add nanoleaf service

internal/color/rgb.go

@@ -35,3 +35,11 @@ func (rgb RGB) ToXY() XY {
 		Y: y / (x + y + z),
 	}
 }
+
+func (rgb RGB) Normalize() (RGB, float64) {
+	hue, sat, value := colorful.Color{R: rgb.Red, G: rgb.Green, B: rgb.Blue}.Hsv()
+	hs := HueSat{Hue: hue, Sat: sat}
+	newRGB := hs.ToRGB()
+
+	return newRGB, value
+}

internal/formattools/asterisks.go

@@ -0,0 +1,11 @@
+package formattools
+
+const firmament = "****************..."
+
+func Asterisks(s string) string {
+	if len(s) < 16 {
+		return firmament[:len(s)]
+	} else {
+		return firmament
+	}
+}