angleToSigned method

double angleToSigned (Vector2 other)

Returns the signed angle between this and other in radians.

Implementation

double angleToSigned(Vector2 other) {
  final Float64List otherStorage = other._v2storage;
  if (_v2storage[0] == otherStorage[0] && _v2storage[1] == otherStorage[1]) {
    return 0.0;
  }

  final double s = cross(other);
  final double c = dot(other);

  return math.atan2(s, c);
}