root / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / core / GeneralPathX.java @ 5893
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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 org.cresques.cts.ICoordTrans; |
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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.CoordinateSequence; |
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import com.vividsolutions.jts.geom.CoordinateSequences; |
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import com.vividsolutions.jts.geom.GeometryFactory; |
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import com.vividsolutions.jts.geom.Point; |
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import com.vividsolutions.jts.geom.impl.CoordinateArraySequence; |
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import sun.awt.geom.Crossings; |
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import sun.awt.geom.Curve; |
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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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/**
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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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public boolean isClosed() |
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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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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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* 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) { |
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double coords[] = new double[6]; |
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while (!pi.isDone()) {
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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]); |
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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]); |
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break;
|
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case SEG_CUBICTO:
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curveTo(coords[0], coords[1], |
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coords[2], coords[3], |
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coords[4], coords[5]); |
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break;
|
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case SEG_CLOSE:
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closePath(); |
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break;
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} |
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pi.next(); |
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connect = false;
|
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} |
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} |
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|
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/**
|
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* Returns the fill style winding rule.
|
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* @return an integer representing the current winding rule.
|
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* @see #WIND_EVEN_ODD
|
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* @see #WIND_NON_ZERO
|
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* @see #setWindingRule
|
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*/
|
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public synchronized int getWindingRule() { |
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return windingRule;
|
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} |
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|
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/**
|
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* Sets the winding rule for this path to the specified value.
|
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* @param rule an integer representing the specified
|
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* winding rule
|
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* @exception <code>IllegalArgumentException</code> if
|
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* <code>rule</code> is not either
|
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* <code>WIND_EVEN_ODD</code> or
|
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* <code>WIND_NON_ZERO</code>
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* @see #WIND_EVEN_ODD
|
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* @see #WIND_NON_ZERO
|
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* @see #getWindingRule
|
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*/
|
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public void setWindingRule(int rule) { |
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if (rule != WIND_EVEN_ODD && rule != WIND_NON_ZERO) {
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throw new IllegalArgumentException("winding rule must be "+ |
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"WIND_EVEN_ODD or "+
|
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"WIND_NON_ZERO");
|
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} |
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windingRule = rule; |
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} |
464 |
|
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/**
|
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* Returns the coordinates most recently added to the end of the path
|
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* as a {@link Point2D} object.
|
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* @return a <code>Point2D</code> object containing the ending
|
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* coordinates of the path or <code>null</code> if there are no points
|
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* in the path.
|
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*/
|
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public synchronized Point2D getCurrentPoint() { |
473 |
if (numTypes < 1 || numCoords < 2) { |
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return null; |
475 |
} |
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int index = numCoords;
|
477 |
if (pointTypes[numTypes - 1] == SEG_CLOSE) { |
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loop: |
479 |
for (int i = numTypes - 2; i > 0; i--) { |
480 |
switch (pointTypes[i]) {
|
481 |
case SEG_MOVETO:
|
482 |
break loop;
|
483 |
case SEG_LINETO:
|
484 |
index -= 2;
|
485 |
break;
|
486 |
case SEG_QUADTO:
|
487 |
index -= 4;
|
488 |
break;
|
489 |
case SEG_CUBICTO:
|
490 |
index -= 6;
|
491 |
break;
|
492 |
case SEG_CLOSE:
|
493 |
break;
|
494 |
} |
495 |
} |
496 |
} |
497 |
return new Point2D.Double(pointCoords[index - 2], |
498 |
pointCoords[index - 1]);
|
499 |
} |
500 |
|
501 |
/**
|
502 |
* Resets the path to empty. The append position is set back to the
|
503 |
* beginning of the path and all coordinates and point types are
|
504 |
* forgotten.
|
505 |
*/
|
506 |
public synchronized void reset() { |
507 |
numTypes = numCoords = 0;
|
508 |
} |
509 |
|
510 |
/**
|
511 |
* Transforms the geometry of this path using the specified
|
512 |
* {@link AffineTransform}.
|
513 |
* The geometry is transformed in place, which permanently changes the
|
514 |
* boundary defined by this object.
|
515 |
* @param at the <code>AffineTransform</code> used to transform the area
|
516 |
*/
|
517 |
public void transform(AffineTransform at) { |
518 |
at.transform(pointCoords, 0, pointCoords, 0, numCoords / 2); |
519 |
} |
520 |
|
521 |
public void reProject(ICoordTrans ct) |
522 |
{ |
523 |
Point2D pt = new Point2D.Double(); |
524 |
for (int i = 0; i < numCoords; i+=2) |
525 |
{ |
526 |
pt.setLocation(pointCoords[i], pointCoords[i+1]);
|
527 |
pt = ct.convert(pt,null);
|
528 |
pointCoords[i] = pt.getX(); |
529 |
pointCoords[i+1] = pt.getY();
|
530 |
} |
531 |
|
532 |
} |
533 |
|
534 |
|
535 |
/**
|
536 |
* Returns a new transformed <code>Shape</code>.
|
537 |
* @param at the <code>AffineTransform</code> used to transform a
|
538 |
* new <code>Shape</code>.
|
539 |
* @return a new <code>Shape</code>, transformed with the specified
|
540 |
* <code>AffineTransform</code>.
|
541 |
*/
|
542 |
public synchronized Shape createTransformedShape(AffineTransform at) { |
543 |
GeneralPathX gp = (GeneralPathX) clone(); |
544 |
if (at != null) { |
545 |
gp.transform(at); |
546 |
} |
547 |
return gp;
|
548 |
} |
549 |
|
550 |
/**
|
551 |
* Return the bounding box of the path.
|
552 |
* @return a {@link java.awt.Rectangle} object that
|
553 |
* bounds the current path.
|
554 |
*/
|
555 |
public java.awt.Rectangle getBounds() {
|
556 |
return getBounds2D().getBounds();
|
557 |
} |
558 |
|
559 |
/**
|
560 |
* Returns the bounding box of the path.
|
561 |
* @return a {@link Rectangle2D} object that
|
562 |
* bounds the current path.
|
563 |
*/
|
564 |
public synchronized Rectangle2D getBounds2D() { |
565 |
double x1, y1, x2, y2;
|
566 |
int i = numCoords;
|
567 |
if (i > 0) { |
568 |
y1 = y2 = pointCoords[--i]; |
569 |
x1 = x2 = pointCoords[--i]; |
570 |
while (i > 0) { |
571 |
double y = pointCoords[--i];
|
572 |
double x = pointCoords[--i];
|
573 |
if (x < x1) x1 = x;
|
574 |
if (y < y1) y1 = y;
|
575 |
if (x > x2) x2 = x;
|
576 |
if (y > y2) y2 = y;
|
577 |
} |
578 |
} else {
|
579 |
x1 = y1 = x2 = y2 = 0.0f;
|
580 |
} |
581 |
return new Rectangle2D.Double(x1, y1, x2 - x1, y2 - y1); |
582 |
} |
583 |
|
584 |
/**
|
585 |
* Tests if the specified coordinates are inside the boundary of
|
586 |
* this <code>Shape</code>.
|
587 |
* @param x, y the specified coordinates
|
588 |
* @return <code>true</code> if the specified coordinates are inside this
|
589 |
* <code>Shape</code>; <code>false</code> otherwise
|
590 |
*/
|
591 |
public boolean contains(double x, double y) { |
592 |
if (numTypes < 2) { |
593 |
return false; |
594 |
} |
595 |
int cross = Curve.crossingsForPath(getPathIterator(null), x, y); |
596 |
if (windingRule == WIND_NON_ZERO) {
|
597 |
return (cross != 0); |
598 |
} else {
|
599 |
return ((cross & 1) != 0); |
600 |
} |
601 |
} |
602 |
|
603 |
/**
|
604 |
* Tests if the specified <code>Point2D</code> is inside the boundary
|
605 |
* of this <code>Shape</code>.
|
606 |
* @param p the specified <code>Point2D</code>
|
607 |
* @return <code>true</code> if this <code>Shape</code> contains the
|
608 |
* specified <code>Point2D</code>, <code>false</code> otherwise.
|
609 |
*/
|
610 |
public boolean contains(Point2D p) { |
611 |
return contains(p.getX(), p.getY());
|
612 |
} |
613 |
|
614 |
/**
|
615 |
* Tests if the specified rectangular area is inside the boundary of
|
616 |
* this <code>Shape</code>.
|
617 |
* @param x, y the specified coordinates
|
618 |
* @param w the width of the specified rectangular area
|
619 |
* @param h the height of the specified rectangular area
|
620 |
* @return <code>true</code> if this <code>Shape</code> contains
|
621 |
* the specified rectangluar area; <code>false</code> otherwise.
|
622 |
*/
|
623 |
public boolean contains(double x, double y, double w, double h) { |
624 |
Crossings c = Crossings.findCrossings(getPathIterator(null),
|
625 |
x, y, x+w, y+h); |
626 |
return (c != null && c.covers(y, y+h)); |
627 |
} |
628 |
|
629 |
/**
|
630 |
* Tests if the specified <code>Rectangle2D</code>
|
631 |
* is inside the boundary of this <code>Shape</code>.
|
632 |
* @param r a specified <code>Rectangle2D</code>
|
633 |
* @return <code>true</code> if this <code>Shape</code> bounds the
|
634 |
* specified <code>Rectangle2D</code>; <code>false</code> otherwise.
|
635 |
*/
|
636 |
public boolean contains(Rectangle2D r) { |
637 |
return contains(r.getX(), r.getY(), r.getWidth(), r.getHeight());
|
638 |
} |
639 |
|
640 |
/**
|
641 |
* Tests if the interior of this <code>Shape</code> intersects the
|
642 |
* interior of a specified set of rectangular coordinates.
|
643 |
* @param x, y the specified coordinates
|
644 |
* @param w the width of the specified rectangular coordinates
|
645 |
* @param h the height of the specified rectangular coordinates
|
646 |
* @return <code>true</code> if this <code>Shape</code> and the
|
647 |
* interior of the specified set of rectangular coordinates intersect
|
648 |
* each other; <code>false</code> otherwise.
|
649 |
*/
|
650 |
public boolean intersects(double x, double y, double w, double h) { |
651 |
Crossings c = Crossings.findCrossings(getPathIterator(null),
|
652 |
x, y, x+w, y+h); |
653 |
return (c == null || !c.isEmpty()); |
654 |
} |
655 |
|
656 |
/**
|
657 |
* Tests if the interior of this <code>Shape</code> intersects the
|
658 |
* interior of a specified <code>Rectangle2D</code>.
|
659 |
* @param r the specified <code>Rectangle2D</code>
|
660 |
* @return <code>true</code> if this <code>Shape</code> and the interior
|
661 |
* of the specified <code>Rectangle2D</code> intersect each
|
662 |
* other; <code>false</code> otherwise.
|
663 |
*/
|
664 |
public boolean intersects(Rectangle2D r) { |
665 |
return intersects(r.getX(), r.getY(), r.getWidth(), r.getHeight());
|
666 |
} |
667 |
|
668 |
/**
|
669 |
* Returns a <code>PathIterator</code> object that iterates along the
|
670 |
* boundary of this <code>Shape</code> and provides access to the
|
671 |
* geometry of the outline of this <code>Shape</code>.
|
672 |
* The iterator for this class is not multi-threaded safe,
|
673 |
* which means that this <code>GeneralPathX</code> class does not
|
674 |
* guarantee that modifications to the geometry of this
|
675 |
* <code>GeneralPathX</code> object do not affect any iterations of
|
676 |
* that geometry that are already in process.
|
677 |
* @param at an <code>AffineTransform</code>
|
678 |
* @return a new <code>PathIterator</code> that iterates along the
|
679 |
* boundary of this <code>Shape</code> and provides access to the
|
680 |
* geometry of this <code>Shape</code>'s outline
|
681 |
*/
|
682 |
public PathIterator getPathIterator(AffineTransform at) { |
683 |
return new GeneralPathXIterator(this, at); |
684 |
} |
685 |
|
686 |
/**
|
687 |
* Returns a <code>PathIterator</code> object that iterates along the
|
688 |
* boundary of the flattened <code>Shape</code> and provides access to the
|
689 |
* geometry of the outline of the <code>Shape</code>.
|
690 |
* The iterator for this class is not multi-threaded safe,
|
691 |
* which means that this <code>GeneralPathX</code> class does not
|
692 |
* guarantee that modifications to the geometry of this
|
693 |
* <code>GeneralPathX</code> object do not affect any iterations of
|
694 |
* that geometry that are already in process.
|
695 |
* @param at an <code>AffineTransform</code>
|
696 |
* @param flatness the maximum distance that the line segments used to
|
697 |
* approximate the curved segments are allowed to deviate
|
698 |
* from any point on the original curve
|
699 |
* @return a new <code>PathIterator</code> that iterates along the flattened
|
700 |
* <code>Shape</code> boundary.
|
701 |
*/
|
702 |
public PathIterator getPathIterator(AffineTransform at, double flatness) { |
703 |
return new FlatteningPathIterator(getPathIterator(at), flatness); |
704 |
} |
705 |
|
706 |
/**
|
707 |
* Creates a new object of the same class as this object.
|
708 |
*
|
709 |
* @return a clone of this instance.
|
710 |
* @exception OutOfMemoryError if there is not enough memory.
|
711 |
* @see java.lang.Cloneable
|
712 |
* @since 1.2
|
713 |
*/
|
714 |
public Object clone() { |
715 |
try {
|
716 |
GeneralPathX copy = (GeneralPathX) super.clone();
|
717 |
copy.pointTypes = (byte[]) pointTypes.clone(); |
718 |
copy.pointCoords = (double[]) pointCoords.clone(); |
719 |
return copy;
|
720 |
} catch (CloneNotSupportedException e) { |
721 |
// this shouldn't happen, since we are Cloneable
|
722 |
throw new InternalError(); |
723 |
} |
724 |
} |
725 |
|
726 |
GeneralPathX(int windingRule,
|
727 |
byte[] pointTypes, |
728 |
int numTypes,
|
729 |
double[] pointCoords, |
730 |
int numCoords) {
|
731 |
|
732 |
// used to construct from native
|
733 |
|
734 |
this.windingRule = windingRule;
|
735 |
this.pointTypes = pointTypes;
|
736 |
this.numTypes = numTypes;
|
737 |
this.pointCoords = pointCoords;
|
738 |
this.numCoords = numCoords;
|
739 |
} |
740 |
|
741 |
/**
|
742 |
* TODO: TERMINAR ESTO!!
|
743 |
*/
|
744 |
public void flip() |
745 |
{ |
746 |
byte[] pointTypesAux = new byte[numTypes]; |
747 |
double[] pointCoordsAux = new double[numCoords]; |
748 |
int i;
|
749 |
|
750 |
for (i=0; i< numTypes; i++) |
751 |
pointTypesAux[numTypes - i -1] = pointTypes[i];
|
752 |
int pointIdx = 0; |
753 |
for (i=0; i< numTypes; i++) |
754 |
{ |
755 |
int type = pointTypes[i++];
|
756 |
pointIdx += curvesize[type]; |
757 |
switch (type)
|
758 |
{ |
759 |
case SEG_MOVETO:
|
760 |
break;
|
761 |
case SEG_LINETO:
|
762 |
break;
|
763 |
case SEG_QUADTO:
|
764 |
break;
|
765 |
case SEG_CUBICTO:
|
766 |
break;
|
767 |
|
768 |
} |
769 |
} |
770 |
|
771 |
pointTypes = pointTypesAux; |
772 |
pointCoords = pointCoordsAux; |
773 |
} |
774 |
|
775 |
/**
|
776 |
* Use this function to ensure you get real polygons or holes
|
777 |
* En JTS, con bCCW = false obtienes un pol?gono exterior.
|
778 |
* Nota: Solo se le da la vuelta (si es que lo necesita) al
|
779 |
* pol?gono exterior. El resto, por ahora, no se tocan.
|
780 |
* Si se necesita tenerlos en cuenta, habr?a que mirar
|
781 |
* si est?n dentro del otro, y entonces revisar que tiene
|
782 |
* un CCW contrario al exterior.
|
783 |
* @param bCCW true if you want the GeneralPath in CCW order
|
784 |
* @return true si se le ha dado la vuelta. (true if flipped)
|
785 |
* TODO: TERMINAR ESTO!! NO EST? COMPLETO!! NO sirve para multipoligonos
|
786 |
*/
|
787 |
public boolean ensureOrientation(boolean bCCW) { |
788 |
byte[] pointTypesAux = new byte[numTypes+1]; |
789 |
double[] pointCoordsAux = new double[numCoords+2]; |
790 |
int i;
|
791 |
int pointIdx = 0; |
792 |
|
793 |
Coordinate c1, c2, c3; |
794 |
CoordinateList coordList = new CoordinateList();
|
795 |
CoordinateList firstList = new CoordinateList();
|
796 |
boolean bFirstList = true; |
797 |
Coordinate cInicio = null;
|
798 |
|
799 |
for (i=0; i< numTypes; i++) |
800 |
{ |
801 |
int type = pointTypes[i];
|
802 |
|
803 |
switch (type)
|
804 |
{ |
805 |
case SEG_MOVETO:
|
806 |
c1= new Coordinate(pointCoords[pointIdx], pointCoords[pointIdx+1]); |
807 |
cInicio = c1; |
808 |
coordList.add(c1, true);
|
809 |
if (i>0) bFirstList = false; |
810 |
if (bFirstList)
|
811 |
{ |
812 |
firstList.add(c1,true);
|
813 |
} |
814 |
break;
|
815 |
case SEG_LINETO:
|
816 |
c1= new Coordinate(pointCoords[pointIdx], pointCoords[pointIdx+1]); |
817 |
coordList.add(c1, true);
|
818 |
if (bFirstList)
|
819 |
{ |
820 |
firstList.add(c1,true);
|
821 |
} |
822 |
break;
|
823 |
case SEG_QUADTO:
|
824 |
c1= new Coordinate(pointCoords[pointIdx], pointCoords[pointIdx+1]); |
825 |
coordList.add(c1, true);
|
826 |
c2= new Coordinate(pointCoords[pointIdx+2], pointCoords[pointIdx+3]); |
827 |
coordList.add(c2, true);
|
828 |
if (bFirstList)
|
829 |
{ |
830 |
firstList.add(c1,true);
|
831 |
firstList.add(c2,true);
|
832 |
} |
833 |
|
834 |
break;
|
835 |
case SEG_CUBICTO:
|
836 |
c1= new Coordinate(pointCoords[pointIdx], pointCoords[pointIdx+1]); |
837 |
coordList.add(c1, true);
|
838 |
c2= new Coordinate(pointCoords[pointIdx+2], pointCoords[pointIdx+3]); |
839 |
coordList.add(c2, true);
|
840 |
c3= new Coordinate(pointCoords[pointIdx+4], pointCoords[pointIdx+5]); |
841 |
coordList.add(c3, true);
|
842 |
if (bFirstList)
|
843 |
{ |
844 |
firstList.add(c1,true);
|
845 |
firstList.add(c2,true);
|
846 |
firstList.add(c3,true);
|
847 |
} |
848 |
|
849 |
break;
|
850 |
case SEG_CLOSE:
|
851 |
coordList.add(cInicio, true);
|
852 |
if (bFirstList)
|
853 |
{ |
854 |
firstList.add(cInicio,true);
|
855 |
} |
856 |
break;
|
857 |
|
858 |
} |
859 |
pointIdx += curvesize[type]; |
860 |
} |
861 |
// Guardamos el path dandole la vuelta
|
862 |
Coordinate[] coords = coordList.toCoordinateArray();
|
863 |
boolean bFlipped = false; |
864 |
if (CGAlgorithms.isCCW(coords) != bCCW) // Le damos la vuelta |
865 |
{ |
866 |
CoordinateArraySequence seq = new CoordinateArraySequence(coords);
|
867 |
CoordinateSequences.reverse(seq); |
868 |
coords = seq.toCoordinateArray(); |
869 |
|
870 |
|
871 |
// En el primer punto metemos un moveto
|
872 |
pointCoordsAux[0] = coords[0].x; |
873 |
pointCoordsAux[1] = coords[0].y; |
874 |
pointTypesAux[0] = SEG_MOVETO;
|
875 |
int idx = 2; |
876 |
i=0;
|
877 |
int j=1; |
878 |
for (int k=0; k < coords.length; k++) |
879 |
{ |
880 |
pointCoordsAux[idx++] = coords[k].x; |
881 |
pointCoordsAux[idx++] = coords[k].y; |
882 |
int type = pointTypes[i++];
|
883 |
pointIdx += curvesize[type]; |
884 |
switch (type)
|
885 |
{ |
886 |
case SEG_MOVETO:
|
887 |
pointTypesAux[j] = SEG_LINETO; |
888 |
break;
|
889 |
case SEG_LINETO:
|
890 |
pointTypesAux[j] = SEG_LINETO; |
891 |
break;
|
892 |
case SEG_QUADTO:
|
893 |
pointTypesAux[j] = SEG_QUADTO; |
894 |
break;
|
895 |
case SEG_CUBICTO:
|
896 |
pointTypesAux[j] = SEG_CUBICTO; |
897 |
break;
|
898 |
case SEG_CLOSE:
|
899 |
// TODO: IMPLEMENTAR ESTO!!!
|
900 |
break;
|
901 |
|
902 |
} |
903 |
j++; |
904 |
|
905 |
} |
906 |
|
907 |
pointTypes = pointTypesAux; |
908 |
pointCoords = pointCoordsAux; |
909 |
numCoords= numCoords+2;
|
910 |
numTypes++; |
911 |
bFlipped = true;
|
912 |
|
913 |
} |
914 |
return bFlipped;
|
915 |
} |
916 |
|
917 |
public boolean isCCW() |
918 |
{ |
919 |
int i;
|
920 |
|
921 |
int pointIdx = 0; |
922 |
Coordinate c1; |
923 |
CoordinateList coordList = new CoordinateList();
|
924 |
for (i=0; i< numTypes; i++) |
925 |
{ |
926 |
int type = pointTypes[i++];
|
927 |
pointIdx += curvesize[type]; |
928 |
switch (type)
|
929 |
{ |
930 |
case SEG_MOVETO:
|
931 |
c1= new Coordinate(pointCoords[pointIdx], pointCoords[pointIdx+1]); |
932 |
coordList.add(c1, true);
|
933 |
break;
|
934 |
case SEG_LINETO:
|
935 |
c1= new Coordinate(pointCoords[pointIdx], pointCoords[pointIdx+1]); |
936 |
coordList.add(c1, true);
|
937 |
break;
|
938 |
case SEG_QUADTO:
|
939 |
// TODO: IMPLEMENTAR ESTO!!!
|
940 |
break;
|
941 |
case SEG_CUBICTO:
|
942 |
// TODO: IMPLEMENTAR ESTO!!!
|
943 |
break;
|
944 |
case SEG_CLOSE:
|
945 |
// TODO: IMPLEMENTAR ESTO!!!
|
946 |
break;
|
947 |
|
948 |
} |
949 |
} |
950 |
return CGAlgorithms.isCCW(coordList.toCoordinateArray());
|
951 |
|
952 |
} |
953 |
|
954 |
} |