Java HSV Color to HSB hsvToRgb(double hue, double saturation, double value)

Description

Convert a hue, saturation, and value to a float compatible with NIVision.

License

Creative Commons License

Parameter

Parameter	Description
hue	double from 0-1
saturation	double from 0-1
value	double from 0-1

Return

a float based on NIVision.

Declaration

public static float hsvToRgb(double hue, double saturation, double value) 

Method Source Code

//package com.java2s;
//License from project: Creative Commons License 

public class Main {
    /**/*from w  ww.  j a  v  a2  s.co  m*/
     * Convert a hue, saturation, and value to a float compatible with NIVision.
     * @param hue double from 0-1
     * @param saturation double from 0-1
     * @param value double from 0-1
     * @return a float based on NIVision.
     */
    public static float hsvToRgb(double hue, double saturation, double value) {
        int h = (int) (hue * 6);
        double f = hue * 6 - h;
        double p = value * (1 - saturation);
        double q = value * (1 - f * saturation);
        double t = value * (1 - (1 - f) * saturation);

        switch (h) {
        case 0:
            return getColor((int) (value * 256.0), (int) (t * 256.0), (int) (p * 256.0));
        case 1:
            return getColor((int) (q * 256.0), (int) (value * 256.0), (int) (p * 256.0));
        case 2:
            return getColor((int) (p * 256.0), (int) (value * 256.0), (int) (t * 256.0));
        case 3:
            return getColor((int) (p * 256.0), (int) (q * 256.0), (int) (value * 256.0));
        case 4:
            return getColor((int) (t * 256.0), (int) (p * 256.0), (int) (value * 256.0));
        case 5:
            return getColor((int) (value * 256.0), (int) (p * 256.0), (int) (q * 256.0));
        default:
            return getColor(0, 0, 0);
        }
    }

    /**
     * Takes a Red, Green, and Blue value and returns the appropriate float. Maybe
     * @param r Redness
     * @param g Greenness
     * @param b Blueness
     * @return A float
     */
    public static float getColor(int r, int g, int b) {
        if (r < 0) {
            r = 0;
        }
        ;
        if (r > 0xFF) {
            r = 0xFF;
        }
        ; //Limit range for red
        if (g < 0) {
            g = 0;
        }
        ;
        if (g > 0xFF) {
            g = 0xFF;
        }
        ; //Limit range for blue
        if (b < 0) {
            b = 0;
        }
        ;
        if (b > 0xFF) {
            b = 0xFF;
        }
        ; //Limit range for green
        return (float) (0x00000000 + (((int) b) << 16) + (((int) g) << 8) + (((int) r)));
    }
}

Related

1. hsv2rgb(float h, float s, float v)
2. hsv2rgb(float h, float s, float v, float[] rgb)
3. hsv2rgb_hex(float h, float s, float v)
4. hsva(double hue, double saturation, double value, double alpha)
5. HSVToColor(float[] hsv)
6. HSVtoRGB(double hue, double saturation, double value)
7. hsvToRgb(double[] hsv)
8. HSVtoRGB(float h, float s, float v)
9. HSVtoRGB(float h, float s, float v, float[] result)