2 * $RCSfile: Point2d.java,v $
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28 * $Date: 2008/02/28 20:18:50 $
32 package javax.vecmath;
34 import java.lang.Math;
37 * A 2 element point that is represented by double precision floating
38 * point x,y coordinates.
41 public class Point2d extends Tuple2d implements java.io.Serializable {
43 // Compatible with 1.1
44 static final long serialVersionUID = 1133748791492571954L;
47 * Constructs and initializes a Point2d from the specified xy coordinates.
48 * @param x the x coordinate
49 * @param y the y coordinate
51 public Point2d(double x, double y)
58 * Constructs and initializes a Point2d from the specified array.
59 * @param p the array of length 2 containing xy in order
61 public Point2d(double[] p)
68 * Constructs and initializes a Point2d from the specified Point2d.
69 * @param p1 the Point2d containing the initialization x y data
71 public Point2d(Point2d p1)
78 * Constructs and initializes a Point2d from the specified Point2f.
79 * @param p1 the Point2f containing the initialization x y data
81 public Point2d(Point2f p1)
88 * Constructs and initializes a Point2d from the specified Tuple2d.
89 * @param t1 the Tuple2d containing the initialization x y data
91 public Point2d(Tuple2d t1)
98 * Constructs and initializes a Point2d from the specified Tuple2f.
99 * @param t1 the Tuple2f containing the initialization x y data
101 public Point2d(Tuple2f t1)
108 * Constructs and initializes a Point2d to (0,0).
116 * Computes the square of the distance between this point and point p1.
117 * @param p1 the other point
119 public final double distanceSquared(Point2d p1)
129 * Computes the distance between this point and point p1.
130 * @param p1 the other point
132 public final double distance(Point2d p1)
138 return Math.sqrt(dx*dx+dy*dy);
143 * Computes the L-1 (Manhattan) distance between this point and
144 * point p1. The L-1 distance is equal to abs(x1-x2) + abs(y1-y2).
145 * @param p1 the other point
147 public final double distanceL1(Point2d p1)
149 return( Math.abs(this.x-p1.x) + Math.abs(this.y-p1.y));
153 * Computes the L-infinite distance between this point and
154 * point p1. The L-infinite distance is equal to
155 * MAX[abs(x1-x2), abs(y1-y2)].
156 * @param p1 the other point
158 public final double distanceLinf(Point2d p1)
160 return(Math.max( Math.abs(this.x-p1.x), Math.abs(this.y-p1.y)));