大佬教程收集整理的这篇文章主要介绍了ios – CAEmitterCell – 慢星或光效，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
我怎么能用CAEmitterCell做到这一点？
谢谢 ：)
@H_675_17@//set ref to the layer starsEmitter = (CAEmitterLayer*)self.layer; //2 //configure the emitter layer starsEmitter.emitterPosition = CGPointMake(160,240); starsEmitter.emitterSize = CGSizeMake(self.superview.bounds.size.width,self.superview.bounds.size.height); NSLog(@"width = %f,height = %f",starsEmitter.emitterSize.width,starsEmitter.emitterSize.height); starsEmitter.renderMode = kCAEmitterLayerPoints; starsEmitter.emitterShape = kCAEmitterLayerRectangle; starsEmitter.emitterMode = kCAEmitterLayerUnordered; CAEmitterCell* stars = [CAEmitterCell emitterCell]; stars.birthRate = 0; stars.lifetime = 10; stars.lifetimeRange = 0.5; stars.color = [[UIColor colorWithRed:255 green:255 blue:255 alpha:0] CGColor]; stars.contents = (id)[[UIImage imagenamed:@"particle.png"] CGImage]; stars.veLocityRange = 500; stars.emissionRange = 360; stars.scale = 0.2; stars.scaleRange = 0.1; stars.alphaRange = 0.3; stars.alphaSpeed = 0.5; [stars setName:@"stars"]; //add the cell to the layer and we're done starsEmitter.emitterCells = [NSArray arrayWithObject:stars];
我将示例项目@L_772_11@到GitHub：SimpleCAEmitterLayer
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