Created
December 29, 2018 06:11
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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,53 @@ let emitterLayer = CAEmitterLayer() emitterLayer.frame = navigationView.bounds emitterLayer.renderMode = .additive emitterLayer.emitterMode = .outline emitterLayer.emitterShape = .line emitterLayer.emitterSize = CGSize(width: 50, height: 0) emitterLayer.emitterPosition = CGPoint(x: navigationView.bounds.width / 2, y: navigationView.bounds.height) emitterLayer.velocity = 1 emitterLayer.seed = (arc4random() % 100) + 1 navigationView.layer.insertSublayer(emitterLayer, at: 0) let cell = CAEmitterCell() cell.contents = UIImage(named: "triangle1")?.cgImage cell.birthRate = 1 cell.emissionRange = 0.11 * CGFloat.pi cell.velocity = 100 cell.velocityRange = 150 cell.yAcceleration = 75 cell.lifetime = 2.04 cell.scale = 0.2 cell.color = UIColor(red: 0.5, green: 0.5, blue: 0.5, alpha: 1).cgColor cell.greenRange = 1 cell.redRange = 1 cell.blueRange = 1 cell.spinRange = CGFloat.pi let burst = CAEmitterCell() burst.birthRate = 1 burst.velocity = 0 burst.scale = 2.5 burst.redSpeed = -1.5 burst.blueSpeed = 1.5 burst.greenSpeed = 1 burst.lifetime = 0.35 let spark = CAEmitterCell() spark.birthRate = 400 spark.velocity = 125 spark.emissionRange = 2 * CGFloat.pi spark.yAcceleration = 75 spark.lifetime = 3 spark.contents = UIImage(named: "triangle2")?.cgImage spark.scaleSpeed = -0.2 spark.greenSpeed = -0.1 spark.redSpeed = 0.4 spark.blueSpeed = -0.1 spark.alphaSpeed = -0.25 spark.spin = 2 * CGFloat.pi spark.spinRange = 2 * CGFloat.pi burst.emitterCells = [spark] cell.emitterCells = [burst] emitterLayer.emitterCells = [cell]