/*
 * Copyright (c) 2007, 2017 Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package org.jemmy.image.pixel;

import org.jemmy.Dimension;

/**
 *
 * @author shura
 */
public class MaxDistanceComparator extends ThresholdComparator{

    /**
     *
     * @param threshold 
     */
    public MaxDistanceComparator(double threshold) {
        super(0, Math.sqrt(3));
        setThreshold(threshold);
    }

    /**
     *
     * @param image1
     * @param image2
     * @return
     */
    public boolean compare(Raster image1, Raster image2) {
        Dimension size = PixelImageComparator.computeDiffSize(image1, image2);
        if (size == null) {
            return false;
        }
        double[] colors1 = new double[image1.getSupported().length];
        double[] colors2 = new double[image2.getSupported().length];
        double distance = 0;
        for (int x = 0; x < size.width; x++) {
            for (int y = 0; y < size.height; y++) {
                image1.getColors(x, y, colors1);
                image2.getColors(x, y, colors2);
                distance = Math.max(distance, AverageDistanceComparator.distance(image1.getSupported(), colors1, image2.getSupported(), colors2));
            }
        }
        return distance <= getThreshold();
    }

    /**
     *
     * @return
     */
    public String getID() {
        return MaxDistanceComparator.class.getName() + ":" + getThreshold();
    }
}