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Encapsulated animation code into functions.

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This commit is contained in:
vinivendra 2016-02-12 00:44:04 -05:00
parent 60cef2b4e2
commit 6ce21cc573
1 changed files with 14 additions and 4 deletions
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18
PixelImage/ViewController.swift
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@ -14,6 +14,8 @@ class ViewController: UIViewController, MetaballDataSource {
var selectedMetaball: Metaball?
let edgeAnimationDuration: Float = 1
override func viewDidLoad() {
super.viewDidLoad()
@ -43,17 +45,25 @@ class ViewController: UIViewController, MetaballDataSource {
metaballView.addSubview(metaball)
}
let parameters = EdgeAnimationParameters(startDate: NSDate(), duration: 1, fadeIn: true, i: 0, j: 2)
NSTimer.scheduledTimerWithTimeInterval(1.0/60.0, target: self, selector: "animateEdgeWithTimer:", userInfo: parameters, repeats: true)
addEdge(0, 2)
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, Int64(2) * Int64(NSEC_PER_SEC)), dispatch_get_main_queue()) { () -> Void in
let parameters2 = EdgeAnimationParameters(startDate: NSDate(), duration: 1, fadeIn: false, i: 0, j: 2)
NSTimer.scheduledTimerWithTimeInterval(1.0/60.0, target: self, selector: "animateEdgeWithTimer:", userInfo: parameters2, repeats: true)
self.removeEdge(0, 2)
}
renderer.state = .Running
}
func addEdge(i: Int, _ j: Int) {
let parameters = EdgeAnimationParameters(startDate: NSDate(), duration: edgeAnimationDuration, fadeIn: true, i: i, j: j)
NSTimer.scheduledTimerWithTimeInterval(1.0/60.0, target: self, selector: "animateEdgeWithTimer:", userInfo: parameters, repeats: true)
}
func removeEdge(i: Int, _ j: Int) {
let parameters = EdgeAnimationParameters(startDate: NSDate(), duration: edgeAnimationDuration, fadeIn: false, i: i, j: j)
NSTimer.scheduledTimerWithTimeInterval(1.0/60.0, target: self, selector: "animateEdgeWithTimer:", userInfo: parameters, repeats: true)
}
func animateEdge(withTimer timer: NSTimer) {
let (animationStart, duration, fadeIn, i, j) = (timer.userInfo as! EdgeAnimationParameters).unpack()