move method

Implementation

void move(Key key, LatLng to, {bool merge = false}) {
  final before = findByKey(key);
  if (before == null) {
    debugPrint(
        'Warning: Attempted to move non-existent polyline with key: $key');
    return;
  }

  if (before.points.isEmpty) return;

  final bounds = LatLngBounds.fromPoints(before.points);
  final centerBefore = bounds.center;

  perform(
    MovePolylineOp(key: key, from: centerBefore, to: to),
    merge: merge,
  );

  // Calculate new points for callback
  final deltaLat = to.latitude - centerBefore.latitude;
  final deltaLng = to.longitude - centerBefore.longitude;
  final newPoints = before.points.map((p) {
    return LatLng(p.latitude + deltaLat, p.longitude + deltaLng);
  }).toList();

  final moved = before.copyWith(points: newPoints);
  _options.onSpatialUpdate?.call(moved, before);
  scheduleAutoSave();
}