isRect property Null safety
Whether this rounded rectangle is a simple rectangle with zero corner radii.
Implementation
bool get isRect {
return (tlRadiusX == 0.0 || tlRadiusY == 0.0) &&
(trRadiusX == 0.0 || trRadiusY == 0.0) &&
(blRadiusX == 0.0 || blRadiusY == 0.0) &&
(brRadiusX == 0.0 || brRadiusY == 0.0);
}