public override int GetHashCode()
{
unchecked {
var hashCode = SourcePolyNode.GetHashCode();
hashCode = (hashCode * 397) ^ DestinationPolyNode.GetHashCode();
hashCode = (hashCode * 397) ^ SourceCrossoverPoint.GetHashCode();
hashCode = (hashCode * 397) ^ DestinationCrossoverPoint.GetHashCode();
return hashCode;
}
}