CALayer可动画属性

本文主要是介绍CALayer可动画属性，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

这些属性用于CAAnimation中的KeyPath设置.
(摘自官方文档, 方便查询.)

表一 CALayer中可以进行动画的属性列表以及它们的默认动画

Property	Default animation
anchorPoint	Uses the default implied CABasicAnimation object, described in Table B-2.
backgroundColor	Uses the default implied CABasicAnimation object, described in Table B-2.
backgroundFilters	Uses the default implied CATransition object, described in Table B-3. Sub-properties of the filters are animated using the default implied CABasicAnimation object, described in Table B-2.
borderColor	Uses the default implied CABasicAnimation object, described in Table B-2.
borderWidth	Uses the default implied CABasicAnimation object, described in Table B-2.
bounds	Uses the default implied CABasicAnimation object, described in Table B-2.
compositingFilter	Uses the default implied CATransition object, described in Table B-3. Sub-properties of the filters are animated using the default implied CABasicAnimation object, described in Table B-2.
contents	Uses the default implied CABasicAnimation object, described in Table B-2.
contentsRect	Uses the default implied CABasicAnimation object, described in Table B-2.
cornerRadius	Uses the default implied CABasicAnimation object, described in Table B-2.
doubleSided	There is no default implied animation.
filters	Uses the default implied CABasicAnimation object, described in Table B-2. Sub-properties of the filters are animated using the default implied CABasicAnimation object, described in Table B-2.
frame	This property is not animatable. You can achieve the same results by animating the bounds and position properties.
hidden	Uses the default implied CABasicAnimation object, described in Table B-2.
mask	Uses the default implied CABasicAnimation object, described in Table B-2.
masksToBounds	Uses the default implied CABasicAnimation object, described in Table B-2.
opacity	Uses the default implied CABasicAnimation object, described in Table B-2.
position	Uses the default implied CABasicAnimation object, described in Table B-2.
shadowColor	Uses the default implied CABasicAnimation object, described in Table B-2.
shadowOffset	Uses the default implied CABasicAnimation object, described in Table B-2.
shadowOpacity	Uses the default implied CABasicAnimation object, described in Table B-2.
shadowPath	Uses the default implied CABasicAnimation object, described in Table B-2.
shadowRadius	Uses the default implied CABasicAnimation object, described in Table B-2.
sublayers	Uses the default implied CABasicAnimation object, described in Table B-2.
sublayerTransform	Uses the default implied CABasicAnimation object, described in Table B-2.
transform	Uses the default implied CABasicAnimation object, described in Table B-2.
zPosition	Uses the default implied CABasicAnimation object, described in Table B-2.

表二: transform属性内的KeyPath

Field Key Path	Description
rotation.x	Set to an NSNumber object whose value is the rotation, in radians, in the x axis.
rotation.y	Set to an NSNumber object whose value is the rotation, in radians, in the y axis.
rotation.z	Set to an NSNumber object whose value is the rotation, in radians, in the z axis.
rotation	Set to an NSNumber object whose value is the rotation, in radians, in the z axis. This field is identical to setting the rotation.z field.
scale.x	Set to an NSNumber object whose value is the scale factor for the x axis.
scale.y	Set to an NSNumber object whose value is the scale factor for the y axis.
scale.z	Set to an NSNumber object whose value is the scale factor for the z axis.
scale	Set to an NSNumber object whose value is the average of all three scale factors.
translation.x	Set to an NSNumber object whose value is the translation factor along the x axis.
translation.y	Set to an NSNumber object whose value is the translation factor along the y axis.
translation.z	Set to an NSNumber object whose value is the translation factor along the z axis.
translation	Set to an NSValue object containing an NSSize or CGSize data type. That data type indicates the amount to translate in the x and y axis.

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