Xmas receiver mathematical insights

[bulligan]

I should have mentioned that you could find the encoder in the source of https://phyphox.org/xmas-generator-2021.html (it's plain uncompressed javascript). That's likely much easier to read than the phyphox file format…

Hello, sorry again, i dont quite understand this part of the code: 

function hue2index(h, s, v) {
        if (s < 0.5) {
            return 7; //White
        } else {
            if (h < 0.083333333) {
                return 3; //red
            } else if (h < 0.25) {
                return 4; //yellow
            } else if (h < 0.416666667) {
                return 5; //green
            } else if (h < 0.583333333) {
                return 6; //cyan
            } else if (h < 0.75) {
                return 1; //blue
            } else if (h < 0.916666667) {
                return 2; //magenta
            } else {
                return 3; //red (again)
            }

Mainly i dont understand where 0.0833333, 0.4166666 .... come from. Thanks in advance