swift - 将 SKLabelNode 作为 SKShapeNode 的裁剪节点

Question

网上找不到，如何让SKLabelNode裁剪SKShapeNode。当我给背景上色时，我的目标是用同样的方法给标签上色，所以它们必须同时上色。但是无法想象如何用这个标签裁剪 SKShapeNode。请帮助我!

Answer 1

But can't imagine how to crop SKShapeNode with this label.

如果我没理解错的话，你可以将 SKLabelNode 设置为 SKCropNode 的掩码，如下所示:

override func didMoveToView(view: SKView) {

        backgroundColor = .blackColor()

        let cropNode = SKCropNode()
        cropNode.position = CGPoint(x: frame.midX, y: frame.midY)
        cropNode.zPosition = 1

        let mask = SKLabelNode(fontNamed: "ArialMT")
        mask.text = "MASK"
        mask.fontColor = .greenColor()
        mask.fontSize = 28

        cropNode.maskNode = mask


        let nodeToMask = SKSpriteNode(color: .purpleColor(), size: CGSize(width: 200, height: 200))
        nodeToMask.position = CGPoint(x: 0, y: 0)
        nodeToMask.name = "character"
        cropNode.addChild(nodeToMask)
        //Now colorize the sprite which acts like background
        let colorize = SKAction.sequence([
                SKAction.colorizeWithColor(.orangeColor(), colorBlendFactor: 0, duration: 1),
                SKAction.colorizeWithColor(.purpleColor(), colorBlendFactor: 0, duration: 1)
        ])

        nodeToMask.runAction(SKAction.repeatActionForever(colorize), withKey: "colorizing")

        addChild(cropNode)

}

结果: