The full bounds with each corner rounded to size, or to half the shorter side where that is less, so a radius too large for the size is a pill, as androidx's RoundedCornerShape is.
RoundedCornerShape
if size is negative.
the corner radius; 0f is RectangleShape.
0f
The outline this shape takes at width x height, with the decorated box's top-left corner as the origin.