Feature Request: Support for Radial Boundary (Circular Drag Constraint)

[Rspoon3]

Thanks for this great library! I’ve been using SnapDraggingModifier and really like the intuitive UX it enables.

Currently, the API supports horizontal and vertical boundaries:

SnapDraggingModifier(
  gestureMode: .normal,
  offset: $offset,
  horizontalBoundary: .init(min: -50, max: 50, bandLength: 50),
  verticalBoundary: .init(min: -50, max: 50, bandLength: 50)
)

However, I’d love to see support for a radial (circular) boundary, where the drag is constrained to a circle around a center point. This would make the experience feel more like the view is “leashed” to a certain point — great for circular controls, knobs, or playful UI elements.

Would you consider adding this feature or supporting a custom boundary shape?

Thanks again!