateral class that extends Polygon. The class will have the following members and corresponding implementations:


The Concrete Rhombus


Create a class called Rhombus that implements Quadrilateral. It will need to override the validate() method. Given the four vertex coordinates, compute the length of each side. If the four sides form two isosceles triangles (comprised of vertices 0, 1, 2 & 0, 2, 3) AND all four of the four sides are equal in length, then return true. If the sides do not form a rhombus, return false. (Note: for this assignment, we can assume the points will form a simple polygon and the edges will not cross themselves.)


Read the File


A sample polygon data file is provided. The file contains some number of lines in the following format:

T x1 y1 x2 y2 x3 y3 x4 y4 r g b

Where each value is:

We want to be sure to leverage runtime polymorphism as we read in the file. Therefore, create a list of Polygon pointers. As you read each line, create a Polygon pointer of the corresponding type. Call the setCoordinate() method with the corresponding coordinate. If the vertices form a polygon of the appropriate type, then set the color and add the pointer to the list. If the vertices do not form the corresponding polygon, then print out "polygon is invalid" and the line that corresponds to the polygon.

The sample file results in the following output denoting which polygons are invalid:

polygon is invalid - "E 0 0 5 5 10 10 255 255 255"
polygon is invalid - "I 0 0 5 5 10 10 255 255 255"
polygon is invalid - "E 0 0 5 5 11 11 255 255 255"
polygon is invalid - "I 0 0 5 5 11 11 255 255 255"
polygon is invalid - "S 0 0 0 0 0 0 255 255 255"
polygon is invalid - "I 0 0 0 0 0 0 255 255 255"
polygon is invalid - "E 0 0 0 0 0 0 255 255 255"
polygon is invalid - "S 10 0 10 0 0 0 255 255 255"
polygon is invalid - "I 10 0 10 0 0 0 255 255 255"
polygon is invalid - "E 10 0 10 0 0 0 255 255 255"
polygon is invalid - "S 0 0 10 0 10 0 255 255 255"
polygon is invalid - "I 0 0 10 0 10 0 255 255 255"
polygon is invalid - "E 0 0 10 0 10 0 255 255 255"
polygon is invalid - "S 10 0 0 0 10 0 255 255 255"
polygon is invalid - "I 10 0 0 0 10 0 255 255 255"
polygon is invalid - "E 10 0 0 0 10 0 255 255 255"
polygon is invalid - "R 112.154 200 112.154 440 527.846 440 527.846 200 255 255 255"
polygon is invalid - "R 0 0 10 10 20 20 30 30 255 255 255"
polygon is invalid - "R 0 10 20 20 20 10 0 10 255 255 255"

Draw the Image


Now that we have a list of valid polygons, when inside our SFML draw loop we'll draw all the polygons. Loop through your polygon list, call the draw() method and pass it the window object. The sample file should generate the following image:

triangle C++

Grading Rubric


Your submission will be graded according to the following rubric:

PointsRequirement Description
0.5Submitted correctly by Tuesday, November 19, 2024 11:59 PM
0.5Project builds without errors nor warnings.
2.0Best Practices and Style Guide followed.
0.5Program follows specified user I/O flow.
0.5Public and private tests successfully passed.
2.0Fully meets specifications.
6.00Total Points


Submission


Always, always, ALWAYS update the header comments at the top of your main.cpp file. And if you ever get stuck, remember that there is LOTS of help available.

Zip together your main.cpp, Makefile, *.h, *.cpp files and name the zip file A5.zip. Upload this zip file to Canvas under A5.


→This assignment is due by Tuesday, November 19, 2024 11:59 PM.←
→ As with all assignments, this must be an individual effort and cannot be pair programmed. Any debugging assistance must follow the course collaboration policy and be cited in the comment header block for the assignment.←