Ellipse

Property	Default	Meaning
center	[0.5, 0.5]	Center in the Ellipse's local rectangle
radius	[0.5, 0.5]	Horizontal and vertical radii

Ellipse draws an axis-aligned ellipse in its allocated rectangle. Unlike Circle, it has no intrinsic aspect ratio. Set both dimensions or supply one dimension and an aspect to control its proportions.

center and radius accept { x, y } or [x, y] pairs. center defaults to [0.5, 0.5]. radius defaults to [0.5, 0.5]. Both pairs use the ellipse's own width for x fractions and height for y fractions; px and em are also accepted.

Radii must be nonnegative. Explicit radii and centers do not change layout size, and may extend outside it. Ellipse accepts shared sizing and paint props and has no content children. There is no element-level rotation prop; a rotated outline can instead be constructed with Path.