ValueExtractor.java

/*
 *    Geotoolkit - An Open Source Java GIS Toolkit
 *    http://www.geotoolkit.org
 *
 *    (C) 2009, Geomatys
 *
 *    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.geotoolkit.display2d.ext.isoline.graphic;

import com.vividsolutions.jts.geom.Coordinate;
import java.io.IOException;
import org.geotoolkit.display2d.canvas.RenderingContext2D;
import org.opengis.feature.Feature;

/**
 *
 * @author Johann Sorel (Geomatys)
 * @module
 */
public interface ValueExtractor {

    /**
     * @param feature feature from where data must be extracted.
     * @return an array of 3 values : x,y, value
     */
    Coordinate getValues(RenderingContext2D context, Feature feature) throws IOException;

}