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!
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
With this method you can get curved zigzag instead of lines
class func pathSemiCirclesPathForView(givenView: UIView, circlesRadius:CGFloat = 4, circlesDistance : CGFloat = 3, top:Bool = true, bottom:Bool = true ) ->UIBezierPath
{
let width = givenView.frame.size.width
let height = givenView.frame.size.height
let semiCircleWidth = CGFloat(circlesRadius*2)
let semiCirclesPath = UIBezierPath()
semiCirclesPath.move(to: CGPoint(x:0, y:0))
if(bottom) {
var x = CGFloat(0)
var i = 0
while x < width {
x = (semiCircleWidth) * CGFloat(i) + (circlesDistance * CGFloat(i))
let pivotPoint = CGPoint(x: x + semiCircleWidth/2, y: height)
semiCirclesPath.addArc(withCenter: pivotPoint, radius: circlesRadius, startAngle: -180 * .pi / 180.0, endAngle: 0 * .pi / 180.0, clockwise: true)
semiCirclesPath.addLine(to: CGPoint(x: semiCirclesPath.currentPoint.x + circlesDistance, y: height))
i += 1
}
}
else {
semiCirclesPath.addLine(to: CGPoint(x: 0, y: height))
semiCirclesPath.addLine(to: CGPoint(x: width, y: height))
}
semiCirclesPath.addLine(to: CGPoint(x:width,y: 0))
if(top) {
var x = CGFloat(width)
var i = 0
while x > 0 {
x = width - (semiCircleWidth) * CGFloat(i) - (circlesDistance * CGFloat(i))
let pivotPoint = CGPoint(x: x - semiCircleWidth/2, y: 0)
semiCirclesPath.addArc(withCenter: pivotPoint, radius: circlesRadius, startAngle: 0 * .pi / 180.0, endAngle: -180 * .pi / 180.0, clockwise: true)
semiCirclesPath.addLine(to: CGPoint(x: semiCirclesPath.currentPoint.x - circlesDistance, y: 0))
i += 1
}
}
semiCirclesPath.close()
return semiCirclesPath
}
RESULTS