svn-gvsig-desktop / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / operations / strategies / QueryByRectVisitor.java @ 12099
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| 1 | 1100 | fjp | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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| 2 | *
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| 3 | * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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| 4 | *
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| 5 | * This program is free software; you can redistribute it and/or
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| 6 | * modify it under the terms of the GNU General Public License
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| 7 | * as published by the Free Software Foundation; either version 2
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| 8 | * of the License, or (at your option) any later version.
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| 9 | *
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| 10 | * This program is distributed in the hope that it will be useful,
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | * GNU General Public License for more details.
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| 14 | *
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| 15 | * You should have received a copy of the GNU General Public License
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| 16 | * along with this program; if not, write to the Free Software
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| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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| 18 | *
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| 19 | * For more information, contact:
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| 20 | *
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| 21 | * Generalitat Valenciana
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| 22 | * Conselleria d'Infraestructures i Transport
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| 23 | * Av. Blasco Ib??ez, 50
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| 24 | * 46010 VALENCIA
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| 25 | * SPAIN
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| 26 | *
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| 27 | * +34 963862235
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| 28 | * gvsig@gva.es
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| 29 | * www.gvsig.gva.es
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| 30 | *
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| 31 | * or
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| 32 | *
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| 33 | * IVER T.I. S.A
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| 34 | * Salamanca 50
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| 35 | * 46005 Valencia
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| 36 | * Spain
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| 37 | *
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| 38 | * +34 963163400
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| 39 | * dac@iver.es
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| 40 | */
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| 41 | 235 | vcaballero | package com.iver.cit.gvsig.fmap.operations.strategies; |
| 42 | |||
| 43 | 5317 | fjp | import java.awt.geom.Rectangle2D; |
| 44 | |||
| 45 | import org.cresques.cts.ICoordTrans; |
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| 46 | |||
| 47 | 10627 | caballero | import com.iver.cit.gvsig.exceptions.visitors.ProcessVisitorException; |
| 48 | import com.iver.cit.gvsig.exceptions.visitors.StartVisitorException; |
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| 49 | import com.iver.cit.gvsig.exceptions.visitors.VisitorException; |
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| 50 | 305 | fjp | import com.iver.cit.gvsig.fmap.core.IGeometry; |
| 51 | 683 | fernando | import com.iver.cit.gvsig.fmap.layers.FBitSet; |
| 52 | 562 | fernando | import com.iver.cit.gvsig.fmap.layers.FLayer; |
| 53 | 235 | vcaballero | |
| 54 | |||
| 55 | /**
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| 56 | * Query by Rectangle Visitor.
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| 57 | *
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| 58 | * @author Vicente Caballero Navarro
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| 59 | */
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| 60 | public class QueryByRectVisitor implements FeatureVisitor { |
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| 61 | 1034 | vcaballero | private Rectangle2D rect = null; |
| 62 | private FBitSet bitset = null; |
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| 63 | 990 | fjp | private ICoordTrans ct = null; |
| 64 | 235 | vcaballero | |
| 65 | 1034 | vcaballero | /**
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| 66 | * Inserta el Rect?ngulo para realizar la consulta.
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| 67 | *
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| 68 | * @param r Rect?ngulo para la consulta.
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| 69 | */
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| 70 | public void setRect(Rectangle2D r) { |
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| 71 | rect = r; |
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| 72 | } |
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| 73 | 990 | fjp | |
| 74 | 1034 | vcaballero | /**
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| 75 | * Devuelve un FBitSet como respuesta a la consulta.
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| 76 | *
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| 77 | * @return FBitSet con los ?ndices de los registros de la consulta.
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| 78 | */
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| 79 | public FBitSet getBitSet() {
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| 80 | return bitset;
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| 81 | } |
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| 82 | 235 | vcaballero | |
| 83 | 1034 | vcaballero | /**
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| 84 | * @see com.iver.cit.gvsig.fmap.operations.strategies.FeatureVisitor#visit(com.iver.cit.gvsig.fmap.core.IGeometry,
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| 85 | * int)
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| 86 | */
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| 87 | 10627 | caballero | public void visit(IGeometry g, int index) throws VisitorException, ProcessVisitorException { |
| 88 | 1165 | vcaballero | if (g==null)return; |
| 89 | 1295 | fjp | // Comentamos esto porque la geometry ya viene reproyectada
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| 90 | /* if (ct != null) {
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| 91 | 1034 | vcaballero | g.reProject(ct);
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| 92 | 1295 | fjp | } */
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| 93 | 235 | vcaballero | |
| 94 | 1034 | vcaballero | if (g.intersects(rect)) {
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| 95 | bitset.set(index, true);
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| 96 | } else {
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| 97 | bitset.set(index, false);
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| 98 | } |
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| 99 | } |
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| 100 | 235 | vcaballero | |
| 101 | 562 | fernando | /**
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| 102 | * @see com.iver.cit.gvsig.fmap.operations.strategies.FeatureVisitor#stop(com.iver.cit.gvsig.fmap.layers.FLayer)
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| 103 | */
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| 104 | 10627 | caballero | public void stop(FLayer layer) throws VisitorException { |
| 105 | 562 | fernando | } |
| 106 | 235 | vcaballero | |
| 107 | 562 | fernando | /**
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| 108 | * @see com.iver.cit.gvsig.fmap.operations.strategies.FeatureVisitor#start(com.iver.cit.gvsig.fmap.layers.FLayer)
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| 109 | */
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| 110 | 10627 | caballero | public boolean start(FLayer layer) throws StartVisitorException { |
| 111 | 1034 | vcaballero | bitset = new FBitSet();
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| 112 | 1295 | fjp | // ct = layer.getCoordTrans();
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| 113 | 1034 | vcaballero | |
| 114 | 562 | fernando | return true; |
| 115 | } |
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| 116 | 4311 | azabala | |
| 117 | public String getProcessDescription() { |
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| 118 | return "Selecting geometries that intersects a rectangle"; |
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| 119 | } |
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| 120 | 235 | vcaballero | } |