private Point GetNearestNeighborSource(ConnectorInfo source, Point endPoint, Rect rectSource, out bool flag)
{
Point n1, n2; // neighbors
this.GetNeighborCorners(source.Orientation, rectSource, out n1, out n2);
if ((this.Distance(n1, endPoint) <= this.Distance(n2, endPoint)))
{
flag = true;
return(n1);
}
else
{
flag = false;
return(n2);
}
}
/// <summary>
/// Adds a new connection.
/// </summary>
/// <param name="connection">The connection.</param>
private void AddConnection(TileConnection connection)
{
ConnectableViewItem connectableFrom = this.GetConnectable(connection.FromId);
if (connectableFrom == null)
{
return;
}
ConnectableViewItem connectableTo = this.GetConnectable(connection.ToId);
if (connectableTo == null)
{
return;
}
//From
HitTestInfo hitTestInfo = this.GetHitTestInfo(connection.FromOrientation);
ConnectorInfo originConnectorInfo = connectableFrom.CreateDiagramConnection(hitTestInfo);
DiagramConnection newConnection = new DiagramConnection(connectableFrom, originConnectorInfo, 0)
{
Id = connection.Id,
ConnectionType = connection.ConnectionType,
RoutingMode = connection.RoutingMode
};
newConnection.EditOperationRequested += this.OnConnectionEditRequested;
//newConnection.CreateConnection(connection.Color, this.scatterView.DiagramSelectedConnectionColor, this.scatterView.DiagramConnectionHighlightColor, connection.Thickness, connection.Opacity);
//To
hitTestInfo = this.GetHitTestInfo(connection.ToOrientation);
ConnectorInfo targetConnectorInfo = connectableTo.CreateDiagramConnection(hitTestInfo);
//newConnection.CompletePendingConnection(connectableTo, targetConnectorInfo, this.scatterView.ControlTileScale);
//Adds connection to related tiles
newConnection.Origin.DiagramConnections.Add(newConnection);
newConnection.Destination.DiagramConnections.Add(newConnection);
connection.DiagramConnection = newConnection;
//this.scatterView.AddVisualConnection(newConnection, false);
}
/// <summary>
/// Gets the connection line.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="sink">The sink.</param>
/// <param name="showLastLine">if set to <c>true</c> [show last line].</param>
/// <returns></returns>
public List <Point> GetConnectionLine(ConnectorInfo source, ConnectorInfo sink, bool showLastLine)
{
List <Point> linePoints = new List <Point>();
Rect rectSource = this.GetRectWithMargin(source, Margin);
Rect rectSink = this.GetRectWithMargin(sink, Margin);
Point startPoint = this.GetOffsetPoint(source, rectSource);
Point endPoint = this.GetOffsetPoint(sink, rectSink);
linePoints.Add(startPoint);
Point currentPoint = startPoint;
if (!rectSink.Contains(currentPoint) && !rectSource.Contains(endPoint))
{
while (true)
{
#region source node
if (this.IsPointVisible(currentPoint, endPoint, new Rect[] { rectSource, rectSink }))
{
linePoints.Add(endPoint);
currentPoint = endPoint;
break;
}
Point neighbour = this.GetNearestVisibleNeighborSink(currentPoint, endPoint, sink, rectSource, rectSink);
if (!double.IsNaN(neighbour.X))
{
linePoints.Add(neighbour);
linePoints.Add(endPoint);
currentPoint = endPoint;
break;
}
if (currentPoint == startPoint)
{
bool flag;
Point n = this.GetNearestNeighborSource(source, endPoint, rectSource, rectSink, out flag);
linePoints.Add(n);
currentPoint = n;
if (!this.IsRectVisible(currentPoint, rectSink, new Rect[] { rectSource }))
{
Point n1, n2;
this.GetOppositeCorners(source.Orientation, rectSource, out n1, out n2);
if (flag)
{
linePoints.Add(n1);
currentPoint = n1;
}
else
{
linePoints.Add(n2);
currentPoint = n2;
}
if (!this.IsRectVisible(currentPoint, rectSink, new Rect[] { rectSource }))
{
if (flag)
{
linePoints.Add(n2);
currentPoint = n2;
}
else
{
linePoints.Add(n1);
currentPoint = n1;
}
}
}
}
#endregion
#region sink node
else // from here on we jump to the sink node
{
Point n1, n2; // neighbour corner
Point s1, s2; // opposite corner
this.GetNeighborCorners(sink.Orientation, rectSink, out s1, out s2);
this.GetOppositeCorners(sink.Orientation, rectSink, out n1, out n2);
bool n1Visible = this.IsPointVisible(currentPoint, n1, new Rect[] { rectSource, rectSink });
bool n2Visible = this.IsPointVisible(currentPoint, n2, new Rect[] { rectSource, rectSink });
if (n1Visible && n2Visible)
{
if (rectSource.Contains(n1))
{
linePoints.Add(n2);
if (rectSource.Contains(s2))
{
linePoints.Add(n1);
linePoints.Add(s1);
}
else
{
linePoints.Add(s2);
}
linePoints.Add(endPoint);
currentPoint = endPoint;
break;
}
if (rectSource.Contains(n2))
{
linePoints.Add(n1);
if (rectSource.Contains(s1))
{
linePoints.Add(n2);
linePoints.Add(s2);
}
else
{
linePoints.Add(s1);
}
linePoints.Add(endPoint);
currentPoint = endPoint;
break;
}
if ((this.Distance(n1, endPoint) <= this.Distance(n2, endPoint)))
{
linePoints.Add(n1);
if (rectSource.Contains(s1))
{
linePoints.Add(n2);
linePoints.Add(s2);
}
else
{
linePoints.Add(s1);
}
linePoints.Add(endPoint);
currentPoint = endPoint;
break;
}
else
{
linePoints.Add(n2);
if (rectSource.Contains(s2))
{
linePoints.Add(n1);
linePoints.Add(s1);
}
else
{
linePoints.Add(s2);
}
linePoints.Add(endPoint);
currentPoint = endPoint;
break;
}
}
else if (n1Visible)
{
linePoints.Add(n1);
if (rectSource.Contains(s1))
{
linePoints.Add(n2);
linePoints.Add(s2);
}
else
{
linePoints.Add(s1);
}
linePoints.Add(endPoint);
currentPoint = endPoint;
break;
}
else
{
linePoints.Add(n2);
if (rectSource.Contains(s2))
{
linePoints.Add(n1);
linePoints.Add(s1);
}
else
{
linePoints.Add(s2);
}
linePoints.Add(endPoint);
currentPoint = endPoint;
break;
}
}
#endregion
}
}
else
{
linePoints.Add(endPoint);
}
linePoints = this.OptimizeLinePoints(linePoints, new Rect[] { rectSource, rectSink }, source.Orientation, sink.Orientation);
this.CheckPathEnd(source, sink, showLastLine, linePoints);
return(linePoints);
}
private Point GetNearestVisibleNeighborSink(Point currentPoint, Point endPoint, ConnectorInfo sink, Rect rectSource, Rect rectSink)
{
Point s1, s2; // neighbors on sink side
this.GetNeighborCorners(sink.Orientation, rectSink, out s1, out s2);
bool flag1 = this.IsPointVisible(currentPoint, s1, new Rect[] { rectSource, rectSink });
bool flag2 = this.IsPointVisible(currentPoint, s2, new Rect[] { rectSource, rectSink });
if (flag1) // s1 visible
{
if (flag2) // s1 and s2 visible
{
if (rectSink.Contains(s1))
{
return(s2);
}
if (rectSink.Contains(s2))
{
return(s1);
}
if ((this.Distance(s1, endPoint) <= this.Distance(s2, endPoint)))
{
return(s1);
}
else
{
return(s2);
}
}
else
{
return(s1);
}
}
else // s1 not visible
{
if (flag2) // only s2 visible
{
return(s2);
}
else // s1 and s2 not visible
{
return(new Point(double.NaN, double.NaN));
}
}
}
/// <summary>
/// Gets the connection line.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="sinkPoint">The sink point.</param>
/// <param name="preferredOrientation">The preferred orientation.</param>
/// <returns></returns>
public List <Point> GetConnectionLine(ConnectorInfo source, Point sinkPoint, ConnectorOrientation preferredOrientation)
{
List <Point> linePoints = new List <Point>();
Rect rectSource = this.GetRectWithMargin(source, 1);
Point startPoint = this.GetOffsetPoint(source, rectSource);
Point endPoint = sinkPoint;
linePoints.Add(startPoint);
//linePoints.Add(endPoint);
//return linePoints;
Point currentPoint = startPoint;
if (!rectSource.Contains(endPoint))
{
while (true)
{
if (this.IsPointVisible(currentPoint, endPoint, new Rect[] { rectSource }))
{
linePoints.Add(endPoint);
break;
}
bool sideFlag;
Point n = this.GetNearestNeighborSource(source, endPoint, rectSource, out sideFlag);
linePoints.Add(n);
currentPoint = n;
if (this.IsPointVisible(currentPoint, endPoint, new Rect[] { rectSource }))
{
linePoints.Add(endPoint);
break;
}
else
{
Point n1, n2;
this.GetOppositeCorners(source.Orientation, rectSource, out n1, out n2);
if (sideFlag)
{
linePoints.Add(n1);
}
else
{
linePoints.Add(n2);
}
linePoints.Add(endPoint);
break;
}
}
}
else
{
linePoints.Add(endPoint);
}
if (preferredOrientation != ConnectorOrientation.None)
{
linePoints = this.OptimizeLinePoints(linePoints, new Rect[] { rectSource }, source.Orientation, preferredOrientation);
}
else
{
linePoints = this.OptimizeLinePoints(linePoints, new Rect[] { rectSource }, source.Orientation, this.GetOpositeOrientation(source.Orientation));
}
return(linePoints);
}