angleOf2Lines method Null safety

double angleOf2Lines(
  1. Line line1,
  2. dynamic line2
)

Get the angle between 2 lines

result is in radian

Implementation

static double angleOf2Lines(Line line1, line2) {
  final a1 = _getAtan2(line1);
  final a2 = _getAtan2(line2);

  if (a1 != double.nan && a2 != double.nan) {
    return a2 - a1;
  }

  return double.nan;
}