I am trying to make pie chart as below which is working fine but I have issue with end path (which is orange in below image).

What I want to do is make end of orange shape to below the green one so that I can achieve as below.

Any suggestion how this can be done?

Code can be found at below link.

CodePudding user response：

I found a way to do this. Below is the full code.

I am adding other addArc using end angles.

ViewController.swift

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var myView: MyView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        
        myView.setupData(inner_color: [.green, .purple, .blue, .orange], inner_view_width: self.view.frame.width/5.0, inner_angle: [0.0, 90.0, 180.0, 270.0])
        
        myView.backgroundColor = UIColor.white

    }
    
}

MyView.swift

import UIKit

class MyView: UIView {
    
    var main_radius : CGFloat = 0.0
    
    var main_color : [UIColor] = [UIColor.black, UIColor.green]
    
    var main_view_width : CGFloat = 1.0
    
    var main_angle : [CGFloat] = [-CGFloat.pi, 0.0]
    var actual_angle : [CGFloat] = []
    
    func setupData(inner_color : [UIColor], inner_view_width : CGFloat, inner_angle : [CGFloat]) {
        main_color = inner_color
        
        main_view_width = inner_view_width
        
        main_angle = inner_angle
        
        actual_angle = inner_angle
        
        var temp_main_angle : [CGFloat] = []
        for i in 0..<main_angle.count {
            temp_main_angle.append(main_angle[i]*Double.pi/180)
        }
        main_angle = temp_main_angle
        
        draw(CGRect(x: 0, y: 0, width: self.frame.size.width, height: self.frame.size.width))
    }
    
    override func draw(_ rect: CGRect) {
        
        if (main_color.count >= 2) {
            
            var inner_position : Int = 0
            
            // first draw with sharp corner
            for i in 0..<main_color.count {
                
                if (i == (main_color.count-1)) {
                    inner_position = 0
                } else {
                    inner_position = i 1
                }
                
                drawBeizer(start_angle: main_angle[i], end_angle: main_angle[inner_position], final_color: main_color[i])
            }
            
            
            // append with ending icons for circle
            for i in 0..<main_color.count {
                
                if (i == (main_color.count-1)) {
                    inner_position = 0
                } else {
                    inner_position = i 1
                }
                
                drawBeizer(start_angle: main_angle[inner_position], end_angle: main_angle[inner_position] (1*Double.pi/180), final_color: main_color[i], withCircle: true) // make here final_color as .black to see what I am doing with this loop
            }
        }
    }
    
    func drawBeizer(start_angle : CGFloat, end_angle : CGFloat, final_color : UIColor, withCircle: Bool = false) {
        let path1 : UIBezierPath = UIBezierPath()
        
        path1.addArc(withCenter: CGPoint(x: self.frame.size.width/2, y: self.frame.size.height/2), radius: ((self.frame.size.width-main_view_width)/2), startAngle: start_angle, endAngle: end_angle, clockwise: true)
        path1.lineWidth = main_view_width
        if (withCircle) {
            path1.lineCapStyle = .round
        }
        final_color.setStroke()
        path1.stroke()
        
    }
}

Full code