build method

@override Widget build(BuildContext context)

Override this method to build widgets that depend on the state of the listenable (e.g., the current value of the animation).

Implementation

@override
Widget build(BuildContext context) {
  final animation = listenable as Animation<double>;
  return Sprite(
    image: image,
    frameWidth: frameWidth,
    frameHeight: frameHeight,
    frame: frameStart + (animation.value * frameCount).floor(),
    color: color,
    flipHorizontally: flipHorizontally,
  );
}