update abstract method

bool update(
  1. T object,
  2. Offset focalPoint,
  3. Color color,
  4. Matrix4 transform,
  5. Size size,
)

Returning true will trigger a re-paint.

Useful for pan/zoom where you don't paint anything.

NOTE: Will not be called if start() returned a Future.

Implementation

bool update(
  T object,
  Offset focalPoint,
  Color color,
  Matrix4 transform,
  Size size,
);