HelloPlane 심볼 예제

LineFactory.swift

import Foundation

class LineFactory {
    static var lineCount : Int = 0
    static func makeLine() -> Line {
        return Line()
    }
    
    class func randomLine() -> Line {
        let line = Line()
        line.pointA.x = Int.random(in: 0...256)
        return line
    }
}

main.swift

import Foundation

var line = LineFactory.makeLine()
line.comment = "JK"
print(line.display())

Shape.swift

import Foundation

enum ColorCode {
    case Black, White, Gray
}

typealias ShapeComment = String

struct Point<T> : CustomStringConvertible{
  var x : T
  var y : T

  var description : String { "Point(x:\(x), y:\(y))" }
}

protocol Shapable {
    func display() -> String
}

extension Shapable {
    func display() -> String {
        return "shapable :: \(self)"
    }
}

class Shape {
    let color : ColorCode
    var comment : ShapeComment
    
    init() {
        color = .Gray
        comment = ""
    }
    
    deinit {        
    }
}

class Line : Shape, CustomStringConvertible, Shapable{
    var pointA : Point<Int>
    var pointB : Point<Int>

    override init() {
        pointA = Point(x:0, y:0)
        pointB = Point(x:10, y:5)
        super.init()
    }

    var description : String { "Line \(color) = \(pointA) -> \(pointB)"}
    
    func moved(vector: Point<Int>) -> (Point<Int>, Point<Int>) {
        let nextA = Point(x: pointA.x + vector.x, y: pointA.y + vector.y)
        let nextB = Point(x: pointB.x + vector.x, y: pointB.y + vector.y)
        return (nextA, nextB)
    }
    
    func center() -> (x:Int, y:Int) {
        return (x: (pointA.x + pointB.x)/2, y: (pointA.y + pointB.y)/2)
    }
}