hsb, hsba, uicolor

Convert UIColor to HSBA values.swift

func getHSBA(color:UIColor) -> (hue:CGFloat, saturation:CGFloat, brightness:CGFloat, alpha:CGFloat) {
    var hue:CGFloat = 0.0
    var sat:CGFloat = 0.0
    var bri:CGFloat = 0.0
    var alpha:CGFloat = 0.0
    color.getHue(&hue, saturation: &sat, brightness: &bri, alpha: &alpha)
    return (hue:hue, saturation:sat, brightness:bri, alpha:alpha)
}