lerp method Null safety
- double t
 
override
    Returns the value this variable has at the given animation clock value.
Implementation
@override
Rect lerp(double t) {
  if (_dirty) {
    _initialize();
  }
  if (t == 0.0) {
    return begin!;
  }
  if (t == 1.0) {
    return end!;
  }
  return Rect.fromPoints(_beginArc.lerp(t), _endArc.lerp(t));
}