Function to get the sector according to given angle

getSectorFromAngle.swift

func sectorFromAngle(angle: Double) -> String {
    var i = 0
    var sector: Sector = Sector(number: -1, color: .empty)
        
    while sector == Sector(number: -1, color: .empty) && i < sectors.count {
        let start: Double = halfSector * Double((i*2 + 1)) - halfSector
        let end: Double = halfSector * Double((i*2 + 3))
            
        if(angle >= start && angle < end) {
            sector = sectors[i]
        }
        i+=1
    }
    return "Sector\n\(sector.number) \(sector.color.rawValue)"
}