Question

当我暂停游戏时，我试图模糊一个场景并且我跟随example，但我无法在Swift 2.0中解决这个问题。

许多教程说只是截取屏幕截图，然后将屏幕截图显示为模糊，但我认为这不是一个好主意，我想在没有屏幕截图的情况下模糊视图。

这是我的尝试：

func createlayers() {
    let node = SKEffectNode()
    node.shouldEnableEffects = false
    let filter: CIFilter = CIFilter(name: "CIGaussianBlur", withInputParameters: ["inputRadius" : NSNumber(double:1.0)])!
    node.filter = filter
}

func blurWithCompletion() {
    let duration: CGFloat = 0.5
    scene!.shouldRasterize = true
    scene!.shouldEnableEffects = true
    scene!.runAction(SKAction.customActionWithDuration(0.5, actionBlock: { (node: SKNode, elapsedTime: CGFloat) in
        let radius = (elapsedTime/duration)*10.0
        (node as? SKEffectNode)!.filter!.setValue(radius, forKey: "inputRadius")

    }))
}

func pauseGame()
{
    self.blurWithCompletion()
    self.view!.paused = true 

}

我得到了＃34;致命错误：在打开一个可选值＆＃34时意外地发现了nil;

Answer 1

不需要创建图层方法。使用此更新的blurWithCompletion方法：

    func blurWithCompletion() {
    let duration: CGFloat = 0.5
    let filter: CIFilter = CIFilter(name: "CIGaussianBlur", withInputParameters: ["inputRadius" : NSNumber(double:1.0)])!
    scene!.filter = filter
    scene!.shouldRasterize = true
    scene!.shouldEnableEffects = true
    scene!.runAction(SKAction.customActionWithDuration(0.5, actionBlock: { (node: SKNode, elapsedTime: CGFloat) in
        let radius = (elapsedTime/duration)*10.0
        (node as? SKEffectNode)!.filter!.setValue(radius, forKey: "inputRadius")

    }))
}

如何在Swift 2中模糊场景

1 个答案: