swift3 - CATransform3D 关键路径与#keyPath

是否可以使用新的 #keyPath 关键字对 Swift 3 中的 CATransform3D 属性使用增强的键路径(如 here 所述)？

换句话说，要替换

let scaleAnimation = CABasicAnimation(keyPath: "transform.scale")

用类似的东西

let scaleAnimation = CABasicAnimation(keyPath:  #keyPath(CALayer.transform.???))

最佳答案

应该使用 CAValueFunction。

let scaleAnimation = CABasicAnimation(keyPath: "transform.scale")

->

let scaleAnimation = CABasicAnimation(keyPath: #keyPath(CALayer.transform))
scaleAnimation.valueFunction = CAValueFunction(name: kCAValueFunctionScale)

和

let rotationAnimation = CABasicAnimation(keyPath: "transform.rotation")

->

let rotationAnimation = CABasicAnimation(keyPath: #keyPath(CALayer.transform))
rotationAnimation.valueFunction = CAValueFunction(name: kCAValueFunctionRotateZ)

等等。

rotation.x -> kCAValueFunctionRotateX

rotation.y -> kCAValueFunctionRotateY

rotation.z -> kCAValueFunctionRotateZ

rotation -> kCAValueFunctionRotateZ

scale.x -> kCAValueFunctionScaleX

scale.y -> kCAValueFunctionScaleY

scale.z -> kCAValueFunctionScaleZ

scale -> kCAValueFunctionScale

translation.x -> kCAValueFunctionTranslateX

translation.y -> kCAValueFunctionTranslateY

translation.z -> kCAValueFunctionTranslateZ

translation -> kCAValueFunctionTranslate

关于swift3 - CATransform3D 关键路径与#keyPath，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/41102217/