swift_dev25 - 1 year ago 111

iOS Question

I am trying to achieve this aspect for an UITableView : https://www.dropbox.com/s/bcp86myyjgek1kt/Screenshot%202016-11-04%2014.04.14.png?dl=0 and I am stuck.

I followed Atul Manwar's answer :

`func applyZigZagEffect(givenView: UIView) {`

let width = givenView.frame.size.width

let height = givenView.frame.size.height

let givenFrame = givenView.frame

let zigZagWidth = CGFloat(7)

let zigZagHeight = CGFloat(5)

let yInitial = height-zigZagHeight

var zigZagPath = UIBezierPath()

zigZagPath.moveToPoint(CGPointMake(0, 0))

zigZagPath.addLineToPoint(CGPointMake(0, yInitial))

var slope = -1

var x = CGFloat(0)

var i = 0

while x < width {

x = zigZagWidth * CGFloat(i)

let p = zigZagHeight * CGFloat(slope)

let y = yInitial + p

let point = CGPointMake(x, y)

zigZagPath.addLineToPoint(point)

slope = slope*(-1)

i++

}

zigZagPath.addLineToPoint(CGPointMake(width, 0))

var shapeLayer = CAShapeLayer()

shapeLayer.path = zigZagPath.CGPath

givenView.layer.mask = shapeLayer

}

The result is not the one I am looking for, because I only obtain the bottom border: Achieved using Atul's answer and I have no clue how to change it for both borders ( bottom and top ).

Tried with images, but is not scaled correctly, and I find this solution better, but I am not able to produce the effect for top border.

Thanks!

Answer Source

I had been working on your question and this are my results, use this code,

```
func applyZigZagEffect(givenView: UIView) {
let width = givenView.frame.size.width
let height = givenView.frame.size.height
let givenFrame = givenView.frame
let zigZagWidth = CGFloat(7)
let zigZagHeight = CGFloat(5)
var yInitial = height-zigZagHeight
var zigZagPath = UIBezierPath(rect: givenFrame)
zigZagPath.move(to: CGPoint(x:0, y:0))
zigZagPath.addLine(to: CGPoint(x:0, y:yInitial))
var slope = -1
var x = CGFloat(0)
var i = 0
while x < width {
x = zigZagWidth * CGFloat(i)
let p = zigZagHeight * CGFloat(slope)
let y = yInitial + p
let point = CGPoint(x: x, y: y)
zigZagPath.addLine(to: point)
slope = slope*(-1)
i += 1
}
zigZagPath.addLine(to: CGPoint(x:width,y: 0))
yInitial = 0 + zigZagHeight
x = CGFloat(width)
i = 0
while x > 0 {
x = width - (zigZagWidth * CGFloat(i))
let p = zigZagHeight * CGFloat(slope)
let y = yInitial + p
let point = CGPoint(x: x, y: y)
zigZagPath.addLine(to: point)
slope = slope*(-1)
i += 1
}
var shapeLayer = CAShapeLayer()
shapeLayer.path = zigZagPath.cgPath
givenView.layer.mask = shapeLayer
}
```

I hope this helps you, this code works and was tested