public override int GetHashCode()
 {
     unchecked
     {
         int hashCode = (gameObject != null ? gameObject.GetHashCode() : 0);
         hashCode = (hashCode * 397) ^ (mesh != null ? mesh.GetHashCode() : 0);
         hashCode = (hashCode * 397) ^ vertex;
         hashCode = (hashCode * 397) ^ edge.GetHashCode();
         hashCode = (hashCode * 397) ^ (face != null ? face.GetHashCode() : 0);
         return(hashCode);
     }
 }