[Swift] Wave

水波浪动画效果，可以调节波浪的高度，宽度，ftps等参数。无论大浪小浪都可以轻松创建～

let wave = Wave(frame:CGRectMake(0,0,300,300))

wave.direction = .Left
//wave.direction = .Stop
//wave.direction = .Right

wave.waveHeight = 50
wave.waveWidth  = 100
wave.variance   = 50
wave.fps        = 30

//or use storyboard