Created
September 1, 2017 14:35
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CAReplicatorLayer
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| // 1 | |
| let replicatorLayer = CAReplicatorLayer() | |
| replicatorLayer.frame = someView.bounds | |
| // 2 | |
| replicatorLayer.instanceCount = 30 | |
| replicatorLayer.instanceDelay = CFTimeInterval(1 / 30.0) | |
| replicatorLayer.preservesDepth = false | |
| replicatorLayer.instanceColor = UIColor.whiteColor().CGColor | |
| // 3 | |
| replicatorLayer.instanceRedOffset = 0.0 | |
| replicatorLayer.instanceGreenOffset = -0.5 | |
| replicatorLayer.instanceBlueOffset = -0.5 | |
| replicatorLayer.instanceAlphaOffset = 0.0 | |
| // 4 | |
| let angle = Float(M_PI * 2.0) / 30 | |
| replicatorLayer.instanceTransform = CATransform3DMakeRotation(CGFloat(angle), 0.0, 0.0, 1.0) | |
| someView.layer.addSublayer(replicatorLayer) | |
| // 5 | |
| let instanceLayer = CALayer() | |
| let layerWidth: CGFloat = 10.0 | |
| let midX = CGRectGetMidX(someView.bounds) - layerWidth / 2.0 | |
| instanceLayer.frame = CGRect(x: midX, y: 0.0, width: layerWidth, height: layerWidth * 3.0) | |
| instanceLayer.backgroundColor = UIColor.whiteColor().CGColor | |
| replicatorLayer.addSublayer(instanceLayer) | |
| // 6 | |
| let fadeAnimation = CABasicAnimation(keyPath: "opacity") | |
| fadeAnimation.fromValue = 1.0 | |
| fadeAnimation.toValue = 0.0 | |
| fadeAnimation.duration = 1 | |
| fadeAnimation.repeatCount = Float(Int.max) | |
| // 7 | |
| instanceLayer.opacity = 0.0 | |
| instanceLayer.addAnimation(fadeAnimation, forKey: "FadeAnimation") |
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