/*
* 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.
*/
package org.loon.framework.android.game.core.graphics.geom;
import java.io.Serializable;
/**
* The <code>Rectangle2D</code> class describes a rectangle defined by a
* location {@code (x,y)} and dimension {@code (w x h)}.
* <p>
* This class is only the abstract superclass for all objects that store a 2D
* rectangle. The actual storage representation of the coordinates is left to
* the subclass.
*
* @author Jim Graham
* @since 1.2
*/
public abstract class Rectangle2D extends RectangularShape {
/**
* The bitmask that indicates that a point lies to the left of this
* <code>Rectangle2D</code>.
*
* @since 1.2
*/
public static final int OUT_LEFT = 1;
/**
* The bitmask that indicates that a point lies above this
* <code>Rectangle2D</code>.
*
* @since 1.2
*/
public static final int OUT_TOP = 2;
/**
* The bitmask that indicates that a point lies to the right of this
* <code>Rectangle2D</code>.
*
* @since 1.2
*/
public static final int OUT_RIGHT = 4;
/**
* The bitmask that indicates that a point lies below this
* <code>Rectangle2D</code>.
*
* @since 1.2
*/
public static final int OUT_BOTTOM = 8;
/**
* The <code>Float</code> class defines a rectangle specified in float
* coordinates.
*
* @since 1.2
*/
public static class Float extends Rectangle2D implements Serializable {
/**
* The X coordinate of this <code>Rectangle2D</code>.
*
* @since 1.2
* @serial
*/
public float x;
/**
* The Y coordinate of this <code>Rectangle2D</code>.
*
* @since 1.2
* @serial
*/
public float y;
/**
* The width of this <code>Rectangle2D</code>.
*
* @since 1.2
* @serial
*/
public float width;
/**
* The height of this <code>Rectangle2D</code>.
*
* @since 1.2
* @serial
*/
public float height;
/**
* Constructs a new <code>Rectangle2D</code>, initialized to location
* (0.0, 0.0) and size (0.0, 0.0).
*
* @since 1.2
*/
public Float() {
}
/**
* Constructs and initializes a <code>Rectangle2D</code> from the
* specified <code>float</code> coordinates.
*
* @param x
* the X coordinate of the upper-left corner of the newly
* constructed <code>Rectangle2D</code>
* @param y
* the Y coordinate of the upper-left corner of the newly
* constructed <code>Rectangle2D</code>
* @param w
* the width of the newly constructed
* <code>Rectangle2D</code>
* @param h
* the height of the newly constructed
* <code>Rectangle2D</code>
* @since 1.2
*/
public Float(float x, float y, float w, float h) {
setRect(x, y, w, h);
}
/**
* {@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 double getWidth() {
return (double) width;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public double getHeight() {
return (double) height;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public boolean isEmpty() {
return (width <= 0.0f) || (height <= 0.0f);
}
/**
* Sets the location and size of this <code>Rectangle2D</code> to the
* specified <code>float</code> values.
*
* @param x
* the X coordinate of the upper-left corner of this
* <code>Rectangle2D</code>
* @param y
* the Y coordinate of the upper-left corner of this
* <code>Rectangle2D</code>
* @param w
* the width of this <code>Rectangle2D</code>
* @param h
* the height of this <code>Rectangle2D</code>
* @since 1.2
*/
public void setRect(float x, float y, float w, float h) {
this.x = x;
this.y = y;
this.width = w;
this.height = h;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public void setRect(double x, double y, double w, double h) {
this.x = (float) x;
this.y = (float) y;
this.width = (float) w;
this.height = (float) h;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public void setRect(Rectangle2D r) {
this.x = (float) r.getX();
this.y = (float) r.getY();
this.width = (float) r.getWidth();
this.height = (float) r.getHeight();
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public int outcode(double x, double y) {
/*
* Note on casts to double below. If the arithmetic of x+w or y+h is
* done in float, then some bits may be lost if the binary exponents
* of x/y and w/h are not similar. By converting to double before
* the addition we force the addition to be carried out in double to
* avoid rounding error in the comparison.
*
* See bug 4320890 for problems that this inaccuracy causes.
*/
int out = 0;
if (this.width <= 0) {
out |= OUT_LEFT | OUT_RIGHT;
} else if (x < this.x) {
out |= OUT_LEFT;
} else if (x > this.x + (double) this.width) {
out |= OUT_RIGHT;
}
if (this.height <= 0) {
out |= OUT_TOP | OUT_BOTTOM;
} else if (y < this.y) {
out |= OUT_TOP;
} else if (y > this.y + (double) this.height) {
out |= OUT_BOTTOM;
}
return out;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public Rectangle2D getBounds2D() {
return new Float(x, y, width, height);
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public Rectangle2D createIntersection(Rectangle2D r) {
Rectangle2D dest;
if (r instanceof Float) {
dest = new Rectangle2D.Float();
} else {
dest = new Rectangle2D.Double();
}
Rectangle2D.intersect(this, r, dest);
return dest;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public Rectangle2D createUnion(Rectangle2D r) {
Rectangle2D dest;
if (r instanceof Float) {
dest = new Rectangle2D.Float();
} else {
dest = new Rectangle2D.Double();
}
Rectangle2D.union(this, r, dest);
return dest;
}
/**
* Returns the <code>String</code> representation of this
* <code>Rectangle2D</code>.
*
* @return a <code>String</code> representing this
* <code>Rectangle2D</code>.
* @since 1.2
*/
public String toString() {
return getClass().getName() + "[x=" + x + ",y=" + y + ",w=" + width
+ ",h=" + height + "]";
}
/*
* JDK 1.6 serialVersionUID
*/
private static final long serialVersionUID = 3798716824173675777L;
}
/**
* The <code>Double</code> class defines a rectangle specified in double
* coordinates.
*
* @since 1.2
*/
public static class Double extends Rectangle2D implements Serializable {
/**
* The X coordinate of this <code>Rectangle2D</code>.
*
* @since 1.2
* @serial
*/
public double x;
/**
* The Y coordinate of this <code>Rectangle2D</code>.
*
* @since 1.2
* @serial
*/
public double y;
/**
* The width of this <code>Rectangle2D</code>.
*
* @since 1.2
* @serial
*/
public double width;
/**
* The height of this <code>Rectangle2D</code>.
*
* @since 1.2
* @serial
*/
public double height;
/**
* Constructs a new <code>Rectangle2D</code>, initialized to location
* (0, 0) and size (0, 0).
*
* @since 1.2
*/
public Double() {
}
/**
* Constructs and initializes a <code>Rectangle2D</code> from the
* specified <code>double</code> coordinates.
*
* @param x
* the X coordinate of the upper-left corner of the newly
* constructed <code>Rectangle2D</code>
* @param y
* the Y coordinate of the upper-left corner of the newly
* constructed <code>Rectangle2D</code>
* @param w
* the width of the newly constructed
* <code>Rectangle2D</code>
* @param h
* the height of the newly constructed
* <code>Rectangle2D</code>
* @since 1.2
*/
public Double(double x, double y, double w, double h) {
setRect(x, y, w, h);
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public double getX() {
return x;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public double getY() {
return y;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public double getWidth() {
return width;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public double getHeight() {
return height;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public boolean isEmpty() {
return (width <= 0.0) || (height <= 0.0);
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public void setRect(double x, double y, double w, double h) {
this.x = x;
this.y = y;
this.width = w;
this.height = h;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public void setRect(Rectangle2D r) {
this.x = r.getX();
this.y = r.getY();
this.width = r.getWidth();
this.height = r.getHeight();
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public int outcode(double x, double y) {
int out = 0;
if (this.width <= 0) {
out |= OUT_LEFT | OUT_RIGHT;
} else if (x < this.x) {
out |= OUT_LEFT;
} else if (x > this.x + this.width) {
out |= OUT_RIGHT;
}
if (this.height <= 0) {
out |= OUT_TOP | OUT_BOTTOM;
} else if (y < this.y) {
out |= OUT_TOP;
} else if (y > this.y + this.height) {
out |= OUT_BOTTOM;
}
return out;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public Rectangle2D getBounds2D() {
return new Double(x, y, width, height);
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public Rectangle2D createIntersection(Rectangle2D r) {
Rectangle2D dest = new Rectangle2D.Double();
Rectangle2D.intersect(this, r, dest);
return dest;
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public Rectangle2D createUnion(Rectangle2D r) {
Rectangle2D dest = new Rectangle2D.Double();
Rectangle2D.union(this, r, dest);
return dest;
}
/**
* Returns the <code>String</code> representation of this
* <code>Rectangle2D</code>.
*
* @return a <code>String</code> representing this
* <code>Rectangle2D</code>.
* @since 1.2
*/
public String toString() {
return getClass().getName() + "[x=" + x + ",y=" + y + ",w=" + width
+ ",h=" + height + "]";
}
/*
* JDK 1.6 serialVersionUID
*/
private static final long serialVersionUID = 7771313791441850493L;
}
/**
* 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.Rectangle2D.Float
* @see and.awt.geom.Rectangle2D.Double
* @see net.pbdavey.awt.Rectangle
* @since 1.2
*/
protected Rectangle2D() {
}
/**
* Sets the location and size of this <code>Rectangle2D</code> to the
* specified <code>double</code> values.
*
* @param x
* the X coordinate of the upper-left corner of this
* <code>Rectangle2D</code>
* @param y
* the Y coordinate of the upper-left corner of this
* <code>Rectangle2D</code>
* @param w
* the width of this <code>Rectangle2D</code>
* @param h
* the height of this <code>Rectangle2D</code>
* @since 1.2
*/
public abstract void setRect(double x, double y, double w, double h);
/**
* Sets this <code>Rectangle2D</code> to be the same as the specified
* <code>Rectangle2D</code>.
*
* @param r
* the specified <code>Rectangle2D</code>
* @since 1.2
*/
public void setRect(Rectangle2D r) {
setRect(r.getX(), r.getY(), r.getWidth(), r.getHeight());
}
/**
* Tests if the specified line segment intersects the interior of this
* <code>Rectangle2D</code>.
*
* @param x1
* the X coordinate of the start point of the specified line
* segment
* @param y1
* the Y coordinate of the start point of the specified line
* segment
* @param x2
* the X coordinate of the end point of the specified line
* segment
* @param y2
* the Y coordinate of the end point of the specified line
* segment
* @return <code>true</code> if the specified line segment intersects the
* interior of this <code>Rectangle2D</code>; <code>false</code>
* otherwise.
* @since 1.2
*/
public boolean intersectsLine(double x1, double y1, double x2, double y2) {
int out1, out2;
if ((out2 = outcode(x2, y2)) == 0) {
return true;
}
while ((out1 = outcode(x1, y1)) != 0) {
if ((out1 & out2) != 0) {
return false;
}
if ((out1 & (OUT_LEFT | OUT_RIGHT)) != 0) {
double x = getX();
if ((out1 & OUT_RIGHT) != 0) {
x += getWidth();
}
y1 = y1 + (x - x1) * (y2 - y1) / (x2 - x1);
x1 = x;
} else {
double y = getY();
if ((out1 & OUT_BOTTOM) != 0) {
y += getHeight();
}
x1 = x1 + (y - y1) * (x2 - x1) / (y2 - y1);
y1 = y;
}
}
return true;
}
/**
* Tests if the specified line segment intersects the interior of this
* <code>Rectangle2D</code>.
*
* @param l
* the specified {@link Line2D} to test for intersection with the
* interior of this <code>Rectangle2D</code>
* @return <code>true</code> if the specified <code>Line2D</code> intersects
* the interior of this <code>Rectangle2D</code>; <code>false</code>
* otherwise.
* @since 1.2
*/
public boolean intersectsLine(Line2D l) {
return intersectsLine(l.getX1(), l.getY1(), l.getX2(), l.getY2());
}
/**
* Determines where the specified coordinates lie with respect to this
* <code>Rectangle2D</code>. This method computes a binary OR of the
* appropriate mask values indicating, for each side of this
* <code>Rectangle2D</code>, whether or not the specified coordinates are on
* the same side of the edge as the rest of this <code>Rectangle2D</code>.
*
* @param x
* the specified X coordinate
* @param y
* the specified Y coordinate
* @return the logical OR of all appropriate out codes.
* @see #OUT_LEFT
* @see #OUT_TOP
* @see #OUT_RIGHT
* @see #OUT_BOTTOM
* @since 1.2
*/
public abstract int outcode(double x, double y);
/**
* Determines where the specified {@link Point2D} lies with respect to this
* <code>Rectangle2D</code>. This method computes a binary OR of the
* appropriate mask values indicating, for each side of this
* <code>Rectangle2D</code>, whether or not the specified
* <code>Point2D</code> is on the same side of the edge as the rest of this
* <code>Rectangle2D</code>.
*
* @param p
* the specified <code>Point2D</code>
* @return the logical OR of all appropriate out codes.
* @see #OUT_LEFT
* @see #OUT_TOP
* @see #OUT_RIGHT
* @see #OUT_BOTTOM
* @since 1.2
*/
public int outcode(Point2D p) {
return outcode(p.getX(), p.getY());
}
/**
* Sets the location and size of the outer bounds of this
* <code>Rectangle2D</code> to the specified rectangular values.
*
* @param x
* the X coordinate of the upper-left corner of this
* <code>Rectangle2D</code>
* @param y
* the Y coordinate of the upper-left corner of this
* <code>Rectangle2D</code>
* @param w
* the width of this <code>Rectangle2D</code>
* @param h
* the height of this <code>Rectangle2D</code>
* @since 1.2
*/
public void setFrame(double x, double y, double w, double h) {
setRect(x, y, w, h);
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public Rectangle2D getBounds2D() {
return (Rectangle2D) clone();
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public boolean contains(double x, double y) {
double x0 = getX();
double y0 = getY();
return (x >= x0 && y >= y0 && x < x0 + getWidth() && y < y0
+ getHeight());
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public boolean intersects(double x, double y, double w, double h) {
if (isEmpty() || w <= 0 || h <= 0) {
return false;
}
double x0 = getX();
double y0 = getY();
return (x + w > x0 && y + h > y0 && x < x0 + getWidth() && y < y0
+ getHeight());
}
/**
* {@inheritDoc}
*
* @since 1.2
*/
public boolean contains(double x, double y, double w, double h) {
if (isEmpty() || w <= 0 || h <= 0) {
return false;
}
double x0 = getX();
double y0 = getY();
return (x >= x0 && y >= y0 && (x + w) <= x0 + getWidth() && (y + h) <= y0
+ getHeight());
}
/**
* Returns a new <code>Rectangle2D</code> object representing the
* intersection of this <code>Rectangle2D</code> with the specified
* <code>Rectangle2D</code>.
*
* @param r
* the <code>Rectangle2D</code> to be intersected with this
* <code>Rectangle2D</code>
* @return the largest <code>Rectangle2D</code> contained in both the
* specified <code>Rectangle2D</code> and in this
* <code>Rectangle2D</code>.
* @since 1.2
*/
public abstract Rectangle2D createIntersection(Rectangle2D r);
/**
* Intersects the pair of specified source <code>Rectangle2D</code> objects
* and puts the result into the specified destination
* <code>Rectangle2D</code> object. One of the source rectangles can also be
* the destination to avoid creating a third Rectangle2D object, but in this
* case the original points of this source rectangle will be overwritten by
* this method.
*
* @param src1
* the first of a pair of <code>Rectangle2D</code> objects to be
* intersected with each other
* @param src2
* the second of a pair of <code>Rectangle2D</code> objects to be
* intersected with each other
* @param dest
* the <code>Rectangle2D</code> that holds the results of the
* intersection of <code>src1</code> and <code>src2</code>
* @since 1.2
*/
public static void intersect(Rectangle2D src1, Rectangle2D src2,
Rectangle2D dest) {
double x1 = Math.max(src1.getMinX(), src2.getMinX());
double y1 = Math.max(src1.getMinY(), src2.getMinY());
double x2 = Math.min(src1.getMaxX(), src2.getMaxX());
double y2 = Math.min(src1.getMaxY(), src2.getMaxY());
dest.setFrame(x1, y1, x2 - x1, y2 - y1);
}
/**
* Returns a new <code>Rectangle2D</code> object representing the union of
* this <code>Rectangle2D</code> with the specified <code>Rectangle2D</code>
* .
*
* @param r
* the <code>Rectangle2D</code> to be combined with this
* <code>Rectangle2D</code>
* @return the smallest <code>Rectangle2D</code> containing both the
* specified <code>Rectangle2D</code> and this
* <code>Rectangle2D</code>.
* @since 1.2
*/
public abstract Rectangle2D createUnion(Rectangle2D r);
/**
* Unions the pair of source <code>Rectangle2D</code> objects and puts the
* result into the specified destination <code>Rectangle2D</code> object.
* One of the source rectangles can also be the destination to avoid
* creating a third Rectangle2D object, but in this case the original points
* of this source rectangle will be overwritten by this method.
*
* @param src1
* the first of a pair of <code>Rectangle2D</code> objects to be
* combined with each other
* @param src2
* the second of a pair of <code>Rectangle2D</code> objects to be
* combined with each other
* @param dest
* the <code>Rectangle2D</code> that holds the results of the
* union of <code>src1</code> and <code>src2</code>
* @since 1.2
*/
public static void union(Rectangle2D src1, Rectangle2D src2,
Rectangle2D dest) {
double x1 = Math.min(src1.getMinX(), src2.getMinX());
double y1 = Math.min(src1.getMinY(), src2.getMinY());
double x2 = Math.max(src1.getMaxX(), src2.getMaxX());
double y2 = Math.max(src1.getMaxY(), src2.getMaxY());
dest.setFrameFromDiagonal(x1, y1, x2, y2);
}
/**
* Adds a point, specified by the double precision arguments
* <code>newx</code> and <code>newy</code>, to this <code>Rectangle2D</code>
* . The resulting <code>Rectangle2D</code> is the smallest
* <code>Rectangle2D</code> that contains both the original
* <code>Rectangle2D</code> and the specified point.
* <p>
* After adding a point, a call to <code>contains</code> with the added
* point as an argument does not necessarily return <code>true</code>. The
* <code>contains</code> method does not return <code>true</code> for points
* on the right or bottom edges of a rectangle. Therefore, if the added
* point falls on the left or bottom edge of the enlarged rectangle,
* <code>contains</code> returns <code>false</code> for that point.
*
* @param newx
* the X coordinate of the new point
* @param newy
* the Y coordinate of the new point
* @since 1.2
*/
public void add(double newx, double newy) {
double x1 = Math.min(getMinX(), newx);
double x2 = Math.max(getMaxX(), newx);
double y1 = Math.min(getMinY(), newy);
double y2 = Math.max(getMaxY(), newy);
setRect(x1, y1, x2 - x1, y2 - y1);
}
/**
* Adds the <code>Point2D</code> object <code>pt</code> to this
* <code>Rectangle2D</code>. The resulting <code>Rectangle2D</code> is the
* smallest <code>Rectangle2D</code> that contains both the original
* <code>Rectangle2D</code> and the specified <code>Point2D</code>.
* <p>
* After adding a point, a call to <code>contains</code> with the added
* point as an argument does not necessarily return <code>true</code>. The
* <code>contains</code> method does not return <code>true</code> for points
* on the right or bottom edges of a rectangle. Therefore, if the added
* point falls on the left or bottom edge of the enlarged rectangle,
* <code>contains</code> returns <code>false</code> for that point.
*
* @param pt
* the new <code>Point2D</code> to add to this
* <code>Rectangle2D</code>.
* @since 1.2
*/
public void add(Point2D pt) {
add(pt.getX(), pt.getY());
}
/**
* Adds a <code>Rectangle2D</code> object to this <code>Rectangle2D</code>.
* The resulting <code>Rectangle2D</code> is the union of the two
* <code>Rectangle2D</code> objects.
*
* @param r
* the <code>Rectangle2D</code> to add to this
* <code>Rectangle2D</code>.
* @since 1.2
*/
public void add(Rectangle2D r) {
double x1 = Math.min(getMinX(), r.getMinX());
double x2 = Math.max(getMaxX(), r.getMaxX());
double y1 = Math.min(getMinY(), r.getMinY());
double y2 = Math.max(getMaxY(), r.getMaxY());
setRect(x1, y1, x2 - x1, y2 - y1);
}
/**
* Returns an iteration object that defines the boundary of this
* <code>Rectangle2D</code>. The iterator for this class is multi-threaded
* safe, which means that this <code>Rectangle2D</code> class guarantees
* that modifications to the geometry of this <code>Rectangle2D</code>
* object do not affect any iterations of that geometry that are already in
* process.
*
* @param at
* an optional <code>AffineTransform</code> to be applied to the
* coordinates as they are returned in the iteration, or
* <code>null</code> if untransformed coordinates are desired
* @return the <code>PathIterator</code> object that returns the geometry of
* the outline of this <code>Rectangle2D</code>, one segment at a
* time.
* @since 1.2
*/
public PathIterator getPathIterator(AffineTransform at) {
return new RectIterator(this, at);
}
/**
* Returns an iteration object that defines the boundary of the flattened
* <code>Rectangle2D</code>. Since rectangles are already flat, the
* <code>flatness</code> parameter is ignored. The iterator for this class
* is multi-threaded safe, which means that this <code>Rectangle2D</code>
* class guarantees that modifications to the geometry of this
* <code>Rectangle2D</code> object do not affect any iterations of that
* geometry that are already in process.
*
* @param at
* an optional <code>AffineTransform</code> to be applied to the
* coordinates as they are returned in the iteration, or
* <code>null</code> if untransformed coordinates are desired
* @param flatness
* the maximum distance that the line segments used to
* approximate the curved segments are allowed to deviate from
* any point on the original curve. Since rectangles are already
* flat, the <code>flatness</code> parameter is ignored.
* @return the <code>PathIterator</code> object that returns the geometry of
* the outline of this <code>Rectangle2D</code>, one segment at a
* time.
* @since 1.2
*/
public PathIterator getPathIterator(AffineTransform at, double flatness) {
return new RectIterator(this, at);
}
/**
* Returns the hashcode for this <code>Rectangle2D</code>.
*
* @return the hashcode for this <code>Rectangle2D</code>.
* @since 1.2
*/
public int hashCode() {
long bits = java.lang.Double.doubleToLongBits(getX());
bits += java.lang.Double.doubleToLongBits(getY()) * 37;
bits += java.lang.Double.doubleToLongBits(getWidth()) * 43;
bits += java.lang.Double.doubleToLongBits(getHeight()) * 47;
return (((int) bits) ^ ((int) (bits >> 32)));
}
/**
* Determines whether or not the specified <code>Object</code> is equal to
* this <code>Rectangle2D</code>. The specified <code>Object</code> is equal
* to this <code>Rectangle2D</code> if it is an instance of
* <code>Rectangle2D</code> and if its location and size are the same as
* this <code>Rectangle2D</code>.
*
* @param obj
* an <code>Object</code> to be compared with this
* <code>Rectangle2D</code>.
* @return <code>true</code> if <code>obj</code> is an instance of
* <code>Rectangle2D</code> and has the same values;
* <code>false</code> otherwise.
* @since 1.2
*/
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (obj instanceof Rectangle2D) {
Rectangle2D r2d = (Rectangle2D) obj;
return ((getX() == r2d.getX()) && (getY() == r2d.getY())
&& (getWidth() == r2d.getWidth()) && (getHeight() == r2d
.getHeight()));
}
return false;
}
}
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