Brightens each of the RGB components of color by the specified factor. - Java 2D Graphics

Java examples for 2D Graphics:Color RGB

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Description

Brightens each of the RGB components of color by the specified factor.

Demo Code

/*//from   ww w  .  j av a2 s  .  c  o m
 * Copyright (c) 2007 BUSINESS OBJECTS SOFTWARE LIMITED
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 *     * Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 *  
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *  
 *     * Neither the name of Business Objects nor the names of its contributors
 *       may be used to endorse or promote products derived from this software
 *       without specific prior written permission.
 *  
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
//package com.java2s;

import java.awt.Color;

public class Main {
    /**
     * Brightens each of the RGB components of color by the specified factor.
     * Note: This is identical to the java.awt.Color.brighten() method, using a variable factor.
     * 
     * @param color color to brighten
     * @param factor luminosity factor; if negative, the color is darkened  
     * @return brightened color
     */
    public static Color brightenColor(Color color, double factor) {
        int r = color.getRed();
        int g = color.getGreen();
        int b = color.getBlue();

        int i = (int) (1.0 / (1.0 - factor));
        if (r == 0 && g == 0 && b == 0) {
            return new Color(i, i, i);
        }

        if (r > 0 && r < i) {
            r = i;
        }
        if (g > 0 && g < i) {
            g = i;
        }
        if (b > 0 && b < i) {
            b = i;
        }

        return new Color(Math.min((int) (r / factor), 255), Math.min(
                (int) (g / factor), 255), Math.min((int) (b / factor), 255));
    }
}

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