File	Doc	Category	Size	Date	Package
Point2D.java	API Doc	Java SE 5 API	10442	Fri Aug 26 14:56:52 BST 2005	java.awt.geom

Point2D

• java.lang.Object

Fields Summary

Constructors Summary
protected Point2D() This is an abstract class that cannot be instantiated directly. Type-specific implementation subclasses are available for instantiation and provide a number of formats for storing the information necessary to satisfy the various accessor methods below. see java.awt.geom.Point2D.Float see java.awt.geom.Point2D.Double see java.awt.Point

Methods Summary
public java.lang.Object	clone() Creates a new object of the same class and with the same contents as this object. return a clone of this instance. exception OutOfMemoryError if there is not enough memory. see java.lang.Cloneable since 1.2 try { return super.clone(); } catch (CloneNotSupportedException e) { // this shouldn't happen, since we are Cloneable throw new InternalError(); }
public double	distance(double PX, double PY) Returns the distance from this Point2D to a specified point. param PX, PY the coordinates of the specified Point2D return the distance between this Point2D and a specified point. PX -= getX(); PY -= getY(); return Math.sqrt(PX * PX + PY * PY);
public double	distance(java.awt.geom.Point2D pt) Returns the distance from this Point2D to a specified Point2D. param pt the specified Point2D return the distance between this Point2D and the specified Point2D. double PX = pt.getX() - this.getX(); double PY = pt.getY() - this.getY(); return Math.sqrt(PX * PX + PY * PY);
public static double	distance(double X1, double Y1, double X2, double Y2) Returns the distance between two points. param X1, Y1 the coordinates of the first point param X2, Y2 the coordinates of the second point return the distance between the two sets of specified coordinates. X1 -= X2; Y1 -= Y2; return Math.sqrt(X1 * X1 + Y1 * Y1);
public static double	distanceSq(double X1, double Y1, double X2, double Y2) Returns the square of the distance between two points. param X1, Y1 the coordinates of the first point param X2, Y2 the coordinates of the second point return the square of the distance between the two sets of specified coordinates. X1 -= X2; Y1 -= Y2; return (X1 * X1 + Y1 * Y1);
public double	distanceSq(double PX, double PY) Returns the square of the distance from this Point2D to a specified point. param PX, PY the coordinates of the other point return the square of the distance between this Point2D and the specified point. PX -= getX(); PY -= getY(); return (PX * PX + PY * PY);
public double	distanceSq(java.awt.geom.Point2D pt) Returns the square of the distance from this Point2D to a specified Point2D. param pt the specified Point2D return the square of the distance between this Point2D to a specified Point2D. double PX = pt.getX() - this.getX(); double PY = pt.getY() - this.getY(); return (PX * PX + PY * PY);
public boolean	equals(java.lang.Object obj) Determines whether or not two points are equal. Two instances of Point2D are equal if the values of their x and y member fields, representing their position in the coordinate space, are the same. param obj an object to be compared with this Point2D return true if the object to be compared is an instance of Point2D and has the same values; false otherwise. since 1.2 if (obj instanceof Point2D) { Point2D p2d = (Point2D) obj; return (getX() == p2d.getX()) && (getY() == p2d.getY()); } return super.equals(obj);
public abstract double	getX() Returns the X coordinate of this Point2D in double precision. return the X coordinate of this Point2D. since 1.2
public abstract double	getY() Returns the Y coordinate of this Point2D in double precision. return the Y coordinate of this Point2D. since 1.2
public int	hashCode() Returns the hashcode for this Point2D. return a hash code for this Point2D. long bits = java.lang.Double.doubleToLongBits(getX()); bits ^= java.lang.Double.doubleToLongBits(getY()) * 31; return (((int) bits) ^ ((int) (bits >> 32)));
public abstract void	setLocation(double x, double y) Sets the location of this Point2D to the specified double coordinates. param x, y the coordinates of this Point2D since 1.2
public void	setLocation(java.awt.geom.Point2D p) Sets the location of this Point2D to the same coordinates as the specified Point2D object. param p the specified Point2D the which to set this Point2D since 1.2 setLocation(p.getX(), p.getY());