Saving and loading

Ambit doesn't pick a format for you. It gives you plain DTOs you can save however you want.

The DTOs

RegionDto, type, points, style, label, decorations
DecorationDto, type, anchor, properties

Save and load

csharp

using Ambit;

var registry = new RegionTypeRegistry().RegisterBuiltInTypes();

// Save
var dtos = controller.Regions.Select(r => registry.ToDto(r)).ToList();
var json = JsonSerializer.Serialize(dtos);

// Load
var loaded = JsonSerializer.Deserialize<List<RegionDto>>(json)!;
var regions = loaded.Select(dto => registry.CreateRegion(dto));
controller.SetRegions(regions);

Custom shapes

If you added your own shape (like CircleRegion), add its factory before saving/loading:

csharp

registry.Register(new CircleRegionFactory());

That's it, the same registry you use for drawing is used for saving.