Chapter 18, Problem 18RQ

Your function should use polyfit to determine the parameters of the boundary lines (assumed linear). The endpoints of the lines are noted or the graph. You should NOT calculate the slopes and intercepts manually.

You are part of a team designing a game to hit a target A “gun” will fire a short pulse of light at a light-sensitive screen, and the coordinates of the location where the pulse hits the screen will be captured in the variables X (horizontal) and Y (vertical). The values in X and Y will be between –4 and 4 unless the player misses the screen altogether, in which case both X and Y contain –99. The software and hardware to accomplish all of the above are being designed by more experienced team members.

Your task is to write a function named Classify that returns a text string indicating where on the target the light pulse hit as well as a numeric score.

As shown on the graph, the text string should contain either “Bullseye,” “Close,” “Hit,” or “Miss.” If the player missed the screen altogether, the text string should contain “Total Miss.” If the coordinates sent to the function lie exactly on a boundary, it should be classified with the area farther from the center.

The numeric score should be set according to the following list:

Bulseye:	4
Close:	2
Hit:	1
Miss:	0
Total Miss:	–1

Remember that a circle can be defined by

     $R^2=X^2+Y^2.$

where R is the radius or the circle.