ios Swift 中的 CGPointMake
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CGPointMake in Swift
提问by RaffAl
How to use CGPointMakein Swift? Is there an equivalent for it? I am getting an error:
如何使用CGPointMake的Swift？它有等价物吗？我收到一个错误：
Use of unresolved identifier 'CGPointMake'
使用未解析的标识符“CGPointMake”
Basically, I am trying to assign a position to a Sprite Kit node and cannot figure out how to do it in Swift.
基本上，我正在尝试为 Sprite Kit 节点分配一个位置，但无法弄清楚如何在 Swift 中执行此操作。
class PlayerSpaceship: Spaceship {
func launchMissile() {
var missile = Missile.playerMissile()
// This line gives above mentioned error.
missile.position = CGPointMake(0.0, 0.0)
}
}
回答by Joseph Mark
Use CGPoint(x: Float, y: Float)
用 CGPoint(x: Float, y: Float)
回答by Connor
You call it a little differently, without the make.
你叫它有点不同，没有品牌。
CGPoint(x: 10, y: 20)
回答by mike663
Xcode 6.3.1 shows 4 different Swift initializers for CGPoint. They are:
Xcode 6.3.1 为 CGPoint 展示了 4 种不同的 Swift 初始值设定项。他们是：
CGPoint()
CGPoint(x: CGFloat, y: CGFloat)
CGPoint(x: Double, y: Double)
CGPoint(x: Int, y: Int)
回答by Frank Schaefer
In the code it should looks like this (Xcode 6.1):
在代码中它应该是这样的（Xcode 6.1）：
let point: CGPoint = CGPoint(x:10,y:10)
回答by Frank Schaefer
Or also, you can use CGFloattype for CGPoint
或者，您也可以将CGFloat类型用于 CGPoint
CGPoint(x: CGFloat, y: CGFloat)
