Java Color Brighten HSBtoRGB(float hue, float saturation, float brightness)

Description

Taken from java.awt.Color
Converts the components of a color, as specified by the HSB model, to an equivalent set of values for the default RGB model.

License

Open Source License

Parameter

Parameter	Description
hue	the hue component of the color
saturation	the saturation of the color
brightness	the brightness of the color

Return

the RGB value of the color with the indicated hue, saturation, and brightness.

Declaration

public static int HSBtoRGB(float hue, float saturation, float brightness)

Method Source Code

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

public class Main {
    /**/*from w  w w.j a v a  2s .  c om*/
     * Taken from java.awt.Color<br>
     * 
     * Converts the components of a color, as specified by the HSB model, to an equivalent set of values for the default RGB model.
     * <p>
     * The <code>saturation</code> and <code>brightness</code> components should be floating-point values between zero and one (numbers in
     * the range 0.0-1.0). The <code>hue</code> component can be any floating-point number. The floor of this number is subtracted from it
     * to create a fraction between 0 and 1. This fractional number is then multiplied by 360 to produce the hue angle in the HSB color
     * model.
     * <p>
     * The integer that is returned by <code>HSBtoRGB</code> encodes the value of a color in bits 0-23 of an integer value that is the same
     * format used by the method {@link #getRGB() <code>getRGB</code>}. This integer can be supplied as an argument to the
     * <code>Color</code> constructor that takes a single integer argument.
     * 
     * @param hue
     *            the hue component of the color
     * @param saturation
     *            the saturation of the color
     * @param brightness
     *            the brightness of the color
     * @return the RGB value of the color with the indicated hue, saturation, and brightness.
     * @see java.awt.Color#getRGB()
     * @see java.awt.Color#Color(int)
     * @see java.awt.image.ColorModel#getRGBdefault()
     * @since JDK1.0
     */
    public static int HSBtoRGB(float hue, float saturation, float brightness) {
        int r = 0, g = 0, b = 0;
        if (saturation == 0) {
            r = g = b = (int) (brightness * 255.0f + 0.5f);
        } else {
            float h = (hue - (float) Math.floor(hue)) * 6.0f;
            float f = h - (float) java.lang.Math.floor(h);
            float p = brightness * (1.0f - saturation);
            float q = brightness * (1.0f - saturation * f);
            float t = brightness * (1.0f - (saturation * (1.0f - f)));
            switch ((int) h) {
            case 0:
                r = (int) (brightness * 255.0f + 0.5f);
                g = (int) (t * 255.0f + 0.5f);
                b = (int) (p * 255.0f + 0.5f);
                break;
            case 1:
                r = (int) (q * 255.0f + 0.5f);
                g = (int) (brightness * 255.0f + 0.5f);
                b = (int) (p * 255.0f + 0.5f);
                break;
            case 2:
                r = (int) (p * 255.0f + 0.5f);
                g = (int) (brightness * 255.0f + 0.5f);
                b = (int) (t * 255.0f + 0.5f);
                break;
            case 3:
                r = (int) (p * 255.0f + 0.5f);
                g = (int) (q * 255.0f + 0.5f);
                b = (int) (brightness * 255.0f + 0.5f);
                break;
            case 4:
                r = (int) (t * 255.0f + 0.5f);
                g = (int) (p * 255.0f + 0.5f);
                b = (int) (brightness * 255.0f + 0.5f);
                break;
            case 5:
                r = (int) (brightness * 255.0f + 0.5f);
                g = (int) (p * 255.0f + 0.5f);
                b = (int) (q * 255.0f + 0.5f);
                break;
            }
        }
        return 0x000000ff | (r << 24) | (g << 16) | (b << 8);
    }
}