KentarouKanno/CALayer.md

## CALayer.md

      
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              CALayer.md
            
          
    CALayer

★ CALayer生成例
let layer = CALayer()
layer.backgroundColor = UIColor.blueColor().CGColor
layer.shadowOffset = CGSizeMake(0, 3)
layer.shadowRadius = 5.0
layer.shadowColor = UIColor.blackColor().CGColor
layer.shadowOpacity = 0.8
layer.frame = CGRectMake(30, 30, 120, 150)
layer.borderColor = UIColor.blackColor().CGColor
layer.borderWidth = 2.0
layer.cornerRadius = 10.0
self.view.layer.addSublayer(layer)
★ position
let view = UIView(frame: CGRectMake(50, 50, 100, 100))

let anchorPoint = view.layer.anchorPoint
//=> CGPoint(0.5, 0.5) Default

view.layer.position = CGPoint(x:100, y: 100)
// position = view.frame.origin + view.frame.size * anchorPoint

view.center = CGPoint(x:100, y: 100)