CpSc 210, Section 1
                             Assignment 3 
                           February 14, 2001 


Due: Thursday, February 22 by 11:59 p.m.

Assignment:  Complete the Triangle class given in pages 228-233
of Java Elements.  In addition to the methods listed in the
Drawable interface (page 228), include

    public Object clone ();
    // post:  Returns a field-for-field copy of this.

    public boolean equals ( Triangle other );
    // pre:  other is a valid Triangle
    // post:  Returns true if there is a 1-1 correspondence between
    //        vertices.  The order of the points may be different.

    public String toString ( );
    // post:  Returns a String representation of the Triangle

If you are not sure what a method should do, check what the corresponding
method does in the Rect class.
       


Late penalties: 20 points per partial day late.  That is, programs
	turned in after 11:59 p.m Thursday and before 11:59 p.m. Friday
	will have 20 points deducted for late.  Programs will not be
	be accepted after 11:59 p.m. Friday, February 23.

Total point value of assignment:  100 points plus extra credit

This assignment is to be done INDIVIDUALLY.



Create a directory, A3, which will contain all parts of this assignment.
(In this assignment the directory A3 will contain a single file
named Triangle.java. ) 

The primary objective of this program is to give you practice with the
design and implementation of a class for the drawing window.  We may
later talk about a more general class, the Ngon.


Other requirements:

	Follow the style standards to be found on your instructor's
	web page for CPSC 210.

	Submit your program using the handin command.  There is a link to
	the handin description on your lab page (www.cs.clemson.edu/~lab210).


Grading rubric:

	In the opinion of the instructor the program is an honest attempt
	to complete the assignment as described  10 points.

	If the above requirement is met and required documentation and
	style standards are used.   10 points.

	The previous requirements are substantially met and the program compiles 
	without error.  10 points.

	The following points are available only to programs that
	compile without error:   Methods will be tested in the order
	given.  If any method causes program termination, no further
	testing will be done.                

	The methods width(), right(), bottom(), and top() are worth 
	5 points each for a total of 20 points.

	The methods clone(), equals, and toString() are worth 10 points
	each for a total of 30 points.

	The main method should check all the other methods for correctness.
	It should check every method at least once and print a message
	if an error is detected.  The main method should also write a
	message if all methods work correctly.  Comments should describe
	the testing clearly.  Quality of test program:  20 pts.

	Thus, this programming assignment is worth a total of 100 points.

	Extra credit:  The fillOn method in the text is "fudged" --
	that is, code is inserted but the method does not fill a triangle.
	If the above 100 points have been satisfied (within a point or two)
	you may attempt extra credit for fillOn:  10 points if fillOn
	fills the triangle.  An additional 10 points if fillOn works
	correctly with invertMode().