cse1030.test2

Class PointInSquare

java.lang.Object

cse1030.test2.PointMatcher

cse1030.test2.PointInSquare

public class PointInSquare
extends PointMatcher

A class for finding two dimensional points that are strictly within a square neighbourhood surrounding a point.

Author:

CSE1030_F13_14

Field Summary

Fields inherited from class cse1030.test2.PointMatcher

point

Constructor Summary

Constructors

Constructor and Description
PointInSquare(Point2D p, double halfLength) Creates an object that matches all points strictly within a square neighbourhood surrounding the point p.

Method Summary

Methods

Modifier and Type	Method and Description
double	getHalfLength() Returns the size of the square neighbourhood used for matching.
boolean	matches(Point2D other) Checks if the point other is strictly inside the square neighbourhood surrounding the point held by this matcher.

Methods inherited from class cse1030.test2.PointMatcher

getPoint, setPoint

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PointInSquare

public PointInSquare(Point2D p,
             double halfLength)

Creates an object that matches all points strictly within a square neighbourhood surrounding the point p. The size of the square is determined by the parameter halfLength which is one half of the length of the side of the square (see figure below).

Parameters:

p - the point at the center of the square neighbourhood

halfLength - half the length of the side of the square

Method Detail

getHalfLength

public double getHalfLength()

Returns the size of the square neighbourhood used for matching. The size is equal to one-half of the length of the side of the square.

Returns:

the half length of the side of the square neighbourhood

matches

public boolean matches(Point2D other)

Checks if the point other is strictly inside the square neighbourhood surrounding the point held by this matcher. If other has coordinates (x, y), and the point held by this matcher has coordinates (px, py), and the half length of the square neighbourhood is h, then the result is true if and only if:

| px - x | < h is true

AND

| py - y | < h is true

Overrides:

matches in class PointMatcher

See Also:

PointMatcher.matches(cse1030.drawing.Point2D)

Parameters:

other - the point to check for a match

Returns:

true if other is strictly inside the square neighbourhood surround the point held by this matcher