root / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / core / gt2 / PointIterator.java @ 9284
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| 1 | 2943 | fjp | /*
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| 2 | * Created on 12-may-2005
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| 3 | *
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| 4 | * gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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| 5 | *
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| 6 | * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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| 7 | *
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| 8 | * This program is free software; you can redistribute it and/or
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| 9 | * modify it under the terms of the GNU General Public License
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| 10 | * as published by the Free Software Foundation; either version 2
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| 11 | * of the License, or (at your option) any later version.
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| 12 | *
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| 13 | * This program is distributed in the hope that it will be useful,
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 16 | * GNU General Public License for more details.
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| 17 | *
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| 18 | * You should have received a copy of the GNU General Public License
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| 19 | * along with this program; if not, write to the Free Software
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| 20 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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| 21 | *
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| 22 | * For more information, contact:
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| 23 | *
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| 24 | * Generalitat Valenciana
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| 25 | * Conselleria d'Infraestructures i Transport
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| 26 | * Av. Blasco Ib??ez, 50
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| 27 | * 46010 VALENCIA
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| 28 | * SPAIN
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| 29 | *
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| 30 | * +34 963862235
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| 31 | * gvsig@gva.es
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| 32 | * www.gvsig.gva.es
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| 33 | *
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| 34 | * or
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| 35 | *
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| 36 | * IVER T.I. S.A
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| 37 | * Salamanca 50
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| 38 | * 46005 Valencia
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| 39 | * Spain
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| 40 | *
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| 41 | * +34 963163400
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| 42 | * dac@iver.es
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| 43 | */
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| 44 | package com.iver.cit.gvsig.fmap.core.gt2; |
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| 45 | |||
| 46 | import java.awt.geom.AffineTransform; |
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| 47 | |||
| 48 | import com.vividsolutions.jts.geom.Point; |
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| 49 | |||
| 50 | |||
| 51 | /**
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| 52 | * A path iterator for the LiteShape class, specialized to iterate over Point objects.
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| 53 | *
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| 54 | * @author Andrea Aime
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| 55 | */
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| 56 | public class PointIterator extends AbstractLiteIterator { |
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| 57 | /** Transform applied on the coordinates during iteration */
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| 58 | private AffineTransform at; |
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| 59 | |||
| 60 | /** The point we are going to provide when asked for coordinates */
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| 61 | private Point point; |
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| 62 | |||
| 63 | /** True when the point has been read once */
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| 64 | private boolean done; |
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| 65 | |||
| 66 | |||
| 67 | /**
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| 68 | * Creates a new PointIterator object.
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| 69 | *
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| 70 | * @param p The polygon
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| 71 | * @param at The affine transform applied to coordinates during iteration
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| 72 | */
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| 73 | public PointIterator(Point point, AffineTransform at) { |
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| 74 | if (at == null) { |
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| 75 | at = new AffineTransform(); |
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| 76 | } |
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| 77 | |||
| 78 | this.at = at;
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| 79 | this.point = point;
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| 80 | done = false;
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| 81 | } |
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| 82 | |||
| 83 | /**
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| 84 | * Return the winding rule for determining the interior of the path.
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| 85 | *
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| 86 | * @return <code>WIND_EVEN_ODD</code> by default.
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| 87 | */
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| 88 | public int getWindingRule() { |
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| 89 | return WIND_EVEN_ODD;
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| 90 | } |
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| 91 | |||
| 92 | /**
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| 93 | * @see java.awt.geom.PathIterator#next()
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| 94 | */
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| 95 | public void next() { |
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| 96 | done = true;
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| 97 | } |
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| 98 | |||
| 99 | /**
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| 100 | * @see java.awt.geom.PathIterator#isDone()
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| 101 | */
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| 102 | public boolean isDone() { |
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| 103 | return done;
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| 104 | } |
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| 105 | |||
| 106 | /**
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| 107 | * @see java.awt.geom.PathIterator#currentSegment(double[])
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| 108 | */
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| 109 | public int currentSegment(double[] coords) { |
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| 110 | coords[0] = point.getX();
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| 111 | coords[1] = point.getY();
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| 112 | at.transform(coords, 0, coords, 0, 1); |
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| 113 | |||
| 114 | return SEG_MOVETO;
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| 115 | } |
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| 116 | |||
| 117 | } |