22C22 Homework 1

Homework 3

22C:22 Object-oriented Software Development
Due Friday, February 9, 2007

15 points

Do Exercise 5.1 on page 204 of the textbook, with the following additions/modifications:
- in addition to LineSegment, Rectange, and Circle, (and Shape) provide classes Square and Polygon.
- contrary to what the last line of Exercise 5.1 says, you may not assume that the input file contains less than or equal to 100 shapes
- use a simpler format for the input text file. The format is:
```
        n
        shape-1
        shape-2
        ...
        shape-n
```
  where n is the number of shape specifications that the file contains and where each shape-i line is of one of the forms
```
        LineSegment x1 y1 x2 y2
        Rectangle x y width height
        Circle x y radius
        Square x y width
        Polygon m x1 y1 x2 y2 ... xm ym 
                (where m is the number of points/sides of the polygon)   
```

NOTE: It is important that you design these classes well, since you will re-use them in the next assignment in which you will create shapes interactively in a GUI.

NOTE: The book has a little typo that might be confusing. It says "Implement a simple class hierarchy of shapes, which consists of an interface. Shape and ..."
The '.' should be a comma (plus another comma is needed) yielding "... consists of an interface, Shape, and ..."