Swift开发之CALayer---- Modifying the Layer's Appearance

CALayer的属性一堆，这些都是??，下面就来测试一下各个属性都什么效果～

先建一个基本的洋红色方块

func testLayerProperty(){
        myLayer = CALayer()
        myLayer.frame = CGRectMake(100, 100, 100, 100)
        myLayer.backgroundColor = UIColor.magentaColor().CGColor

        self.view.layer.addSublayer(myLayer)
    }

Swift开发之CALayer---- Modifying the Layer's Appearance