/*******************************************************************************
* Copyright 2012 University of Southern California
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This code was developed by the Information Integration Group as part
* of the Karma project at the Information Sciences Institute of the
* University of Southern California. For more information, publications,
* and related projects, please see: http://www.isi.edu/integration
******************************************************************************/
package edu.isi.karma.geospatial;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.io.ParseException;
import com.vividsolutions.jts.io.WKTReader;
import org.geotools.factory.Hints;
import org.geotools.geometry.jts.JTS;
import org.geotools.referencing.CRS;
import org.opengis.geometry.MismatchedDimensionException;
import org.opengis.referencing.FactoryException;
import org.opengis.referencing.NoSuchAuthorityCodeException;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
import org.opengis.referencing.operation.MathTransform;
import org.opengis.referencing.operation.TransformException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class SpatialReferenceSystemTransformationUtil {
private static final Logger logger = LoggerFactory
.getLogger(SpatialReferenceSystemTransformationUtil.class);
public SpatialReferenceSystemTransformationUtil() {
}
public static Geometry Transform(Geometry inGeom,
CoordinateReferenceSystem sourceCRS,
CoordinateReferenceSystem targetCRS) {
Hints.putSystemDefault(Hints.FORCE_LONGITUDE_FIRST_AXIS_ORDER,
Boolean.TRUE);
if(sourceCRS.equals(targetCRS))
return inGeom;
MathTransform transform = null;
try {
transform = CRS.findMathTransform(sourceCRS, targetCRS, true);
} catch (FactoryException e) {
logger.error("Cannot find a transformation!", e);
return inGeom;
}
Geometry outGeom = null;
try {
outGeom = JTS.transform(inGeom, transform);
} catch (MismatchedDimensionException e) {
logger.error("Cannot perform the transformation!", e);
return inGeom;
} catch (TransformException e) {
logger.error("Cannot perform the transformation!", e);
return outGeom;
}
return outGeom;
}
public static String Transform(String inGeomWKT, String fromSRID,
String toSRID) {
Hints.putSystemDefault(Hints.FORCE_LONGITUDE_FIRST_AXIS_ORDER,
Boolean.TRUE);
if(fromSRID.equals(toSRID))
return inGeomWKT;
WKTReader reader = new WKTReader();
Geometry JTSGeometry;
try {
JTSGeometry = reader.read(inGeomWKT);
} catch (ParseException e1) {
logger.error("Cannot read the input WKT feature!");
return inGeomWKT;
}
if (!fromSRID.contains(":"))
fromSRID = "EPSG:" + fromSRID;
if (!toSRID.contains(":"))
toSRID = "EPSG:" + toSRID;
CoordinateReferenceSystem sourceCRS = null;
CoordinateReferenceSystem targetCRS = null;
try {
sourceCRS = CRS.decode(fromSRID, true);
targetCRS = CRS.decode(toSRID, true);
} catch (NoSuchAuthorityCodeException e) {
logger.error("Cannot read SRID!", e);
return inGeomWKT;
} catch (FactoryException e) {
logger.error("Cannot read SRID!", e);
return inGeomWKT;
}
MathTransform transform = null;
try {
transform = CRS.findMathTransform(sourceCRS, targetCRS, true);
} catch (FactoryException e) {
logger.error("Cannot find a transformation!", e);
return inGeomWKT;
}
Geometry outGeom = null;
try {
outGeom = JTS.transform(JTSGeometry, transform);
} catch (MismatchedDimensionException e) {
logger.error("Cannot perform the transformation!", e);
return inGeomWKT;
} catch (TransformException e) {
logger.error("Cannot perform the transformation!", e);
return inGeomWKT;
}
return outGeom.toText();
}
}