"CAEmitterCell without contents swift" Code Answer's
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CAEmitterCell without contents swift
func createParticles() {
let particleEmitter = CAEmitterLayer()
particleEmitter.emitterPosition = CGPoint(x: view.center.x, y: -96)
particleEmitter.emitterShape = .line
particleEmitter.emitterSize = CGSize(width: view.frame.size.width, height: 1)
let red = makeEmitterCell(color: UIColor.red)
let green = makeEmitterCell(color: UIColor.green)
let blue = makeEmitterCell(color: UIColor.blue)
particleEmitter.emitterCells = [red, green, blue]
view.layer.addSublayer(particleEmitter)
}
func makeEmitterCell(color: UIColor) -> CAEmitterCell {
let cell = CAEmitterCell()
cell.birthRate = 3
cell.lifetime = 7.0
cell.lifetimeRange = 0
cell.color = color.cgColor
cell.velocity = 200
cell.velocityRange = 50
cell.emissionLongitude = CGFloat.pi
cell.emissionRange = CGFloat.pi / 4
cell.spin = 2
cell.spinRange = 3
cell.scaleRange = 0.5
cell.scaleSpeed = -0.05
cell.contents = UIImage(named: "particle_confetti")?.cgImage
return cell
}
Source: www.hackingwithswift.com
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