isWithinLimit method

bool isWithinLimit(
  1. LetterOffset offset
)

check whether user interaction on the panel within the letter positions limit or outside the area

Implementation

bool isWithinLimit(LetterOffset offset) {
  return !(offset.getSmallerOffset.dx < 0 ||
      offset.getSmallerOffset.dx > letters.length - 1 ||
      offset.getSmallerOffset.dy < 0 ||
      offset.getSmallerOffset.dy > letters.first.length - 1);
}