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package armyc2.c2sd.graphics2d;
import armyc2.c2sd.JavaLineArray.POINT2;
/*
* Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
import java.io.Serializable;
/**
* The <code>Point2D</code> class defines a point representing a location in
* {@code (x,y)} coordinate space.
* <p>
* This class is only the abstract superclass for all objects that store a 2D
* coordinate. The actual storage representation of the coordinates is left to
* the subclass.
*
* @author Jim Graham
* @since 1.2
*/
public abstract class Point2D implements Cloneable{
/**
* The <code>Float</code> class defines a point specified in float
* precision.
*
* @since 1.2
*/
public static class Float extends Point2D implements Serializable {
/**
* The X coordinate of this <code>Point2D</code>.
*
* @since 1.2
* @serial
*/
public float x;
/**
* The Y coordinate of this <code>Point2D</code>.
*
* @since 1.2
* @serial
*/
public float y;
/**
* Constructs and initializes a <code>Point2D</code> with coordinates
* (0, 0).
*
* @since 1.2
*/
public Float() {
}
/**
* Constructs and initializes a <code>Point2D</code> with the specified
* coordinates.
*
* @param x
* the X coordinate of the newly constructed
* <code>Point2D</code>
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http://www.java2s.com/Open-Source/Android/App/android-app-examples/org/loon/frame... 2/25/2013
* @param y
* the Y coordinate of the newly constructed
* <code>Point2D</code>
* @since 1.2
*/
public Float(float x, float y) {
this.x = x;
this.y = y;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public double getX() {
return (double) x;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public double getY() {
return (double) y;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public void setLocation(double x, double y) {
this.x = (float) x;
this.y = (float) y;
}
/**
* Sets the location of this <code>Point2D</code> to the specified
* <code>float</code> coordinates.
*
* @param x
* the new X coordinate of this {@code Point2D}
* @param y
* the new Y coordinate of this {@code Point2D}
* @since 1.2
*/
public void setLocation(float x, float y) {
this.x = x;
this.y = y;
}
/**
* Returns a <code>String</code> that represents the value of this
* <code>Point2D</code>.
*
* @return a string representation of this <code>Point2D</code>.
* @since 1.2
*/
public String toString() {
return "Point2D.Float[" + x + ", " + y + "]";
}
/*
* JDK 1.6 serialVersionUID
*/
private static final long serialVersionUID = -2870572449815403710L;
}
/**
* The <code>Double</code> class defines a point specified in
* <code>double</code> precision.
*
* @since 1.2
*/
public static class Double extends Point2D implements Serializable {
/**
* The X coordinate of this <code>Point2D</code>.
*
* @since 1.2
* @serial
*/
public double x;
/**
* The Y coordinate of this <code>Point2D</code>.
*
* @since 1.2
* @serial
*/
public double y;
/**
* Constructs and initializes a <code>Point2D</code> with coordinates
* (0, 0).
*
* @since 1.2
*/
public Double() {
}
/**
* Constructs and initializes a <code>Point2D</code> with the specified
* coordinates.
*
* @param x
* the X coordinate of the newly constructed
* <code>Point2D</code>
* @param y
* the Y coordinate of the newly constructed
* <code>Point2D</code>
* @since 1.2
*/
public Double(double x, double y) {
this.x = x;
this.y = y;
}
/**
* add the constructor
* @param pt
*/
public Double(POINT2 pt)
{
this.x=pt.x;
this.y=pt.y;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public double getX() {
return x;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public double getY() {
return y;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public void setLocation(double x, double y) {
this.x = x;
this.y = y;
}
/**
* Returns a <code>String</code> that represents the value of this
* <code>Point2D</code>.
*
* @return a string representation of this <code>Point2D</code>.
* @since 1.2
*/
public String toString() {
return "Point2D.Double[" + x + ", " + y + "]";
}
/*
* JDK 1.6 serialVersionUID
*/
private static final long serialVersionUID = 6150783262733311327L;
}
/**
* 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 and.awt.geom.Point2D.Float
* @see and.awt.geom.Point2D.Double
* @see and.awt.Point
* @since 1.2
*/
protected Point2D() {
}
/**
* Returns the X coordinate of this <code>Point2D</code> in
* <code>double</code> precision.
*
Point2D.java : » App » android-app-examples » org » loon » framework » android » gam... Page 3 of 6
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* @return the X coordinate of this <code>Point2D</code>.
* @since 1.2
*/
public abstract double getX();
/**
* Returns the Y coordinate of this <code>Point2D</code> in
* <code>double</code> precision.
*
* @return the Y coordinate of this <code>Point2D</code>.
* @since 1.2
*/
public abstract double getY();
/**
* Sets the location of this <code>Point2D</code> to the specified
* <code>double</code> coordinates.
*
* @param x
* the new X coordinate of this {@code Point2D}
* @param y
* the new Y coordinate of this {@code Point2D}
* @since 1.2
*/
public abstract void setLocation(double x, double y);
/**
* Sets the location of this <code>Point2D</code> to the same coordinates as
* the specified <code>Point2D</code> object.
*
* @param p
* the specified <code>Point2D</code> to which to set this
* <code>Point2D</code>
* @since 1.2
*/
public void setLocation(Point2D p) {
setLocation(p.getX(), p.getY());
}
/**
* Returns the square of the distance between two points.
*
* @param x1
* the X coordinate of the first specified point
* @param y1
* the Y coordinate of the first specified point
* @param x2
* the X coordinate of the second specified point
* @param y2
* the Y coordinate of the second specified point
* @return the square of the distance between the two sets of specified
* coordinates.
* @since 1.2
*/
public static double distanceSq(double x1, double y1, double x2, double y2) {
x1 -= x2;
y1 -= y2;
return (x1 * x1 + y1 * y1);
}
/**
* Returns the distance between two points.
*
* @param x1
* the X coordinate of the first specified point
* @param y1
* the Y coordinate of the first specified point
* @param x2
* the X coordinate of the second specified point
* @param y2
* the Y coordinate of the second specified point
* @return the distance between the two sets of specified coordinates.
* @since 1.2
*/
public static double distance(double x1, double y1, double x2, double y2) {
x1 -= x2;
y1 -= y2;
return Math.sqrt(x1 * x1 + y1 * y1);
}
/**
* Determines whether or not two points are equal. Two instances of
* <code>Point2D</code> are equal if the values of their <code>x</code> and
* <code>y</code> member fields, representing their position in the
* coordinate space, are the same.
*
* @param obj
* an object to be compared with this <code>Point2D</code>
* @return <code>true</code> if the object to be compared is an instance of
* <code>Point2D</code> and has the same values; <code>false</code>
* otherwise.
* @since 1.2
*/
public boolean equals(Object obj) {
if (obj instanceof Point2D) {
Point2D p2d = (Point2D) obj;
return (getX() == p2d.getX()) && (getY() == p2d.getY());
}
return super.equals(obj);
}
}