svn-gvsig-desktop / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / operations / strategies / QueryByRectVisitor.java @ 6507
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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.operations.strategies; |
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import java.awt.geom.Rectangle2D; |
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import org.cresques.cts.ICoordTrans; |
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import com.iver.cit.gvsig.fmap.core.IGeometry; |
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import com.iver.cit.gvsig.fmap.layers.FBitSet; |
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import com.iver.cit.gvsig.fmap.layers.FLayer; |
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/**
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* Query by Rectangle Visitor.
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*
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* @author Vicente Caballero Navarro
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*/
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public class QueryByRectVisitor implements FeatureVisitor { |
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private Rectangle2D rect = null; |
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private FBitSet bitset = null; |
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private ICoordTrans ct = null; |
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/**
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* Inserta el Rect?ngulo para realizar la consulta.
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*
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* @param r Rect?ngulo para la consulta.
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*/
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public void setRect(Rectangle2D r) { |
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rect = r; |
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} |
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/**
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* Devuelve un FBitSet como respuesta a la consulta.
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*
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* @return FBitSet con los ?ndices de los registros de la consulta.
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*/
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public FBitSet getBitSet() {
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return bitset;
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} |
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/**
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* @see com.iver.cit.gvsig.fmap.operations.strategies.FeatureVisitor#visit(com.iver.cit.gvsig.fmap.core.IGeometry,
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* int)
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*/
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public void visit(IGeometry g, int index) { |
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if (g==null)return; |
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// Comentamos esto porque la geometry ya viene reproyectada
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/* if (ct != null) {
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g.reProject(ct);
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} */
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if (g.intersects(rect)) {
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bitset.set(index, true);
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} else {
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bitset.set(index, false);
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} |
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} |
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/**
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* @see com.iver.cit.gvsig.fmap.operations.strategies.FeatureVisitor#stop(com.iver.cit.gvsig.fmap.layers.FLayer)
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*/
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public void stop(FLayer layer) { |
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} |
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/**
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* @see com.iver.cit.gvsig.fmap.operations.strategies.FeatureVisitor#start(com.iver.cit.gvsig.fmap.layers.FLayer)
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*/
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public boolean start(FLayer layer) { |
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bitset = new FBitSet();
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// ct = layer.getCoordTrans();
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return true; |
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} |
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public String getProcessDescription() { |
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return "Selecting geometries that intersects a rectangle"; |
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} |
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} |