how to draw UIBezierPaths swift - ios

Here's what I want to do:
with help UIBezierPath i want draw mask like on this link
// Create an image context containing the original UIImage.
let maskWithHole = CAShapeLayer()
let biggerRect = CGRect(x: 0, y: 0, width: withSize.width, height: withSize.height)
let maskPath = UIBezierPath() //UIBezierPath(roundedRect: toRectArray.first!, cornerRadius: 40)
maskPath.move(to: CGPoint(x: biggerRect.minX, y: biggerRect.minY))
maskPath.addLine(to: CGPoint(x: biggerRect.minX, y: biggerRect.maxY))
maskPath.addLine(to: CGPoint(x: biggerRect.maxX, y: biggerRect.maxY))
maskPath.addLine(to: CGPoint(x: biggerRect.maxX, y: biggerRect.minY))
maskPath.addLine(to: CGPoint(x: biggerRect.minX, y: biggerRect.minY))
let smallerRect = CGRect(x: 10, y: 10, width: withSize.width - 10, height: withSize.height - 10)
maskPath.move(to: CGPoint(x: smallerRect.minX, y: smallerRect.minY))
maskPath.addLine(to: CGPoint(x: smallerRect.minX, y: smallerRect.maxY))
maskPath.addLine(to: CGPoint(x: smallerRect.maxX, y: smallerRect.maxY))
maskPath.addLine(to: CGPoint(x: smallerRect.maxX, y: smallerRect.minY))
maskPath.addLine(to: CGPoint(x: smallerRect.minX, y: smallerRect.minY))
maskWithHole.path = maskPath.cgPath
maskWithHole.fillRule = kCAFillRuleEvenOdd
maskWithHole.fillColor = UIColor.orange.cgColor
maskWithHole.opacity = 1.0
it's work i cut inside content of image but want round rect inside when cut like link image.

Related

How to set Corner Radius to UIBezierPath

I have created following image by UIBezierPath using this code
//// Bezier Drawing
let bezierPath = UIBezierPath()
bezierPath.move(to: CGPoint(x: 360, y: 0))
bezierPath.addCurve(to: CGPoint(x: 360, y: 75), controlPoint1: CGPoint(x: 359.53, y: 30.5), controlPoint2: CGPoint(x: 359.91, y: 55.45))
bezierPath.addCurve(to: CGPoint(x: 360, y: 153.78), controlPoint1: CGPoint(x: 360.35, y: 153.21), controlPoint2: CGPoint(x: 360, y: 153.78))
bezierPath.addCurve(to: CGPoint(x: 180, y: 153.78), controlPoint1: CGPoint(x: 360, y: 153.78), controlPoint2: CGPoint(x: 271.2, y: 212.77))
bezierPath.addCurve(to: CGPoint(x: 0, y: 153.78), controlPoint1: CGPoint(x: 88.8, y: 94.8), controlPoint2: CGPoint(x: 0, y: 153.78))
bezierPath.addLine(to: CGPoint(x: 0, y: 0))
bezierPath.addLine(to: CGPoint(x: 360, y: 0))
UIColor.green.setFill()
bezierPath.fill()
now i want to give corner radius to TopLeft and TopRight of this following Image using Slider.
I have Tried Following code but it did not works for me.
var cornerPath = path
cornerPath = UIBezierPath(roundedRect:self.imgTop.bounds,
byRoundingCorners:[.topLeft, .topRight],
cornerRadii: CGSize(width: CGFloat(cornerRadius),
height: CGFloat(cornerRadius)))
path.lineWidth = 1.0
let maskLayer = CAShapeLayer()
maskLayer.path = cornerPath.cgPath
self.imgTop.layer.mask = maskLayer
let maskLayerTop = CAShapeLayer()
maskLayerTop.fillColor = UIColor.white.cgColor
maskLayerTop.backgroundColor = UIColor.clear.cgColor
maskLayerTop.path = pathTop?.cgPath
maskLayerTop.cornerRadius = CGFloat(cornerRadius)
//maskLayerTop.masksToBounds = true
maskLayerTop.shadowRadius = CGFloat(cornerRadius)
maskLayerTop.fillColor = UIColor.green.cgColor
maskLayerTop.shadowColor = UIColor.blue.cgColor
imgTop.layer.mask = maskLayerTop
I had also tried to applying corner radius to Image view but it did not work.i want corner radius like following image.
Please Help!
.
.
NOTE: I had already create one path to create following Image
before your let bezierPath = UIBezierPath() for curve add
var = cornerRadiudSize = CGSize(width: 50.0, height: 50.0) //this is your global variable that you can change based on the slider and then draw
let p = UIBezierPath(roundedRect: rect, byRoundingCorners: .allCorners, cornerRadii: cornerRadiudSize)
p.addClip()
PS: Instead of all corner set the corners you want
IOS 14, swift 5 version
let bezierPath = UIBezierPath(roundedRect: shareContainerView.bounds, byRoundingCorners: [.topLeft, .topRight], cornerRadii: CGSize(width: 4, height: 4))
let maskLayer = CAShapeLayer()
maskLayer.path = bezierPath.cgPath
shareContainerView.layer.mask = maskLayer

All four corner of a view having different radius

How do i design a UIView whose all 4 corners have different corner radius. So, UIView with its top right corner radius of 20, top left corner radius of 30, bottom left corner radius of 10 and bottom right corner radius of 20
I want to add different cornerRadius to Viw Container shown in image.
using UIBEZIER method cuts off the share comment and like portion.
viw Container is pinned to cell
You can use this UIView extension. It will create and apply a mask layer according to your radius values.
extension UIView {
func applyRadiusMaskFor(topLeft: CGFloat = 0, bottomLeft: CGFloat = 0, bottomRight: CGFloat = 0, topRight: CGFloat = 0) {
let path = UIBezierPath()
path.move(to: CGPoint(x: bounds.width - topRight, y: 0))
path.addLine(to: CGPoint(x: topLeft, y: 0))
path.addQuadCurve(to: CGPoint(x: 0, y: topLeft), controlPoint: .zero)
path.addLine(to: CGPoint(x: 0, y: bounds.height - bottomLeft))
path.addQuadCurve(to: CGPoint(x: bottomLeft, y: bounds.height), controlPoint: CGPoint(x: 0, y: bounds.height))
path.addLine(to: CGPoint(x: bounds.width - bottomRight, y: bounds.height))
path.addQuadCurve(to: CGPoint(x: bounds.width, y: bounds.height - bottomRight), controlPoint: CGPoint(x: bounds.width, y: bounds.height))
path.addLine(to: CGPoint(x: bounds.width, y: topRight))
path.addQuadCurve(to: CGPoint(x: bounds.width - topRight, y: 0), controlPoint: CGPoint(x: bounds.width, y: 0))
let shape = CAShapeLayer()
shape.path = path.cgPath
layer.mask = shape
}
}
Example usage:
let view = UIView(frame: CGRect(x: 0, y: 0, width: 200, height: 200))
view.backgroundColor = .red
view.applyRadiusMaskFor(topLeft: 80, bottomLeft: 40, bottomRight: 30, topRight: 60)
Result: Radius applied image

UIView with UIBezierPath with reversing path

I am trying to give some mask at bottom view using UIBezierPath with addCurve() method.
Expected Result
Current Output
What I have tried is:
viewHeader.backgroundColor = headerColor
let path = UIBezierPath()
let cpoint1 = CGPoint(x: 80, y: 160)
let cpoint2 = CGPoint(x: 280, y: viewHeader.Height + 50)
path.move(to:.init(x: 0, y: viewHeader.Height + 10))
path.addCurve(to: .init(x: viewHeader.Width, y: 205), controlPoint1: cpoint1, controlPoint2: cpoint2)
let shapeLayer = CAShapeLayer()
shapeLayer.path = path.reversing().cgPath
shapeLayer.fillColor = headerColor?.cgColor
shapeLayer.strokeColor = UIColor.black.cgColor
shapeLayer.lineWidth = 1.0
viewHeader.layer.addSublayer(shapeLayer)
I hope it ll work for you, enjoy.
func drawLine() {
let headerColor = UIColor.red
let path = UIBezierPath()
let cpoint1 = CGPoint(x: viewHeader.frame.width/4, y: 160)
let cpoint2 = CGPoint(x: viewHeader.frame.width*3/4, y: viewHeader.frame.height + 50)
path.move(to:.init(x: 0, y: 0))
path.addLine(to:.init(x: 0, y: viewHeader.frame.height - 50))
path.addCurve(to: .init(x: viewHeader.frame.width, y: viewHeader.frame.height - 50), controlPoint1: cpoint1, controlPoint2: cpoint2)
path.addLine(to: CGPoint(x: viewHeader.frame.width, y: 0))
path.addLine(to: CGPoint(x: 0, y: 0))
path.close()
let shapeLayer = CAShapeLayer()
shapeLayer.path = path.reversing().cgPath
shapeLayer.fillColor = headerColor.cgColor
shapeLayer.strokeColor = headerColor.cgColor
shapeLayer.lineWidth = 1.0
viewHeader.layer.addSublayer(shapeLayer)
}

Remove border from UIBezierPath

I have drawn a very simple path using a UIBezierPath and a custom UIView subclass but for some reason, a border appears around the bounds of the view and I cannot seem to get rid of it or see why it was created.
I used this code:
private override func draw(_ rect: CGRect) {
let path = UIBezierPath(rect: CGRect(x: 15, y: 15, width: 300, height: 300))
path.move(to: CGPoint(x: 100, y: 100))
path.addLine(to: CGPoint(x: 150, y: 150))
path.addLine(to: CGPoint(x: 100, y: 200))
path.addLine(to: CGPoint(x: 150, y: 250))
path.lineWidth = 25.0
UIColor.darkGray.setStroke()
path.stroke()
}
and it gave this result... (the border should not be there, only the zig-zag line)
Any help please?
You're creating that rectangle by
let path = UIBezierPath(rect: CGRect(x: 15, y: 15, width: 300, height: 300))
you just need to do
let path = UIBezierPath()
You are initialising the path with a rect, which gets drawn with the stroke.
Just replace your first line with this:
let path = UIBezierPath()

How can I create arc shape ios swift

I have an application with some buttons. I want to create a arc shape button like the following image
How can I do it? I use the following code to achieve this.
button.layer.cornerRadius = button.bounds.size.height
and
button.layer.cornerRadius = 0.5*button.bounds.size.height
I also tried this with the using of width
button.layer.cornerRadius = button.bounds.size.width
and
button.layer.cornerRadius = 0.5*button.bounds.size.width
How can I do it? Please someone help me to solve this.
To create arc shape you need to use UIBezierPath
please read apple's UIBezierPath_class Document.
They have mention method for create arc shape.
Creates and returns a new UIBezierPath object initialized with an arc of a circle.
For constructing the path
Appends an arc to the receiver’s path.
You can also Refer Core Graphics Tutorial Part 1 With Example and search with arc keyword on browser you will redirect to arc shape on the page.
Another image posted by #Jack in above comments and asked help, here is the image:
I couldn't answer him as comment, so pasting my playground here instead.
let shapeView = UIView(frame: CGRect(x: 0, y: 0, width: 360, height: 60))
let shapeSize = shapeView.frame.size
shapeView.backgroundColor = UIColor.white
let path = CGMutablePath()
path.move(to: CGPoint.zero)
let curveWidthOneFourth = shapeSize.width / 4
let curveHeight = shapeSize.height * 0.2
path.addCurve(to: CGPoint(x: curveWidthOneFourth * 2, y: curveHeight), control1: .zero, control2: CGPoint(x: curveWidthOneFourth, y: curveHeight))
path.addCurve(to: CGPoint(x: shapeSize.width, y: 0), control1: CGPoint(x: curveWidthOneFourth * 3, y: curveHeight), control2: CGPoint(x: shapeSize.width, y: 0))
path.addLine(to: CGPoint(x: shapeSize.width, y: shapeSize.height))
path.addLine(to: CGPoint(x: 0, y: shapeSize.height))
path.addLine(to: CGPoint.zero)
And add our path to a view's layer:
let layer = CAShapeLayer()
layer.path = path
layer.fillColor = UIColor.red.cgColor
shapeView.layer.addSublayer(layer)
Encountered a similar task today, I used CGMutableShape instead of UIBezierPath because I was required to animation the shape.
Anyways, to understand the shape I divided the shape into 6 parts (lines & curves):
Base UIView to draw our shape in
let shapeView = UIView(frame: CGRect(x: 16, y: 16, width: 100, height: 44))
shapeView.backgroundColor = UIColor.lightGray
self.view.addSubview(shapeView)
Actual shape and its path
let path = CGMutablePath()
path.move(to: CGPoint(x: 10, y: 0)) // Move path to beginning of part-1
// Draw above divided parts
path.addLine(to: CGPoint(x: 90, y: 0)) // Part-1
path.addCurve(to: CGPoint(x: 95, y: 22), control1: CGPoint(x: 93, y: 6.6), control2: CGPoint(x: 95, y: 14)) // Part-2
path.addCurve(to: CGPoint(x: 90, y: 44), control1: CGPoint(x: 95, y: 30), control2: CGPoint(x: 93, y: 37)) // Part-3
path.addLine(to: CGPoint(x: 10, y: 44)) // Part-4
path.addCurve(to: CGPoint(x: 5, y: 22), control1: CGPoint(x: 7, y: 37), control2: CGPoint(x: 5, y: 30)) // Part-5
path.addCurve(to: CGPoint(x: 10, y: 0), control1: CGPoint(x: 5, y: 14), control2: CGPoint(x: 6, y: 6.6)) // Part-6
let arcLayer = CAShapeLayer()
arcLayer.path = path
arcLayer.fillColor = UIColor.gray.cgColor
shapeView.layer.insertSublayer(arcLayer, at: 0)

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