private GoLink DrawEdge(GoNodeWrapper nodeWrapper, GoView myView, InstructionNode backNode, GoLayer layer, Pen pen)
{
GoLink link = new GoLink();
var backNodeWrapper = GetNodeWrapper(backNode);
link.Pen = pen;
link.ToPort = nodeWrapper.Node.LeftPort;
if (backNodeWrapper.Node == nodeWrapper.Node)
{
link.FromPort = backNodeWrapper.Node.RightPort;
link.Style = GoStrokeStyle.Bezier;
link.CalculateRoute();
foreach (int index in new[] { 1, 2 })
{
link.SetPoint(index, new PointF(link.GetPoint(index).X, link.GetPoint(index).Y - 40));
}
}
else
{
link.FromPort = backNodeWrapper.Node.RightPort;
}
layer.Add(link);
link.PenWidth = 3;
return(link);
}
/// <summary>
/// Determine the angle the port at the other end makes with this port.
/// </summary>
/// <param name="link"></param>
/// <returns>the angle in degrees</returns>
public virtual float GetAngle(IGoLink link)
{
if (link == null)
{
return(0f);
}
IGoPort goPort = link.GetOtherPort(this);
if (goPort == null)
{
if (link.FromPort != null && link.FromPort.GoObject != null && link.FromPort.GoObject.Bounds == Bounds)
{
goPort = link.ToPort;
}
else if (link.ToPort != null && link.ToPort.GoObject != null && link.ToPort.GoObject.Bounds == Bounds)
{
goPort = link.FromPort;
}
}
if (goPort == null)
{
return(0f);
}
GoObject goObject = goPort.GoObject;
if (goObject == null)
{
return(0f);
}
PointF pointF = goObject.Center;
PointF center = base.Center;
GoLink goLink = link as GoLink;
if (goLink == null)
{
GoLabeledLink goLabeledLink = link as GoLabeledLink;
if (goLabeledLink != null)
{
goLink = goLabeledLink.RealLink;
}
}
if (goLink != null && goLink.PointsCount > 0)
{
pointF = ((goLink.FromPort != goPort) ? goLink.GetPoint(checked (goLink.PointsCount - 1)) : goLink.GetPoint(0));
}
return(GoStroke.GetAngle(pointF.X - center.X, pointF.Y - center.Y));
}