/* Copyright 2013 The jeo project. All rights reserved.
*
* 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.
*/
package io.jeo.proj;
import org.osgeo.proj4j.CoordinateTransform;
import org.osgeo.proj4j.ProjCoordinate;
import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.CoordinateFilter;
import com.vividsolutions.jts.geom.CoordinateSequence;
import com.vividsolutions.jts.geom.CoordinateSequenceFilter;
/**
* Applies a coordinate transform to the coordinates of a geometry object.
* <p>
* This class isn't intended to be used directly but rather through {@link Proj#reproject()}}.
* </p>
* @see Proj#reproject(com.vividsolutions.jts.geom.Geometry, org.osgeo.proj4j.CoordinateReferenceSystem, org.osgeo.proj4j.CoordinateReferenceSystem)
*/
public class CoordinateTransformer implements CoordinateSequenceFilter, CoordinateFilter {
CoordinateTransform tx;
public CoordinateTransformer(CoordinateTransform tx) {
this.tx = tx;
}
@Override
public void filter(CoordinateSequence cs, int i) {
ProjCoordinate p = new ProjCoordinate(cs.getX(i), cs.getY(i));
tx.transform(p, p);
cs.setOrdinate(i, 0, p.x);
cs.setOrdinate(i, 1, p.y);
}
@Override
public void filter(Coordinate coord) {
ProjCoordinate p = new ProjCoordinate(coord.x, coord.y);
tx.transform(p, p);
coord.x = p.x;
coord.y = p.y;
}
@Override
public boolean isDone() {
return false;
}
@Override
public boolean isGeometryChanged() {
return true;
}
}