public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
Debug.Assert(values != null && values.Length == 9, "EdgeRouteToLabelConverter should have 9 parameters: pos (1,2), size (3,4) of source; pos (5,6), size (7,8) of target; routeInformation (9).");
#region Get the inputs
//get the position of the source
Point sourcePos = new Point()
{
X = (values[0] != DependencyProperty.UnsetValue ? (double)values[0] : 0.0),
Y = (values[1] != DependencyProperty.UnsetValue ? (double)values[1] : 0.0)
};
//get the size of the source
Size sourceSize = new Size()
{
Width = (values[2] != DependencyProperty.UnsetValue ? (double)values[2] : 0.0),
Height = (values[3] != DependencyProperty.UnsetValue ? (double)values[3] : 0.0)
};
//get the position of the target
Point targetPos = new Point()
{
X = (values[4] != DependencyProperty.UnsetValue ? (double)values[4] : 0.0),
Y = (values[5] != DependencyProperty.UnsetValue ? (double)values[5] : 0.0)
};
//get the size of the target
Size targetSize = new Size()
{
Width = (values[6] != DependencyProperty.UnsetValue ? (double)values[6] : 0.0),
Height = (values[7] != DependencyProperty.UnsetValue ? (double)values[7] : 0.0)
};
//get the route informations
Point[] routeInformation = (values[8] != DependencyProperty.UnsetValue ? (Point[])values[8] : null);
#endregion
bool hasRouteInfo = routeInformation != null && routeInformation.Length > 0;
//
// Create the path
//
Point p1 = GraphConverterHelper.CalculateAttachPoint(sourcePos, sourceSize, (hasRouteInfo ? routeInformation[0] : targetPos));
Point p2 = GraphConverterHelper.CalculateAttachPoint(targetPos, targetSize, (hasRouteInfo ? routeInformation[routeInformation.Length - 1] : sourcePos));
Point mid = p1 + ((p2 - p1) / 2);
return(parameter as string == "X" ? mid.X : mid.Y);
}
public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
Debug.Assert(values != null && values.Length == 10, "EdgeRouteToPathConverter should have 10 parameters: pos (1,2), size (3,4) of source; pos (5,6), size (7,8) of target; routeInformation (9); Tag (10).");
#region Get the inputs
//get the position of the source
Point sourcePos = new Point()
{
X = (values[0] != DependencyProperty.UnsetValue ? (double)values[0] : 0.0),
Y = (values[1] != DependencyProperty.UnsetValue ? (double)values[1] : 0.0)
};
//get the size of the source
Size sourceSize = new Size()
{
Width = (values[2] != DependencyProperty.UnsetValue ? (double)values[2] : 0.0),
Height = (values[3] != DependencyProperty.UnsetValue ? (double)values[3] : 0.0)
};
//get the position of the target
Point targetPos = new Point()
{
X = (values[4] != DependencyProperty.UnsetValue ? (double)values[4] : 0.0),
Y = (values[5] != DependencyProperty.UnsetValue ? (double)values[5] : 0.0)
};
//get the size of the target
Size targetSize = new Size()
{
Width = (values[6] != DependencyProperty.UnsetValue ? (double)values[6] : 0.0),
Height = (values[7] != DependencyProperty.UnsetValue ? (double)values[7] : 0.0)
};
//get the route informations
Point[] routeInformation = (values[8] != DependencyProperty.UnsetValue ? (Point[])values[8] : null);
object tag = values[9];
#endregion
bool hasRouteInfo = routeInformation != null && routeInformation.Length > 0;
//
// Create the path
//
Point p1 = GraphConverterHelper.CalculateAttachPoint(sourcePos, sourceSize, (hasRouteInfo ? routeInformation[0] : targetPos));
Point p2 = GraphConverterHelper.CalculateAttachPoint(targetPos, targetSize, (hasRouteInfo ? routeInformation[routeInformation.Length - 1] : sourcePos));
var length = (p2 - p1).Length;
PathSegment[] segments = new PathSegment[1 + (hasRouteInfo ? routeInformation.Length : 0)];
if (hasRouteInfo)
{
//append route points
for (int i = 0; i < routeInformation.Length; i++)
{
segments[i] = new LineSegment(routeInformation[i], true);
}
}
Point pLast = (hasRouteInfo ? routeInformation[routeInformation.Length - 1] : p1);
Vector v = pLast - p2;
v = v / v.Length * 10;
Vector n = new Vector(-v.Y, v.X) * 0.5;
segments[segments.Length - 1] = new LineSegment(p2 + v, true);
PathFigureCollection pfc = new PathFigureCollection(2);
/////////////////////
//pfc.Add(new PathFigure(p1, segments, false));
pfc.Add(new PathFigure(p1, new[] { new ArcSegment(p2 + v, new Size(length, length), 0, false, SweepDirection.Clockwise, true) }, false));
/////////////////////
pfc.Add(new PathFigure(p2, new [] { new LineSegment(p2 + v - n, true),
new LineSegment(p2 + v + n, true) }, true));
return(pfc);
}
