GetImageAlphaBorder method
Get image alpha border rectangle
Implementation
@override
RectangleD GetImageAlphaBorder(
ImageD image,
double threshold,
) => $.Rectangle$.Extract1(
(p) => _ffi.GetImageAlphaBorder(
$.Image$.Ref1(image).asNativePointer<ImageC>().ref,
threshold,
).toDart(p.asNativePointer()),
);