author | neugens |
Sat, 03 Dec 2011 15:40:49 +0100 | |
changeset 11080 | 7e18e343964e |
parent 9469 | b8ea6866765a |
child 21278 | ef8a3a2a72f2 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package java.awt.geom; |
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import java.awt.Shape; |
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import java.awt.Rectangle; |
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import sun.awt.geom.Curve; |
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import java.io.Serializable; |
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import java.io.StreamCorruptedException; |
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import java.util.Arrays; |
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/** |
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* The {@code Path2D} class provides a simple, yet flexible |
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* shape which represents an arbitrary geometric path. |
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* It can fully represent any path which can be iterated by the |
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* {@link PathIterator} interface including all of its segment |
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* types and winding rules and it implements all of the |
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* basic hit testing methods of the {@link Shape} interface. |
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* <p> |
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* Use {@link Path2D.Float} when dealing with data that can be represented |
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* and used with floating point precision. Use {@link Path2D.Double} |
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* for data that requires the accuracy or range of double precision. |
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* <p> |
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* {@code Path2D} provides exactly those facilities required for |
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* basic construction and management of a geometric path and |
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* implementation of the above interfaces with little added |
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* interpretation. |
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* If it is useful to manipulate the interiors of closed |
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* geometric shapes beyond simple hit testing then the |
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* {@link Area} class provides additional capabilities |
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* specifically targeted at closed figures. |
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* While both classes nominally implement the {@code Shape} |
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* interface, they differ in purpose and together they provide |
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* two useful views of a geometric shape where {@code Path2D} |
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* deals primarily with a trajectory formed by path segments |
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* and {@code Area} deals more with interpretation and manipulation |
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* of enclosed regions of 2D geometric space. |
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* <p> |
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* The {@link PathIterator} interface has more detailed descriptions |
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* of the types of segments that make up a path and the winding rules |
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* that control how to determine which regions are inside or outside |
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* the path. |
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* |
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* @author Jim Graham |
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* @since 1.6 |
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*/ |
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public abstract class Path2D implements Shape, Cloneable { |
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/** |
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* An even-odd winding rule for determining the interior of |
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* a path. |
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* |
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* @see PathIterator#WIND_EVEN_ODD |
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* @since 1.6 |
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*/ |
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public static final int WIND_EVEN_ODD = PathIterator.WIND_EVEN_ODD; |
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/** |
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* A non-zero winding rule for determining the interior of a |
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* path. |
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* |
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* @see PathIterator#WIND_NON_ZERO |
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* @since 1.6 |
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*/ |
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public static final int WIND_NON_ZERO = PathIterator.WIND_NON_ZERO; |
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// For code simplicity, copy these constants to our namespace |
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// and cast them to byte constants for easy storage. |
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private static final byte SEG_MOVETO = (byte) PathIterator.SEG_MOVETO; |
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private static final byte SEG_LINETO = (byte) PathIterator.SEG_LINETO; |
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private static final byte SEG_QUADTO = (byte) PathIterator.SEG_QUADTO; |
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private static final byte SEG_CUBICTO = (byte) PathIterator.SEG_CUBICTO; |
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private static final byte SEG_CLOSE = (byte) PathIterator.SEG_CLOSE; |
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transient byte[] pointTypes; |
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transient int numTypes; |
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transient int numCoords; |
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transient int windingRule; |
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static final int INIT_SIZE = 20; |
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static final int EXPAND_MAX = 500; |
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/** |
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* Constructs a new empty {@code Path2D} object. |
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* It is assumed that the package sibling subclass that is |
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* defaulting to this constructor will fill in all values. |
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* |
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* @since 1.6 |
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*/ |
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/* private protected */ |
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Path2D() { |
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} |
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/** |
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* Constructs a new {@code Path2D} object from the given |
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* specified initial values. |
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* This method is only intended for internal use and should |
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* not be made public if the other constructors for this class |
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* are ever exposed. |
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* |
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* @param rule the winding rule |
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* @param initialTypes the size to make the initial array to |
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* store the path segment types |
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* @since 1.6 |
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*/ |
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/* private protected */ |
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Path2D(int rule, int initialTypes) { |
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setWindingRule(rule); |
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this.pointTypes = new byte[initialTypes]; |
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} |
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abstract float[] cloneCoordsFloat(AffineTransform at); |
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abstract double[] cloneCoordsDouble(AffineTransform at); |
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abstract void append(float x, float y); |
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abstract void append(double x, double y); |
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abstract Point2D getPoint(int coordindex); |
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abstract void needRoom(boolean needMove, int newCoords); |
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abstract int pointCrossings(double px, double py); |
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abstract int rectCrossings(double rxmin, double rymin, |
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double rxmax, double rymax); |
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/** |
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* The {@code Float} class defines a geometric path with |
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* coordinates stored in single precision floating point. |
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* |
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* @since 1.6 |
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*/ |
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public static class Float extends Path2D implements Serializable { |
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transient float floatCoords[]; |
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/** |
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* Constructs a new empty single precision {@code Path2D} object |
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* with a default winding rule of {@link #WIND_NON_ZERO}. |
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* |
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* @since 1.6 |
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*/ |
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public Float() { |
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this(WIND_NON_ZERO, INIT_SIZE); |
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} |
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/** |
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* Constructs a new empty single precision {@code Path2D} object |
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* with the specified winding rule to control operations that |
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* require the interior of the path to be defined. |
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* |
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* @param rule the winding rule |
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* @see #WIND_EVEN_ODD |
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* @see #WIND_NON_ZERO |
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* @since 1.6 |
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*/ |
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public Float(int rule) { |
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this(rule, INIT_SIZE); |
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} |
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/** |
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* Constructs a new empty single precision {@code Path2D} object |
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* with the specified winding rule and the specified initial |
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* capacity to store path segments. |
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* This number is an initial guess as to how many path segments |
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* will be added to the path, but the storage is expanded as |
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* needed to store whatever path segments are added. |
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* |
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* @param rule the winding rule |
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* @param initialCapacity the estimate for the number of path segments |
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* in the path |
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* @see #WIND_EVEN_ODD |
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* @see #WIND_NON_ZERO |
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* @since 1.6 |
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*/ |
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public Float(int rule, int initialCapacity) { |
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super(rule, initialCapacity); |
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floatCoords = new float[initialCapacity * 2]; |
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} |
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/** |
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* Constructs a new single precision {@code Path2D} object |
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* from an arbitrary {@link Shape} object. |
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* All of the initial geometry and the winding rule for this path are |
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* taken from the specified {@code Shape} object. |
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* |
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* @param s the specified {@code Shape} object |
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* @since 1.6 |
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*/ |
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public Float(Shape s) { |
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this(s, null); |
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} |
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/** |
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* Constructs a new single precision {@code Path2D} object |
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* from an arbitrary {@link Shape} object, transformed by an |
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* {@link AffineTransform} object. |
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* All of the initial geometry and the winding rule for this path are |
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* taken from the specified {@code Shape} object and transformed |
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* by the specified {@code AffineTransform} object. |
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* |
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* @param s the specified {@code Shape} object |
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* @param at the specified {@code AffineTransform} object |
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* @since 1.6 |
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*/ |
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public Float(Shape s, AffineTransform at) { |
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if (s instanceof Path2D) { |
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Path2D p2d = (Path2D) s; |
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setWindingRule(p2d.windingRule); |
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this.numTypes = p2d.numTypes; |
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this.pointTypes = Arrays.copyOf(p2d.pointTypes, |
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p2d.pointTypes.length); |
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this.numCoords = p2d.numCoords; |
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this.floatCoords = p2d.cloneCoordsFloat(at); |
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} else { |
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PathIterator pi = s.getPathIterator(at); |
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setWindingRule(pi.getWindingRule()); |
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this.pointTypes = new byte[INIT_SIZE]; |
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this.floatCoords = new float[INIT_SIZE * 2]; |
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append(pi, false); |
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} |
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} |
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float[] cloneCoordsFloat(AffineTransform at) { |
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float ret[]; |
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if (at == null) { |
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ret = Arrays.copyOf(this.floatCoords, this.floatCoords.length); |
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} else { |
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ret = new float[floatCoords.length]; |
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at.transform(floatCoords, 0, ret, 0, numCoords / 2); |
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} |
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return ret; |
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} |
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double[] cloneCoordsDouble(AffineTransform at) { |
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double ret[] = new double[floatCoords.length]; |
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if (at == null) { |
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for (int i = 0; i < numCoords; i++) { |
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ret[i] = floatCoords[i]; |
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} |
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} else { |
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at.transform(floatCoords, 0, ret, 0, numCoords / 2); |
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} |
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return ret; |
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} |
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void append(float x, float y) { |
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floatCoords[numCoords++] = x; |
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floatCoords[numCoords++] = y; |
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} |
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void append(double x, double y) { |
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floatCoords[numCoords++] = (float) x; |
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floatCoords[numCoords++] = (float) y; |
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} |
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Point2D getPoint(int coordindex) { |
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return new Point2D.Float(floatCoords[coordindex], |
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floatCoords[coordindex+1]); |
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} |
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void needRoom(boolean needMove, int newCoords) { |
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if (needMove && numTypes == 0) { |
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throw new IllegalPathStateException("missing initial moveto "+ |
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"in path definition"); |
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} |
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int size = pointTypes.length; |
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if (numTypes >= size) { |
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int grow = size; |
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if (grow > EXPAND_MAX) { |
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grow = EXPAND_MAX; |
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} |
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pointTypes = Arrays.copyOf(pointTypes, size+grow); |
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} |
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size = floatCoords.length; |
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if (numCoords + newCoords > size) { |
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int grow = size; |
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if (grow > EXPAND_MAX * 2) { |
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grow = EXPAND_MAX * 2; |
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} |
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if (grow < newCoords) { |
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grow = newCoords; |
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} |
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floatCoords = Arrays.copyOf(floatCoords, size+grow); |
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} |
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} |
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/** |
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* {@inheritDoc} |
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* @since 1.6 |
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*/ |
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public final synchronized void moveTo(double x, double y) { |
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if (numTypes > 0 && pointTypes[numTypes - 1] == SEG_MOVETO) { |
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floatCoords[numCoords-2] = (float) x; |
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floatCoords[numCoords-1] = (float) y; |
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} else { |
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needRoom(false, 2); |
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pointTypes[numTypes++] = SEG_MOVETO; |
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floatCoords[numCoords++] = (float) x; |
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floatCoords[numCoords++] = (float) y; |
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} |
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} |
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/** |
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* Adds a point to the path by moving to the specified |
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* coordinates specified in float precision. |
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* <p> |
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* This method provides a single precision variant of |
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* the double precision {@code moveTo()} method on the |
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* base {@code Path2D} class. |
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* |
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* @param x the specified X coordinate |
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* @param y the specified Y coordinate |
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* @see Path2D#moveTo |
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* @since 1.6 |
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*/ |
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public final synchronized void moveTo(float x, float y) { |
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if (numTypes > 0 && pointTypes[numTypes - 1] == SEG_MOVETO) { |
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floatCoords[numCoords-2] = x; |
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floatCoords[numCoords-1] = y; |
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} else { |
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needRoom(false, 2); |
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pointTypes[numTypes++] = SEG_MOVETO; |
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floatCoords[numCoords++] = x; |
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floatCoords[numCoords++] = y; |
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} |
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} |
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/** |
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* {@inheritDoc} |
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* @since 1.6 |
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*/ |
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public final synchronized void lineTo(double x, double y) { |
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needRoom(true, 2); |
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pointTypes[numTypes++] = SEG_LINETO; |
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floatCoords[numCoords++] = (float) x; |
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floatCoords[numCoords++] = (float) y; |
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} |
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/** |
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* Adds a point to the path by drawing a straight line from the |
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* current coordinates to the new specified coordinates |
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* specified in float precision. |
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* <p> |
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361 |
* This method provides a single precision variant of |
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* the double precision {@code lineTo()} method on the |
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* base {@code Path2D} class. |
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* |
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* @param x the specified X coordinate |
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* @param y the specified Y coordinate |
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* @see Path2D#lineTo |
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* @since 1.6 |
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*/ |
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public final synchronized void lineTo(float x, float y) { |
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needRoom(true, 2); |
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pointTypes[numTypes++] = SEG_LINETO; |
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floatCoords[numCoords++] = x; |
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floatCoords[numCoords++] = y; |
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} |
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377 |
/** |
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378 |
* {@inheritDoc} |
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379 |
* @since 1.6 |
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380 |
*/ |
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381 |
public final synchronized void quadTo(double x1, double y1, |
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double x2, double y2) |
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{ |
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needRoom(true, 4); |
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pointTypes[numTypes++] = SEG_QUADTO; |
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floatCoords[numCoords++] = (float) x1; |
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floatCoords[numCoords++] = (float) y1; |
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388 |
floatCoords[numCoords++] = (float) x2; |
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floatCoords[numCoords++] = (float) y2; |
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} |
|
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392 |
/** |
|
393 |
* Adds a curved segment, defined by two new points, to the path by |
|
394 |
* drawing a Quadratic curve that intersects both the current |
|
395 |
* coordinates and the specified coordinates {@code (x2,y2)}, |
|
396 |
* using the specified point {@code (x1,y1)} as a quadratic |
|
397 |
* parametric control point. |
|
398 |
* All coordinates are specified in float precision. |
|
399 |
* <p> |
|
400 |
* This method provides a single precision variant of |
|
401 |
* the double precision {@code quadTo()} method on the |
|
402 |
* base {@code Path2D} class. |
|
403 |
* |
|
404 |
* @param x1 the X coordinate of the quadratic control point |
|
405 |
* @param y1 the Y coordinate of the quadratic control point |
|
406 |
* @param x2 the X coordinate of the final end point |
|
407 |
* @param y2 the Y coordinate of the final end point |
|
408 |
* @see Path2D#quadTo |
|
409 |
* @since 1.6 |
|
410 |
*/ |
|
411 |
public final synchronized void quadTo(float x1, float y1, |
|
412 |
float x2, float y2) |
|
413 |
{ |
|
414 |
needRoom(true, 4); |
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415 |
pointTypes[numTypes++] = SEG_QUADTO; |
|
416 |
floatCoords[numCoords++] = x1; |
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417 |
floatCoords[numCoords++] = y1; |
|
418 |
floatCoords[numCoords++] = x2; |
|
419 |
floatCoords[numCoords++] = y2; |
|
420 |
} |
|
421 |
||
422 |
/** |
|
423 |
* {@inheritDoc} |
|
424 |
* @since 1.6 |
|
425 |
*/ |
|
426 |
public final synchronized void curveTo(double x1, double y1, |
|
427 |
double x2, double y2, |
|
428 |
double x3, double y3) |
|
429 |
{ |
|
430 |
needRoom(true, 6); |
|
431 |
pointTypes[numTypes++] = SEG_CUBICTO; |
|
432 |
floatCoords[numCoords++] = (float) x1; |
|
433 |
floatCoords[numCoords++] = (float) y1; |
|
434 |
floatCoords[numCoords++] = (float) x2; |
|
435 |
floatCoords[numCoords++] = (float) y2; |
|
436 |
floatCoords[numCoords++] = (float) x3; |
|
437 |
floatCoords[numCoords++] = (float) y3; |
|
438 |
} |
|
439 |
||
440 |
/** |
|
441 |
* Adds a curved segment, defined by three new points, to the path by |
|
442 |
* drawing a Bézier curve that intersects both the current |
|
443 |
* coordinates and the specified coordinates {@code (x3,y3)}, |
|
444 |
* using the specified points {@code (x1,y1)} and {@code (x2,y2)} as |
|
445 |
* Bézier control points. |
|
446 |
* All coordinates are specified in float precision. |
|
447 |
* <p> |
|
448 |
* This method provides a single precision variant of |
|
449 |
* the double precision {@code curveTo()} method on the |
|
450 |
* base {@code Path2D} class. |
|
451 |
* |
|
452 |
* @param x1 the X coordinate of the first Bézier control point |
|
453 |
* @param y1 the Y coordinate of the first Bézier control point |
|
454 |
* @param x2 the X coordinate of the second Bézier control point |
|
455 |
* @param y2 the Y coordinate of the second Bézier control point |
|
456 |
* @param x3 the X coordinate of the final end point |
|
457 |
* @param y3 the Y coordinate of the final end point |
|
458 |
* @see Path2D#curveTo |
|
459 |
* @since 1.6 |
|
460 |
*/ |
|
461 |
public final synchronized void curveTo(float x1, float y1, |
|
462 |
float x2, float y2, |
|
463 |
float x3, float y3) |
|
464 |
{ |
|
465 |
needRoom(true, 6); |
|
466 |
pointTypes[numTypes++] = SEG_CUBICTO; |
|
467 |
floatCoords[numCoords++] = x1; |
|
468 |
floatCoords[numCoords++] = y1; |
|
469 |
floatCoords[numCoords++] = x2; |
|
470 |
floatCoords[numCoords++] = y2; |
|
471 |
floatCoords[numCoords++] = x3; |
|
472 |
floatCoords[numCoords++] = y3; |
|
473 |
} |
|
474 |
||
475 |
int pointCrossings(double px, double py) { |
|
476 |
double movx, movy, curx, cury, endx, endy; |
|
477 |
float coords[] = floatCoords; |
|
478 |
curx = movx = coords[0]; |
|
479 |
cury = movy = coords[1]; |
|
480 |
int crossings = 0; |
|
481 |
int ci = 2; |
|
482 |
for (int i = 1; i < numTypes; i++) { |
|
483 |
switch (pointTypes[i]) { |
|
484 |
case PathIterator.SEG_MOVETO: |
|
485 |
if (cury != movy) { |
|
486 |
crossings += |
|
487 |
Curve.pointCrossingsForLine(px, py, |
|
488 |
curx, cury, |
|
489 |
movx, movy); |
|
490 |
} |
|
491 |
movx = curx = coords[ci++]; |
|
492 |
movy = cury = coords[ci++]; |
|
493 |
break; |
|
494 |
case PathIterator.SEG_LINETO: |
|
495 |
crossings += |
|
496 |
Curve.pointCrossingsForLine(px, py, |
|
497 |
curx, cury, |
|
498 |
endx = coords[ci++], |
|
499 |
endy = coords[ci++]); |
|
500 |
curx = endx; |
|
501 |
cury = endy; |
|
502 |
break; |
|
503 |
case PathIterator.SEG_QUADTO: |
|
504 |
crossings += |
|
505 |
Curve.pointCrossingsForQuad(px, py, |
|
506 |
curx, cury, |
|
507 |
coords[ci++], |
|
508 |
coords[ci++], |
|
509 |
endx = coords[ci++], |
|
510 |
endy = coords[ci++], |
|
511 |
0); |
|
512 |
curx = endx; |
|
513 |
cury = endy; |
|
514 |
break; |
|
515 |
case PathIterator.SEG_CUBICTO: |
|
516 |
crossings += |
|
517 |
Curve.pointCrossingsForCubic(px, py, |
|
518 |
curx, cury, |
|
519 |
coords[ci++], |
|
520 |
coords[ci++], |
|
521 |
coords[ci++], |
|
522 |
coords[ci++], |
|
523 |
endx = coords[ci++], |
|
524 |
endy = coords[ci++], |
|
525 |
0); |
|
526 |
curx = endx; |
|
527 |
cury = endy; |
|
528 |
break; |
|
529 |
case PathIterator.SEG_CLOSE: |
|
530 |
if (cury != movy) { |
|
531 |
crossings += |
|
532 |
Curve.pointCrossingsForLine(px, py, |
|
533 |
curx, cury, |
|
534 |
movx, movy); |
|
535 |
} |
|
536 |
curx = movx; |
|
537 |
cury = movy; |
|
538 |
break; |
|
539 |
} |
|
540 |
} |
|
541 |
if (cury != movy) { |
|
542 |
crossings += |
|
543 |
Curve.pointCrossingsForLine(px, py, |
|
544 |
curx, cury, |
|
545 |
movx, movy); |
|
546 |
} |
|
547 |
return crossings; |
|
548 |
} |
|
549 |
||
550 |
int rectCrossings(double rxmin, double rymin, |
|
551 |
double rxmax, double rymax) |
|
552 |
{ |
|
553 |
float coords[] = floatCoords; |
|
554 |
double curx, cury, movx, movy, endx, endy; |
|
555 |
curx = movx = coords[0]; |
|
556 |
cury = movy = coords[1]; |
|
557 |
int crossings = 0; |
|
558 |
int ci = 2; |
|
559 |
for (int i = 1; |
|
560 |
crossings != Curve.RECT_INTERSECTS && i < numTypes; |
|
561 |
i++) |
|
562 |
{ |
|
563 |
switch (pointTypes[i]) { |
|
564 |
case PathIterator.SEG_MOVETO: |
|
565 |
if (curx != movx || cury != movy) { |
|
566 |
crossings = |
|
567 |
Curve.rectCrossingsForLine(crossings, |
|
568 |
rxmin, rymin, |
|
569 |
rxmax, rymax, |
|
570 |
curx, cury, |
|
571 |
movx, movy); |
|
572 |
} |
|
573 |
// Count should always be a multiple of 2 here. |
|
574 |
// assert((crossings & 1) != 0); |
|
575 |
movx = curx = coords[ci++]; |
|
576 |
movy = cury = coords[ci++]; |
|
577 |
break; |
|
578 |
case PathIterator.SEG_LINETO: |
|
579 |
crossings = |
|
580 |
Curve.rectCrossingsForLine(crossings, |
|
581 |
rxmin, rymin, |
|
582 |
rxmax, rymax, |
|
583 |
curx, cury, |
|
584 |
endx = coords[ci++], |
|
585 |
endy = coords[ci++]); |
|
586 |
curx = endx; |
|
587 |
cury = endy; |
|
588 |
break; |
|
589 |
case PathIterator.SEG_QUADTO: |
|
590 |
crossings = |
|
591 |
Curve.rectCrossingsForQuad(crossings, |
|
592 |
rxmin, rymin, |
|
593 |
rxmax, rymax, |
|
594 |
curx, cury, |
|
595 |
coords[ci++], |
|
596 |
coords[ci++], |
|
597 |
endx = coords[ci++], |
|
598 |
endy = coords[ci++], |
|
599 |
0); |
|
600 |
curx = endx; |
|
601 |
cury = endy; |
|
602 |
break; |
|
603 |
case PathIterator.SEG_CUBICTO: |
|
604 |
crossings = |
|
605 |
Curve.rectCrossingsForCubic(crossings, |
|
606 |
rxmin, rymin, |
|
607 |
rxmax, rymax, |
|
608 |
curx, cury, |
|
609 |
coords[ci++], |
|
610 |
coords[ci++], |
|
611 |
coords[ci++], |
|
612 |
coords[ci++], |
|
613 |
endx = coords[ci++], |
|
614 |
endy = coords[ci++], |
|
615 |
0); |
|
616 |
curx = endx; |
|
617 |
cury = endy; |
|
618 |
break; |
|
619 |
case PathIterator.SEG_CLOSE: |
|
620 |
if (curx != movx || cury != movy) { |
|
621 |
crossings = |
|
622 |
Curve.rectCrossingsForLine(crossings, |
|
623 |
rxmin, rymin, |
|
624 |
rxmax, rymax, |
|
625 |
curx, cury, |
|
626 |
movx, movy); |
|
627 |
} |
|
628 |
curx = movx; |
|
629 |
cury = movy; |
|
630 |
// Count should always be a multiple of 2 here. |
|
631 |
// assert((crossings & 1) != 0); |
|
632 |
break; |
|
633 |
} |
|
634 |
} |
|
635 |
if (crossings != Curve.RECT_INTERSECTS && |
|
636 |
(curx != movx || cury != movy)) |
|
637 |
{ |
|
638 |
crossings = |
|
639 |
Curve.rectCrossingsForLine(crossings, |
|
640 |
rxmin, rymin, |
|
641 |
rxmax, rymax, |
|
642 |
curx, cury, |
|
643 |
movx, movy); |
|
644 |
} |
|
645 |
// Count should always be a multiple of 2 here. |
|
646 |
// assert((crossings & 1) != 0); |
|
647 |
return crossings; |
|
648 |
} |
|
649 |
||
650 |
/** |
|
651 |
* {@inheritDoc} |
|
652 |
* @since 1.6 |
|
653 |
*/ |
|
654 |
public final void append(PathIterator pi, boolean connect) { |
|
655 |
float coords[] = new float[6]; |
|
656 |
while (!pi.isDone()) { |
|
657 |
switch (pi.currentSegment(coords)) { |
|
658 |
case SEG_MOVETO: |
|
659 |
if (!connect || numTypes < 1 || numCoords < 1) { |
|
660 |
moveTo(coords[0], coords[1]); |
|
661 |
break; |
|
662 |
} |
|
663 |
if (pointTypes[numTypes - 1] != SEG_CLOSE && |
|
664 |
floatCoords[numCoords-2] == coords[0] && |
|
665 |
floatCoords[numCoords-1] == coords[1]) |
|
666 |
{ |
|
667 |
// Collapse out initial moveto/lineto |
|
668 |
break; |
|
669 |
} |
|
11080
7e18e343964e
7117914: Fix javac warnings in src/share/classes/sun/java2d
neugens
parents:
9469
diff
changeset
|
670 |
lineTo(coords[0], coords[1]); |
7e18e343964e
7117914: Fix javac warnings in src/share/classes/sun/java2d
neugens
parents:
9469
diff
changeset
|
671 |
break; |
2 | 672 |
case SEG_LINETO: |
673 |
lineTo(coords[0], coords[1]); |
|
674 |
break; |
|
675 |
case SEG_QUADTO: |
|
676 |
quadTo(coords[0], coords[1], |
|
677 |
coords[2], coords[3]); |
|
678 |
break; |
|
679 |
case SEG_CUBICTO: |
|
680 |
curveTo(coords[0], coords[1], |
|
681 |
coords[2], coords[3], |
|
682 |
coords[4], coords[5]); |
|
683 |
break; |
|
684 |
case SEG_CLOSE: |
|
685 |
closePath(); |
|
686 |
break; |
|
687 |
} |
|
688 |
pi.next(); |
|
689 |
connect = false; |
|
690 |
} |
|
691 |
} |
|
692 |
||
693 |
/** |
|
694 |
* {@inheritDoc} |
|
695 |
* @since 1.6 |
|
696 |
*/ |
|
697 |
public final void transform(AffineTransform at) { |
|
698 |
at.transform(floatCoords, 0, floatCoords, 0, numCoords / 2); |
|
699 |
} |
|
700 |
||
701 |
/** |
|
702 |
* {@inheritDoc} |
|
703 |
* @since 1.6 |
|
704 |
*/ |
|
705 |
public final synchronized Rectangle2D getBounds2D() { |
|
706 |
float x1, y1, x2, y2; |
|
707 |
int i = numCoords; |
|
708 |
if (i > 0) { |
|
709 |
y1 = y2 = floatCoords[--i]; |
|
710 |
x1 = x2 = floatCoords[--i]; |
|
711 |
while (i > 0) { |
|
712 |
float y = floatCoords[--i]; |
|
713 |
float x = floatCoords[--i]; |
|
714 |
if (x < x1) x1 = x; |
|
715 |
if (y < y1) y1 = y; |
|
716 |
if (x > x2) x2 = x; |
|
717 |
if (y > y2) y2 = y; |
|
718 |
} |
|
719 |
} else { |
|
720 |
x1 = y1 = x2 = y2 = 0.0f; |
|
721 |
} |
|
722 |
return new Rectangle2D.Float(x1, y1, x2 - x1, y2 - y1); |
|
723 |
} |
|
724 |
||
725 |
/** |
|
726 |
* {@inheritDoc} |
|
727 |
* <p> |
|
728 |
* The iterator for this class is not multi-threaded safe, |
|
729 |
* which means that the {@code Path2D} class does not |
|
730 |
* guarantee that modifications to the geometry of this |
|
731 |
* {@code Path2D} object do not affect any iterations of |
|
732 |
* that geometry that are already in process. |
|
733 |
* |
|
734 |
* @since 1.6 |
|
735 |
*/ |
|
9469
b8ea6866765a
6563734: Path2D.Float and Path2D.Double should have final getPathIterator methods
flar
parents:
5506
diff
changeset
|
736 |
public final PathIterator getPathIterator(AffineTransform at) { |
2 | 737 |
if (at == null) { |
738 |
return new CopyIterator(this); |
|
739 |
} else { |
|
740 |
return new TxIterator(this, at); |
|
741 |
} |
|
742 |
} |
|
743 |
||
744 |
/** |
|
745 |
* Creates a new object of the same class as this object. |
|
746 |
* |
|
747 |
* @return a clone of this instance. |
|
748 |
* @exception OutOfMemoryError if there is not enough memory. |
|
749 |
* @see java.lang.Cloneable |
|
750 |
* @since 1.6 |
|
751 |
*/ |
|
752 |
public final Object clone() { |
|
753 |
// Note: It would be nice to have this return Path2D |
|
754 |
// but one of our subclasses (GeneralPath) needs to |
|
755 |
// offer "public Object clone()" for backwards |
|
756 |
// compatibility so we cannot restrict it further. |
|
757 |
// REMIND: Can we do both somehow? |
|
758 |
if (this instanceof GeneralPath) { |
|
759 |
return new GeneralPath(this); |
|
760 |
} else { |
|
761 |
return new Path2D.Float(this); |
|
762 |
} |
|
763 |
} |
|
764 |
||
765 |
/* |
|
766 |
* JDK 1.6 serialVersionUID |
|
767 |
*/ |
|
768 |
private static final long serialVersionUID = 6990832515060788886L; |
|
769 |
||
770 |
/** |
|
771 |
* Writes the default serializable fields to the |
|
772 |
* {@code ObjectOutputStream} followed by an explicit |
|
773 |
* serialization of the path segments stored in this |
|
774 |
* path. |
|
775 |
* |
|
776 |
* @serialData |
|
777 |
* <a name="Path2DSerialData"><!-- --></a> |
|
778 |
* <ol> |
|
779 |
* <li>The default serializable fields. |
|
780 |
* There are no default serializable fields as of 1.6. |
|
781 |
* <li>followed by |
|
782 |
* a byte indicating the storage type of the original object |
|
783 |
* as a hint (SERIAL_STORAGE_FLT_ARRAY) |
|
784 |
* <li>followed by |
|
785 |
* an integer indicating the number of path segments to follow (NP) |
|
786 |
* or -1 to indicate an unknown number of path segments follows |
|
787 |
* <li>followed by |
|
788 |
* an integer indicating the total number of coordinates to follow (NC) |
|
789 |
* or -1 to indicate an unknown number of coordinates follows |
|
790 |
* (NC should always be even since coordinates always appear in pairs |
|
791 |
* representing an x,y pair) |
|
792 |
* <li>followed by |
|
793 |
* a byte indicating the winding rule |
|
794 |
* ({@link #WIND_EVEN_ODD WIND_EVEN_ODD} or |
|
795 |
* {@link #WIND_NON_ZERO WIND_NON_ZERO}) |
|
796 |
* <li>followed by |
|
797 |
* NP (or unlimited if NP < 0) sets of values consisting of |
|
798 |
* a single byte indicating a path segment type |
|
799 |
* followed by one or more pairs of float or double |
|
800 |
* values representing the coordinates of the path segment |
|
801 |
* <li>followed by |
|
802 |
* a byte indicating the end of the path (SERIAL_PATH_END). |
|
803 |
* </ol> |
|
804 |
* <p> |
|
805 |
* The following byte value constants are used in the serialized form |
|
806 |
* of {@code Path2D} objects: |
|
807 |
* <table> |
|
808 |
* <tr> |
|
809 |
* <th>Constant Name</th> |
|
810 |
* <th>Byte Value</th> |
|
811 |
* <th>Followed by</th> |
|
812 |
* <th>Description</th> |
|
813 |
* </tr> |
|
814 |
* <tr> |
|
815 |
* <td>{@code SERIAL_STORAGE_FLT_ARRAY}</td> |
|
816 |
* <td>0x30</td> |
|
817 |
* <td></td> |
|
818 |
* <td>A hint that the original {@code Path2D} object stored |
|
819 |
* the coordinates in a Java array of floats.</td> |
|
820 |
* </tr> |
|
821 |
* <tr> |
|
822 |
* <td>{@code SERIAL_STORAGE_DBL_ARRAY}</td> |
|
823 |
* <td>0x31</td> |
|
824 |
* <td></td> |
|
825 |
* <td>A hint that the original {@code Path2D} object stored |
|
826 |
* the coordinates in a Java array of doubles.</td> |
|
827 |
* </tr> |
|
828 |
* <tr> |
|
829 |
* <td>{@code SERIAL_SEG_FLT_MOVETO}</td> |
|
830 |
* <td>0x40</td> |
|
831 |
* <td>2 floats</td> |
|
832 |
* <td>A {@link #moveTo moveTo} path segment follows.</td> |
|
833 |
* </tr> |
|
834 |
* <tr> |
|
835 |
* <td>{@code SERIAL_SEG_FLT_LINETO}</td> |
|
836 |
* <td>0x41</td> |
|
837 |
* <td>2 floats</td> |
|
838 |
* <td>A {@link #lineTo lineTo} path segment follows.</td> |
|
839 |
* </tr> |
|
840 |
* <tr> |
|
841 |
* <td>{@code SERIAL_SEG_FLT_QUADTO}</td> |
|
842 |
* <td>0x42</td> |
|
843 |
* <td>4 floats</td> |
|
844 |
* <td>A {@link #quadTo quadTo} path segment follows.</td> |
|
845 |
* </tr> |
|
846 |
* <tr> |
|
847 |
* <td>{@code SERIAL_SEG_FLT_CUBICTO}</td> |
|
848 |
* <td>0x43</td> |
|
849 |
* <td>6 floats</td> |
|
850 |
* <td>A {@link #curveTo curveTo} path segment follows.</td> |
|
851 |
* </tr> |
|
852 |
* <tr> |
|
853 |
* <td>{@code SERIAL_SEG_DBL_MOVETO}</td> |
|
854 |
* <td>0x50</td> |
|
855 |
* <td>2 doubles</td> |
|
856 |
* <td>A {@link #moveTo moveTo} path segment follows.</td> |
|
857 |
* </tr> |
|
858 |
* <tr> |
|
859 |
* <td>{@code SERIAL_SEG_DBL_LINETO}</td> |
|
860 |
* <td>0x51</td> |
|
861 |
* <td>2 doubles</td> |
|
862 |
* <td>A {@link #lineTo lineTo} path segment follows.</td> |
|
863 |
* </tr> |
|
864 |
* <tr> |
|
865 |
* <td>{@code SERIAL_SEG_DBL_QUADTO}</td> |
|
866 |
* <td>0x52</td> |
|
867 |
* <td>4 doubles</td> |
|
868 |
* <td>A {@link #curveTo curveTo} path segment follows.</td> |
|
869 |
* </tr> |
|
870 |
* <tr> |
|
871 |
* <td>{@code SERIAL_SEG_DBL_CUBICTO}</td> |
|
872 |
* <td>0x53</td> |
|
873 |
* <td>6 doubles</td> |
|
874 |
* <td>A {@link #curveTo curveTo} path segment follows.</td> |
|
875 |
* </tr> |
|
876 |
* <tr> |
|
877 |
* <td>{@code SERIAL_SEG_CLOSE}</td> |
|
878 |
* <td>0x60</td> |
|
879 |
* <td></td> |
|
880 |
* <td>A {@link #closePath closePath} path segment.</td> |
|
881 |
* </tr> |
|
882 |
* <tr> |
|
883 |
* <td>{@code SERIAL_PATH_END}</td> |
|
884 |
* <td>0x61</td> |
|
885 |
* <td></td> |
|
886 |
* <td>There are no more path segments following.</td> |
|
887 |
* </table> |
|
888 |
* |
|
889 |
* @since 1.6 |
|
890 |
*/ |
|
891 |
private void writeObject(java.io.ObjectOutputStream s) |
|
892 |
throws java.io.IOException |
|
893 |
{ |
|
894 |
super.writeObject(s, false); |
|
895 |
} |
|
896 |
||
897 |
/** |
|
898 |
* Reads the default serializable fields from the |
|
899 |
* {@code ObjectInputStream} followed by an explicit |
|
900 |
* serialization of the path segments stored in this |
|
901 |
* path. |
|
902 |
* <p> |
|
903 |
* There are no default serializable fields as of 1.6. |
|
904 |
* <p> |
|
905 |
* The serial data for this object is described in the |
|
906 |
* writeObject method. |
|
907 |
* |
|
908 |
* @since 1.6 |
|
909 |
*/ |
|
910 |
private void readObject(java.io.ObjectInputStream s) |
|
911 |
throws java.lang.ClassNotFoundException, java.io.IOException |
|
912 |
{ |
|
913 |
super.readObject(s, false); |
|
914 |
} |
|
915 |
||
916 |
static class CopyIterator extends Path2D.Iterator { |
|
917 |
float floatCoords[]; |
|
918 |
||
919 |
CopyIterator(Path2D.Float p2df) { |
|
920 |
super(p2df); |
|
921 |
this.floatCoords = p2df.floatCoords; |
|
922 |
} |
|
923 |
||
924 |
public int currentSegment(float[] coords) { |
|
925 |
int type = path.pointTypes[typeIdx]; |
|
926 |
int numCoords = curvecoords[type]; |
|
927 |
if (numCoords > 0) { |
|
928 |
System.arraycopy(floatCoords, pointIdx, |
|
929 |
coords, 0, numCoords); |
|
930 |
} |
|
931 |
return type; |
|
932 |
} |
|
933 |
||
934 |
public int currentSegment(double[] coords) { |
|
935 |
int type = path.pointTypes[typeIdx]; |
|
936 |
int numCoords = curvecoords[type]; |
|
937 |
if (numCoords > 0) { |
|
938 |
for (int i = 0; i < numCoords; i++) { |
|
939 |
coords[i] = floatCoords[pointIdx + i]; |
|
940 |
} |
|
941 |
} |
|
942 |
return type; |
|
943 |
} |
|
944 |
} |
|
945 |
||
946 |
static class TxIterator extends Path2D.Iterator { |
|
947 |
float floatCoords[]; |
|
948 |
AffineTransform affine; |
|
949 |
||
950 |
TxIterator(Path2D.Float p2df, AffineTransform at) { |
|
951 |
super(p2df); |
|
952 |
this.floatCoords = p2df.floatCoords; |
|
953 |
this.affine = at; |
|
954 |
} |
|
955 |
||
956 |
public int currentSegment(float[] coords) { |
|
957 |
int type = path.pointTypes[typeIdx]; |
|
958 |
int numCoords = curvecoords[type]; |
|
959 |
if (numCoords > 0) { |
|
960 |
affine.transform(floatCoords, pointIdx, |
|
961 |
coords, 0, numCoords / 2); |
|
962 |
} |
|
963 |
return type; |
|
964 |
} |
|
965 |
||
966 |
public int currentSegment(double[] coords) { |
|
967 |
int type = path.pointTypes[typeIdx]; |
|
968 |
int numCoords = curvecoords[type]; |
|
969 |
if (numCoords > 0) { |
|
970 |
affine.transform(floatCoords, pointIdx, |
|
971 |
coords, 0, numCoords / 2); |
|
972 |
} |
|
973 |
return type; |
|
974 |
} |
|
975 |
} |
|
976 |
||
977 |
} |
|
978 |
||
979 |
/** |
|
980 |
* The {@code Double} class defines a geometric path with |
|
981 |
* coordinates stored in double precision floating point. |
|
982 |
* |
|
983 |
* @since 1.6 |
|
984 |
*/ |
|
985 |
public static class Double extends Path2D implements Serializable { |
|
986 |
transient double doubleCoords[]; |
|
987 |
||
988 |
/** |
|
989 |
* Constructs a new empty double precision {@code Path2D} object |
|
990 |
* with a default winding rule of {@link #WIND_NON_ZERO}. |
|
991 |
* |
|
992 |
* @since 1.6 |
|
993 |
*/ |
|
994 |
public Double() { |
|
995 |
this(WIND_NON_ZERO, INIT_SIZE); |
|
996 |
} |
|
997 |
||
998 |
/** |
|
999 |
* Constructs a new empty double precision {@code Path2D} object |
|
1000 |
* with the specified winding rule to control operations that |
|
1001 |
* require the interior of the path to be defined. |
|
1002 |
* |
|
1003 |
* @param rule the winding rule |
|
1004 |
* @see #WIND_EVEN_ODD |
|
1005 |
* @see #WIND_NON_ZERO |
|
1006 |
* @since 1.6 |
|
1007 |
*/ |
|
1008 |
public Double(int rule) { |
|
1009 |
this(rule, INIT_SIZE); |
|
1010 |
} |
|
1011 |
||
1012 |
/** |
|
1013 |
* Constructs a new empty double precision {@code Path2D} object |
|
1014 |
* with the specified winding rule and the specified initial |
|
1015 |
* capacity to store path segments. |
|
1016 |
* This number is an initial guess as to how many path segments |
|
1017 |
* are in the path, but the storage is expanded as needed to store |
|
1018 |
* whatever path segments are added to this path. |
|
1019 |
* |
|
1020 |
* @param rule the winding rule |
|
1021 |
* @param initialCapacity the estimate for the number of path segments |
|
1022 |
* in the path |
|
1023 |
* @see #WIND_EVEN_ODD |
|
1024 |
* @see #WIND_NON_ZERO |
|
1025 |
* @since 1.6 |
|
1026 |
*/ |
|
1027 |
public Double(int rule, int initialCapacity) { |
|
1028 |
super(rule, initialCapacity); |
|
1029 |
doubleCoords = new double[initialCapacity * 2]; |
|
1030 |
} |
|
1031 |
||
1032 |
/** |
|
1033 |
* Constructs a new double precision {@code Path2D} object |
|
1034 |
* from an arbitrary {@link Shape} object. |
|
1035 |
* All of the initial geometry and the winding rule for this path are |
|
1036 |
* taken from the specified {@code Shape} object. |
|
1037 |
* |
|
1038 |
* @param s the specified {@code Shape} object |
|
1039 |
* @since 1.6 |
|
1040 |
*/ |
|
1041 |
public Double(Shape s) { |
|
1042 |
this(s, null); |
|
1043 |
} |
|
1044 |
||
1045 |
/** |
|
1046 |
* Constructs a new double precision {@code Path2D} object |
|
1047 |
* from an arbitrary {@link Shape} object, transformed by an |
|
1048 |
* {@link AffineTransform} object. |
|
1049 |
* All of the initial geometry and the winding rule for this path are |
|
1050 |
* taken from the specified {@code Shape} object and transformed |
|
1051 |
* by the specified {@code AffineTransform} object. |
|
1052 |
* |
|
1053 |
* @param s the specified {@code Shape} object |
|
1054 |
* @param at the specified {@code AffineTransform} object |
|
1055 |
* @since 1.6 |
|
1056 |
*/ |
|
1057 |
public Double(Shape s, AffineTransform at) { |
|
1058 |
if (s instanceof Path2D) { |
|
1059 |
Path2D p2d = (Path2D) s; |
|
1060 |
setWindingRule(p2d.windingRule); |
|
1061 |
this.numTypes = p2d.numTypes; |
|
1062 |
this.pointTypes = Arrays.copyOf(p2d.pointTypes, |
|
1063 |
p2d.pointTypes.length); |
|
1064 |
this.numCoords = p2d.numCoords; |
|
1065 |
this.doubleCoords = p2d.cloneCoordsDouble(at); |
|
1066 |
} else { |
|
1067 |
PathIterator pi = s.getPathIterator(at); |
|
1068 |
setWindingRule(pi.getWindingRule()); |
|
1069 |
this.pointTypes = new byte[INIT_SIZE]; |
|
1070 |
this.doubleCoords = new double[INIT_SIZE * 2]; |
|
1071 |
append(pi, false); |
|
1072 |
} |
|
1073 |
} |
|
1074 |
||
1075 |
float[] cloneCoordsFloat(AffineTransform at) { |
|
1076 |
float ret[] = new float[doubleCoords.length]; |
|
1077 |
if (at == null) { |
|
1078 |
for (int i = 0; i < numCoords; i++) { |
|
1079 |
ret[i] = (float) doubleCoords[i]; |
|
1080 |
} |
|
1081 |
} else { |
|
1082 |
at.transform(doubleCoords, 0, ret, 0, numCoords / 2); |
|
1083 |
} |
|
1084 |
return ret; |
|
1085 |
} |
|
1086 |
||
1087 |
double[] cloneCoordsDouble(AffineTransform at) { |
|
1088 |
double ret[]; |
|
1089 |
if (at == null) { |
|
1090 |
ret = Arrays.copyOf(this.doubleCoords, |
|
1091 |
this.doubleCoords.length); |
|
1092 |
} else { |
|
1093 |
ret = new double[doubleCoords.length]; |
|
1094 |
at.transform(doubleCoords, 0, ret, 0, numCoords / 2); |
|
1095 |
} |
|
1096 |
return ret; |
|
1097 |
} |
|
1098 |
||
1099 |
void append(float x, float y) { |
|
1100 |
doubleCoords[numCoords++] = x; |
|
1101 |
doubleCoords[numCoords++] = y; |
|
1102 |
} |
|
1103 |
||
1104 |
void append(double x, double y) { |
|
1105 |
doubleCoords[numCoords++] = x; |
|
1106 |
doubleCoords[numCoords++] = y; |
|
1107 |
} |
|
1108 |
||
1109 |
Point2D getPoint(int coordindex) { |
|
1110 |
return new Point2D.Double(doubleCoords[coordindex], |
|
1111 |
doubleCoords[coordindex+1]); |
|
1112 |
} |
|
1113 |
||
1114 |
void needRoom(boolean needMove, int newCoords) { |
|
1115 |
if (needMove && numTypes == 0) { |
|
1116 |
throw new IllegalPathStateException("missing initial moveto "+ |
|
1117 |
"in path definition"); |
|
1118 |
} |
|
1119 |
int size = pointTypes.length; |
|
1120 |
if (numTypes >= size) { |
|
1121 |
int grow = size; |
|
1122 |
if (grow > EXPAND_MAX) { |
|
1123 |
grow = EXPAND_MAX; |
|
1124 |
} |
|
1125 |
pointTypes = Arrays.copyOf(pointTypes, size+grow); |
|
1126 |
} |
|
1127 |
size = doubleCoords.length; |
|
1128 |
if (numCoords + newCoords > size) { |
|
1129 |
int grow = size; |
|
1130 |
if (grow > EXPAND_MAX * 2) { |
|
1131 |
grow = EXPAND_MAX * 2; |
|
1132 |
} |
|
1133 |
if (grow < newCoords) { |
|
1134 |
grow = newCoords; |
|
1135 |
} |
|
1136 |
doubleCoords = Arrays.copyOf(doubleCoords, size+grow); |
|
1137 |
} |
|
1138 |
} |
|
1139 |
||
1140 |
/** |
|
1141 |
* {@inheritDoc} |
|
1142 |
* @since 1.6 |
|
1143 |
*/ |
|
1144 |
public final synchronized void moveTo(double x, double y) { |
|
1145 |
if (numTypes > 0 && pointTypes[numTypes - 1] == SEG_MOVETO) { |
|
1146 |
doubleCoords[numCoords-2] = x; |
|
1147 |
doubleCoords[numCoords-1] = y; |
|
1148 |
} else { |
|
1149 |
needRoom(false, 2); |
|
1150 |
pointTypes[numTypes++] = SEG_MOVETO; |
|
1151 |
doubleCoords[numCoords++] = x; |
|
1152 |
doubleCoords[numCoords++] = y; |
|
1153 |
} |
|
1154 |
} |
|
1155 |
||
1156 |
/** |
|
1157 |
* {@inheritDoc} |
|
1158 |
* @since 1.6 |
|
1159 |
*/ |
|
1160 |
public final synchronized void lineTo(double x, double y) { |
|
1161 |
needRoom(true, 2); |
|
1162 |
pointTypes[numTypes++] = SEG_LINETO; |
|
1163 |
doubleCoords[numCoords++] = x; |
|
1164 |
doubleCoords[numCoords++] = y; |
|
1165 |
} |
|
1166 |
||
1167 |
/** |
|
1168 |
* {@inheritDoc} |
|
1169 |
* @since 1.6 |
|
1170 |
*/ |
|
1171 |
public final synchronized void quadTo(double x1, double y1, |
|
1172 |
double x2, double y2) |
|
1173 |
{ |
|
1174 |
needRoom(true, 4); |
|
1175 |
pointTypes[numTypes++] = SEG_QUADTO; |
|
1176 |
doubleCoords[numCoords++] = x1; |
|
1177 |
doubleCoords[numCoords++] = y1; |
|
1178 |
doubleCoords[numCoords++] = x2; |
|
1179 |
doubleCoords[numCoords++] = y2; |
|
1180 |
} |
|
1181 |
||
1182 |
/** |
|
1183 |
* {@inheritDoc} |
|
1184 |
* @since 1.6 |
|
1185 |
*/ |
|
1186 |
public final synchronized void curveTo(double x1, double y1, |
|
1187 |
double x2, double y2, |
|
1188 |
double x3, double y3) |
|
1189 |
{ |
|
1190 |
needRoom(true, 6); |
|
1191 |
pointTypes[numTypes++] = SEG_CUBICTO; |
|
1192 |
doubleCoords[numCoords++] = x1; |
|
1193 |
doubleCoords[numCoords++] = y1; |
|
1194 |
doubleCoords[numCoords++] = x2; |
|
1195 |
doubleCoords[numCoords++] = y2; |
|
1196 |
doubleCoords[numCoords++] = x3; |
|
1197 |
doubleCoords[numCoords++] = y3; |
|
1198 |
} |
|
1199 |
||
1200 |
int pointCrossings(double px, double py) { |
|
1201 |
double movx, movy, curx, cury, endx, endy; |
|
1202 |
double coords[] = doubleCoords; |
|
1203 |
curx = movx = coords[0]; |
|
1204 |
cury = movy = coords[1]; |
|
1205 |
int crossings = 0; |
|
1206 |
int ci = 2; |
|
1207 |
for (int i = 1; i < numTypes; i++) { |
|
1208 |
switch (pointTypes[i]) { |
|
1209 |
case PathIterator.SEG_MOVETO: |
|
1210 |
if (cury != movy) { |
|
1211 |
crossings += |
|
1212 |
Curve.pointCrossingsForLine(px, py, |
|
1213 |
curx, cury, |
|
1214 |
movx, movy); |
|
1215 |
} |
|
1216 |
movx = curx = coords[ci++]; |
|
1217 |
movy = cury = coords[ci++]; |
|
1218 |
break; |
|
1219 |
case PathIterator.SEG_LINETO: |
|
1220 |
crossings += |
|
1221 |
Curve.pointCrossingsForLine(px, py, |
|
1222 |
curx, cury, |
|
1223 |
endx = coords[ci++], |
|
1224 |
endy = coords[ci++]); |
|
1225 |
curx = endx; |
|
1226 |
cury = endy; |
|
1227 |
break; |
|
1228 |
case PathIterator.SEG_QUADTO: |
|
1229 |
crossings += |
|
1230 |
Curve.pointCrossingsForQuad(px, py, |
|
1231 |
curx, cury, |
|
1232 |
coords[ci++], |
|
1233 |
coords[ci++], |
|
1234 |
endx = coords[ci++], |
|
1235 |
endy = coords[ci++], |
|
1236 |
0); |
|
1237 |
curx = endx; |
|
1238 |
cury = endy; |
|
1239 |
break; |
|
1240 |
case PathIterator.SEG_CUBICTO: |
|
1241 |
crossings += |
|
1242 |
Curve.pointCrossingsForCubic(px, py, |
|
1243 |
curx, cury, |
|
1244 |
coords[ci++], |
|
1245 |
coords[ci++], |
|
1246 |
coords[ci++], |
|
1247 |
coords[ci++], |
|
1248 |
endx = coords[ci++], |
|
1249 |
endy = coords[ci++], |
|
1250 |
0); |
|
1251 |
curx = endx; |
|
1252 |
cury = endy; |
|
1253 |
break; |
|
1254 |
case PathIterator.SEG_CLOSE: |
|
1255 |
if (cury != movy) { |
|
1256 |
crossings += |
|
1257 |
Curve.pointCrossingsForLine(px, py, |
|
1258 |
curx, cury, |
|
1259 |
movx, movy); |
|
1260 |
} |
|
1261 |
curx = movx; |
|
1262 |
cury = movy; |
|
1263 |
break; |
|
1264 |
} |
|
1265 |
} |
|
1266 |
if (cury != movy) { |
|
1267 |
crossings += |
|
1268 |
Curve.pointCrossingsForLine(px, py, |
|
1269 |
curx, cury, |
|
1270 |
movx, movy); |
|
1271 |
} |
|
1272 |
return crossings; |
|
1273 |
} |
|
1274 |
||
1275 |
int rectCrossings(double rxmin, double rymin, |
|
1276 |
double rxmax, double rymax) |
|
1277 |
{ |
|
1278 |
double coords[] = doubleCoords; |
|
1279 |
double curx, cury, movx, movy, endx, endy; |
|
1280 |
curx = movx = coords[0]; |
|
1281 |
cury = movy = coords[1]; |
|
1282 |
int crossings = 0; |
|
1283 |
int ci = 2; |
|
1284 |
for (int i = 1; |
|
1285 |
crossings != Curve.RECT_INTERSECTS && i < numTypes; |
|
1286 |
i++) |
|
1287 |
{ |
|
1288 |
switch (pointTypes[i]) { |
|
1289 |
case PathIterator.SEG_MOVETO: |
|
1290 |
if (curx != movx || cury != movy) { |
|
1291 |
crossings = |
|
1292 |
Curve.rectCrossingsForLine(crossings, |
|
1293 |
rxmin, rymin, |
|
1294 |
rxmax, rymax, |
|
1295 |
curx, cury, |
|
1296 |
movx, movy); |
|
1297 |
} |
|
1298 |
// Count should always be a multiple of 2 here. |
|
1299 |
// assert((crossings & 1) != 0); |
|
1300 |
movx = curx = coords[ci++]; |
|
1301 |
movy = cury = coords[ci++]; |
|
1302 |
break; |
|
1303 |
case PathIterator.SEG_LINETO: |
|
1304 |
endx = coords[ci++]; |
|
1305 |
endy = coords[ci++]; |
|
1306 |
crossings = |
|
1307 |
Curve.rectCrossingsForLine(crossings, |
|
1308 |
rxmin, rymin, |
|
1309 |
rxmax, rymax, |
|
1310 |
curx, cury, |
|
1311 |
endx, endy); |
|
1312 |
curx = endx; |
|
1313 |
cury = endy; |
|
1314 |
break; |
|
1315 |
case PathIterator.SEG_QUADTO: |
|
1316 |
crossings = |
|
1317 |
Curve.rectCrossingsForQuad(crossings, |
|
1318 |
rxmin, rymin, |
|
1319 |
rxmax, rymax, |
|
1320 |
curx, cury, |
|
1321 |
coords[ci++], |
|
1322 |
coords[ci++], |
|
1323 |
endx = coords[ci++], |
|
1324 |
endy = coords[ci++], |
|
1325 |
0); |
|
1326 |
curx = endx; |
|
1327 |
cury = endy; |
|
1328 |
break; |
|
1329 |
case PathIterator.SEG_CUBICTO: |
|
1330 |
crossings = |
|
1331 |
Curve.rectCrossingsForCubic(crossings, |
|
1332 |
rxmin, rymin, |
|
1333 |
rxmax, rymax, |
|
1334 |
curx, cury, |
|
1335 |
coords[ci++], |
|
1336 |
coords[ci++], |
|
1337 |
coords[ci++], |
|
1338 |
coords[ci++], |
|
1339 |
endx = coords[ci++], |
|
1340 |
endy = coords[ci++], |
|
1341 |
0); |
|
1342 |
curx = endx; |
|
1343 |
cury = endy; |
|
1344 |
break; |
|
1345 |
case PathIterator.SEG_CLOSE: |
|
1346 |
if (curx != movx || cury != movy) { |
|
1347 |
crossings = |
|
1348 |
Curve.rectCrossingsForLine(crossings, |
|
1349 |
rxmin, rymin, |
|
1350 |
rxmax, rymax, |
|
1351 |
curx, cury, |
|
1352 |
movx, movy); |
|
1353 |
} |
|
1354 |
curx = movx; |
|
1355 |
cury = movy; |
|
1356 |
// Count should always be a multiple of 2 here. |
|
1357 |
// assert((crossings & 1) != 0); |
|
1358 |
break; |
|
1359 |
} |
|
1360 |
} |
|
1361 |
if (crossings != Curve.RECT_INTERSECTS && |
|
1362 |
(curx != movx || cury != movy)) |
|
1363 |
{ |
|
1364 |
crossings = |
|
1365 |
Curve.rectCrossingsForLine(crossings, |
|
1366 |
rxmin, rymin, |
|
1367 |
rxmax, rymax, |
|
1368 |
curx, cury, |
|
1369 |
movx, movy); |
|
1370 |
} |
|
1371 |
// Count should always be a multiple of 2 here. |
|
1372 |
// assert((crossings & 1) != 0); |
|
1373 |
return crossings; |
|
1374 |
} |
|
1375 |
||
1376 |
/** |
|
1377 |
* {@inheritDoc} |
|
1378 |
* @since 1.6 |
|
1379 |
*/ |
|
1380 |
public final void append(PathIterator pi, boolean connect) { |
|
1381 |
double coords[] = new double[6]; |
|
1382 |
while (!pi.isDone()) { |
|
1383 |
switch (pi.currentSegment(coords)) { |
|
1384 |
case SEG_MOVETO: |
|
1385 |
if (!connect || numTypes < 1 || numCoords < 1) { |
|
1386 |
moveTo(coords[0], coords[1]); |
|
1387 |
break; |
|
1388 |
} |
|
1389 |
if (pointTypes[numTypes - 1] != SEG_CLOSE && |
|
1390 |
doubleCoords[numCoords-2] == coords[0] && |
|
1391 |
doubleCoords[numCoords-1] == coords[1]) |
|
1392 |
{ |
|
1393 |
// Collapse out initial moveto/lineto |
|
1394 |
break; |
|
1395 |
} |
|
11080
7e18e343964e
7117914: Fix javac warnings in src/share/classes/sun/java2d
neugens
parents:
9469
diff
changeset
|
1396 |
lineTo(coords[0], coords[1]); |
7e18e343964e
7117914: Fix javac warnings in src/share/classes/sun/java2d
neugens
parents:
9469
diff
changeset
|
1397 |
break; |
2 | 1398 |
case SEG_LINETO: |
1399 |
lineTo(coords[0], coords[1]); |
|
1400 |
break; |
|
1401 |
case SEG_QUADTO: |
|
1402 |
quadTo(coords[0], coords[1], |
|
1403 |
coords[2], coords[3]); |
|
1404 |
break; |
|
1405 |
case SEG_CUBICTO: |
|
1406 |
curveTo(coords[0], coords[1], |
|
1407 |
coords[2], coords[3], |
|
1408 |
coords[4], coords[5]); |
|
1409 |
break; |
|
1410 |
case SEG_CLOSE: |
|
1411 |
closePath(); |
|
1412 |
break; |
|
1413 |
} |
|
1414 |
pi.next(); |
|
1415 |
connect = false; |
|
1416 |
} |
|
1417 |
} |
|
1418 |
||
1419 |
/** |
|
1420 |
* {@inheritDoc} |
|
1421 |
* @since 1.6 |
|
1422 |
*/ |
|
1423 |
public final void transform(AffineTransform at) { |
|
1424 |
at.transform(doubleCoords, 0, doubleCoords, 0, numCoords / 2); |
|
1425 |
} |
|
1426 |
||
1427 |
/** |
|
1428 |
* {@inheritDoc} |
|
1429 |
* @since 1.6 |
|
1430 |
*/ |
|
1431 |
public final synchronized Rectangle2D getBounds2D() { |
|
1432 |
double x1, y1, x2, y2; |
|
1433 |
int i = numCoords; |
|
1434 |
if (i > 0) { |
|
1435 |
y1 = y2 = doubleCoords[--i]; |
|
1436 |
x1 = x2 = doubleCoords[--i]; |
|
1437 |
while (i > 0) { |
|
1438 |
double y = doubleCoords[--i]; |
|
1439 |
double x = doubleCoords[--i]; |
|
1440 |
if (x < x1) x1 = x; |
|
1441 |
if (y < y1) y1 = y; |
|
1442 |
if (x > x2) x2 = x; |
|
1443 |
if (y > y2) y2 = y; |
|
1444 |
} |
|
1445 |
} else { |
|
1446 |
x1 = y1 = x2 = y2 = 0.0; |
|
1447 |
} |
|
1448 |
return new Rectangle2D.Double(x1, y1, x2 - x1, y2 - y1); |
|
1449 |
} |
|
1450 |
||
1451 |
/** |
|
1452 |
* {@inheritDoc} |
|
1453 |
* <p> |
|
1454 |
* The iterator for this class is not multi-threaded safe, |
|
1455 |
* which means that the {@code Path2D} class does not |
|
1456 |
* guarantee that modifications to the geometry of this |
|
1457 |
* {@code Path2D} object do not affect any iterations of |
|
1458 |
* that geometry that are already in process. |
|
1459 |
* |
|
1460 |
* @param at an {@code AffineTransform} |
|
1461 |
* @return a new {@code PathIterator} that iterates along the boundary |
|
1462 |
* of this {@code Shape} and provides access to the geometry |
|
1463 |
* of this {@code Shape}'s outline |
|
1464 |
* @since 1.6 |
|
1465 |
*/ |
|
9469
b8ea6866765a
6563734: Path2D.Float and Path2D.Double should have final getPathIterator methods
flar
parents:
5506
diff
changeset
|
1466 |
public final PathIterator getPathIterator(AffineTransform at) { |
2 | 1467 |
if (at == null) { |
1468 |
return new CopyIterator(this); |
|
1469 |
} else { |
|
1470 |
return new TxIterator(this, at); |
|
1471 |
} |
|
1472 |
} |
|
1473 |
||
1474 |
/** |
|
1475 |
* Creates a new object of the same class as this object. |
|
1476 |
* |
|
1477 |
* @return a clone of this instance. |
|
1478 |
* @exception OutOfMemoryError if there is not enough memory. |
|
1479 |
* @see java.lang.Cloneable |
|
1480 |
* @since 1.6 |
|
1481 |
*/ |
|
1482 |
public final Object clone() { |
|
1483 |
// Note: It would be nice to have this return Path2D |
|
1484 |
// but one of our subclasses (GeneralPath) needs to |
|
1485 |
// offer "public Object clone()" for backwards |
|
1486 |
// compatibility so we cannot restrict it further. |
|
1487 |
// REMIND: Can we do both somehow? |
|
1488 |
return new Path2D.Double(this); |
|
1489 |
} |
|
1490 |
||
1491 |
/* |
|
1492 |
* JDK 1.6 serialVersionUID |
|
1493 |
*/ |
|
1494 |
private static final long serialVersionUID = 1826762518450014216L; |
|
1495 |
||
1496 |
/** |
|
1497 |
* Writes the default serializable fields to the |
|
1498 |
* {@code ObjectOutputStream} followed by an explicit |
|
1499 |
* serialization of the path segments stored in this |
|
1500 |
* path. |
|
1501 |
* |
|
1502 |
* @serialData |
|
1503 |
* <a name="Path2DSerialData"><!-- --></a> |
|
1504 |
* <ol> |
|
1505 |
* <li>The default serializable fields. |
|
1506 |
* There are no default serializable fields as of 1.6. |
|
1507 |
* <li>followed by |
|
1508 |
* a byte indicating the storage type of the original object |
|
1509 |
* as a hint (SERIAL_STORAGE_DBL_ARRAY) |
|
1510 |
* <li>followed by |
|
1511 |
* an integer indicating the number of path segments to follow (NP) |
|
1512 |
* or -1 to indicate an unknown number of path segments follows |
|
1513 |
* <li>followed by |
|
1514 |
* an integer indicating the total number of coordinates to follow (NC) |
|
1515 |
* or -1 to indicate an unknown number of coordinates follows |
|
1516 |
* (NC should always be even since coordinates always appear in pairs |
|
1517 |
* representing an x,y pair) |
|
1518 |
* <li>followed by |
|
1519 |
* a byte indicating the winding rule |
|
1520 |
* ({@link #WIND_EVEN_ODD WIND_EVEN_ODD} or |
|
1521 |
* {@link #WIND_NON_ZERO WIND_NON_ZERO}) |
|
1522 |
* <li>followed by |
|
1523 |
* NP (or unlimited if NP < 0) sets of values consisting of |
|
1524 |
* a single byte indicating a path segment type |
|
1525 |
* followed by one or more pairs of float or double |
|
1526 |
* values representing the coordinates of the path segment |
|
1527 |
* <li>followed by |
|
1528 |
* a byte indicating the end of the path (SERIAL_PATH_END). |
|
1529 |
* </ol> |
|
1530 |
* <p> |
|
1531 |
* The following byte value constants are used in the serialized form |
|
1532 |
* of {@code Path2D} objects: |
|
1533 |
* <table> |
|
1534 |
* <tr> |
|
1535 |
* <th>Constant Name</th> |
|
1536 |
* <th>Byte Value</th> |
|
1537 |
* <th>Followed by</th> |
|
1538 |
* <th>Description</th> |
|
1539 |
* </tr> |
|
1540 |
* <tr> |
|
1541 |
* <td>{@code SERIAL_STORAGE_FLT_ARRAY}</td> |
|
1542 |
* <td>0x30</td> |
|
1543 |
* <td></td> |
|
1544 |
* <td>A hint that the original {@code Path2D} object stored |
|
1545 |
* the coordinates in a Java array of floats.</td> |
|
1546 |
* </tr> |
|
1547 |
* <tr> |
|
1548 |
* <td>{@code SERIAL_STORAGE_DBL_ARRAY}</td> |
|
1549 |
* <td>0x31</td> |
|
1550 |
* <td></td> |
|
1551 |
* <td>A hint that the original {@code Path2D} object stored |
|
1552 |
* the coordinates in a Java array of doubles.</td> |
|
1553 |
* </tr> |
|
1554 |
* <tr> |
|
1555 |
* <td>{@code SERIAL_SEG_FLT_MOVETO}</td> |
|
1556 |
* <td>0x40</td> |
|
1557 |
* <td>2 floats</td> |
|
1558 |
* <td>A {@link #moveTo moveTo} path segment follows.</td> |
|
1559 |
* </tr> |
|
1560 |
* <tr> |
|
1561 |
* <td>{@code SERIAL_SEG_FLT_LINETO}</td> |
|
1562 |
* <td>0x41</td> |
|
1563 |
* <td>2 floats</td> |
|
1564 |
* <td>A {@link #lineTo lineTo} path segment follows.</td> |
|
1565 |
* </tr> |
|
1566 |
* <tr> |
|
1567 |
* <td>{@code SERIAL_SEG_FLT_QUADTO}</td> |
|
1568 |
* <td>0x42</td> |
|
1569 |
* <td>4 floats</td> |
|
1570 |
* <td>A {@link #quadTo quadTo} path segment follows.</td> |
|
1571 |
* </tr> |
|
1572 |
* <tr> |
|
1573 |
* <td>{@code SERIAL_SEG_FLT_CUBICTO}</td> |
|
1574 |
* <td>0x43</td> |
|
1575 |
* <td>6 floats</td> |
|
1576 |
* <td>A {@link #curveTo curveTo} path segment follows.</td> |
|
1577 |
* </tr> |
|
1578 |
* <tr> |
|
1579 |
* <td>{@code SERIAL_SEG_DBL_MOVETO}</td> |
|
1580 |
* <td>0x50</td> |
|
1581 |
* <td>2 doubles</td> |
|
1582 |
* <td>A {@link #moveTo moveTo} path segment follows.</td> |
|
1583 |
* </tr> |
|
1584 |
* <tr> |
|
1585 |
* <td>{@code SERIAL_SEG_DBL_LINETO}</td> |
|
1586 |
* <td>0x51</td> |
|
1587 |
* <td>2 doubles</td> |
|
1588 |
* <td>A {@link #lineTo lineTo} path segment follows.</td> |
|
1589 |
* </tr> |
|
1590 |
* <tr> |
|
1591 |
* <td>{@code SERIAL_SEG_DBL_QUADTO}</td> |
|
1592 |
* <td>0x52</td> |
|
1593 |
* <td>4 doubles</td> |
|
1594 |
* <td>A {@link #curveTo curveTo} path segment follows.</td> |
|
1595 |
* </tr> |
|
1596 |
* <tr> |
|
1597 |
* <td>{@code SERIAL_SEG_DBL_CUBICTO}</td> |
|
1598 |
* <td>0x53</td> |
|
1599 |
* <td>6 doubles</td> |
|
1600 |
* <td>A {@link #curveTo curveTo} path segment follows.</td> |
|
1601 |
* </tr> |
|
1602 |
* <tr> |
|
1603 |
* <td>{@code SERIAL_SEG_CLOSE}</td> |
|
1604 |
* <td>0x60</td> |
|
1605 |
* <td></td> |
|
1606 |
* <td>A {@link #closePath closePath} path segment.</td> |
|
1607 |
* </tr> |
|
1608 |
* <tr> |
|
1609 |
* <td>{@code SERIAL_PATH_END}</td> |
|
1610 |
* <td>0x61</td> |
|
1611 |
* <td></td> |
|
1612 |
* <td>There are no more path segments following.</td> |
|
1613 |
* </table> |
|
1614 |
* |
|
1615 |
* @since 1.6 |
|
1616 |
*/ |
|
1617 |
private void writeObject(java.io.ObjectOutputStream s) |
|
1618 |
throws java.io.IOException |
|
1619 |
{ |
|
1620 |
super.writeObject(s, true); |
|
1621 |
} |
|
1622 |
||
1623 |
/** |
|
1624 |
* Reads the default serializable fields from the |
|
1625 |
* {@code ObjectInputStream} followed by an explicit |
|
1626 |
* serialization of the path segments stored in this |
|
1627 |
* path. |
|
1628 |
* <p> |
|
1629 |
* There are no default serializable fields as of 1.6. |
|
1630 |
* <p> |
|
1631 |
* The serial data for this object is described in the |
|
1632 |
* writeObject method. |
|
1633 |
* |
|
1634 |
* @since 1.6 |
|
1635 |
*/ |
|
1636 |
private void readObject(java.io.ObjectInputStream s) |
|
1637 |
throws java.lang.ClassNotFoundException, java.io.IOException |
|
1638 |
{ |
|
1639 |
super.readObject(s, true); |
|
1640 |
} |
|
1641 |
||
1642 |
static class CopyIterator extends Path2D.Iterator { |
|
1643 |
double doubleCoords[]; |
|
1644 |
||
1645 |
CopyIterator(Path2D.Double p2dd) { |
|
1646 |
super(p2dd); |
|
1647 |
this.doubleCoords = p2dd.doubleCoords; |
|
1648 |
} |
|
1649 |
||
1650 |
public int currentSegment(float[] coords) { |
|
1651 |
int type = path.pointTypes[typeIdx]; |
|
1652 |
int numCoords = curvecoords[type]; |
|
1653 |
if (numCoords > 0) { |
|
1654 |
for (int i = 0; i < numCoords; i++) { |
|
1655 |
coords[i] = (float) doubleCoords[pointIdx + i]; |
|
1656 |
} |
|
1657 |
} |
|
1658 |
return type; |
|
1659 |
} |
|
1660 |
||
1661 |
public int currentSegment(double[] coords) { |
|
1662 |
int type = path.pointTypes[typeIdx]; |
|
1663 |
int numCoords = curvecoords[type]; |
|
1664 |
if (numCoords > 0) { |
|
1665 |
System.arraycopy(doubleCoords, pointIdx, |
|
1666 |
coords, 0, numCoords); |
|
1667 |
} |
|
1668 |
return type; |
|
1669 |
} |
|
1670 |
} |
|
1671 |
||
1672 |
static class TxIterator extends Path2D.Iterator { |
|
1673 |
double doubleCoords[]; |
|
1674 |
AffineTransform affine; |
|
1675 |
||
1676 |
TxIterator(Path2D.Double p2dd, AffineTransform at) { |
|
1677 |
super(p2dd); |
|
1678 |
this.doubleCoords = p2dd.doubleCoords; |
|
1679 |
this.affine = at; |
|
1680 |
} |
|
1681 |
||
1682 |
public int currentSegment(float[] coords) { |
|
1683 |
int type = path.pointTypes[typeIdx]; |
|
1684 |
int numCoords = curvecoords[type]; |
|
1685 |
if (numCoords > 0) { |
|
1686 |
affine.transform(doubleCoords, pointIdx, |
|
1687 |
coords, 0, numCoords / 2); |
|
1688 |
} |
|
1689 |
return type; |
|
1690 |
} |
|
1691 |
||
1692 |
public int currentSegment(double[] coords) { |
|
1693 |
int type = path.pointTypes[typeIdx]; |
|
1694 |
int numCoords = curvecoords[type]; |
|
1695 |
if (numCoords > 0) { |
|
1696 |
affine.transform(doubleCoords, pointIdx, |
|
1697 |
coords, 0, numCoords / 2); |
|
1698 |
} |
|
1699 |
return type; |
|
1700 |
} |
|
1701 |
} |
|
1702 |
} |
|
1703 |
||
1704 |
/** |
|
1705 |
* Adds a point to the path by moving to the specified |
|
1706 |
* coordinates specified in double precision. |
|
1707 |
* |
|
1708 |
* @param x the specified X coordinate |
|
1709 |
* @param y the specified Y coordinate |
|
1710 |
* @since 1.6 |
|
1711 |
*/ |
|
1712 |
public abstract void moveTo(double x, double y); |
|
1713 |
||
1714 |
/** |
|
1715 |
* Adds a point to the path by drawing a straight line from the |
|
1716 |
* current coordinates to the new specified coordinates |
|
1717 |
* specified in double precision. |
|
1718 |
* |
|
1719 |
* @param x the specified X coordinate |
|
1720 |
* @param y the specified Y coordinate |
|
1721 |
* @since 1.6 |
|
1722 |
*/ |
|
1723 |
public abstract void lineTo(double x, double y); |
|
1724 |
||
1725 |
/** |
|
1726 |
* Adds a curved segment, defined by two new points, to the path by |
|
1727 |
* drawing a Quadratic curve that intersects both the current |
|
1728 |
* coordinates and the specified coordinates {@code (x2,y2)}, |
|
1729 |
* using the specified point {@code (x1,y1)} as a quadratic |
|
1730 |
* parametric control point. |
|
1731 |
* All coordinates are specified in double precision. |
|
1732 |
* |
|
1733 |
* @param x1 the X coordinate of the quadratic control point |
|
1734 |
* @param y1 the Y coordinate of the quadratic control point |
|
1735 |
* @param x2 the X coordinate of the final end point |
|
1736 |
* @param y2 the Y coordinate of the final end point |
|
1737 |
* @since 1.6 |
|
1738 |
*/ |
|
1739 |
public abstract void quadTo(double x1, double y1, |
|
1740 |
double x2, double y2); |
|
1741 |
||
1742 |
/** |
|
1743 |
* Adds a curved segment, defined by three new points, to the path by |
|
1744 |
* drawing a Bézier curve that intersects both the current |
|
1745 |
* coordinates and the specified coordinates {@code (x3,y3)}, |
|
1746 |
* using the specified points {@code (x1,y1)} and {@code (x2,y2)} as |
|
1747 |
* Bézier control points. |
|
1748 |
* All coordinates are specified in double precision. |
|
1749 |
* |
|
1750 |
* @param x1 the X coordinate of the first Bézier control point |
|
1751 |
* @param y1 the Y coordinate of the first Bézier control point |
|
1752 |
* @param x2 the X coordinate of the second Bézier control point |
|
1753 |
* @param y2 the Y coordinate of the second Bézier control point |
|
1754 |
* @param x3 the X coordinate of the final end point |
|
1755 |
* @param y3 the Y coordinate of the final end point |
|
1756 |
* @since 1.6 |
|
1757 |
*/ |
|
1758 |
public abstract void curveTo(double x1, double y1, |
|
1759 |
double x2, double y2, |
|
1760 |
double x3, double y3); |
|
1761 |
||
1762 |
/** |
|
1763 |
* Closes the current subpath by drawing a straight line back to |
|
1764 |
* the coordinates of the last {@code moveTo}. If the path is already |
|
1765 |
* closed then this method has no effect. |
|
1766 |
* |
|
1767 |
* @since 1.6 |
|
1768 |
*/ |
|
1769 |
public final synchronized void closePath() { |
|
1770 |
if (numTypes == 0 || pointTypes[numTypes - 1] != SEG_CLOSE) { |
|
1771 |
needRoom(true, 0); |
|
1772 |
pointTypes[numTypes++] = SEG_CLOSE; |
|
1773 |
} |
|
1774 |
} |
|
1775 |
||
1776 |
/** |
|
1777 |
* Appends the geometry of the specified {@code Shape} object to the |
|
1778 |
* path, possibly connecting the new geometry to the existing path |
|
1779 |
* segments with a line segment. |
|
1780 |
* If the {@code connect} parameter is {@code true} and the |
|
1781 |
* path is not empty then any initial {@code moveTo} in the |
|
1782 |
* geometry of the appended {@code Shape} |
|
1783 |
* is turned into a {@code lineTo} segment. |
|
1784 |
* If the destination coordinates of such a connecting {@code lineTo} |
|
1785 |
* segment match the ending coordinates of a currently open |
|
1786 |
* subpath then the segment is omitted as superfluous. |
|
1787 |
* The winding rule of the specified {@code Shape} is ignored |
|
1788 |
* and the appended geometry is governed by the winding |
|
1789 |
* rule specified for this path. |
|
1790 |
* |
|
1791 |
* @param s the {@code Shape} whose geometry is appended |
|
1792 |
* to this path |
|
1793 |
* @param connect a boolean to control whether or not to turn an initial |
|
1794 |
* {@code moveTo} segment into a {@code lineTo} segment |
|
1795 |
* to connect the new geometry to the existing path |
|
1796 |
* @since 1.6 |
|
1797 |
*/ |
|
1798 |
public final void append(Shape s, boolean connect) { |
|
1799 |
append(s.getPathIterator(null), connect); |
|
1800 |
} |
|
1801 |
||
1802 |
/** |
|
1803 |
* Appends the geometry of the specified |
|
1804 |
* {@link PathIterator} object |
|
1805 |
* to the path, possibly connecting the new geometry to the existing |
|
1806 |
* path segments with a line segment. |
|
1807 |
* If the {@code connect} parameter is {@code true} and the |
|
1808 |
* path is not empty then any initial {@code moveTo} in the |
|
1809 |
* geometry of the appended {@code Shape} is turned into a |
|
1810 |
* {@code lineTo} segment. |
|
1811 |
* If the destination coordinates of such a connecting {@code lineTo} |
|
1812 |
* segment match the ending coordinates of a currently open |
|
1813 |
* subpath then the segment is omitted as superfluous. |
|
1814 |
* The winding rule of the specified {@code Shape} is ignored |
|
1815 |
* and the appended geometry is governed by the winding |
|
1816 |
* rule specified for this path. |
|
1817 |
* |
|
1818 |
* @param pi the {@code PathIterator} whose geometry is appended to |
|
1819 |
* this path |
|
1820 |
* @param connect a boolean to control whether or not to turn an initial |
|
1821 |
* {@code moveTo} segment into a {@code lineTo} segment |
|
1822 |
* to connect the new geometry to the existing path |
|
1823 |
* @since 1.6 |
|
1824 |
*/ |
|
1825 |
public abstract void append(PathIterator pi, boolean connect); |
|
1826 |
||
1827 |
/** |
|
1828 |
* Returns the fill style winding rule. |
|
1829 |
* |
|
1830 |
* @return an integer representing the current winding rule. |
|
1831 |
* @see #WIND_EVEN_ODD |
|
1832 |
* @see #WIND_NON_ZERO |
|
1833 |
* @see #setWindingRule |
|
1834 |
* @since 1.6 |
|
1835 |
*/ |
|
1836 |
public final synchronized int getWindingRule() { |
|
1837 |
return windingRule; |
|
1838 |
} |
|
1839 |
||
1840 |
/** |
|
1841 |
* Sets the winding rule for this path to the specified value. |
|
1842 |
* |
|
1843 |
* @param rule an integer representing the specified |
|
1844 |
* winding rule |
|
1845 |
* @exception IllegalArgumentException if |
|
1846 |
* {@code rule} is not either |
|
1847 |
* {@link #WIND_EVEN_ODD} or |
|
1848 |
* {@link #WIND_NON_ZERO} |
|
1849 |
* @see #getWindingRule |
|
1850 |
* @since 1.6 |
|
1851 |
*/ |
|
1852 |
public final void setWindingRule(int rule) { |
|
1853 |
if (rule != WIND_EVEN_ODD && rule != WIND_NON_ZERO) { |
|
1854 |
throw new IllegalArgumentException("winding rule must be "+ |
|
1855 |
"WIND_EVEN_ODD or "+ |
|
1856 |
"WIND_NON_ZERO"); |
|
1857 |
} |
|
1858 |
windingRule = rule; |
|
1859 |
} |
|
1860 |
||
1861 |
/** |
|
1862 |
* Returns the coordinates most recently added to the end of the path |
|
1863 |
* as a {@link Point2D} object. |
|
1864 |
* |
|
1865 |
* @return a {@code Point2D} object containing the ending coordinates of |
|
1866 |
* the path or {@code null} if there are no points in the path. |
|
1867 |
* @since 1.6 |
|
1868 |
*/ |
|
1869 |
public final synchronized Point2D getCurrentPoint() { |
|
1870 |
int index = numCoords; |
|
1871 |
if (numTypes < 1 || index < 1) { |
|
1872 |
return null; |
|
1873 |
} |
|
1874 |
if (pointTypes[numTypes - 1] == SEG_CLOSE) { |
|
1875 |
loop: |
|
1876 |
for (int i = numTypes - 2; i > 0; i--) { |
|
1877 |
switch (pointTypes[i]) { |
|
1878 |
case SEG_MOVETO: |
|
1879 |
break loop; |
|
1880 |
case SEG_LINETO: |
|
1881 |
index -= 2; |
|
1882 |
break; |
|
1883 |
case SEG_QUADTO: |
|
1884 |
index -= 4; |
|
1885 |
break; |
|
1886 |
case SEG_CUBICTO: |
|
1887 |
index -= 6; |
|
1888 |
break; |
|
1889 |
case SEG_CLOSE: |
|
1890 |
break; |
|
1891 |
} |
|
1892 |
} |
|
1893 |
} |
|
1894 |
return getPoint(index - 2); |
|
1895 |
} |
|
1896 |
||
1897 |
/** |
|
1898 |
* Resets the path to empty. The append position is set back to the |
|
1899 |
* beginning of the path and all coordinates and point types are |
|
1900 |
* forgotten. |
|
1901 |
* |
|
1902 |
* @since 1.6 |
|
1903 |
*/ |
|
1904 |
public final synchronized void reset() { |
|
1905 |
numTypes = numCoords = 0; |
|
1906 |
} |
|
1907 |
||
1908 |
/** |
|
1909 |
* Transforms the geometry of this path using the specified |
|
1910 |
* {@link AffineTransform}. |
|
1911 |
* The geometry is transformed in place, which permanently changes the |
|
1912 |
* boundary defined by this object. |
|
1913 |
* |
|
1914 |
* @param at the {@code AffineTransform} used to transform the area |
|
1915 |
* @since 1.6 |
|
1916 |
*/ |
|
1917 |
public abstract void transform(AffineTransform at); |
|
1918 |
||
1919 |
/** |
|
1920 |
* Returns a new {@code Shape} representing a transformed version |
|
1921 |
* of this {@code Path2D}. |
|
1922 |
* Note that the exact type and coordinate precision of the return |
|
1923 |
* value is not specified for this method. |
|
1924 |
* The method will return a Shape that contains no less precision |
|
1925 |
* for the transformed geometry than this {@code Path2D} currently |
|
1926 |
* maintains, but it may contain no more precision either. |
|
1927 |
* If the tradeoff of precision vs. storage size in the result is |
|
1928 |
* important then the convenience constructors in the |
|
1929 |
* {@link Path2D.Float#Path2D.Float(Shape, AffineTransform) Path2D.Float} |
|
1930 |
* and |
|
1931 |
* {@link Path2D.Double#Path2D.Double(Shape, AffineTransform) Path2D.Double} |
|
1932 |
* subclasses should be used to make the choice explicit. |
|
1933 |
* |
|
1934 |
* @param at the {@code AffineTransform} used to transform a |
|
1935 |
* new {@code Shape}. |
|
1936 |
* @return a new {@code Shape}, transformed with the specified |
|
1937 |
* {@code AffineTransform}. |
|
1938 |
* @since 1.6 |
|
1939 |
*/ |
|
1940 |
public final synchronized Shape createTransformedShape(AffineTransform at) { |
|
1941 |
Path2D p2d = (Path2D) clone(); |
|
1942 |
if (at != null) { |
|
1943 |
p2d.transform(at); |
|
1944 |
} |
|
1945 |
return p2d; |
|
1946 |
} |
|
1947 |
||
1948 |
/** |
|
1949 |
* {@inheritDoc} |
|
1950 |
* @since 1.6 |
|
1951 |
*/ |
|
1952 |
public final Rectangle getBounds() { |
|
1953 |
return getBounds2D().getBounds(); |
|
1954 |
} |
|
1955 |
||
1956 |
/** |
|
1957 |
* Tests if the specified coordinates are inside the closed |
|
1958 |
* boundary of the specified {@link PathIterator}. |
|
1959 |
* <p> |
|
1960 |
* This method provides a basic facility for implementors of |
|
1961 |
* the {@link Shape} interface to implement support for the |
|
1962 |
* {@link Shape#contains(double, double)} method. |
|
1963 |
* |
|
1964 |
* @param pi the specified {@code PathIterator} |
|
1965 |
* @param x the specified X coordinate |
|
1966 |
* @param y the specified Y coordinate |
|
1967 |
* @return {@code true} if the specified coordinates are inside the |
|
1968 |
* specified {@code PathIterator}; {@code false} otherwise |
|
1969 |
* @since 1.6 |
|
1970 |
*/ |
|
1971 |
public static boolean contains(PathIterator pi, double x, double y) { |
|
1972 |
if (x * 0.0 + y * 0.0 == 0.0) { |
|
1973 |
/* N * 0.0 is 0.0 only if N is finite. |
|
1974 |
* Here we know that both x and y are finite. |
|
1975 |
*/ |
|
1976 |
int mask = (pi.getWindingRule() == WIND_NON_ZERO ? -1 : 1); |
|
1977 |
int cross = Curve.pointCrossingsForPath(pi, x, y); |
|
1978 |
return ((cross & mask) != 0); |
|
1979 |
} else { |
|
1980 |
/* Either x or y was infinite or NaN. |
|
1981 |
* A NaN always produces a negative response to any test |
|
1982 |
* and Infinity values cannot be "inside" any path so |
|
1983 |
* they should return false as well. |
|
1984 |
*/ |
|
1985 |
return false; |
|
1986 |
} |
|
1987 |
} |
|
1988 |
||
1989 |
/** |
|
1990 |
* Tests if the specified {@link Point2D} is inside the closed |
|
1991 |
* boundary of the specified {@link PathIterator}. |
|
1992 |
* <p> |
|
1993 |
* This method provides a basic facility for implementors of |
|
1994 |
* the {@link Shape} interface to implement support for the |
|
1995 |
* {@link Shape#contains(Point2D)} method. |
|
1996 |
* |
|
1997 |
* @param pi the specified {@code PathIterator} |
|
1998 |
* @param p the specified {@code Point2D} |
|
1999 |
* @return {@code true} if the specified coordinates are inside the |
|
2000 |
* specified {@code PathIterator}; {@code false} otherwise |
|
2001 |
* @since 1.6 |
|
2002 |
*/ |
|
2003 |
public static boolean contains(PathIterator pi, Point2D p) { |
|
2004 |
return contains(pi, p.getX(), p.getY()); |
|
2005 |
} |
|
2006 |
||
2007 |
/** |
|
2008 |
* {@inheritDoc} |
|
2009 |
* @since 1.6 |
|
2010 |
*/ |
|
2011 |
public final boolean contains(double x, double y) { |
|
2012 |
if (x * 0.0 + y * 0.0 == 0.0) { |
|
2013 |
/* N * 0.0 is 0.0 only if N is finite. |
|
2014 |
* Here we know that both x and y are finite. |
|
2015 |
*/ |
|
2016 |
if (numTypes < 2) { |
|
2017 |
return false; |
|
2018 |
} |
|
2019 |
int mask = (windingRule == WIND_NON_ZERO ? -1 : 1); |
|
2020 |
return ((pointCrossings(x, y) & mask) != 0); |
|
2021 |
} else { |
|
2022 |
/* Either x or y was infinite or NaN. |
|
2023 |
* A NaN always produces a negative response to any test |
|
2024 |
* and Infinity values cannot be "inside" any path so |
|
2025 |
* they should return false as well. |
|
2026 |
*/ |
|
2027 |
return false; |
|
2028 |
} |
|
2029 |
} |
|
2030 |
||
2031 |
/** |
|
2032 |
* {@inheritDoc} |
|
2033 |
* @since 1.6 |
|
2034 |
*/ |
|
2035 |
public final boolean contains(Point2D p) { |
|
2036 |
return contains(p.getX(), p.getY()); |
|
2037 |
} |
|
2038 |
||
2039 |
/** |
|
2040 |
* Tests if the specified rectangular area is entirely inside the |
|
2041 |
* closed boundary of the specified {@link PathIterator}. |
|
2042 |
* <p> |
|
2043 |
* This method provides a basic facility for implementors of |
|
2044 |
* the {@link Shape} interface to implement support for the |
|
2045 |
* {@link Shape#contains(double, double, double, double)} method. |
|
2046 |
* <p> |
|
2047 |
* This method object may conservatively return false in |
|
2048 |
* cases where the specified rectangular area intersects a |
|
2049 |
* segment of the path, but that segment does not represent a |
|
2050 |
* boundary between the interior and exterior of the path. |
|
2051 |
* Such segments could lie entirely within the interior of the |
|
2052 |
* path if they are part of a path with a {@link #WIND_NON_ZERO} |
|
2053 |
* winding rule or if the segments are retraced in the reverse |
|
2054 |
* direction such that the two sets of segments cancel each |
|
2055 |
* other out without any exterior area falling between them. |
|
2056 |
* To determine whether segments represent true boundaries of |
|
2057 |
* the interior of the path would require extensive calculations |
|
2058 |
* involving all of the segments of the path and the winding |
|
2059 |
* rule and are thus beyond the scope of this implementation. |
|
2060 |
* |
|
2061 |
* @param pi the specified {@code PathIterator} |
|
2062 |
* @param x the specified X coordinate |
|
2063 |
* @param y the specified Y coordinate |
|
2064 |
* @param w the width of the specified rectangular area |
|
2065 |
* @param h the height of the specified rectangular area |
|
2066 |
* @return {@code true} if the specified {@code PathIterator} contains |
|
2067 |
* the specified rectangluar area; {@code false} otherwise. |
|
2068 |
* @since 1.6 |
|
2069 |
*/ |
|
2070 |
public static boolean contains(PathIterator pi, |
|
2071 |
double x, double y, double w, double h) |
|
2072 |
{ |
|
2073 |
if (java.lang.Double.isNaN(x+w) || java.lang.Double.isNaN(y+h)) { |
|
2074 |
/* [xy]+[wh] is NaN if any of those values are NaN, |
|
2075 |
* or if adding the two together would produce NaN |
|
2076 |
* by virtue of adding opposing Infinte values. |
|
2077 |
* Since we need to add them below, their sum must |
|
2078 |
* not be NaN. |
|
2079 |
* We return false because NaN always produces a |
|
2080 |
* negative response to tests |
|
2081 |
*/ |
|
2082 |
return false; |
|
2083 |
} |
|
2084 |
if (w <= 0 || h <= 0) { |
|
2085 |
return false; |
|
2086 |
} |
|
2087 |
int mask = (pi.getWindingRule() == WIND_NON_ZERO ? -1 : 2); |
|
2088 |
int crossings = Curve.rectCrossingsForPath(pi, x, y, x+w, y+h); |
|
2089 |
return (crossings != Curve.RECT_INTERSECTS && |
|
2090 |
(crossings & mask) != 0); |
|
2091 |
} |
|
2092 |
||
2093 |
/** |
|
2094 |
* Tests if the specified {@link Rectangle2D} is entirely inside the |
|
2095 |
* closed boundary of the specified {@link PathIterator}. |
|
2096 |
* <p> |
|
2097 |
* This method provides a basic facility for implementors of |
|
2098 |
* the {@link Shape} interface to implement support for the |
|
2099 |
* {@link Shape#contains(Rectangle2D)} method. |
|
2100 |
* <p> |
|
2101 |
* This method object may conservatively return false in |
|
2102 |
* cases where the specified rectangular area intersects a |
|
2103 |
* segment of the path, but that segment does not represent a |
|
2104 |
* boundary between the interior and exterior of the path. |
|
2105 |
* Such segments could lie entirely within the interior of the |
|
2106 |
* path if they are part of a path with a {@link #WIND_NON_ZERO} |
|
2107 |
* winding rule or if the segments are retraced in the reverse |
|
2108 |
* direction such that the two sets of segments cancel each |
|
2109 |
* other out without any exterior area falling between them. |
|
2110 |
* To determine whether segments represent true boundaries of |
|
2111 |
* the interior of the path would require extensive calculations |
|
2112 |
* involving all of the segments of the path and the winding |
|
2113 |
* rule and are thus beyond the scope of this implementation. |
|
2114 |
* |
|
2115 |
* @param pi the specified {@code PathIterator} |
|
2116 |
* @param r a specified {@code Rectangle2D} |
|
2117 |
* @return {@code true} if the specified {@code PathIterator} contains |
|
2118 |
* the specified {@code Rectangle2D}; {@code false} otherwise. |
|
2119 |
* @since 1.6 |
|
2120 |
*/ |
|
2121 |
public static boolean contains(PathIterator pi, Rectangle2D r) { |
|
2122 |
return contains(pi, r.getX(), r.getY(), r.getWidth(), r.getHeight()); |
|
2123 |
} |
|
2124 |
||
2125 |
/** |
|
2126 |
* {@inheritDoc} |
|
2127 |
* <p> |
|
2128 |
* This method object may conservatively return false in |
|
2129 |
* cases where the specified rectangular area intersects a |
|
2130 |
* segment of the path, but that segment does not represent a |
|
2131 |
* boundary between the interior and exterior of the path. |
|
2132 |
* Such segments could lie entirely within the interior of the |
|
2133 |
* path if they are part of a path with a {@link #WIND_NON_ZERO} |
|
2134 |
* winding rule or if the segments are retraced in the reverse |
|
2135 |
* direction such that the two sets of segments cancel each |
|
2136 |
* other out without any exterior area falling between them. |
|
2137 |
* To determine whether segments represent true boundaries of |
|
2138 |
* the interior of the path would require extensive calculations |
|
2139 |
* involving all of the segments of the path and the winding |
|
2140 |
* rule and are thus beyond the scope of this implementation. |
|
2141 |
* |
|
2142 |
* @since 1.6 |
|
2143 |
*/ |
|
2144 |
public final boolean contains(double x, double y, double w, double h) { |
|
2145 |
if (java.lang.Double.isNaN(x+w) || java.lang.Double.isNaN(y+h)) { |
|
2146 |
/* [xy]+[wh] is NaN if any of those values are NaN, |
|
2147 |
* or if adding the two together would produce NaN |
|
2148 |
* by virtue of adding opposing Infinte values. |
|
2149 |
* Since we need to add them below, their sum must |
|
2150 |
* not be NaN. |
|
2151 |
* We return false because NaN always produces a |
|
2152 |
* negative response to tests |
|
2153 |
*/ |
|
2154 |
return false; |
|
2155 |
} |
|
2156 |
if (w <= 0 || h <= 0) { |
|
2157 |
return false; |
|
2158 |
} |
|
2159 |
int mask = (windingRule == WIND_NON_ZERO ? -1 : 2); |
|
2160 |
int crossings = rectCrossings(x, y, x+w, y+h); |
|
2161 |
return (crossings != Curve.RECT_INTERSECTS && |
|
2162 |
(crossings & mask) != 0); |
|
2163 |
} |
|
2164 |
||
2165 |
/** |
|
2166 |
* {@inheritDoc} |
|
2167 |
* <p> |
|
2168 |
* This method object may conservatively return false in |
|
2169 |
* cases where the specified rectangular area intersects a |
|
2170 |
* segment of the path, but that segment does not represent a |
|
2171 |
* boundary between the interior and exterior of the path. |
|
2172 |
* Such segments could lie entirely within the interior of the |
|
2173 |
* path if they are part of a path with a {@link #WIND_NON_ZERO} |
|
2174 |
* winding rule or if the segments are retraced in the reverse |
|
2175 |
* direction such that the two sets of segments cancel each |
|
2176 |
* other out without any exterior area falling between them. |
|
2177 |
* To determine whether segments represent true boundaries of |
|
2178 |
* the interior of the path would require extensive calculations |
|
2179 |
* involving all of the segments of the path and the winding |
|
2180 |
* rule and are thus beyond the scope of this implementation. |
|
2181 |
* |
|
2182 |
* @since 1.6 |
|
2183 |
*/ |
|
2184 |
public final boolean contains(Rectangle2D r) { |
|
2185 |
return contains(r.getX(), r.getY(), r.getWidth(), r.getHeight()); |
|
2186 |
} |
|
2187 |
||
2188 |
/** |
|
2189 |
* Tests if the interior of the specified {@link PathIterator} |
|
2190 |
* intersects the interior of a specified set of rectangular |
|
2191 |
* coordinates. |
|
2192 |
* <p> |
|
2193 |
* This method provides a basic facility for implementors of |
|
2194 |
* the {@link Shape} interface to implement support for the |
|
2195 |
* {@link Shape#intersects(double, double, double, double)} method. |
|
2196 |
* <p> |
|
2197 |
* This method object may conservatively return true in |
|
2198 |
* cases where the specified rectangular area intersects a |
|
2199 |
* segment of the path, but that segment does not represent a |
|
2200 |
* boundary between the interior and exterior of the path. |
|
2201 |
* Such a case may occur if some set of segments of the |
|
2202 |
* path are retraced in the reverse direction such that the |
|
2203 |
* two sets of segments cancel each other out without any |
|
2204 |
* interior area between them. |
|
2205 |
* To determine whether segments represent true boundaries of |
|
2206 |
* the interior of the path would require extensive calculations |
|
2207 |
* involving all of the segments of the path and the winding |
|
2208 |
* rule and are thus beyond the scope of this implementation. |
|
2209 |
* |
|
2210 |
* @param pi the specified {@code PathIterator} |
|
2211 |
* @param x the specified X coordinate |
|
2212 |
* @param y the specified Y coordinate |
|
2213 |
* @param w the width of the specified rectangular coordinates |
|
2214 |
* @param h the height of the specified rectangular coordinates |
|
2215 |
* @return {@code true} if the specified {@code PathIterator} and |
|
2216 |
* the interior of the specified set of rectangular |
|
2217 |
* coordinates intersect each other; {@code false} otherwise. |
|
2218 |
* @since 1.6 |
|
2219 |
*/ |
|
2220 |
public static boolean intersects(PathIterator pi, |
|
2221 |
double x, double y, double w, double h) |
|
2222 |
{ |
|
2223 |
if (java.lang.Double.isNaN(x+w) || java.lang.Double.isNaN(y+h)) { |
|
2224 |
/* [xy]+[wh] is NaN if any of those values are NaN, |
|
2225 |
* or if adding the two together would produce NaN |
|
2226 |
* by virtue of adding opposing Infinte values. |
|
2227 |
* Since we need to add them below, their sum must |
|
2228 |
* not be NaN. |
|
2229 |
* We return false because NaN always produces a |
|
2230 |
* negative response to tests |
|
2231 |
*/ |
|
2232 |
return false; |
|
2233 |
} |
|
2234 |
if (w <= 0 || h <= 0) { |
|
2235 |
return false; |
|
2236 |
} |
|
2237 |
int mask = (pi.getWindingRule() == WIND_NON_ZERO ? -1 : 2); |
|
2238 |
int crossings = Curve.rectCrossingsForPath(pi, x, y, x+w, y+h); |
|
2239 |
return (crossings == Curve.RECT_INTERSECTS || |
|
2240 |
(crossings & mask) != 0); |
|
2241 |
} |
|
2242 |
||
2243 |
/** |
|
2244 |
* Tests if the interior of the specified {@link PathIterator} |
|
2245 |
* intersects the interior of a specified {@link Rectangle2D}. |
|
2246 |
* <p> |
|
2247 |
* This method provides a basic facility for implementors of |
|
2248 |
* the {@link Shape} interface to implement support for the |
|
2249 |
* {@link Shape#intersects(Rectangle2D)} method. |
|
2250 |
* <p> |
|
2251 |
* This method object may conservatively return true in |
|
2252 |
* cases where the specified rectangular area intersects a |
|
2253 |
* segment of the path, but that segment does not represent a |
|
2254 |
* boundary between the interior and exterior of the path. |
|
2255 |
* Such a case may occur if some set of segments of the |
|
2256 |
* path are retraced in the reverse direction such that the |
|
2257 |
* two sets of segments cancel each other out without any |
|
2258 |
* interior area between them. |
|
2259 |
* To determine whether segments represent true boundaries of |
|
2260 |
* the interior of the path would require extensive calculations |
|
2261 |
* involving all of the segments of the path and the winding |
|
2262 |
* rule and are thus beyond the scope of this implementation. |
|
2263 |
* |
|
2264 |
* @param pi the specified {@code PathIterator} |
|
2265 |
* @param r the specified {@code Rectangle2D} |
|
2266 |
* @return {@code true} if the specified {@code PathIterator} and |
|
2267 |
* the interior of the specified {@code Rectangle2D} |
|
2268 |
* intersect each other; {@code false} otherwise. |
|
2269 |
* @since 1.6 |
|
2270 |
*/ |
|
2271 |
public static boolean intersects(PathIterator pi, Rectangle2D r) { |
|
2272 |
return intersects(pi, r.getX(), r.getY(), r.getWidth(), r.getHeight()); |
|
2273 |
} |
|
2274 |
||
2275 |
/** |
|
2276 |
* {@inheritDoc} |
|
2277 |
* <p> |
|
2278 |
* This method object may conservatively return true in |
|
2279 |
* cases where the specified rectangular area intersects a |
|
2280 |
* segment of the path, but that segment does not represent a |
|
2281 |
* boundary between the interior and exterior of the path. |
|
2282 |
* Such a case may occur if some set of segments of the |
|
2283 |
* path are retraced in the reverse direction such that the |
|
2284 |
* two sets of segments cancel each other out without any |
|
2285 |
* interior area between them. |
|
2286 |
* To determine whether segments represent true boundaries of |
|
2287 |
* the interior of the path would require extensive calculations |
|
2288 |
* involving all of the segments of the path and the winding |
|
2289 |
* rule and are thus beyond the scope of this implementation. |
|
2290 |
* |
|
2291 |
* @since 1.6 |
|
2292 |
*/ |
|
2293 |
public final boolean intersects(double x, double y, double w, double h) { |
|
2294 |
if (java.lang.Double.isNaN(x+w) || java.lang.Double.isNaN(y+h)) { |
|
2295 |
/* [xy]+[wh] is NaN if any of those values are NaN, |
|
2296 |
* or if adding the two together would produce NaN |
|
2297 |
* by virtue of adding opposing Infinte values. |
|
2298 |
* Since we need to add them below, their sum must |
|
2299 |
* not be NaN. |
|
2300 |
* We return false because NaN always produces a |
|
2301 |
* negative response to tests |
|
2302 |
*/ |
|
2303 |
return false; |
|
2304 |
} |
|
2305 |
if (w <= 0 || h <= 0) { |
|
2306 |
return false; |
|
2307 |
} |
|
2308 |
int mask = (windingRule == WIND_NON_ZERO ? -1 : 2); |
|
2309 |
int crossings = rectCrossings(x, y, x+w, y+h); |
|
2310 |
return (crossings == Curve.RECT_INTERSECTS || |
|
2311 |
(crossings & mask) != 0); |
|
2312 |
} |
|
2313 |
||
2314 |
/** |
|
2315 |
* {@inheritDoc} |
|
2316 |
* <p> |
|
2317 |
* This method object may conservatively return true in |
|
2318 |
* cases where the specified rectangular area intersects a |
|
2319 |
* segment of the path, but that segment does not represent a |
|
2320 |
* boundary between the interior and exterior of the path. |
|
2321 |
* Such a case may occur if some set of segments of the |
|
2322 |
* path are retraced in the reverse direction such that the |
|
2323 |
* two sets of segments cancel each other out without any |
|
2324 |
* interior area between them. |
|
2325 |
* To determine whether segments represent true boundaries of |
|
2326 |
* the interior of the path would require extensive calculations |
|
2327 |
* involving all of the segments of the path and the winding |
|
2328 |
* rule and are thus beyond the scope of this implementation. |
|
2329 |
* |
|
2330 |
* @since 1.6 |
|
2331 |
*/ |
|
2332 |
public final boolean intersects(Rectangle2D r) { |
|
2333 |
return intersects(r.getX(), r.getY(), r.getWidth(), r.getHeight()); |
|
2334 |
} |
|
2335 |
||
2336 |
/** |
|
2337 |
* {@inheritDoc} |
|
2338 |
* <p> |
|
2339 |
* The iterator for this class is not multi-threaded safe, |
|
2340 |
* which means that this {@code Path2D} class does not |
|
2341 |
* guarantee that modifications to the geometry of this |
|
2342 |
* {@code Path2D} object do not affect any iterations of |
|
2343 |
* that geometry that are already in process. |
|
2344 |
* |
|
2345 |
* @since 1.6 |
|
2346 |
*/ |
|
9469
b8ea6866765a
6563734: Path2D.Float and Path2D.Double should have final getPathIterator methods
flar
parents:
5506
diff
changeset
|
2347 |
public final PathIterator getPathIterator(AffineTransform at, |
b8ea6866765a
6563734: Path2D.Float and Path2D.Double should have final getPathIterator methods
flar
parents:
5506
diff
changeset
|
2348 |
double flatness) |
2 | 2349 |
{ |
2350 |
return new FlatteningPathIterator(getPathIterator(at), flatness); |
|
2351 |
} |
|
2352 |
||
2353 |
/** |
|
2354 |
* Creates a new object of the same class as this object. |
|
2355 |
* |
|
2356 |
* @return a clone of this instance. |
|
2357 |
* @exception OutOfMemoryError if there is not enough memory. |
|
2358 |
* @see java.lang.Cloneable |
|
2359 |
* @since 1.6 |
|
2360 |
*/ |
|
2361 |
public abstract Object clone(); |
|
2362 |
// Note: It would be nice to have this return Path2D |
|
2363 |
// but one of our subclasses (GeneralPath) needs to |
|
2364 |
// offer "public Object clone()" for backwards |
|
2365 |
// compatibility so we cannot restrict it further. |
|
2366 |
// REMIND: Can we do both somehow? |
|
2367 |
||
2368 |
/* |
|
2369 |
* Support fields and methods for serializing the subclasses. |
|
2370 |
*/ |
|
2371 |
private static final byte SERIAL_STORAGE_FLT_ARRAY = 0x30; |
|
2372 |
private static final byte SERIAL_STORAGE_DBL_ARRAY = 0x31; |
|
2373 |
||
2374 |
private static final byte SERIAL_SEG_FLT_MOVETO = 0x40; |
|
2375 |
private static final byte SERIAL_SEG_FLT_LINETO = 0x41; |
|
2376 |
private static final byte SERIAL_SEG_FLT_QUADTO = 0x42; |
|
2377 |
private static final byte SERIAL_SEG_FLT_CUBICTO = 0x43; |
|
2378 |
||
2379 |
private static final byte SERIAL_SEG_DBL_MOVETO = 0x50; |
|
2380 |
private static final byte SERIAL_SEG_DBL_LINETO = 0x51; |
|
2381 |
private static final byte SERIAL_SEG_DBL_QUADTO = 0x52; |
|
2382 |
private static final byte SERIAL_SEG_DBL_CUBICTO = 0x53; |
|
2383 |
||
2384 |
private static final byte SERIAL_SEG_CLOSE = 0x60; |
|
2385 |
private static final byte SERIAL_PATH_END = 0x61; |
|
2386 |
||
2387 |
final void writeObject(java.io.ObjectOutputStream s, boolean isdbl) |
|
2388 |
throws java.io.IOException |
|
2389 |
{ |
|
2390 |
s.defaultWriteObject(); |
|
2391 |
||
2392 |
float fCoords[]; |
|
2393 |
double dCoords[]; |
|
2394 |
||
2395 |
if (isdbl) { |
|
2396 |
dCoords = ((Path2D.Double) this).doubleCoords; |
|
2397 |
fCoords = null; |
|
2398 |
} else { |
|
2399 |
fCoords = ((Path2D.Float) this).floatCoords; |
|
2400 |
dCoords = null; |
|
2401 |
} |
|
2402 |
||
2403 |
int numTypes = this.numTypes; |
|
2404 |
||
2405 |
s.writeByte(isdbl |
|
2406 |
? SERIAL_STORAGE_DBL_ARRAY |
|
2407 |
: SERIAL_STORAGE_FLT_ARRAY); |
|
2408 |
s.writeInt(numTypes); |
|
2409 |
s.writeInt(numCoords); |
|
2410 |
s.writeByte((byte) windingRule); |
|
2411 |
||
2412 |
int cindex = 0; |
|
2413 |
for (int i = 0; i < numTypes; i++) { |
|
2414 |
int npoints; |
|
2415 |
byte serialtype; |
|
2416 |
switch (pointTypes[i]) { |
|
2417 |
case SEG_MOVETO: |
|
2418 |
npoints = 1; |
|
2419 |
serialtype = (isdbl |
|
2420 |
? SERIAL_SEG_DBL_MOVETO |
|
2421 |
: SERIAL_SEG_FLT_MOVETO); |
|
2422 |
break; |
|
2423 |
case SEG_LINETO: |
|
2424 |
npoints = 1; |
|
2425 |
serialtype = (isdbl |
|
2426 |
? SERIAL_SEG_DBL_LINETO |
|
2427 |
: SERIAL_SEG_FLT_LINETO); |
|
2428 |
break; |
|
2429 |
case SEG_QUADTO: |
|
2430 |
npoints = 2; |
|
2431 |
serialtype = (isdbl |
|
2432 |
? SERIAL_SEG_DBL_QUADTO |
|
2433 |
: SERIAL_SEG_FLT_QUADTO); |
|
2434 |
break; |
|
2435 |
case SEG_CUBICTO: |
|
2436 |
npoints = 3; |
|
2437 |
serialtype = (isdbl |
|
2438 |
? SERIAL_SEG_DBL_CUBICTO |
|
2439 |
: SERIAL_SEG_FLT_CUBICTO); |
|
2440 |
break; |
|
2441 |
case SEG_CLOSE: |
|
2442 |
npoints = 0; |
|
2443 |
serialtype = SERIAL_SEG_CLOSE; |
|
2444 |
break; |
|
2445 |
||
2446 |
default: |
|
2447 |
// Should never happen |
|
2448 |
throw new InternalError("unrecognized path type"); |
|
2449 |
} |
|
2450 |
s.writeByte(serialtype); |
|
2451 |
while (--npoints >= 0) { |
|
2452 |
if (isdbl) { |
|
2453 |
s.writeDouble(dCoords[cindex++]); |
|
2454 |
s.writeDouble(dCoords[cindex++]); |
|
2455 |
} else { |
|
2456 |
s.writeFloat(fCoords[cindex++]); |
|
2457 |
s.writeFloat(fCoords[cindex++]); |
|
2458 |
} |
|
2459 |
} |
|
2460 |
} |
|
11080
7e18e343964e
7117914: Fix javac warnings in src/share/classes/sun/java2d
neugens
parents:
9469
diff
changeset
|
2461 |
s.writeByte(SERIAL_PATH_END); |
2 | 2462 |
} |
2463 |
||
2464 |
final void readObject(java.io.ObjectInputStream s, boolean storedbl) |
|
2465 |
throws java.lang.ClassNotFoundException, java.io.IOException |
|
2466 |
{ |
|
2467 |
s.defaultReadObject(); |
|
2468 |
||
2469 |
// The subclass calls this method with the storage type that |
|
2470 |
// they want us to use (storedbl) so we ignore the storage |
|
2471 |
// method hint from the stream. |
|
2472 |
s.readByte(); |
|
2473 |
int nT = s.readInt(); |
|
2474 |
int nC = s.readInt(); |
|
2475 |
try { |
|
2476 |
setWindingRule(s.readByte()); |
|
2477 |
} catch (IllegalArgumentException iae) { |
|
2478 |
throw new java.io.InvalidObjectException(iae.getMessage()); |
|
2479 |
} |
|
2480 |
||
2481 |
pointTypes = new byte[(nT < 0) ? INIT_SIZE : nT]; |
|
2482 |
if (nC < 0) { |
|
2483 |
nC = INIT_SIZE * 2; |
|
2484 |
} |
|
2485 |
if (storedbl) { |
|
2486 |
((Path2D.Double) this).doubleCoords = new double[nC]; |
|
2487 |
} else { |
|
2488 |
((Path2D.Float) this).floatCoords = new float[nC]; |
|
2489 |
} |
|
2490 |
||
2491 |
PATHDONE: |
|
2492 |
for (int i = 0; nT < 0 || i < nT; i++) { |
|
2493 |
boolean isdbl; |
|
2494 |
int npoints; |
|
2495 |
byte segtype; |
|
2496 |
||
2497 |
byte serialtype = s.readByte(); |
|
2498 |
switch (serialtype) { |
|
2499 |
case SERIAL_SEG_FLT_MOVETO: |
|
2500 |
isdbl = false; |
|
2501 |
npoints = 1; |
|
2502 |
segtype = SEG_MOVETO; |
|
2503 |
break; |
|
2504 |
case SERIAL_SEG_FLT_LINETO: |
|
2505 |
isdbl = false; |
|
2506 |
npoints = 1; |
|
2507 |
segtype = SEG_LINETO; |
|
2508 |
break; |
|
2509 |
case SERIAL_SEG_FLT_QUADTO: |
|
2510 |
isdbl = false; |
|
2511 |
npoints = 2; |
|
2512 |
segtype = SEG_QUADTO; |
|
2513 |
break; |
|
2514 |
case SERIAL_SEG_FLT_CUBICTO: |
|
2515 |
isdbl = false; |
|
2516 |
npoints = 3; |
|
2517 |
segtype = SEG_CUBICTO; |
|
2518 |
break; |
|
2519 |
||
2520 |
case SERIAL_SEG_DBL_MOVETO: |
|
2521 |
isdbl = true; |
|
2522 |
npoints = 1; |
|
2523 |
segtype = SEG_MOVETO; |
|
2524 |
break; |
|
2525 |
case SERIAL_SEG_DBL_LINETO: |
|
2526 |
isdbl = true; |
|
2527 |
npoints = 1; |
|
2528 |
segtype = SEG_LINETO; |
|
2529 |
break; |
|
2530 |
case SERIAL_SEG_DBL_QUADTO: |
|
2531 |
isdbl = true; |
|
2532 |
npoints = 2; |
|
2533 |
segtype = SEG_QUADTO; |
|
2534 |
break; |
|
2535 |
case SERIAL_SEG_DBL_CUBICTO: |
|
2536 |
isdbl = true; |
|
2537 |
npoints = 3; |
|
2538 |
segtype = SEG_CUBICTO; |
|
2539 |
break; |
|
2540 |
||
2541 |
case SERIAL_SEG_CLOSE: |
|
2542 |
isdbl = false; |
|
2543 |
npoints = 0; |
|
2544 |
segtype = SEG_CLOSE; |
|
2545 |
break; |
|
2546 |
||
2547 |
case SERIAL_PATH_END: |
|
2548 |
if (nT < 0) { |
|
2549 |
break PATHDONE; |
|
2550 |
} |
|
2551 |
throw new StreamCorruptedException("unexpected PATH_END"); |
|
2552 |
||
2553 |
default: |
|
2554 |
throw new StreamCorruptedException("unrecognized path type"); |
|
2555 |
} |
|
2556 |
needRoom(segtype != SEG_MOVETO, npoints * 2); |
|
2557 |
if (isdbl) { |
|
2558 |
while (--npoints >= 0) { |
|
2559 |
append(s.readDouble(), s.readDouble()); |
|
2560 |
} |
|
2561 |
} else { |
|
2562 |
while (--npoints >= 0) { |
|
2563 |
append(s.readFloat(), s.readFloat()); |
|
2564 |
} |
|
2565 |
} |
|
2566 |
pointTypes[numTypes++] = segtype; |
|
2567 |
} |
|
2568 |
if (nT >= 0 && s.readByte() != SERIAL_PATH_END) { |
|
2569 |
throw new StreamCorruptedException("missing PATH_END"); |
|
2570 |
} |
|
2571 |
} |
|
2572 |
||
2573 |
static abstract class Iterator implements PathIterator { |
|
2574 |
int typeIdx; |
|
2575 |
int pointIdx; |
|
2576 |
Path2D path; |
|
2577 |
||
2578 |
static final int curvecoords[] = {2, 2, 4, 6, 0}; |
|
2579 |
||
2580 |
Iterator(Path2D path) { |
|
2581 |
this.path = path; |
|
2582 |
} |
|
2583 |
||
2584 |
public int getWindingRule() { |
|
2585 |
return path.getWindingRule(); |
|
2586 |
} |
|
2587 |
||
2588 |
public boolean isDone() { |
|
2589 |
return (typeIdx >= path.numTypes); |
|
2590 |
} |
|
2591 |
||
2592 |
public void next() { |
|
2593 |
int type = path.pointTypes[typeIdx++]; |
|
2594 |
pointIdx += curvecoords[type]; |
|
2595 |
} |
|
2596 |
} |
|
2597 |
} |