First off, really great work! This component is awesome and it captures many advantages of using SwiftUI vs CA/CG 🙌

I'm having an issue when rendering data sets where some nodes are a lot larger than others.

Consider the demo project with this data set:

    let configuration = SunburstConfiguration(nodes: [
        Node(name: "Walking", showName: false, image: UIImage(named: "walking"), value: 4078656, backgroundColor: .systemBlue),
        Node(name: "Restaurant", showName: false, image: UIImage(named: "eating"), value: 3203440, backgroundColor: .systemRed),
        Node(name: "Home", showName: false, image: UIImage(named: "house"), value: 45.0, backgroundColor: .systemTeal, children: [
            Node(name: "San Francisco", showName: false, value: 15.0, backgroundColor: .systemTeal, children: [
                Node(name: "Twin Peaks", showName: false, value: 3.0, backgroundColor: .systemOrange),
                Node(name: "Hayes Valley", showName: false, value: 1.5, backgroundColor: .systemOrange),
                Node(name: "Nob Hill", showName: false, value: 8.0, backgroundColor: .systemOrange),
            ]),
        ]),
    ], calculationMode: .parentDependent(totalValue: nil))

The expected behaviour would be to see 2 arcs, Walking and Restaurant, and a third Home that is so thin it should almost not be visible. However, the result is this:

This behaviour seems to be related to the start angle, as changing it seems to affect the behaviour:

If the ArcMinimumAngle setting was implemented, this effect could be mitigated. But it might still be worth trying to figure out the source of this issue.

Hi Ludo Your SundburstDiagram is great; thank you so much for this sharing. I have an issue with displaying info such as the name and image of rings not visible at first display. In other words for instance:

• I set the "maximumExpandedRingsShownCount" to 3
• I set the "maximumRingsShownCount" to 5

when I focus on a node, ranked 3, rings are expanding perfectly, colors of rings appear perfectly but not the nam, neither the images of the rings previously hidden ... Is there a simple way to make them appear ? Is it necessary to modify your code ? A solution is to set the "maximumExpandedRingsShownCount" to the full number of rank of the children but as I would like to use typically 10 levels of children cascaded... it becomes to be unreadable ? I hope we could solve this issue. Even if I am not the king of code, I can try to contribute. Please tell me if there is an easier solution ? best regards K

Hi Ludo Your SunburstDiagram is just great, really. Thank you so much for sharing it. I did import with the swift package on one of my apps I tested your demo on my macbook and iPhone. It works perfect

I just have an issue with trying to use it from scratch. In a new swift file Apps, the import with Swift Package is good. I see all your files. When copy-pasting "let configuration = SunburstConfiguration(nodes: [ Node(name: "Walking", value: 10.0, backgroundColor: .systemBlue), ............. Node(name: "Home", value: 50.0, backgroundColor: .systemTeal), ]) let viewController = UIHostingController(rootView: SunburstView(configuration: configuration))" in the "Viewdidload function" of my "mainViewcontroller", I launch but nothing appears.....

I am not so experienced in Swift and maybe I miss something. If you could help, it would be great. Many thanks and again really a great Apps I am dying to test in my developments. Best regards K

tl/dr: Sunburst displays all slices with equal weight when called from SwiftUI (instead of from UIKit).

I'm attempting to integrate SwiftSunburstDiagram in a project using SwiftUI. Most properties work properly, but all slices are displayed equally weighted. I've set a breakpoint, and the computed weights are computed (and computed properly). However, those weights being computed on the async DispatchQueue do not appear to cause the UI display to change.

Using your example from the main documentation, SunburstDiagram version 1.1.0, XCode version 11.5, iphone X running iOS 13.4 (but the same problem appears in the simulators) the following code reproduces the problem.

The only difference from your example demo is that because this is SwiftUI, there's no UIHostingController involved.

To recreate: File -> New Project -> SwiftUI, Single View.

Replace the contents of ContentView.swift with the following:

import SunburstDiagram
import SwiftUI

struct ContentView: View {
    
    let configuration = SunburstConfiguration(nodes: [
        Node(name: "Walking", value: 10.0, backgroundColor: .systemBlue),
        Node(name: "Restaurant", value: 30.0, backgroundColor: .systemRed, children: [
            Node(name: "Dessert", image: UIImage(named: "croissant"), value: 6.0),
            Node(name: "Dinner", image: UIImage(named: "poultry"), value: 10.0),
        ]),
        Node(name: "Transport", value: 10.0, backgroundColor: .systemPurple),
        Node(name: "Home", value: 50.0, backgroundColor: .systemTeal),
    ])
    
    var body: some View {
        SunburstView(configuration: configuration)
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

I expect a diagram much like the made readme.md demonstrates, instead I get a view with all slices equally weighted

What I expected:

What I got:

Note that the transport slice is the same size as the home slice. It should be smaller.

Hi Ludo I hope you will be able to answer this question.

What are the calculation rules of slice proportions (sizes in other words) in the ".parentdependent" mode when:

• value is defined to nil ?
• value is defined to 100 ?
• value is another figure ?

Many thanks K

Hi,

guess I am doing something wrong... Running this code on a view which is opened as sheet crashes the app.

import SwiftUI
import SunburstDiagram

struct MealBuilderView: View {
    var body: some View {
        
            let configuration = SunburstConfiguration(nodes: [
                Node(name: "Walking",
                     showName: false,
                     value: 10.0,
                     backgroundColor: .systemBlue),
                Node(name: "Restaurant",
                     showName: false,
                     value: 30.0,
                     backgroundColor: .systemRed),
                Node(name: "Home",
                     showName: false,
                     value: 75.0,
                     backgroundColor: .systemTeal)
            ])
            return SunburstView(configuration: configuration)
    }
}
```

Hello!

I've been looking for a Sunburst Chart for Numbers for Mac for a long time. There is a thread in the Apple community dedicated to such a diagram. And then I find your development. However, I understand that this is a component for embedding in other software products.

Can you please tell me if I can embed your diagram in one of Apple's products? I am interested in:

1. Numbers for Mac
2. Numbers for iPad
3. Numbers for iCloud

I work with my spreadsheets in these programs. I want to use your chart in my table. Tell me, is this possible?

Amazing work! I've made a modification so that an arc expands when being selected, instead of having a border around it. It would be really handy if we can group small arcs into an "other" category.