/*******************************************************************************
* Copyright (c) 2015 Voyager Search and MITRE
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Apache License, Version 2.0 which
* accompanies this distribution and is available at
* http://www.apache.org/licenses/LICENSE-2.0.txt
******************************************************************************/
package org.locationtech.spatial4j.io.jts;
import org.locationtech.spatial4j.context.jts.JtsSpatialContext;
import org.locationtech.spatial4j.context.jts.JtsSpatialContextFactory;
import org.locationtech.spatial4j.distance.DistanceUtils;
import org.locationtech.spatial4j.exception.InvalidShapeException;
import org.locationtech.spatial4j.shape.Shape;
import org.locationtech.spatial4j.shape.jts.JtsPoint;
import org.locationtech.spatial4j.shape.jts.JtsShapeFactory;
import com.vividsolutions.jts.geom.CoordinateSequence;
import com.vividsolutions.jts.geom.CoordinateSequenceFilter;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.io.WKTReader;
import java.text.ParseException;
/**
* This is an extension of Spatial4j's {@link org.locationtech.spatial4j.io.WKTReader} that processes the entire
* string with JTS's {@link com.vividsolutions.jts.io.WKTReader}. Some differences:
* <ul>
* <li>No support for ENVELOPE and BUFFER</li>
* <li>MULTI* shapes use JTS's {@link com.vividsolutions.jts.geom.GeometryCollection} subclasses,
* not {@link org.locationtech.spatial4j.shape.ShapeCollection}</li>
* <li>'Z' coordinates are saved into the geometry</li>
* </ul>
*
*/
@Deprecated
public class JtsWKTReaderShapeParser extends org.locationtech.spatial4j.io.WKTReader {
//Note: Historically, the code here originated from the defunct JtsShapeReadWriter.
public JtsWKTReaderShapeParser(JtsSpatialContext ctx, JtsSpatialContextFactory factory) {
super(ctx, factory);
}
@Override
public Shape parseIfSupported(String wktString) throws ParseException {
return parseIfSupported(wktString, new WKTReader(getShapeFactory().getGeometryFactory()));
}
private JtsShapeFactory getShapeFactory() {
return ((JtsShapeFactory)shapeFactory);
}
/**
* Reads WKT from the {@code str} via JTS's {@link com.vividsolutions.jts.io.WKTReader}.
* @param str
* @param reader <pre>new WKTReader(ctx.getGeometryFactory()))</pre>
* @return Non-Null
*/
protected Shape parseIfSupported(String str, WKTReader reader) throws ParseException {
try {
Geometry geom = reader.read(str);
//Normalizes & verifies coordinates
checkCoordinates(geom);
if (geom instanceof com.vividsolutions.jts.geom.Point) {
com.vividsolutions.jts.geom.Point ptGeom = (com.vividsolutions.jts.geom.Point) geom;
if (getShapeFactory().useJtsPoint())
return new JtsPoint(ptGeom, (JtsSpatialContext) ctx);
else
return getShapeFactory().pointXY(ptGeom.getX(), ptGeom.getY());
} else if (geom.isRectangle()) {
return getShapeFactory().makeRectFromRectangularPoly(geom);
} else {
return getShapeFactory().makeShapeFromGeometry(geom);
}
} catch (InvalidShapeException e) {
throw e;
} catch (Exception e) {
throw new InvalidShapeException("error reading WKT: "+e.toString(), e);
}
}
protected void checkCoordinates(Geometry geom) {
// note: JTS WKTReader has already normalized coords with the JTS PrecisionModel.
geom.apply(new CoordinateSequenceFilter() {
boolean changed = false;
@Override
public void filter(CoordinateSequence seq, int i) {
double x = seq.getX(i);
double y = seq.getY(i);
//Note: we don't simply call ctx.normX & normY because
// those methods use the precisionModel, but WKTReader already
// used the precisionModel. It's be nice to turn that off somehow but alas.
if (ctx.isGeo() && ctx.isNormWrapLongitude()) {
double xNorm = DistanceUtils.normLonDEG(x);
if (Double.compare(x, xNorm) != 0) {//handles NaN
changed = true;
seq.setOrdinate(i, CoordinateSequence.X, xNorm);
}
// double yNorm = DistanceUtils.normLatDEG(y);
// if (y != yNorm) {
// changed = true;
// seq.setOrdinate(i,CoordinateSequence.Y,yNorm);
// }
}
ctx.verifyX(x);
ctx.verifyY(y);
}
@Override
public boolean isDone() { return false; }
@Override
public boolean isGeometryChanged() { return changed; }
});
}
}