root / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / core / GeneralPathX.java @ 27847
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/*
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* Created on 10-jun-2004
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*
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* TODO To change the template for this generated file go to
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* Window - Preferences - Java - Code Generation - Code and Comments
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*/
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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package com.iver.cit.gvsig.fmap.core; |
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/**
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* @author FJP
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*
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*/
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/*
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* @(#)GeneralPathX.java 1.58 03/01/23
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*
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* Copyright 2003 Sun Microsystems, Inc. All rights reserved.
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* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*/
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import java.awt.Shape; |
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import java.awt.geom.AffineTransform; |
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import java.awt.geom.FlatteningPathIterator; |
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import java.awt.geom.IllegalPathStateException; |
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import java.awt.geom.PathIterator; |
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import java.awt.geom.Point2D; |
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import java.awt.geom.Rectangle2D; |
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import java.io.Serializable; |
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import java.util.ArrayList; |
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import org.cresques.cts.ICoordTrans; |
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import org.gvsig.geoutils.sun.awt.geom.Crossings; |
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import org.gvsig.geoutils.sun.awt.geom.Curve; |
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import com.iver.cit.gvsig.fmap.core.v02.FConverter; |
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import com.vividsolutions.jts.algorithm.CGAlgorithms; |
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import com.vividsolutions.jts.geom.Coordinate; |
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import com.vividsolutions.jts.geom.CoordinateList; |
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import com.vividsolutions.jts.geom.CoordinateSequences; |
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import com.vividsolutions.jts.geom.impl.CoordinateArraySequence; |
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/**
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* The <code>GeneralPathX</code> class represents a geometric path
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* constructed from straight lines, and quadratic and cubic
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* (Bézier) curves. It can contain multiple subpaths.
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* <p>
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* The winding rule specifies how the interior of a path is
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* determined. There are two types of winding rules:
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* EVEN_ODD and NON_ZERO.
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* <p>
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* An EVEN_ODD winding rule means that enclosed regions
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* of the path alternate between interior and exterior areas as
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* traversed from the outside of the path towards a point inside
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* the region.
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* <p>
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* A NON_ZERO winding rule means that if a ray is
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* drawn in any direction from a given point to infinity
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* and the places where the path intersects
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* the ray are examined, the point is inside of the path if and only if
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* the number of times that the path crosses the ray from
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* left to right does not equal the number of times that the path crosses
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* the ray from right to left.
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* @version 1.58, 01/23/03
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* @author Jim Graham
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*/
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public class GeneralPathX implements Shape, Cloneable, Serializable { |
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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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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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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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byte[] pointTypes; |
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double[] pointCoords; |
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int numTypes;
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int numCoords;
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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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private static final int curvesize[] = {2, 2, 4, 6, 0}; |
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/**
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* Constructs a new <code>GeneralPathX</code> object.
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* If an operation performed on this path requires the
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* interior of the path to be defined then the default NON_ZERO
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* winding rule is used.
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* @see #WIND_NON_ZERO
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*/
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public GeneralPathX() {
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// this(WIND_NON_ZERO, INIT_SIZE, INIT_SIZE);
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this(WIND_EVEN_ODD, INIT_SIZE, INIT_SIZE);
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} |
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/**
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* Constructs a new <code>GeneralPathX</code> object with the specified
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* winding rule to control operations that require the interior of the
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* path to be defined.
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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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*/
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public GeneralPathX(int rule) { |
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this(rule, INIT_SIZE, INIT_SIZE);
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} |
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/**
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* Constructs a new <code>GeneralPathX</code> object with the specified
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* winding rule and the specified initial capacity to store path
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* coordinates. This number is an initial guess as to how many path
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* segments are in the path, but the storage is expanded
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* as needed to store whatever path segments are added to this path.
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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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*/
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public GeneralPathX(int rule, int initialCapacity) { |
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this(rule, initialCapacity, initialCapacity);
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} |
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/**
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* Constructs a new <code>GeneralPathX</code> object with the specified
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* winding rule and the specified initial capacities to store point types
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* and coordinates.
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* These numbers are an initial guess as to how many path segments
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* and how many points are to be in the path, but the
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* storage is expanded as needed to store whatever path segments are
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* added to this path.
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* @param rule the winding rule
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* @param initialTypes the estimate for the number of path segments
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* in the path
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* @param initialCapacity the estimate for the number of points
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* @see #WIND_EVEN_ODD
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* @see #WIND_NON_ZERO
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*/
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GeneralPathX(int rule, int initialTypes, int initialCoords) { |
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setWindingRule(rule); |
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pointTypes = new byte[initialTypes]; |
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pointCoords = new double[initialCoords * 2]; |
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} |
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/**
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* Constructs a new <code>GeneralPathX</code> object from an arbitrary
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* {@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</code> object.
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* @param s the specified <code>Shape</code> object
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*/
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public GeneralPathX(Shape s) { |
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// this(WIND_NON_ZERO, INIT_SIZE, INIT_SIZE);
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this(WIND_EVEN_ODD, INIT_SIZE, INIT_SIZE);
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PathIterator pi = s.getPathIterator(null); |
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setWindingRule(pi.getWindingRule()); |
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append(pi, false);
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} |
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private void needRoom(int newTypes, int newCoords, boolean needMove) { |
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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 = pointCoords.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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double[] arr = new double[size + grow]; |
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System.arraycopy(pointCoords, 0, arr, 0, numCoords); |
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pointCoords = arr; |
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} |
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size = pointTypes.length; |
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if (numTypes + newTypes > 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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if (grow < newTypes) {
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grow = newTypes; |
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} |
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byte[] arr = new byte[size + grow]; |
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System.arraycopy(pointTypes, 0, arr, 0, numTypes); |
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pointTypes = arr; |
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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.
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* @param x, y the specified coordinates
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*/
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public synchronized void moveTo(double x, double y) { |
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if (numTypes > 0 && pointTypes[numTypes - 1] == SEG_MOVETO) { |
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pointCoords[numCoords - 2] = x;
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pointCoords[numCoords - 1] = y;
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} else {
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needRoom(1, 2, false); |
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pointTypes[numTypes++] = SEG_MOVETO; |
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pointCoords[numCoords++] = x; |
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pointCoords[numCoords++] = y; |
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} |
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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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* @param x, y the specified coordinates
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*/
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public synchronized void lineTo(double x, double y) { |
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needRoom(1, 2, true); |
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pointTypes[numTypes++] = SEG_LINETO; |
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pointCoords[numCoords++] = x; |
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pointCoords[numCoords++] = y; |
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} |
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/**
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* Adds a curved segment, defined by two new points, to the path by
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* drawing a Quadratic curve that intersects both the current
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* coordinates and the coordinates (x2, y2), using the
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* specified point (x1, y1) as a quadratic parametric control
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* point.
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* @param x1, y1 the coordinates of the first quadratic control
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* point
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* @param x2, y2 the coordinates of the final endpoint
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*/
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public synchronized void quadTo(double x1, double y1, double x2, double y2) { |
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needRoom(1, 4, true); |
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pointTypes[numTypes++] = SEG_QUADTO; |
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pointCoords[numCoords++] = x1; |
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pointCoords[numCoords++] = y1; |
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pointCoords[numCoords++] = x2; |
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pointCoords[numCoords++] = y2; |
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} |
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/**
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* Adds a curved segment, defined by three new points, to the path by
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* drawing a Bézier curve that intersects both the current
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* coordinates and the coordinates (x3, y3), using the
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* specified points (x1, y1) and (x2, y2) as
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* Bézier control points.
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* @param x1, y1 the coordinates of the first Béezier
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* control point
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* @param x2, y2 the coordinates of the second Bézier
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* control point
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* @param x3, y3 the coordinates of the final endpoint
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*/
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public synchronized void curveTo(double x1, double y1, |
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double x2, double y2, |
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double x3, double y3) { |
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needRoom(1, 6, true); |
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pointTypes[numTypes++] = SEG_CUBICTO; |
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pointCoords[numCoords++] = x1; |
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pointCoords[numCoords++] = y1; |
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pointCoords[numCoords++] = x2; |
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pointCoords[numCoords++] = y2; |
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pointCoords[numCoords++] = x3; |
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pointCoords[numCoords++] = y3; |
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} |
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/**
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* Closes the current subpath by drawing a straight line back to
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* the coordinates of the last <code>moveTo</code>. If the path is already
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* closed then this method has no effect.
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*/
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public synchronized void closePath() { |
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if (numTypes == 0 || pointTypes[numTypes - 1] != SEG_CLOSE) { |
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needRoom(1, 0, true); |
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pointTypes[numTypes++] = SEG_CLOSE; |
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} |
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} |
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/**
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* Check if the first part is closed.
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* @return
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*/
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public boolean isClosed() |
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{ |
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PathIterator theIterator = getPathIterator(null, FConverter.FLATNESS); //polyLine.getPathIterator(null, flatness); |
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double[] theData = new double[6]; |
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double xFinal = 0; |
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double yFinal = 0; |
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double xIni = 0; |
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double yIni = 0; |
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boolean first = true; |
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while (!theIterator.isDone()) {
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//while not done
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int theType = theIterator.currentSegment(theData);
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switch (theType) {
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case PathIterator.SEG_MOVETO: |
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xIni = theData[0];
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yIni = theData[1];
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if (!first)
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{ |
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break;
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} |
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first = false;
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break;
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case PathIterator.SEG_LINETO: |
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xFinal = theData[0];
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yFinal = theData[1];
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break;
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case PathIterator.SEG_CLOSE: |
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return true; |
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} //end switch
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theIterator.next(); |
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} |
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if ((xFinal == xIni) && (yFinal == yIni))
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return true; |
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return false; |
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|
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|
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// double xFinal = pointCoords[numCoords -2];
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// double yFinal = pointCoords[numCoords -1];
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// double xIni = pointCoords[0];
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// double yIni = pointCoords[1];
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//
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// if (pointTypes[numTypes-1] == SEG_CLOSE)
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// return true;
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// if ((xFinal == xIni) && (yFinal == yIni))
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// return true;
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// return false;
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} |
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|
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|
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/**
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* Appends the geometry of the specified <code>Shape</code> object to the
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* path, possibly connecting the new geometry to the existing path
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* segments with a line segment.
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* If the <code>connect</code> parameter is <code>true</code> and the
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* path is not empty then any initial <code>moveTo</code> in the
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* geometry of the appended <code>Shape</code>
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* is turned into a <code>lineTo</code> segment.
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* If the destination coordinates of such a connecting <code>lineTo</code>
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* segment match the ending coordinates of a currently open
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* subpath then the segment is omitted as superfluous.
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* The winding rule of the specified <code>Shape</code> is ignored
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* and the appended geometry is governed by the winding
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* rule specified for this path.
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* @param s the <code>Shape</code> whose geometry is appended
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* to this path
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* @param connect a boolean to control whether or not to turn an
|
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* initial <code>moveTo</code> segment into a <code>lineTo</code>
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* segment to connect the new geometry to the existing path
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*/
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public void append(Shape s, boolean connect) { |
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PathIterator pi = s.getPathIterator(null); |
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append(pi,connect); |
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} |
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|
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/**
|
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* Appends the geometry of the specified
|
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* {@link PathIterator} object
|
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* to the path, possibly connecting the new geometry to the existing
|
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* path segments with a line segment.
|
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* If the <code>connect</code> parameter is <code>true</code> and the
|
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* path is not empty then any initial <code>moveTo</code> in the
|
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* geometry of the appended <code>Shape</code> is turned into a
|
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* <code>lineTo</code> segment.
|
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* If the destination coordinates of such a connecting <code>lineTo</code>
|
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* segment match the ending coordinates of a currently open
|
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* subpath then the segment is omitted as superfluous.
|
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* The winding rule of the specified <code>Shape</code> is ignored
|
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* and the appended geometry is governed by the winding
|
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* rule specified for this path.
|
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* @param pi the <code>PathIterator</code> whose geometry is appended to
|
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* this path
|
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* @param connect a boolean to control whether or not to turn an
|
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* initial <code>moveTo</code> segment into a <code>lineTo</code> segment
|
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* to connect the new geometry to the existing path
|
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*/
|
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public void append(PathIterator pi, boolean connect) { |
439 |
double coords[] = new double[6]; |
440 |
while (!pi.isDone()) {
|
441 |
switch (pi.currentSegment(coords)) {
|
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case SEG_MOVETO:
|
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if (!connect || numTypes < 1 || numCoords < 2) { |
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moveTo(coords[0], coords[1]); |
445 |
break;
|
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} |
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if (pointTypes[numTypes - 1] != SEG_CLOSE && |
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pointCoords[numCoords - 2] == coords[0] && |
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pointCoords[numCoords - 1] == coords[1]) |
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{ |
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// Collapse out initial moveto/lineto
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break;
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} |
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// NO BREAK;
|
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case SEG_LINETO:
|
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lineTo(coords[0], coords[1]); |
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break;
|
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case SEG_QUADTO:
|
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quadTo(coords[0], coords[1], |
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coords[2], coords[3]); |
461 |
break;
|
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case SEG_CUBICTO:
|
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curveTo(coords[0], coords[1], |
464 |
coords[2], coords[3], |
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coords[4], coords[5]); |
466 |
break;
|
467 |
case SEG_CLOSE:
|
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closePath(); |
469 |
break;
|
470 |
} |
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pi.next(); |
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connect = false;
|
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} |
474 |
} |
475 |
|
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/**
|
477 |
* Returns the fill style winding rule.
|
478 |
* @return an integer representing the current winding rule.
|
479 |
* @see #WIND_EVEN_ODD
|
480 |
* @see #WIND_NON_ZERO
|
481 |
* @see #setWindingRule
|
482 |
*/
|
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public synchronized int getWindingRule() { |
484 |
return windingRule;
|
485 |
} |
486 |
|
487 |
/**
|
488 |
* Sets the winding rule for this path to the specified value.
|
489 |
* @param rule an integer representing the specified
|
490 |
* winding rule
|
491 |
* @exception <code>IllegalArgumentException</code> if
|
492 |
* <code>rule</code> is not either
|
493 |
* <code>WIND_EVEN_ODD</code> or
|
494 |
* <code>WIND_NON_ZERO</code>
|
495 |
* @see #WIND_EVEN_ODD
|
496 |
* @see #WIND_NON_ZERO
|
497 |
* @see #getWindingRule
|
498 |
*/
|
499 |
public void setWindingRule(int rule) { |
500 |
if (rule != WIND_EVEN_ODD && rule != WIND_NON_ZERO) {
|
501 |
throw new IllegalArgumentException("winding rule must be "+ |
502 |
"WIND_EVEN_ODD or "+
|
503 |
"WIND_NON_ZERO");
|
504 |
} |
505 |
windingRule = rule; |
506 |
} |
507 |
|
508 |
/**
|
509 |
* Returns the coordinates most recently added to the end of the path
|
510 |
* as a {@link Point2D} object.
|
511 |
* @return a <code>Point2D</code> object containing the ending
|
512 |
* coordinates of the path or <code>null</code> if there are no points
|
513 |
* in the path.
|
514 |
*/
|
515 |
public synchronized Point2D getCurrentPoint() { |
516 |
if (numTypes < 1 || numCoords < 2) { |
517 |
return null; |
518 |
} |
519 |
int index = numCoords;
|
520 |
if (pointTypes[numTypes - 1] == SEG_CLOSE) { |
521 |
loop: |
522 |
for (int i = numTypes - 2; i > 0; i--) { |
523 |
switch (pointTypes[i]) {
|
524 |
case SEG_MOVETO:
|
525 |
break loop;
|
526 |
case SEG_LINETO:
|
527 |
index -= 2;
|
528 |
break;
|
529 |
case SEG_QUADTO:
|
530 |
index -= 4;
|
531 |
break;
|
532 |
case SEG_CUBICTO:
|
533 |
index -= 6;
|
534 |
break;
|
535 |
case SEG_CLOSE:
|
536 |
break;
|
537 |
} |
538 |
} |
539 |
} |
540 |
return new Point2D.Double(pointCoords[index - 2], |
541 |
pointCoords[index - 1]);
|
542 |
} |
543 |
|
544 |
/**
|
545 |
* Resets the path to empty. The append position is set back to the
|
546 |
* beginning of the path and all coordinates and point types are
|
547 |
* forgotten.
|
548 |
*/
|
549 |
public synchronized void reset() { |
550 |
numTypes = numCoords = 0;
|
551 |
} |
552 |
|
553 |
/**
|
554 |
* Transforms the geometry of this path using the specified
|
555 |
* {@link AffineTransform}.
|
556 |
* The geometry is transformed in place, which permanently changes the
|
557 |
* boundary defined by this object.
|
558 |
* @param at the <code>AffineTransform</code> used to transform the area
|
559 |
*/
|
560 |
public void transform(AffineTransform at) { |
561 |
at.transform(pointCoords, 0, pointCoords, 0, numCoords / 2); |
562 |
} |
563 |
|
564 |
public void reProject(ICoordTrans ct) |
565 |
{ |
566 |
Point2D pt = new Point2D.Double(); |
567 |
for (int i = 0; i < numCoords; i+=2) |
568 |
{ |
569 |
pt.setLocation(pointCoords[i], pointCoords[i+1]);
|
570 |
pt = ct.convert(pt,null);
|
571 |
pointCoords[i] = pt.getX(); |
572 |
pointCoords[i+1] = pt.getY();
|
573 |
} |
574 |
|
575 |
} |
576 |
|
577 |
|
578 |
/**
|
579 |
* Returns a new transformed <code>Shape</code>.
|
580 |
* @param at the <code>AffineTransform</code> used to transform a
|
581 |
* new <code>Shape</code>.
|
582 |
* @return a new <code>Shape</code>, transformed with the specified
|
583 |
* <code>AffineTransform</code>.
|
584 |
*/
|
585 |
public synchronized Shape createTransformedShape(AffineTransform at) { |
586 |
GeneralPathX gp = (GeneralPathX) clone(); |
587 |
if (at != null) { |
588 |
gp.transform(at); |
589 |
} |
590 |
return gp;
|
591 |
} |
592 |
|
593 |
/**
|
594 |
* Return the bounding box of the path.
|
595 |
* @return a {@link java.awt.Rectangle} object that
|
596 |
* bounds the current path.
|
597 |
*/
|
598 |
public java.awt.Rectangle getBounds() {
|
599 |
return getBounds2D().getBounds();
|
600 |
} |
601 |
|
602 |
/**
|
603 |
* Returns the bounding box of the path.
|
604 |
* @return a {@link Rectangle2D} object that
|
605 |
* bounds the current path.
|
606 |
*/
|
607 |
public synchronized Rectangle2D getBounds2D() { |
608 |
double x1, y1, x2, y2;
|
609 |
int i = numCoords;
|
610 |
if (i > 0) { |
611 |
y1 = y2 = pointCoords[--i]; |
612 |
x1 = x2 = pointCoords[--i]; |
613 |
while (i > 0) { |
614 |
double y = pointCoords[--i];
|
615 |
double x = pointCoords[--i];
|
616 |
if (x < x1) x1 = x;
|
617 |
if (y < y1) y1 = y;
|
618 |
if (x > x2) x2 = x;
|
619 |
if (y > y2) y2 = y;
|
620 |
} |
621 |
} else {
|
622 |
x1 = y1 = x2 = y2 = 0.0f;
|
623 |
} |
624 |
return new Rectangle2D.Double(x1, y1, x2 - x1, y2 - y1); |
625 |
} |
626 |
|
627 |
/**
|
628 |
* Tests if the specified coordinates are inside the boundary of
|
629 |
* this <code>Shape</code>.
|
630 |
* @param x, y the specified coordinates
|
631 |
* @return <code>true</code> if the specified coordinates are inside this
|
632 |
* <code>Shape</code>; <code>false</code> otherwise
|
633 |
*/
|
634 |
public boolean contains(double x, double y) { |
635 |
if (numTypes < 2) { |
636 |
return false; |
637 |
} |
638 |
int cross = Curve.pointCrossingsForPath(getPathIterator(null), x, y); |
639 |
if (windingRule == WIND_NON_ZERO) {
|
640 |
return (cross != 0); |
641 |
} else {
|
642 |
return ((cross & 1) != 0); |
643 |
} |
644 |
} |
645 |
|
646 |
/**
|
647 |
* Tests if the specified <code>Point2D</code> is inside the boundary
|
648 |
* of this <code>Shape</code>.
|
649 |
* @param p the specified <code>Point2D</code>
|
650 |
* @return <code>true</code> if this <code>Shape</code> contains the
|
651 |
* specified <code>Point2D</code>, <code>false</code> otherwise.
|
652 |
*/
|
653 |
public boolean contains(Point2D p) { |
654 |
return contains(p.getX(), p.getY());
|
655 |
} |
656 |
|
657 |
/**
|
658 |
* Tests if the specified rectangular area is inside the boundary of
|
659 |
* this <code>Shape</code>.
|
660 |
* @param x, y the specified coordinates
|
661 |
* @param w the width of the specified rectangular area
|
662 |
* @param h the height of the specified rectangular area
|
663 |
* @return <code>true</code> if this <code>Shape</code> contains
|
664 |
* the specified rectangluar area; <code>false</code> otherwise.
|
665 |
*/
|
666 |
public boolean contains(double x, double y, double w, double h) { |
667 |
Crossings c = Crossings.findCrossings(getPathIterator(null),
|
668 |
x, y, x+w, y+h); |
669 |
return (c != null && c.covers(y, y+h)); |
670 |
} |
671 |
|
672 |
/**
|
673 |
* Tests if the specified <code>Rectangle2D</code>
|
674 |
* is inside the boundary of this <code>Shape</code>.
|
675 |
* @param r a specified <code>Rectangle2D</code>
|
676 |
* @return <code>true</code> if this <code>Shape</code> bounds the
|
677 |
* specified <code>Rectangle2D</code>; <code>false</code> otherwise.
|
678 |
*/
|
679 |
public boolean contains(Rectangle2D r) { |
680 |
return contains(r.getX(), r.getY(), r.getWidth(), r.getHeight());
|
681 |
} |
682 |
|
683 |
/**
|
684 |
* Tests if the interior of this <code>Shape</code> intersects the
|
685 |
* interior of a specified set of rectangular coordinates.
|
686 |
* @param x, y the specified coordinates
|
687 |
* @param w the width of the specified rectangular coordinates
|
688 |
* @param h the height of the specified rectangular coordinates
|
689 |
* @return <code>true</code> if this <code>Shape</code> and the
|
690 |
* interior of the specified set of rectangular coordinates intersect
|
691 |
* each other; <code>false</code> otherwise.
|
692 |
*/
|
693 |
public boolean intersects(double x, double y, double w, double h) { |
694 |
Crossings c = Crossings.findCrossings(getPathIterator(null),
|
695 |
x, y, x+w, y+h); |
696 |
return (c == null || !c.isEmpty()); |
697 |
} |
698 |
|
699 |
/**
|
700 |
* Tests if the interior of this <code>Shape</code> intersects the
|
701 |
* interior of a specified <code>Rectangle2D</code>.
|
702 |
* @param r the specified <code>Rectangle2D</code>
|
703 |
* @return <code>true</code> if this <code>Shape</code> and the interior
|
704 |
* of the specified <code>Rectangle2D</code> intersect each
|
705 |
* other; <code>false</code> otherwise.
|
706 |
*/
|
707 |
public boolean intersects(Rectangle2D r) { |
708 |
return intersects(r.getX(), r.getY(), r.getWidth(), r.getHeight());
|
709 |
} |
710 |
|
711 |
/**
|
712 |
* Returns a <code>PathIterator</code> object that iterates along the
|
713 |
* boundary of this <code>Shape</code> and provides access to the
|
714 |
* geometry of the outline of this <code>Shape</code>.
|
715 |
* The iterator for this class is not multi-threaded safe,
|
716 |
* which means that this <code>GeneralPathX</code> class does not
|
717 |
* guarantee that modifications to the geometry of this
|
718 |
* <code>GeneralPathX</code> object do not affect any iterations of
|
719 |
* that geometry that are already in process.
|
720 |
* @param at an <code>AffineTransform</code>
|
721 |
* @return a new <code>PathIterator</code> that iterates along the
|
722 |
* boundary of this <code>Shape</code> and provides access to the
|
723 |
* geometry of this <code>Shape</code>'s outline
|
724 |
*/
|
725 |
public PathIterator getPathIterator(AffineTransform at) { |
726 |
return new GeneralPathXIterator(this, at); |
727 |
} |
728 |
|
729 |
/**
|
730 |
* Returns a <code>PathIterator</code> object that iterates along the
|
731 |
* boundary of the flattened <code>Shape</code> and provides access to the
|
732 |
* geometry of the outline of the <code>Shape</code>.
|
733 |
* The iterator for this class is not multi-threaded safe,
|
734 |
* which means that this <code>GeneralPathX</code> class does not
|
735 |
* guarantee that modifications to the geometry of this
|
736 |
* <code>GeneralPathX</code> object do not affect any iterations of
|
737 |
* that geometry that are already in process.
|
738 |
* @param at an <code>AffineTransform</code>
|
739 |
* @param flatness the maximum distance that the line segments used to
|
740 |
* approximate the curved segments are allowed to deviate
|
741 |
* from any point on the original curve
|
742 |
* @return a new <code>PathIterator</code> that iterates along the flattened
|
743 |
* <code>Shape</code> boundary.
|
744 |
*/
|
745 |
public PathIterator getPathIterator(AffineTransform at, double flatness) { |
746 |
return new FlatteningPathIterator(getPathIterator(at), flatness); |
747 |
} |
748 |
|
749 |
/**
|
750 |
* Creates a new object of the same class as this object.
|
751 |
*
|
752 |
* @return a clone of this instance.
|
753 |
* @exception OutOfMemoryError if there is not enough memory.
|
754 |
* @see java.lang.Cloneable
|
755 |
* @since 1.2
|
756 |
*/
|
757 |
public Object clone() { |
758 |
try {
|
759 |
GeneralPathX copy = (GeneralPathX) super.clone();
|
760 |
copy.pointTypes = (byte[]) pointTypes.clone(); |
761 |
copy.pointCoords = (double[]) pointCoords.clone(); |
762 |
return copy;
|
763 |
} catch (CloneNotSupportedException e) { |
764 |
// this shouldn't happen, since we are Cloneable
|
765 |
throw new InternalError(); |
766 |
} |
767 |
} |
768 |
|
769 |
GeneralPathX(int windingRule,
|
770 |
byte[] pointTypes, |
771 |
int numTypes,
|
772 |
double[] pointCoords, |
773 |
int numCoords) {
|
774 |
|
775 |
// used to construct from native
|
776 |
|
777 |
this.windingRule = windingRule;
|
778 |
this.pointTypes = pointTypes;
|
779 |
this.numTypes = numTypes;
|
780 |
this.pointCoords = pointCoords;
|
781 |
this.numCoords = numCoords;
|
782 |
} |
783 |
|
784 |
/**
|
785 |
* Convertimos el path a puntos y luego le damos la vuelta.
|
786 |
*/
|
787 |
public void flip() |
788 |
{ |
789 |
PathIterator theIterator = getPathIterator(null, FConverter.FLATNESS); //polyLine.getPathIterator(null, flatness); |
790 |
double[] theData = new double[6]; |
791 |
Coordinate first = null;
|
792 |
CoordinateList coordList = new CoordinateList();
|
793 |
Coordinate c1; |
794 |
GeneralPathX newGp = new GeneralPathX();
|
795 |
ArrayList listOfParts = new ArrayList(); |
796 |
while (!theIterator.isDone()) {
|
797 |
//while not done
|
798 |
int type = theIterator.currentSegment(theData);
|
799 |
switch (type)
|
800 |
{ |
801 |
case SEG_MOVETO:
|
802 |
coordList = new CoordinateList();
|
803 |
listOfParts.add(coordList); |
804 |
c1= new Coordinate(theData[0], theData[1]); |
805 |
coordList.add(c1, true);
|
806 |
break;
|
807 |
case SEG_LINETO:
|
808 |
c1= new Coordinate(theData[0], theData[1]); |
809 |
coordList.add(c1, true);
|
810 |
break;
|
811 |
|
812 |
case SEG_CLOSE:
|
813 |
coordList.add(coordList.getCoordinate(0));
|
814 |
break;
|
815 |
|
816 |
} |
817 |
theIterator.next(); |
818 |
} |
819 |
|
820 |
for (int i=listOfParts.size()-1; i>=0; i--) |
821 |
{ |
822 |
coordList = (CoordinateList) listOfParts.get(i); |
823 |
Coordinate[] coords = coordList.toCoordinateArray();
|
824 |
CoordinateArraySequence seq = new CoordinateArraySequence(coords);
|
825 |
CoordinateSequences.reverse(seq); |
826 |
coords = seq.toCoordinateArray(); |
827 |
newGp.moveTo(coords[0].x, coords[0].y); |
828 |
for (int j=1; j < coords.length; j++) |
829 |
{ |
830 |
newGp.lineTo(coords[j].x, coords[j].y); |
831 |
} |
832 |
} |
833 |
reset(); |
834 |
append(newGp, false);
|
835 |
} |
836 |
|
837 |
/**
|
838 |
* Use this function to ensure you get real polygons or holes
|
839 |
* En JTS, con bCCW = false obtienes un pol?gono exterior.
|
840 |
* Nota: Solo se le da la vuelta (si es que lo necesita) al
|
841 |
* pol?gono exterior. El resto, por ahora, no se tocan.
|
842 |
* Si se necesita tenerlos en cuenta, habr?a que mirar
|
843 |
* si est?n dentro del otro, y entonces revisar que tiene
|
844 |
* un CCW contrario al exterior.
|
845 |
* @param bCCW true if you want the GeneralPath in CCW order
|
846 |
* @return true si se le ha dado la vuelta. (true if flipped)
|
847 |
* TODO: TERMINAR ESTO!! NO EST? COMPLETO!! NO sirve para multipoligonos
|
848 |
*/
|
849 |
public boolean ensureOrientation(boolean bCCW) { |
850 |
byte[] pointTypesAux = new byte[numTypes+1]; |
851 |
double[] pointCoordsAux = new double[numCoords+2]; |
852 |
int i;
|
853 |
int pointIdx = 0; |
854 |
|
855 |
Coordinate c1, c2, c3; |
856 |
CoordinateList coordList = new CoordinateList();
|
857 |
CoordinateList firstList = new CoordinateList();
|
858 |
boolean bFirstList = true; |
859 |
Coordinate cInicio = null;
|
860 |
|
861 |
for (i=0; i< numTypes; i++) |
862 |
{ |
863 |
int type = pointTypes[i];
|
864 |
|
865 |
switch (type)
|
866 |
{ |
867 |
case SEG_MOVETO:
|
868 |
c1= new Coordinate(pointCoords[pointIdx], pointCoords[pointIdx+1]); |
869 |
cInicio = c1; |
870 |
coordList.add(c1, true);
|
871 |
if (i>0) bFirstList = false; |
872 |
if (bFirstList)
|
873 |
{ |
874 |
firstList.add(c1,true);
|
875 |
} |
876 |
break;
|
877 |
case SEG_LINETO:
|
878 |
c1= new Coordinate(pointCoords[pointIdx], pointCoords[pointIdx+1]); |
879 |
coordList.add(c1, true);
|
880 |
if (bFirstList)
|
881 |
{ |
882 |
firstList.add(c1,true);
|
883 |
} |
884 |
break;
|
885 |
case SEG_QUADTO:
|
886 |
c1= new Coordinate(pointCoords[pointIdx], pointCoords[pointIdx+1]); |
887 |
coordList.add(c1, true);
|
888 |
c2= new Coordinate(pointCoords[pointIdx+2], pointCoords[pointIdx+3]); |
889 |
coordList.add(c2, true);
|
890 |
if (bFirstList)
|
891 |
{ |
892 |
firstList.add(c1,true);
|
893 |
firstList.add(c2,true);
|
894 |
} |
895 |
|
896 |
break;
|
897 |
case SEG_CUBICTO:
|
898 |
c1= new Coordinate(pointCoords[pointIdx], pointCoords[pointIdx+1]); |
899 |
coordList.add(c1, true);
|
900 |
c2= new Coordinate(pointCoords[pointIdx+2], pointCoords[pointIdx+3]); |
901 |
coordList.add(c2, true);
|
902 |
c3= new Coordinate(pointCoords[pointIdx+4], pointCoords[pointIdx+5]); |
903 |
coordList.add(c3, true);
|
904 |
if (bFirstList)
|
905 |
{ |
906 |
firstList.add(c1,true);
|
907 |
firstList.add(c2,true);
|
908 |
firstList.add(c3,true);
|
909 |
} |
910 |
|
911 |
break;
|
912 |
case SEG_CLOSE:
|
913 |
coordList.add(cInicio, true);
|
914 |
if (bFirstList)
|
915 |
{ |
916 |
firstList.add(cInicio,true);
|
917 |
} |
918 |
break;
|
919 |
|
920 |
} |
921 |
pointIdx += curvesize[type]; |
922 |
} |
923 |
// Guardamos el path dandole la vuelta
|
924 |
Coordinate[] coords = coordList.toCoordinateArray();
|
925 |
boolean bFlipped = false; |
926 |
if (CGAlgorithms.isCCW(coords) != bCCW) // Le damos la vuelta |
927 |
{ |
928 |
CoordinateArraySequence seq = new CoordinateArraySequence(coords);
|
929 |
CoordinateSequences.reverse(seq); |
930 |
coords = seq.toCoordinateArray(); |
931 |
|
932 |
|
933 |
// En el primer punto metemos un moveto
|
934 |
pointCoordsAux[0] = coords[0].x; |
935 |
pointCoordsAux[1] = coords[0].y; |
936 |
pointTypesAux[0] = SEG_MOVETO;
|
937 |
int idx = 2; |
938 |
i=0;
|
939 |
int j=1; |
940 |
for (int k=0; k < coords.length; k++) |
941 |
{ |
942 |
pointCoordsAux[idx++] = coords[k].x; |
943 |
pointCoordsAux[idx++] = coords[k].y; |
944 |
int type = pointTypes[i++];
|
945 |
pointIdx += curvesize[type]; |
946 |
switch (type)
|
947 |
{ |
948 |
case SEG_MOVETO:
|
949 |
pointTypesAux[j] = SEG_LINETO; |
950 |
break;
|
951 |
case SEG_LINETO:
|
952 |
pointTypesAux[j] = SEG_LINETO; |
953 |
break;
|
954 |
case SEG_QUADTO:
|
955 |
pointTypesAux[j] = SEG_QUADTO; |
956 |
break;
|
957 |
case SEG_CUBICTO:
|
958 |
pointTypesAux[j] = SEG_CUBICTO; |
959 |
break;
|
960 |
case SEG_CLOSE:
|
961 |
// TODO: IMPLEMENTAR ESTO!!!
|
962 |
break;
|
963 |
|
964 |
} |
965 |
j++; |
966 |
|
967 |
} |
968 |
|
969 |
pointTypes = pointTypesAux; |
970 |
pointCoords = pointCoordsAux; |
971 |
numCoords= numCoords+2;
|
972 |
numTypes++; |
973 |
bFlipped = true;
|
974 |
|
975 |
} |
976 |
return bFlipped;
|
977 |
} |
978 |
|
979 |
/**
|
980 |
* Check if the first part is CCW.
|
981 |
* @return
|
982 |
*/
|
983 |
public boolean isCCW() |
984 |
{ |
985 |
int i;
|
986 |
|
987 |
PathIterator theIterator = getPathIterator(null, FConverter.FLATNESS); //polyLine.getPathIterator(null, flatness); |
988 |
double[] theData = new double[6]; |
989 |
Coordinate first = null;
|
990 |
CoordinateList coordList = new CoordinateList();
|
991 |
Coordinate c1; |
992 |
boolean bFirst = true; |
993 |
while (!theIterator.isDone()) {
|
994 |
//while not done
|
995 |
int type = theIterator.currentSegment(theData);
|
996 |
switch (type)
|
997 |
{ |
998 |
case SEG_MOVETO:
|
999 |
c1= new Coordinate(theData[0], theData[1]); |
1000 |
if (bFirst == false) // Ya tenemos la primera parte. |
1001 |
break;
|
1002 |
if (bFirst)
|
1003 |
{ |
1004 |
bFirst=false;
|
1005 |
first = c1; |
1006 |
} |
1007 |
coordList.add(c1, true);
|
1008 |
break;
|
1009 |
case SEG_LINETO:
|
1010 |
c1= new Coordinate(theData[0], theData[1]); |
1011 |
coordList.add(c1, true);
|
1012 |
break;
|
1013 |
|
1014 |
} |
1015 |
theIterator.next(); |
1016 |
} |
1017 |
coordList.add(first, true);
|
1018 |
return CGAlgorithms.isCCW(coordList.toCoordinateArray());
|
1019 |
|
1020 |
} |
1021 |
|
1022 |
} |