public override int GetHashCode()
{
const int hashIndex = 307;
var result = (Center != null) ? Center.GetHashCode() : 0;
result = (result * hashIndex) ^ ((BeginPoint != null) ? BeginPoint.GetHashCode() : 0);
result = (result * hashIndex) ^ ((EndPoint != null) ? EndPoint.GetHashCode() : 0);
result = (result * hashIndex) ^ ArcDirection.GetHashCode();
return(result);
}
