//using System.Collections.Generic;
//using System.Windows;
//using AIStudio.Wpf.DiagramDesigner.Geometrys;

//namespace AIStudio.Wpf.DiagramDesigner.Layout
//{
//    internal interface IState
//	{
//		VectorBase GetNodePosition(DesignerItemViewModelBase node);
//		void SetNodePosition(DesignerItemViewModelBase node, VectorBase pos);
//		VectorBase GetEndpointPosition(ConnectorInfoBase endpoint);
//		VectorBase GetNodeSpeed(DesignerItemViewModelBase node);
//		void SetNodeSpeed(DesignerItemViewModelBase node, VectorBase speed);
//	}

//	internal class BufferedState : IState
//	{
//		private readonly Dictionary<DesignerItemViewModelBase, VectorBase> _nodePositions = new Dictionary<DesignerItemViewModelBase, VectorBase>();
//		private readonly Dictionary<ConnectorInfoBase, VectorBase> _endpointRelativePositions = new Dictionary<ConnectorInfoBase, VectorBase>();
//		public IEnumerable<KeyValuePair<DesignerItemViewModelBase, VectorBase>> NodePositions => _nodePositions;

//		private readonly Dictionary<DesignerItemViewModelBase, VectorBase> _nodeSpeeds = new Dictionary<DesignerItemViewModelBase, VectorBase>();

//		public VectorBase GetNodePosition(DesignerItemViewModelBase node)
//		{
//			if (!_nodePositions.TryGetValue(node, out VectorBase result))
//			{
//				result = new VectorBase(node.Position.X, node.Position.Y);
//			}

//			return result;
//		}

//		public void SetNodePosition(DesignerItemViewModelBase node, VectorBase pos)
//		{
//			_nodePositions[node] = pos;
//		}

//		public VectorBase GetEndpointPosition(ConnectorInfoBase endpoint)
//		{
//			if (!_endpointRelativePositions.TryGetValue(endpoint, out VectorBase result))
//			{
//				result = new VectorBase(endpoint.MiddlePosition.X, endpoint.MiddlePosition.Y) - GetNodePosition(endpoint.Parent);
//				_endpointRelativePositions[endpoint] = result;
//			}

//			return result + GetNodePosition(endpoint.Parent as DesignerItemViewModelBase);
//		}

//		public VectorBase GetNodeSpeed(DesignerItemViewModelBase node)
//		{
//			if (!_nodeSpeeds.TryGetValue(node, out VectorBase result))
//			{
//				result = new VectorBase(0, 0);
//			}

//			return result;
//		}

//		public void SetNodeSpeed(DesignerItemViewModelBase node, VectorBase speed)
//		{
//			_nodeSpeeds[node] = speed;
//		}
//	}

//	internal class LiveState : IState
//	{
//		private readonly Dictionary<DesignerItemViewModelBase, VectorBase> _nodeSpeeds = new Dictionary<DesignerItemViewModelBase, VectorBase>();

//		public VectorBase GetNodePosition(DesignerItemViewModelBase node)
//		{
//			return new VectorBase(node.Position.X, node.Position.Y);
//		}

//		public void SetNodePosition(DesignerItemViewModelBase node, VectorBase pos)
//		{
//			node.Position = new Point(pos.X, pos.Y);
//		}

//		public VectorBase GetEndpointPosition(ConnectorInfoBase endpoint)
//		{
//			return new VectorBase(endpoint.MiddlePosition.X, endpoint.MiddlePosition.Y);
//		}

//		public VectorBase GetNodeSpeed(DesignerItemViewModelBase node)
//		{
//			if (!_nodeSpeeds.TryGetValue(node, out VectorBase result))
//			{
//				result = new VectorBase(0, 0);
//			}

//			return result;
//		}

//		public void SetNodeSpeed(DesignerItemViewModelBase node, VectorBase speed)
//		{
//			_nodeSpeeds[node] = speed;
//		}
//	}
//}