Description
In this assignment you’ll write code to build the convex hull of a set
of 2D points. Undergraduates may work in groups of two. Graduate
students must work individually.
1. Get the main.py code running. READ ALL OF THE CODE AND UNDERSTAND
HOW IT WORKS.
2. Modify buildHull() to handle the base cases in which you have two
or three points. In those cases, you should form the hull
directly. To do so, set the ‘cwPoint’ and ‘ccwPoint’ fields of
each of the two or three points. These fields should be set to be
the points on the hull directly CW and CCW of the point in
question. Do not continue to the next step until you get this
working and have tested it visually.
3. Modify buildHull() to handle the recursive case. This will take
time. At each step of implementation, you should check your
algorithm with the visual animation. Read the code comments to see
how that animation works with the display() function.
4. Modify buildHull() to discard the points that are no longer on the
hull after each merge. These points are “discarded” by setting
their ‘cwPoint’ and ‘ccwPoint’ to None. Do not remove these points
from the ‘allPoints’ list. Be careful NOT TO DISCARD points that
are on the hull after the merge.
To submit:
Submit two files with EXACTLY THESE NAMES.
README.txt – containing the name, student number, and netID of each
person working on the assignment. Include here any
comments you have for the TA.
main.py – the modified code, well commented.
YOU WILL LOSE MARKS IF YOU DO NOT SUBMIT TWO FILES WITH EXACTLY THE
NAMES ABOVE.
IN A GROUP OF TWO, ONLY ONE PERSON MAY SUBMIT THE ASSIGNMENT. IF
YOUR GROUP SUBMITS TWO ASSIGNMENTS, YOU WILL LOSE MARKS.
For marking, we will read your code for correctness, clarity, and
quality, and we will run your code.
