Commit a8a08f98 authored by santiaago's avatar santiaago
Browse files

add PickIndex function

parent e466122c

draw/tools.go

+12 −0
Original line number Diff line number Diff line
@@ -60,3 +60,15 @@ func PickColor(key string, colors []color.RGBA, index int) color.RGBA { 
	}

	return colors[0]

}



func PickIndex(key string, n int, index int) int {

	s := hex.EncodeToString([]byte{key[index]})

	if r, err := strconv.ParseInt(s, 16, 0); err == nil {

		for i := 0; i < n; i++ {

			if int(r)%n == i {

				return i

			}

		}

	}

	return 0

}