ingo@420: package de.intevation.gnv.utils;
ingo@420:
ingo@420: import com.vividsolutions.jts.geom.Coordinate;
ingo@420: import com.vividsolutions.jts.geom.Point;
ingo@420: import com.vividsolutions.jts.geom.LineString;
ingo@420: import com.vividsolutions.jts.io.ParseException;
ingo@420: import com.vividsolutions.jts.io.WKTReader;
ingo@420:
ingo@420: import de.intevation.gnv.geobackend.base.Result;
ingo@420: import de.intevation.gnv.geobackend.base.query.QueryExecutor;
ingo@420: import de.intevation.gnv.geobackend.base.query.QueryExecutorFactory;
ingo@420: import de.intevation.gnv.geobackend.base.query.exception.QueryException;
sascha@440:
ingo@420: import de.intevation.gnv.math.LinearFunction;
ingo@420:
ingo@420: import java.util.ArrayList;
ingo@420: import java.util.Collection;
ingo@420: import java.util.List;
ingo@420:
ingo@420: import org.apache.commons.math.optimization.OptimizationException;
ingo@420: import org.apache.commons.math.optimization.fitting.CurveFitter;
ingo@420: import org.apache.commons.math.optimization.general.GaussNewtonOptimizer;
ingo@420: import org.apache.commons.math.FunctionEvaluationException;
ingo@420:
ingo@420: import org.apache.log4j.Logger;
ingo@420:
ingo@420: public abstract class WKTUtils {
ingo@420:
ingo@420: private static Logger log = Logger.getLogger(WKTUtils.class);
ingo@420:
ingo@420: public static final double NAUTICAL_MILE = 1852.216d;
ingo@420: public static final double KILOMETER = 1000d;
ingo@420:
ingo@423: public static boolean different(Result a, Result b, int [] indices) {
ingo@420: for (int i = 0; i < indices.length; ++i) {
ingo@420: String oa = a.getString(indices[i]);
ingo@420: String ob = b.getString(indices[i]);
ingo@420:
ingo@420: if (oa == null && ob == null) {
ingo@420: continue;
ingo@420: }
ingo@420:
ingo@420: if (oa == null || ob == null) {
ingo@420: return true;
ingo@420: }
ingo@420:
ingo@420: if (!oa.equals(ob)) {
ingo@420: if (log.isDebugEnabled()) {
ingo@420: log.debug("+++++++++++++++ differs ++++++++++++++");
ingo@420: log.debug(" " + oa + " != " + ob);
ingo@420: }
ingo@420: return true;
ingo@420: }
ingo@420: }
ingo@420: return false;
ingo@420: }
ingo@420:
ingo@420:
ingo@420: public static Coordinate toCoordinate(String shape) {
ingo@420: try {
ingo@420: return ((Point)(new WKTReader().read(shape))).getCoordinate();
ingo@420: }
ingo@420: catch (ParseException pe) {
ingo@420: log.error(pe);
ingo@420: }
ingo@420: return null;
ingo@420: }
ingo@420:
ingo@420:
ingo@420: public static final double toKM(double distance) {
ingo@420: return (distance * NAUTICAL_MILE) / KILOMETER;
ingo@420: }
ingo@420:
ingo@420:
ingo@420: public static String toWKT(Coordinate coordinate) {
ingo@420: StringBuilder sb = new StringBuilder("POINT(");
ingo@420: sb.append(coordinate.x)
ingo@420: .append(' ')
ingo@420: .append(coordinate.y)
ingo@420: .append(')');
ingo@420: return sb.toString();
ingo@420: }
ingo@420:
ingo@420:
ingo@423: public static String worldCoordinatesToIndex(
sascha@440: Coordinate [] coords,
sascha@440: Collection<Result> result,
sascha@440: String meshid,
sascha@440: String ijkQueryID
sascha@440: )
sascha@440: throws QueryException
ingo@420: {
ingo@420: // 1. IJK Anfragen für Stuetzpunkte im Netz ausführen.
ingo@420:
ingo@420: List<java.awt.Point> points = new ArrayList<java.awt.Point>(coords.length);
ingo@420:
ingo@420: QueryExecutor queryExecutor = QueryExecutorFactory
ingo@420: .getInstance()
ingo@420: .getQueryExecutor();
ingo@420:
ingo@420: ArrayList missingPoints = new ArrayList();
ingo@420:
ingo@420: String additionWhere = "FEATUREID=FEATUREID";
ingo@420:
ingo@420: for (int i = 0; i < coords.length; i++) {
ingo@420:
ingo@420: String wkt = toWKT(coords[i]);
ingo@420:
ingo@420: result = queryExecutor.executeQuery(ijkQueryID,
ingo@420: new String[]{meshid,wkt});
ingo@420: if (!result.isEmpty()){
ingo@420: Result resultValue = result.iterator().next();
ingo@420: int iPos = resultValue.getInteger(1);
ingo@420: int jPos = resultValue.getInteger(0);
ingo@420: log.debug("Found Pos "+iPos+"/"+jPos +" for "+wkt);
ingo@420: points.add(i, new java.awt.Point(iPos,jPos));
ingo@420: }else{
ingo@420: log.debug("No i/j Pos found for "+wkt);
ingo@420: missingPoints.add(new Object [] { Integer.valueOf(i), coords[i] });
ingo@420: points.add(i, null);
ingo@420: // Special Case no i,j found for Coordinate
ingo@420: }
ingo@420: }
ingo@420:
ingo@420: if (missingPoints.size() == coords.length) {
ingo@420: log.debug("cannot create index buffer");
ingo@420: }
ingo@420: else { // generate index filter
ingo@420: boolean remainsMissingPoints = !missingPoints.isEmpty();
ingo@420:
ingo@420: if (remainsMissingPoints) {
ingo@420: // try to guess the missing (i, j)
ingo@420: CurveFitter iFitter = new CurveFitter(new GaussNewtonOptimizer(true));
ingo@420: CurveFitter jFitter = new CurveFitter(new GaussNewtonOptimizer(true));
ingo@420:
ingo@420: for (int i = 0, N = points.size(); i < N; ++i) {
ingo@420: java.awt.Point p = (java.awt.Point)points.get(i);
ingo@420: if (p != null) {
ingo@420: Coordinate coord = coords[i];
ingo@420: iFitter.addObservedPoint(coord.x, p.x);
ingo@420: jFitter.addObservedPoint(coord.y, p.y);
ingo@420: }
ingo@420: }
ingo@420: try {
ingo@420: // XXX: Assumption: (i, j) are created by componentwise linear function.
ingo@420: // This is surely not correct because (x, y) are in a ellipsoid projection.
ingo@420: // TODO: use ellipsoid functions and fit with Levenberg Marquardt.
ingo@420: double [] iParams = iFitter.fit(
ingo@420: LinearFunction.INSTANCE, new double [] { 1d, 1d });
ingo@420:
ingo@420: double [] jParams = jFitter.fit(
ingo@420: LinearFunction.INSTANCE, new double [] { 1d, 1d });
ingo@420:
ingo@420: for (int i = missingPoints.size()-1; i >= 0; --i) {
ingo@420: Object [] a = (Object [])missingPoints.get(i);
ingo@420: Coordinate coord = (Coordinate)a[1];
ingo@420: int pi = (int)Math.round(iParams[0]*coord.x + iParams[1]);
ingo@420: int pj = (int)Math.round(jParams[0]*coord.y + jParams[1]);
ingo@420: points.set(
ingo@420: ((Integer)a[0]).intValue(),
ingo@420: new java.awt.Point(pi, pj));
ingo@420: }
ingo@420:
ingo@420: remainsMissingPoints = false; // we filled the gaps
ingo@420: }
ingo@420: catch (FunctionEvaluationException fee) {
ingo@420: log.error(fee);
ingo@420: }
ingo@420: catch (OptimizationException oe) {
ingo@420: log.error(oe);
ingo@420: }
ingo@420: }
ingo@420:
ingo@420: if (!remainsMissingPoints) {
ingo@420: // TODO: Make Tablenames and Columns Configurable
ingo@420: IndexBuffer ib = new IndexBuffer(
ingo@420: points,
ingo@420: "MEDIAN.MESHPOINT.IPOSITION",
ingo@420: "MEDIAN.MESHPOINT.JPOSITION" );
ingo@420: additionWhere = ib.toWhereClause();
ingo@420: log.debug("Additional Where Clause = "+additionWhere);
ingo@420: // 2. Aus diesen Stuetzpunkten den Resultset generieren.
ingo@420: }
ingo@420: } // if generate index filter
ingo@420:
ingo@423: return additionWhere;
ingo@420: }
sascha@440:
sascha@440: public static Coordinate [] toCoordinates(String wkt) {
sascha@440: try {
sascha@440: LineString ls = (LineString)new WKTReader().read(wkt);
sascha@440: return ls.getCoordinates();
sascha@440: }
sascha@440: catch (ParseException pe) {
sascha@440: log.error("cannot read WKT line string", pe);
sascha@440: }
sascha@440: catch (ClassCastException cce) {
sascha@440: log.error("cannot read WKT line string", cce);
sascha@440: }
sascha@440: return null;
sascha@440: }
ingo@420: }