roomplan.swift

roomplan.swift

 override func viewDidLoad() {
        super.viewDidLoad()
        
        if let url = Bundle.main.url(forResource: "Room", withExtension: "json"),
           let jsonData = try? Data(contentsOf: url) {
            readAndTransform(jsonData: jsonData)
          }
    }
    
    struct RoomPlan: Codable {
        let objects: [RoomObject]
        let floors: [Floor]
    }

    struct RoomObject: Codable {
        let dimensions: [Double]
        let transform: [Double]
        let category: [String: CategoryType]
    }

    struct CategoryType: Codable {}

    struct Floor: Codable {
        let dimensions: [Double]
    }

    func readAndTransform(jsonData: Data) {
        let decoder = JSONDecoder()
        do {
            let roomPlan = try decoder.decode(RoomPlan.self, from: jsonData)
            
            guard let floor = roomPlan.floors.first else {
                return
            }
           
            print("Room size: \(floor.dimensions[0]) x \(floor.dimensions[1])")

            let minFloorSide = min(floor.dimensions[0], floor.dimensions[1])
            let scale = 100.0 / minFloorSide // 100 - is constant, minimum size of minimum side of the room

            // In my case - storage, in your cases - tables :)
            for object in roomPlan.objects where object.category.keys.contains("storage") {
                let x = object.transform[12] * scale
                let y = object.transform[13] * scale
                let width = object.dimensions[0] * scale
                let height = object.dimensions[1] * scale
                print("Table: x = \(x), y = \(y), width = \(width), height = \(height)")
            }
        } catch {
            print("Error JSON: \(error)")
        }
    }