private void CalculateArea()
{
AreaGood = true;
area = 0;
for (int i = 0; i < corners.Length; i++)
{
Vector2 corner1 = corners[i];
Vector2 corner2 = corners[(i + 1) % corners.Length];
Vector2 center = Vector2.Zero;
area += (1 / 2f) * LocationManager.getDistance(center, corner1) * LocationManager.getDistance(center, corner2) * (float)Math.Sin(LocationManager.NormalRelitiveAngle_NormalInput(LocationManager.getRotation(center, corner1), LocationManager.getRotation(center, corner2)));
}
}