RGB to HSV - Java 2D Graphics

Java examples for 2D Graphics:Color RGB

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Description

RGB to HSV

Demo Code


//package com.java2s;

public class Main {
    public static double[] RGBtoHSV(double r, double g, double b) {

        double h, s, v;

        double min, max, delta;

        min = Math.min(Math.min(r, g), b);
        max = Math.max(Math.max(r, g), b);

        // V/* www  .  j  a v a 2 s . co  m*/
        v = max;

        delta = max - min;

        // S
        if (max != 0)
            s = delta / max;
        else {
            s = 0;
            h = -1;
            return new double[] { h, s, v };
        }

        // H
        if (r == max)
            h = (g - b) / delta; // between yellow & magenta
        else if (g == max)
            h = 2 + (b - r) / delta; // between cyan & yellow
        else
            h = 4 + (r - g) / delta; // between magenta & cyan

        h *= 60; // degrees

        if (h < 0)
            h += 360;

        h = h * 1.0;
        s = s * 100.0;
        v = (v / 256.0) * 100.0;
        return new double[] { h, s, v };
    }
}

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