get Grey Color - Java 2D Graphics

Java examples for 2D Graphics:Color

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Description

get Grey Color

Demo Code

/*/* w  w  w.  j  a va2  s .  com*/
 * (C) Copyright 2000-2011, by Scott Preston and Preston Research LLC
 *
 *  Project Info:  http://www.scottsbots.com
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
import java.awt.Color;
import java.awt.Image;
import java.awt.Point;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.awt.image.renderable.ParameterBlock;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import javax.imageio.ImageIO;
import javax.media.jai.Histogram;
import javax.media.jai.JAI;
import javax.media.jai.PlanarImage;
import com.scottsbots.core.utils.Utils;

public class Main{
    public static void main(String[] argv) throws Exception{
        int c = 2;
        System.out.println(getGrey255(c));
    }
    public static int getGrey255(int c) {
        Color color = new Color(c);
        int r = color.getRed();
        int g = color.getGreen();
        int b = color.getBlue();
        int gray = (int) ((r + g + b) / 3.0);
        return gray;
    }
}

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