Java Color Brighten brighter(Color c, double factor)

Description

Make the color brighter by the specified factor.

License

Open Source License

Parameter

Parameter	Description
c	a color
factor	the smaller the factor, the brighter.

Return

a brighter color

Declaration

private static Color brighter(Color c, double factor) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.awt.*;

public class Main {
    /**/*from w  w  w .j a v  a2  s .c om*/
     * Make the color brighter by the specified factor.
     * <p/>
     * This code is adapted from java.awt.Color to take in a factor.
     * Therefore, it inherits its quirks. Most importantly,
     * a smaller factor makes the color more bright.
     *
     * @param c      a color
     * @param factor the smaller the factor, the brighter.
     * @return a brighter color
     */
    private static Color brighter(Color c, double factor) {
        int r = c.getRed();
        int g = c.getGreen();
        int b = c.getBlue();

        /* 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);
        }
        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));
    }
}

Related

1. brighten(final int cValue, double colorBrigthnessFactor)
2. brighten(float[] rgb, float luminosity)
3. brightenColor(Color color, double factor)
4. brighter(Color c)
5. brighter(Color c)
6. brighter(Color c, double p)
7. brighter(Color col, double FACTOR)
8. brighter(Color color)
9. brighter(Color color)