Compute a color in between the two given colors - Java 2D Graphics

Java examples for 2D Graphics:Color

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Description

Compute a color in between the two given colors

Demo Code

/*/*from   ww  w  .j  a v  a2s .  c o m*/
 * A Collection of Miscellaneous Utilities
 *
 * Copyright 2010
 *      The President and Fellows of Harvard College.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 * 3. Neither the name of the University 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 UNIVERSITY 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 UNIVERSITY 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 CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 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.*;

public class Main {
    /**
     * Compute a color in between the two given colors
     * 
     * @param color1 the first color
     * @param color2 the second color
     * @param weight where in between (0 = color1, 1 = color2)
     * @return the color in between color1 and color2
     */
    public static Color getColorInBetween(Color color1, Color color2,
            double weight) {

        int r1 = color1.getRed();
        int g1 = color1.getGreen();
        int b1 = color1.getBlue();

        int r2 = color2.getRed();
        int g2 = color2.getGreen();
        int b2 = color2.getBlue();

        int r3 = (int) Math.round(r1 + weight * (r2 - r1));
        int g3 = (int) Math.round(g1 + weight * (g2 - g1));
        int b3 = (int) Math.round(b1 + weight * (b2 - b1));

        return new Color(r3, g3, b3);
    }
}

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