Java RGB Color Convert To rgb2hsv(int r, int g, int b)

Description

rgbhsv

License

Open Source License

Declaration

public static float[] rgb2hsv(int r, int g, int b) 

Method Source Code

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

public class Main {
    public static float[] rgb2hsv(int r, int g, int b) {
        float r1 = ((float) r) / 255;
        float g1 = ((float) g) / 255;
        float b1 = ((float) b) / 255;

        float cMax = max(r1, g1, b1);
        float cMin = min(r1, g1, b1);

        float delta = cMax - cMin;

        float h = 0, s = 0, v = 0;

        if (delta == 0) {
            h = 0;//from  w  w  w. j a v  a  2 s.  c o  m
        } else if (cMax == r1) {
            h = 60 * (((g1 - b1) / delta) % 6);
        } else if (cMax == g1) {
            h = 60 * (((b1 - r1) / delta) + 2);
        } else if (cMax == b1) {
            h = 60 * (((r1 - g1) / delta) + 4);
        }

        if (h < 0)
            h += 360;

        if (cMax == 0) {
            s = 0;
        } else {
            s = delta / cMax;
        }

        v = cMax;

        return new float[] { h, s, v };
    }

    private static float max(float... f) {
        float max = Float.MIN_VALUE;
        for (float n : f) {
            if (max < n)
                max = n;
        }
        return max;
    }

    private static float min(float... f) {
        float min = Float.MAX_VALUE;
        for (float n : f) {
            if (min > n)
                min = n;
        }
        return min;
    }
}

Related

1. rgb2Hex(int rgb)
2. rgb2hex(int[] rgb)
3. rgb2hsl(int colour)
4. RGB2HSL(int red, int green, int blue, float[] hslvals)
5. rgb2hsl(int[] rgb)
6. rgb2int(final int[] color)
7. rgb2intval(int r, int g, int b)
8. rgb2lab(int R, int G, int B)
9. rgb2luv(double[] rgb, double[] luv)