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OC与Swift两种实现方式基本上区别不大，主要是在一些对象或方法的调用方式不同
OC代码样式：
self.view.backgroundColor = [UIColor blackColor];
//加载颗粒状的火花图片
CAEmitterLayer *emitterLa = [CAEmitterLayer layer];
emitterLa.emitterPosition = CGPointMake(self.view.bounds.size.width/2, self.view.bounds.size.height*(.75));//*(0.75)
emitterLa.renderMode = kCAEmitterLayerAdditive;
//在爆炸前逐渐隐藏发射颗粒
CAEmitterCell *emitterCeRocket = [CAEmitterCell emitterCell];
emitterCeRocket.emissionLongitude = -M_PI/2;
emitterCeRocket.emissionLatitude = 0;
emitterCeRocket.lifetime = 1.6;
emitterCeRocket.birthRate = 1;
emitterCeRocket.velocity = 400;
emitterCeRocket.velocityRange = 100;
emitterCeRocket.yAcceleration = 250;
emitterCeRocket.emissionRange = M_PI/4;
emitterCeRocket.color = CGColorCreateCopy([UIColor colorWithRed:0.5 green:0.5 blue:0.5 alpha:0.5].CGColor);
emitterCeRocket.redRange = 0.5;
emitterCeRocket.greenRange = 0.5;
emitterCeRocket.blueRange = 0.5;
//设置动画效果的路径名称
[emitterCeRocket setName:@"rocket"];
//添加路径状态
CAEmitterCell *emitterCeFly = [CAEmitterCell emitterCell];
emitterCeFly.contents = (id)[UIImage imageNamed:@"tspark.png"].CGImage;
emitterCeFly.emissionLongitude = (4*M_PI)/2;
emitterCeFly.scale = 0.4;
emitterCeFly.velocity = 100;
emitterCeFly.birthRate = 45;
emitterCeFly.lifetime = 1.5;
emitterCeFly.yAcceleration = 350;
emitterCeFly.emissionRange = M_PI/7;
emitterCeFly.alphaSpeed = -0.7;
emitterCeFly.scaleSpeed = -0.1;
emitterCeFly.scaleRange = 0.1;
emitterCeFly.beginTime = 0.01;
emitterCeFly.duration = 0.7;
//设置爆炸
CAEmitterCell *emitterCeFirework = [CAEmitterCell emitterCell];
emitterCeFirework.contents = (id)[UIImage imageNamed:@"tspark.png"].CGImage;
emitterCeFirework.birthRate = 9999;
emitterCeFirework.scale = 0.6;
emitterCeFirework.velocity = 130;
emitterCeFirework.lifetime = 2;
emitterCeFirework.alphaSpeed = -0.2;
emitterCeFirework.yAcceleration = 80;
emitterCeFirework.beginTime = 1.5;
emitterCeFirework.duration = 0.1;
emitterCeFirework.emissionRange = 2*M_PI;
emitterCeFirework.scaleSpeed = -0.1;
emitterCeFirework.spin = 2;
//设置爆炸动画名称
[emitterCeFirework setName:@"firework"];
//添加重复过程
CAEmitterCell *emitterCePreSpark = [CAEmitterCell emitterCell];
emitterCePreSpark.birthRate = 80;
emitterCePreSpark.velocity = emitterCeFirework.velocity*0.7;
emitterCePreSpark.lifetime = 1.7;
emitterCePreSpark.yAcceleration = emitterCeFirework.yAcceleration*0.85;
emitterCePreSpark.beginTime = emitterCeFirework.beginTime-0.2;
emitterCePreSpark.emissionRange = emitterCeFirework.emissionRange;
emitterCePreSpark.greenSpeed = 100;
emitterCePreSpark.blueSpeed = 100;
emitterCePreSpark.redSpeed = 100;
//设置重复动画名称
[emitterCePreSpark setName:@"preSpark"];
//烟花最后的闪光
CAEmitterCell *emitterCeSparkle = [CAEmitterCell emitterCell];
emitterCeSparkle.contents = (id)[UIImage imageNamed:@"tspark.png"].CGImage;
emitterCeSparkle.lifetime = 0.05;
emitterCeSparkle.yAcceleration = 250;
emitterCeSparkle.beginTime = 0.8;
emitterCeSparkle.scale = 0.4;
emitterCeSparkle.birthRate = 10;
emitterCePreSpark.emitterCells = [NSArray arrayWithObjects:emitterCeSparkle, nil];
emitterCeRocket.emitterCells = [NSArray arrayWithObjects:emitterCeFly,emitterCeFirework,emitterCePreSpark, nil];
emitterLa.emitterCells = [NSArray arrayWithObjects:emitterCeRocket, nil];
[self.view.layer addSublayer:emitterLa];
Swift的代码样式:
self.view.backgroundColor = UIColor.blackColor();
//加载颗粒状的火花图片
let emitterLa = CAEmitterLayer();
emitterLa.emitterPosition = CGPointMake(self.view.bounds.size.width/2, self.view.bounds.size.height*0.75);
emitterLa.renderMode = kCAEmitterLayerAdditive;
//爆炸前逐渐隐藏发射颗粒
let emitterCeRocket = CAEmitterCell();
emitterCeRocket.emissionLongitude = CGFloat(-M_PI_2);
emitterCeRocket.emissionLatitude = 0;
emitterCeRocket.lifetime = 1.6;
emitterCeRocket.birthRate = 1;
emitterCeRocket.velocity = 400;
emitterCeRocket.velocityRange = 100;
emitterCeRocket.yAcceleration = 250;
emitterCeRocket.emissionRange = CGFloat(M_PI/4);
emitterCeRocket.color = CGColorCreateCopy(UIColor(red: 0.5, green:0.5, blue:0.5, alpha:0.5).CGColor);
emitterCeRocket.redRange = 0.5;
emitterCeRocket.greenRange = 0.5;
emitterCeRocket.blueRange = 0.5;
//设置动画效果的路径名称
emitterCeRocket.name = "rocket";
//添加路径状态
let emitterCeFly = CAEmitterCell();
emitterCeFly.contents = UIImage(named: "tspark.png")!.CGImage;
emitterCeFly.emissionLongitude = CGFloat((4*M_PI)/2);
emitterCeFly.scale = 0.4;
emitterCeFly.velocity = 100;
emitterCeFly.birthRate = 45;
emitterCeFly.lifetime = 1.5;
emitterCeFly.yAcceleration = 350;
emitterCeFly.emissionRange = CGFloat(M_PI/7);
emitterCeFly.alphaSpeed = -0.7;
emitterCeFly.scaleSpeed = -0.1;
emitterCeFly.scaleRange = 0.1;
emitterCeFly.beginTime = 0.01;
emitterCeFly.duration = 0.7;
//设置爆炸
let emitterCeFirework = CAEmitterCell();
emitterCeFirework.contents = UIImage(named: "tspark.png")!.CGImage;
emitterCeFirework.birthRate = 9999;
emitterCeFirework.scale = 0.6;
emitterCeFirework.velocity = 130;
emitterCeFirework.lifetime = 2;
emitterCeFirework.alphaSpeed = -0.2;
emitterCeFirework.yAcceleration = 80;
emitterCeFirework.beginTime = 1.5;
emitterCeFirework.duration = 0.1;
emitterCeFirework.emissionRange = CGFloat(2*M_PI);
emitterCeFirework.scaleSpeed = -0.1;
emitterCeFirework.spin = 2;
//设置爆炸动画名称
emitterCeFirework.name = "firework";
//添加重复过程
let emitterCePreSpark = CAEmitterCell();
emitterCePreSpark.birthRate = 80;
emitterCePreSpark.velocity = emitterCeFirework.velocity*0.7;
emitterCePreSpark.lifetime = 1.7;
emitterCePreSpark.yAcceleration = emitterCeFirework.yAcceleration*0.85;
emitterCePreSpark.beginTime = emitterCeFirework.beginTime-0.2;
emitterCePreSpark.emissionRange = emitterCeFirework.emissionRange;
emitterCePreSpark.greenSpeed = 100;
emitterCePreSpark.blueSpeed = 100;
emitterCePreSpark.redSpeed = 100;
//设置重复动画名称
emitterCePreSpark.name = "preSpark";
//烟花最后的闪光
let emitterCeSparkle = CAEmitterCell();
emitterCeSparkle.contents = UIImage(named: "tspark.png")!.CGImage;
emitterCeSparkle.lifetime = 0.05;
emitterCeSparkle.yAcceleration = 250;
emitterCeSparkle.beginTime = 0.8;
emitterCeSparkle.scale = 0.4;
emitterCeSparkle.birthRate = 10;
emitterCePreSpark.emitterCells = NSArray.init(objects:emitterCeSparkle) as? [CAEmitterCell];
emitterCeRocket.emitterCells = NSArray.init(objects:emitterCeFly,emitterCeFirework,emitterCePreSpark) as? [CAEmitterCell];
emitterLa.emitterCells = NSArray.init(objects: emitterCeRocket) as? [CAEmitterCell];
self.view.layer.addSublayer(emitterLa);
效果图:
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原文地址：http://blog.csdn.net/hbblzjy/article/details/51997442
