fadeOpacity(by:duration:)
Creates an action that adjusts the opacity of a node by a relative value.
Declaration
class func fadeOpacity(by factor: CGFloat, duration sec: TimeInterval) -> SCNActionParameters
- factor:
The amount to change the node’s opacity by.
- sec:
The duration, in seconds, of the animation.
Return Value
A new action object.
Discussion
When the action executes, the node’s opacity property animates to its new value.
This action is reversible; the reverse is created as if the following code had been executed:
[SCNAction fadeOpacityBy: -factor duration: sec];