#ifndef HSV
#define HSV

typedef struct {
    double r;       // percent
    double g;       // percent
    double b;       // percent
} rgb;

typedef struct {
    double h;       // angle in degrees
    double s;       // percent
    double v;       // percent
} hsv;

hsv   rgb2hsv(rgb in);
rgb   hsv2rgb(hsv in);

#endif