Java HSV Color to HSB hsvToRGB(float hue, float saturation, float value)

Description

hsv To RGB

License

LGPL

Declaration

public static int hsvToRGB(float hue, float saturation, float value) 

Method Source Code

//package com.java2s;
//License from project: LGPL 

public class Main {
    public static int hsvToRGB(float hue, float saturation, float value) {
        int i = (int) (hue * 6.0F) % 6;
        float f = hue * 6.0F - (float) i;
        float f1 = value * (1.0F - saturation);
        float f2 = value * (1.0F - f * saturation);
        float f3 = value * (1.0F - (1.0F - f) * saturation);
        float f4;
        float f5;
        float f6;

        switch (i) {
        case 0:/*w  w  w  . ja v a 2s  .  com*/
            f4 = value;
            f5 = f3;
            f6 = f1;
            break;

        case 1:
            f4 = f2;
            f5 = value;
            f6 = f1;
            break;

        case 2:
            f4 = f1;
            f5 = value;
            f6 = f3;
            break;

        case 3:
            f4 = f1;
            f5 = f2;
            f6 = value;
            break;

        case 4:
            f4 = f3;
            f5 = f1;
            f6 = value;
            break;

        case 5:
            f4 = value;
            f5 = f1;
            f6 = f2;
            break;

        default:
            throw new RuntimeException("Something went wrong when converting from HSV to RGB. Input was " + hue
                    + ", " + saturation + ", " + value);
        }

        int j = clamp((int) (f4 * 255.0F), 0, 255);
        int k = clamp((int) (f5 * 255.0F), 0, 255);
        int l = clamp((int) (f6 * 255.0F), 0, 255);
        return j << 16 | k << 8 | l;
    }

    /**
     * Returns the value of the first parameter, clamped to be within the lower and upper limits given by the second and
     * third parameters.
     */
    public static int clamp(int num, int min, int max) {
        if (num < min) {
            return min;
        } else {
            return num > max ? max : num;
        }
    }

    /**
     * Returns the value of the first parameter, clamped to be within the lower and upper limits given by the second and
     * third parameters
     */
    public static float clamp(float num, float min, float max) {
        if (num < min) {
            return min;
        } else {
            return num > max ? max : num;
        }
    }

    public static double clamp(double num, double min, double max) {
        if (num < min) {
            return min;
        } else {
            return num > max ? max : num;
        }
    }
}

Related

1. HSVtoRGB(double hue, double saturation, double value)
2. hsvToRgb(double[] hsv)
3. HSVtoRGB(float h, float s, float v)
4. HSVtoRGB(float h, float s, float v, float[] result)
5. hsvToRgb(float h, float s, float v, int[] rgb)
6. hsvToRgb(float hue, float saturation, float value)
7. hsvToRGB(float p_181758_0_, float p_181758_1_, float p_181758_2_)
8. HSVToRGB(float... hsv)
9. HSVtoRGB(float[] hsv, float[] rgb)