/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2004-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.geometry.jts;
import java.awt.geom.AffineTransform;
import com.vividsolutions.jts.geom.Point;
/**
* A path iterator for the LiteShape class, specialized to iterate over Point objects.
*
* @author Andrea Aime
* @source $URL$
*/
public final class PointIterator extends AbstractLiteIterator {
/** Transform applied on the coordinates during iteration */
private AffineTransform at;
/** The point we are going to provide when asked for coordinates */
private Point point;
/** True when the point has been read once */
private boolean done;
/**
* Creates a new PointIterator object.
*
* @param point The point
* @param at The affine transform applied to coordinates during iteration
*/
public PointIterator(Point point, AffineTransform at) {
if (at == null) {
at = new AffineTransform();
}
this.at = at;
this.point = point;
done = false;
}
/**
* Return the winding rule for determining the interior of the path.
*
* @return <code>WIND_EVEN_ODD</code> by default.
*/
public int getWindingRule() {
return WIND_EVEN_ODD;
}
/**
* @see java.awt.geom.PathIterator#next()
*/
public void next() {
done = true;
}
/**
* @see java.awt.geom.PathIterator#isDone()
*/
public boolean isDone() {
return done;
}
/**
* @see java.awt.geom.PathIterator#currentSegment(double[])
*/
public int currentSegment(double[] coords) {
coords[0] = point.getX();
coords[1] = point.getY();
at.transform(coords, 0, coords, 0, 1);
return SEG_MOVETO;
}
}