CSc 22100: Software Design Laboratory Assignment 2 Solved

CSc 22100: Software Design Laboratory

Assignment 2 

 

A report uploaded on the Blackboard’s course page for the section showing [1] the problem, [2] solution methods, [3] codes developed, and [4] outputs produced for the assignment indicated. The deadline is strictly observed.

 

1-         Amend the hierarchy of Java classes in Assignment 1 as follows:

 

MyLine is_a MyShape;

MyRectangle is_a MyShape

MyOval is_a MyShape;

MyCircle is_a MyOval;

MyPolygon is_a MyShape.

 

2-         Class MyShape is an abstract class; is the hierarchy’s superclass; and inherits Java class Object. The draw method in class MyShape is an abstract method and hence must be overridden in each subclass in the hierarchy.  Further, the reference point of MyShape, p(x, y), is an object of class MyPoint.  Otherwise, the classes MyShape, MyLine, MyPolygon, and MyCircle are defined as in Assignment 1, but now utilize:

 

Class MyPoint:

 

Class MyPoint is used by class MyShape to define the reference point p(x, y) of the Java display coordinate system.  The class includes appropriate class constructors and methods, including methods that perform point related operations.

 

Class MyRectangle:

 

Class MyRectangle inherits class MyShape.  The MyRectangle object is a rectangle of height h and width w, and a top left corner point p(x, y), and may be filled with a color.  The class includes appropriate class constructors and methods, including methods that perform the following operations:

 

a.         getWidth, getHeight, getPerimeter, getArea— return the width, height, perimeter, and area of the MyRectangle object;

b.         setWidth, setHeight — set the width and height of the MyRectangle object;

c.         toString— returns a string representation of the MyRectangle object: top left corner point, width, height, perimeter, and area;

d.         draw— draws a MyRectangle object of height h and width w, and anchored at p(x, y).

 

Class MyOval:

 

Class MyOval inherits class MyShape and like other subclasses in hierarchy may use class MyRectangle.  The MyOval object is defined by an ellipse inscribed in a rectangle of height h and width w, and a top left corner point p(x, y).  The MyOval object may be filled with a color.  The class includes appropriate class constructors and methods, including methods that perform the following operations:

 

a.         getPerimeter, get Area, getCenter— returns the perimeter, area, and center point of the MyOval object;

b.         setAxes, setCenter— sets the axes lengths and center point of the MyOval

object;

c.         toString— returns a string representation of the MyOval object: axes lengths, perimeter, and area;

d.         draw— draws a MyOval object inscribed in a rectangle of height h and width w, and anchored at p(x, y).

 

3-         Interface MyShapeInterface is implemented by class MyShape.  All classes of the hierarchy must be amended in accordance with the interface. The interface includes appropriate constants and abstract, static, and/or default methods that describe the functions and behaviors of the specific object types of the class hierarchy, including:

 

a.         getMyBoundingRectangle— returns the bounding rectangle of an object in the class hierarchy;

b.         getMyArea— returns the area of an object in the class hierarchy— i.e., the set of all points on and within the boundary of the object;

c.         overlapMyShapes— returns the intersecting area of two objects in the class hierarchy if they do overlap; and null otherwise.

 

4-         Use JavaFX graphics and the class hierarchy to draw a geometric configuration comprised of a sequence of alternating concentric ovals and their inscribed rectangles as illustrated below, subject to the following additional requirements:

 

a.         The code is applicable to canvases of variable height and width;

b.         The dimensions of the shapes are proportional to the smallest dimension of the canvas;

c.         The hexagons and circles are filled with different colors of your choice, specified through a MyColor enum reference type.

 

5-         Explicitly specify all the classes imported and used in your Java code.