/*
* Copyright (c) 2016 Vivid Solutions.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Eclipse Distribution License v. 1.0 which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
*
* http://www.eclipse.org/org/documents/edl-v10.php.
*/
package org.locationtech.jts.precision;
import org.locationtech.jts.geom.Coordinate;
import org.locationtech.jts.geom.CoordinateSequence;
import org.locationtech.jts.geom.CoordinateSequenceFilter;
import org.locationtech.jts.geom.PrecisionModel;
/**
* Reduces the precision of the {@link Coordinate}s in a
* {@link CoordinateSequence} to match the supplied {@link PrecisionModel}.
* Uses {@link PrecisionModel#makePrecise(double)}.
* The input is modified in-place, so
* it should be cloned beforehand if the
* original should not be modified.
*
* @author mbdavis
*
*/
public class CoordinatePrecisionReducerFilter
implements CoordinateSequenceFilter
{
private PrecisionModel precModel;
/**
* Creates a new precision reducer filter.
*
* @param precModel the PrecisionModel to use
*/
public CoordinatePrecisionReducerFilter(PrecisionModel precModel)
{
this.precModel = precModel;
}
/**
* Rounds the Coordinates in the sequence to match the PrecisionModel
*/
public void filter(CoordinateSequence seq, int i)
{
seq.setOrdinate(i, 0, precModel.makePrecise(seq.getOrdinate(i, 0)));
seq.setOrdinate(i, 1, precModel.makePrecise(seq.getOrdinate(i, 1)));
}
/**
* Always runs over all geometry components.
*
* @return false
*/
public boolean isDone() { return false; }
/**
* Always reports that the geometry has changed
*
* @return true
*/
public boolean isGeometryChanged() { return true; }
}