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/*
* Copyright 2013 Jesse Morgan
*/
package com.p4square.grow.model;
/**
* Simple double based point class.
*
* @author Jesse Morgan <jesse@jesterpm.net>
*/
public class Point {
/**
* Parse a comma separated x,y pair into a point.
*
* @return The point represented by the string.
* @throws IllegalArgumentException if the input is malformed.
*/
public static Point valueOf(String str) {
final int comma = str.indexOf(',');
if (comma == -1 || comma == 0 || comma == str.length() - 1) {
throw new IllegalArgumentException("Malformed point string");
}
final String sX = str.substring(0, comma);
final String sY = str.substring(comma + 1);
return new Point(Double.valueOf(sX), Double.valueOf(sY));
}
private final double mX;
private final double mY;
/**
* Create a new point with the given coordinates.
*
* @param x The x coordinate.
* @param y The y coordinate.
*/
public Point(double x, double y) {
mX = x;
mY = y;
}
/**
* Compute the distance between this point and another.
*
* @param other The other point.
* @return The distance between this point and other.
*/
public double distance(Point other) {
final double dx = mX - other.mX;
final double dy = mY - other.mY;
return Math.sqrt(dx*dx + dy*dy);
}
/**
* @return The x coordinate.
*/
public double getX() {
return mX;
}
/**
* @return The y coordinate.
*/
public double getY() {
return mY;
}
/**
* @return The point represented as a comma separated pair.
*/
@Override
public String toString() {
return String.format("%.2f,%.2f", mX, mY);
}
}
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