EmptyIterator.java

/* JAI-Ext - OpenSource Java Advanced Image Extensions Library
 *    http://www.geo-solutions.it/
 *    Copyright 2014 GeoSolutions


 * 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 it.geosolutions.jaiext.utilities.shape;

/**
 * An iterator for empty geometries. This class was ported back and simplified from GeoTools, with permission from the author(s)
 * 
 */
public class EmptyIterator extends AbstractLiteIterator {

    public static final EmptyIterator INSTANCE = new EmptyIterator();

    public int getWindingRule() {
        return WIND_NON_ZERO;
    }

    public boolean isDone() {
        return true;
    }

    public void next() {
        throw new IllegalStateException();
    }

    public int currentSegment(double[] coords) {
        return 0;
    }

    public int currentSegment(float[] coords) {
        return 0;
    }
}