Creates a new Color that is a brighter version of this Color. - Java 2D Graphics

Java examples for 2D Graphics:Color

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Description

Creates a new Color that is a brighter version of this Color.

Demo Code

/*/*from   ww  w . ja v  a  2s  .  c o m*/

Copyright (c) 2015-2016, cheminfo

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 */
//package com.java2s;
import java.awt.Color;

public class Main {
    /**
     * Creates a new <code>Color</code> that is a brighter version of this
     * <code>Color</code>. This is a addPasteHandler of Color.brighter(), but lets you choose
     * the factor.
     * @param c the color to be brightened
     * @param factor value < 1.0; Color.brighter() uses 0.7
     * @return     a new <code>Color</code> object that is
     *                 a brighter version of this <code>Color</code>
     *                 with the same {@code alpha} value.
     */
    public static Color brighter(Color c, float factor) {
        int r = c.getRed();
        int g = c.getGreen();
        int b = c.getBlue();
        int alpha = c.getAlpha();

        /* From 2D group:
         * 1. black.brighter() should return grey
         * 2. applying brighter to blue will always return blue, brighter
         * 3. non pure color (non zero rgb) will eventually return white
         */
        int i = (int) (1.0 / (1.0 - factor));
        if (r == 0 && g == 0 && b == 0) {
            return new Color(i, i, i, alpha);
        }
        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), alpha);
    }
}

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