svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libGeocoding / src / org / gvsig / geocoding / geommatches / MatcherUtils.java @ 28375
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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/*
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* AUTHORS (In addition to CIT):
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* 2008 Prodevelop S.L. main development
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*/
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package org.gvsig.geocoding.geommatches; |
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import java.awt.geom.PathIterator; |
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import java.util.ArrayList; |
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import java.util.HashMap; |
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import java.util.Iterator; |
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import java.util.LinkedList; |
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import java.util.List; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.feature.Feature; |
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import org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.fmap.geom.GeometryLocator; |
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import org.gvsig.fmap.geom.exception.CreateGeometryException; |
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import org.gvsig.fmap.geom.primitive.Point; |
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import org.gvsig.fmap.geom.util.Converter; |
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import org.gvsig.fmap.geom.util.UtilFunctions; |
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import org.gvsig.geocoding.result.DissolveResult; |
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import org.gvsig.geocoding.result.ScoredFeature; |
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import org.gvsig.geocoding.result.impl.DefaultDissolveResult; |
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import org.gvsig.tools.locator.LocatorException; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import com.vividsolutions.jts.geom.Coordinate; |
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import com.vividsolutions.jts.linearref.LengthIndexedLine; |
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import com.vividsolutions.jts.operation.overlay.OverlayOp; |
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/**
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* This class has the utilities to work with geometries and search the geocoding
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* point
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*
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* @author <a href="mailto:jsanz@prodevelop.es"> Jorge Gaspar Sanz Salinas</a>
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* @author <a href="mailto:vsanjaime@prodevelop.es"> Vicente Sanjaime Calvet</a>
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*/
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public class MatcherUtils { |
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private static final Logger log = LoggerFactory |
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.getLogger(MatcherUtils.class); |
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public static final String LINES = "LINES"; |
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public static final String POLYS = "POLYS"; |
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/**
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* Get internal point from one polygon geometry
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*
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* @param geomGV
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* @return
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*/
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public static Point internalPointGeometry(Geometry geomGV) { |
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if (geomGV != null) { |
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com.vividsolutions.jts.geom.Geometry geomJTS = Converter |
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.geometryToJts(geomGV); |
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if (geomJTS != null) { |
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com.vividsolutions.jts.geom.Point pto = geomJTS |
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.getInteriorPoint(); |
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if (pto != null) { |
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return getPoint(pto.getX(), pto.getY());
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} |
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} |
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} |
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return null; |
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} |
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/**
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* parse geometries of gvSIG model to JTS model
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*
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* @param geoms
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* list of gvSIG geometries
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* @return list of JTS geometries
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*/
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public static List<com.vividsolutions.jts.geom.Geometry> parseGeomsGVToJTS( |
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List<Geometry> geoms) {
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List<com.vividsolutions.jts.geom.Geometry> list = new ArrayList<com.vividsolutions.jts.geom.Geometry>(); |
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if (geoms != null && geoms.size() > 0) { |
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com.vividsolutions.jts.geom.Geometry ge = null;
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for (Geometry geometry : geoms) {
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ge = Converter.geometryToJts(geometry); |
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list.add(ge); |
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} |
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} |
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return list;
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} |
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/**
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* parse a list of gvSIG geometries to JTS geometries
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*
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* @param geoms
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* list gvSIG geometries to JTS geometries
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* @return
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*/
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public static List<Geometry> parseGeomsJTSToGV( |
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List<com.vividsolutions.jts.geom.Geometry> geoms) {
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List<Geometry> list = new ArrayList<Geometry>(); |
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if (geoms != null && geoms.size() > 0) { |
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for (com.vividsolutions.jts.geom.Geometry geometry : geoms) {
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list.add(Converter.jtsToGeometry(geometry)); |
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} |
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} |
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return list;
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} |
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/**
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* This method intersect two lines and return the intersection point. If
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* result is null, two lines doesn't intersect
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*
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* @param geom1Jts
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* @param geom2Jts
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* @return
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*/
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public static Point intersectTwoLinesJTS( |
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com.vividsolutions.jts.geom.Geometry geom1Jts, |
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com.vividsolutions.jts.geom.Geometry geom2Jts) {
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com.vividsolutions.jts.geom.Geometry interBBoxJTS = null;
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com.vividsolutions.jts.geom.Geometry geomPointJTS = null;
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if (geom1Jts != null && geom2Jts != null) { |
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interBBoxJTS = OverlayOp.overlayOp(geom1Jts.getEnvelope(), geom2Jts |
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.getEnvelope(), OverlayOp.INTERSECTION); |
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if (interBBoxJTS.getGeometryType().compareTo("LineString") == 0 |
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|| interBBoxJTS.getGeometryType().compareTo("Polygon") == 0) { |
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log.debug("Intersect: Intersect two BBOX");
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geomPointJTS = OverlayOp.overlayOp(geom1Jts, geom2Jts, |
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OverlayOp.INTERSECTION); |
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if (geomPointJTS.getGeometryType().compareTo("Point") == 0) { |
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log.debug("Intersect: Intersect in the point X= "
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+ geomPointJTS.getCoordinate().x + " Y= "
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+ geomPointJTS.getCoordinate().y); |
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Point pto = getPoint(geomPointJTS.getCoordinate().x,
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geomPointJTS.getCoordinate().y); |
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return pto;
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} else {
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log.debug("Intersect: Two lines don't intersect");
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return null; |
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} |
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} else {
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log.debug("Intersect: Two BBOX don't intersect");
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return null; |
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} |
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} |
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log.debug("Some Geometries are NULL ......");
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return null; |
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} |
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/**
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* This method does the union the geometries (Features) with a attribute
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* common
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*
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* @param sFeats
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* @param geomType
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* LINES, POLYS
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* @return
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* @throws DataException
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*/
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public static List<DissolveResult> dissolveGeomsJTS( |
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List<ScoredFeature> sFeats, String geomType) throws DataException { |
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List<DissolveResult> results = new ArrayList<DissolveResult>(); |
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// None elements
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if (sFeats.size() == 0) { |
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return results;
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} |
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// Only one element
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else if (sFeats.size() == 1) { |
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DissolveResult result = new DefaultDissolveResult();
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Feature feat = null;
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try {
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feat = sFeats.get(0).getFeature();
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result.setGeom(feat.getDefaultGeometry()); |
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List<ScoredFeature> list = new ArrayList<ScoredFeature>(); |
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list.add(sFeats.get(0));
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result.setScoredFeatures(list); |
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results.add(result); |
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} catch (DataException e) {
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log.debug("Error getting the feature", e);
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} |
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return results;
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} |
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// more elements
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else {
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LinkedList<ScoredFeature> list = new LinkedList<ScoredFeature>(); |
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com.vividsolutions.jts.geom.Geometry geo1, geo2; |
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for (ScoredFeature scoredFeature : sFeats) {
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list.add(scoredFeature); |
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} |
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// Iterate over the linked list
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while (list.size() > 0) { |
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// Remove the first element of the list
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ScoredFeature sFeat = list.poll(); |
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// create first dissolve result and add it to the list
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DissolveResult result = new DefaultDissolveResult();
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ArrayList<ScoredFeature> dissolveList = new ArrayList<ScoredFeature>(); |
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dissolveList.add(sFeat); |
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geo1 = Converter.geometryToJts(sFeat.getFeature() |
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.getDefaultGeometry()); |
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ScoredFeature touchingSFeat = null;
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// LINES
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if (geomType.compareTo(LINES) == 0) { |
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touchingSFeat = getFirstLineTouchingSF(geo1, list); |
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} |
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// POLYS
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if (geomType.compareTo(POLYS) == 0) { |
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touchingSFeat = getFirstPolyTouchingSF(geo1, list); |
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} |
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while (touchingSFeat != null) { |
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list.remove(touchingSFeat); |
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geo2 = Converter.geometryToJts(touchingSFeat.getFeature() |
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.getDefaultGeometry()); |
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geo1 = OverlayOp.overlayOp(geo1, geo2, OverlayOp.UNION); |
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dissolveList.add(touchingSFeat); |
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touchingSFeat = getFirstLineTouchingSF(geo1, list); |
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} |
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result.setJTSGeom(geo1); |
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result.setScoredFeatures(dissolveList); |
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results.add(result); |
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} |
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} |
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return results;
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} |
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/**
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* Get first line of the list that it is touching the in geometry
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*
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* @param geometry
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* @param list
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* @return
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* @throws DataException
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*/
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private static ScoredFeature getFirstLineTouchingSF( |
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com.vividsolutions.jts.geom.Geometry geometry, |
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LinkedList<ScoredFeature> list) throws DataException { |
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com.vividsolutions.jts.geom.Geometry geo2; |
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for (ScoredFeature listedSF : list) {
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geo2 = Converter.geometryToJts(listedSF.getFeature() |
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.getDefaultGeometry()); |
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if (geometry.touches(geo2))
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return listedSF;
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} |
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return null; |
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} |
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/**
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* Get first poly of the list that it is touching the in geometry
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*
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* @param geometry
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* @param list
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* @return
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* @throws DataException
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*/
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private static ScoredFeature getFirstPolyTouchingSF( |
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com.vividsolutions.jts.geom.Geometry geometry, |
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LinkedList<ScoredFeature> list) throws DataException { |
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com.vividsolutions.jts.geom.Geometry geo2; |
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com.vividsolutions.jts.geom.Geometry geo3; |
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for (ScoredFeature listedSF : list) {
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geo2 = Converter.geometryToJts(listedSF.getFeature() |
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.getDefaultGeometry()); |
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geo3 = geometry.intersection(geo2); |
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for (int i = 0; i < geo3.getNumGeometries(); i++) { |
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int dim = geo3.getGeometryN(i).getDimension();
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if (dim == 1) { |
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return listedSF;
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} |
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} |
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} |
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return null; |
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} |
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/**
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* This method group geometries to one attribute
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*
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* @param desc
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* @param features
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* @return
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*/
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public static HashMap<String, List<ScoredFeature>> groupScoredFeaturesByAttribute( |
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String desc, List<ScoredFeature> features) { |
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HashMap<String, List<ScoredFeature>> groups = new HashMap<String, List<ScoredFeature>>(); |
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Iterator<ScoredFeature> it = features.iterator();
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// Go for all geometries of the collection
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while (it.hasNext()) {
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// Get feature
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ScoredFeature sFeat = (ScoredFeature) it.next(); |
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Feature feat = null;
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try {
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feat = sFeat.getFeature(); |
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String key = feat.get(desc).toString();
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// Store the geometries for attribute in the List
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boolean contiene = groups.containsKey(key);
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if (!contiene) {
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List<ScoredFeature> featss = new ArrayList<ScoredFeature>(); |
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featss.add(sFeat); |
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groups.put(key, featss); |
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} else {
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((List<ScoredFeature>) groups.get(key)).add(sFeat);
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} |
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} catch (DataException e) {
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log.debug("Error clustering element", e);
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continue;
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} |
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} |
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return groups;
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} |
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/**
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* Calculate the position inside single line from distance
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*
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* @param geomJTS
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* @param distance
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* @return
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*/
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public static Point getLinePositionFromDistance( |
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com.vividsolutions.jts.geom.Geometry geomJTS, double distance) {
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if (geomJTS != null) { |
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LengthIndexedLine lenline = new LengthIndexedLine(geomJTS);
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if (distance < 0) { |
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distance = 0.0;
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} |
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if (distance > geomJTS.getLength()) {
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distance = geomJTS.getLength(); |
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} |
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if (lenline.isValidIndex(distance)) {
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Coordinate coors = lenline.extractPoint(distance); |
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return getPoint(coors.x, coors.y);
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} |
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} |
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return null; |
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} |
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/**
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* Calculate the position inside single line from relative distance
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*
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* @param geomJTS
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* @param distance
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* @return
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*/
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public static Point getLinePositionFromRelativeDistance( |
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com.vividsolutions.jts.geom.Geometry geomJTS, int relative) {
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if (geomJTS != null) { |
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double totaldistance = geomJTS.getLength();
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LengthIndexedLine lenline = new LengthIndexedLine(geomJTS);
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Coordinate coors = null;
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if (relative < 0) { |
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coors = lenline.extractPoint(0);
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return getPoint(coors.x, coors.y);
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} else if (relative <= 100 && relative >= 0) { |
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double dist = (relative * totaldistance) / 100.0; |
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coors = lenline.extractPoint(dist); |
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return getPoint(coors.x, coors.y);
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} else {
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coors = lenline.extractPoint(totaldistance); |
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return getPoint(coors.x, coors.y);
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} |
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} |
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return null; |
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} |
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/**
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* This method calculates a point perpendicular to the line at a distance
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*
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* @param inicio
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* @param fin
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* @param linePoint
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* @param dist
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* @return
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*/
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public static Point getPerpendicularPointFromLine(Point inicio, Point fin, |
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Point linePoint, double dist) { |
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java.awt.geom.Point2D pto1 = new java.awt.geom.Point2D.Double(inicio
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.getX(), inicio.getY()); |
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java.awt.geom.Point2D pto2 = new java.awt.geom.Point2D.Double(fin
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.getX(), fin.getY()); |
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java.awt.geom.Point2D perpPoint = new java.awt.geom.Point2D.Double(
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linePoint.getX(), linePoint.getY()); |
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java.awt.geom.Point2D[] p = UtilFunctions.getPerpendicular(pto1, pto2,
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perpPoint); |
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java.awt.geom.Point2D unit = UtilFunctions.getUnitVector(p[0], p[1]); |
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java.awt.geom.Point2D res = new java.awt.geom.Point2D.Double(perpPoint
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.getX() |
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+ (unit.getX() * dist), perpPoint.getY() + (unit.getY() * dist)); |
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return getPoint(res.getX(), res.getY());
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} |
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/**
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* Calculate the position in the line with offset
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*
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* @param geoms
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* @param linePoint
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* @param dist
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* @return
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*/
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public static Point getOffsetPosition(Geometry[] geoms, Point linePoint, |
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double dist) {
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for (int j = 0; j < geoms.length; j++) { |
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double[] coords = new double[6]; |
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Point inicio = null; |
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Point fin = null; |
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boolean inter = geoms[j].intersects(linePoint.getBounds2D());
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if (inter) {
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PathIterator iter = geoms[j].getGeneralPath().getPathIterator(
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null);
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iter.currentSegment(coords); |
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inicio = getPoint(coords[0], coords[1]); |
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iter.next(); |
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iter.currentSegment(coords); |
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fin = getPoint(coords[0], coords[1]); |
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log.debug("Return point with offset");
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return MatcherUtils.getPerpendicularPointFromLine(inicio, fin,
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linePoint, dist); |
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} |
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} |
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log.debug("Return original point without offset");
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return linePoint;
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} |
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/**
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* get geometry dimension
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*
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* @param geom
|
| 488 |
* @return
|
| 489 |
*/
|
| 490 |
public static int getGeometryDimension(Geometry geom) { |
| 491 |
com.vividsolutions.jts.geom.Geometry geomJTS = Converter |
| 492 |
.geometryToJts(geom); |
| 493 |
return geomJTS.getDimension();
|
| 494 |
} |
| 495 |
|
| 496 |
/**
|
| 497 |
* Get point 2D from x and y coordinates
|
| 498 |
*
|
| 499 |
* @param x
|
| 500 |
* @param y
|
| 501 |
* @return
|
| 502 |
*/
|
| 503 |
public static Point getPoint(double x, double y) { |
| 504 |
Point pto = null; |
| 505 |
try {
|
| 506 |
pto = GeometryLocator.getGeometryManager().createPoint(x, y, |
| 507 |
Geometry.SUBTYPES.GEOM2D); |
| 508 |
} catch (LocatorException e) {
|
| 509 |
log.error("Error getting the geometry locator", e);
|
| 510 |
return null; |
| 511 |
} catch (CreateGeometryException e) {
|
| 512 |
log.error("Error creating geometry", e);
|
| 513 |
return null; |
| 514 |
} |
| 515 |
return pto;
|
| 516 |
} |
| 517 |
|
| 518 |
} |