isDone method

  1. @override
Offset? isDone(
  1. Offset o,
  2. double dt
)
override

通常返回null为结束

Implementation

@override
Offset? isDone(Offset o, double dt) {
  Offset result = o + dOffset(dt);
  if (stageRect.contains(result)) {
    return null;
  }
  return result;
}