// using Microsoft.Msagl.Core.Geometry;

// namespace Microsoft.Msagl.Routing {
//    internal class Corner {
//        protected bool Equals(Corner other) {
//            return b === other.b && ((a === other.a && c === other.c) || (a === other.c && c === other.a));
//        }

//        public override int GetHashCode() {
// #if !SHARPKIT //https://code.google.com/p/sharpkit/issues/detail?id=372; SharpKit/Colin: unchecked is not supported
//            unchecked {
// #endif
//                return b.GetHashCode() ^ ((a.GetHashCode() ^ c.GetHashCode())*397);
// #if !SHARPKIT //https://code.google.com/p/sharpkit/issues/detail?id=372
//            }
// #endif
//        }

// #if SHARPKIT //https://code.google.com/p/sharpkit/issues/detail?id=289 Support Map directly based on object's GetHashCode
//        private SharpKit.JavaScript.JsString _hashKey;
//        private void UpdateHashKey()
//        {
//            _hashKey = GetHashCode().ToString();
//        }
// #endif

//        readonly internal Point a;
//        readonly Point b;
//        readonly Point c;

//        public Corner(Point a, Point b, Point c) {
//            this.a = a;
//            this.b = b;
//            this.c = c;
// #if SHARPKIT //https://code.google.com/p/sharpkit/issues/detail?id=289 Support Map directly based on object's GetHashCode
//            UpdateHashKey();
// #endif
//        }

//        public override bool Equals(object obj) {
//            if (ReferenceEquals(null, obj)) return false;
//            if (ReferenceEquals(this, obj)) return true;
//            var corner = obj as Corner;
//            if (ReferenceEquals(corner,null))
//                return false;
//            return Equals(corner);
//        }
//    }
// }