getCropBox

The shape update one step of a crop drag produces, or undefined when the drag would change nothing.

Returns a partial in the same form onResize does — x, y and the changed props — so a util's onCrop can hand it straight back:

``ts override onCrop(shape: ImageShape, info: TLCropInfo<ImageShape>) { return getCropBox(shape, info, { minWidth: 32 }) } ``

The handle being dragged decides which of the four normalized edges moves. Each edge is clamped so the window stays inside 0…1 and so the box stays above the minimum; because every step recomputes from info.initialShape rather than from the shape's current state, a drag that hits a clamp and comes back lands exactly where it would have without the clamp.