longestStretchWithRotateX method

List<Direction>? longestStretchWithRotateX()

rotateX后最长边延伸落在哪个象限

Implementation

List<Direction>? longestStretchWithRotateX() {
  if (_rotateX < 0) {
    return [Direction.left_top, Direction.right_top];
  } else if (_rotateX > 0) {
    return [Direction.left_bottom, Direction.right_bottom];
  }
  return null;
}