/// <summary>
/// Create and apply edge path using calculated ER parameters stored in edge
/// </summary>
/// <param name="useCurrentCoords">Use current vertices coordinates or final coorfinates (for.ex if move animation is active final coords will be its destination)</param>
/// <param name="externalRoutingPoints">Provided custom routing points will be used instead of stored ones.</param>
/// <param name="updateLabel">Should edge label be updated in this pass</param>
public void PrepareEdgePath(bool useCurrentCoords = false, Point[] externalRoutingPoints = null, bool updateLabel = true)
{
//do not calculate invisible edges
if ((Visibility != Visibility.Visible && !IsHiddenEdgesUpdated) && Source == null || Target == null || ManualDrawing)
{
return;
}
var template = Template;
if (template != null)
{
#region Get the inputs
//get the size of the source
var sourceSize = new Size
{
Width = Source.ActualWidth,
Height = Source.ActualHeight
};
if (DesignerProperties.GetIsInDesignMode(this))
{
sourceSize = new Size(80, 20);
}
//get the position center of the source
var sourcePos = new Point
{
X = (useCurrentCoords ? GraphAreaBase.GetX(Source) : GraphAreaBase.GetFinalX(Source)) + sourceSize.Width * .5,
Y = (useCurrentCoords ? GraphAreaBase.GetY(Source) : GraphAreaBase.GetFinalY(Source)) + sourceSize.Height * .5
};
//get the size of the target
var targetSize = new Size
{
Width = Target.ActualWidth,
Height = Target.ActualHeight
};
if (DesignerProperties.GetIsInDesignMode(this))
{
targetSize = new Size(80, 20);
}
//get the position center of the target
var targetPos = new Point
{
X = (useCurrentCoords ? GraphAreaBase.GetX(Target) : GraphAreaBase.GetFinalX(Target)) + targetSize.Width * .5,
Y = (useCurrentCoords ? GraphAreaBase.GetY(Target) : GraphAreaBase.GetFinalY(Target)) + targetSize.Height * .5
};
//get the route informations
var routeInformation = externalRoutingPoints == null ? (Edge as IRoutingInfo).RoutingPoints : externalRoutingPoints;
#endregion
// Get the TopLeft position of the Source Vertex.
var sourcePos1 = new Point
{
X = (useCurrentCoords ? GraphAreaBase.GetX(Source) : GraphAreaBase.GetFinalX(Source)),
Y = (useCurrentCoords ? GraphAreaBase.GetY(Source) : GraphAreaBase.GetFinalY(Source))
};
// Get the TopLeft position of the Target Vertex.
var targetPos1 = new Point
{
X = (useCurrentCoords ? GraphAreaBase.GetX(Target) : GraphAreaBase.GetFinalX(Target)),
Y = (useCurrentCoords ? GraphAreaBase.GetY(Target) : GraphAreaBase.GetFinalY(Target))
};
//if self looped edge
if (IsSelfLooped)
{
if (!RootArea.EdgeShowSelfLooped)
{
return;
}
var pt = new Point(sourcePos1.X + RootArea.EdgeSelfLoopCircleOffset.X - RootArea.EdgeSelfLoopCircleRadius, sourcePos1.Y + RootArea.EdgeSelfLoopCircleOffset.X - RootArea.EdgeSelfLoopCircleRadius);
var geo = new EllipseGeometry(pt, RootArea.EdgeSelfLoopCircleRadius, RootArea.EdgeSelfLoopCircleRadius);
const double dArrowAngle = Math.PI / 2.0;
_arrowgeometry = new PathGeometry();
var aPoint = sourcePos1;
_arrowgeometry.Figures.Add(GeometryHelper.GenerateArrow(aPoint, new Point(), new Point(), dArrowAngle));
_linegeometry = geo;
GeometryHelper.TryFreeze(_arrowgeometry);
GeometryHelper.TryFreeze(_linegeometry);
return;
}
var hasRouteInfo = routeInformation != null && routeInformation.Length > 1;
//calculate source and target edge attach points
if (RootArea != null && !hasRouteInfo && RootArea.EnableParallelEdges)
{
if (SourceOffset != 0)
{
sourcePos = GetParallelOffset(Source, Target, SourceOffset);
}
if (TargetOffset != 0)
{
targetPos = GetParallelOffset(Target, Source, TargetOffset);
}
}
/* Rectangular shapes implementation by bleibold */
//Point p1 = GeometryHelper.GetEdgeEndpoint(sourcePos, new Rect(sourceSize), (hasRouteInfo ? routeInformation[1] : (targetPos)), Source.MathShape);
//Point p2 = GeometryHelper.GetEdgeEndpoint(targetPos, new Rect(targetSize), hasRouteInfo ? routeInformation[routeInformation.Length - 2] : (sourcePos), Target.MathShape);
var p1 = GeometryHelper.GetEdgeEndpoint(sourcePos, new Rect(sourcePos1, sourceSize), (hasRouteInfo ? routeInformation[1] : (targetPos)), Source.MathShape);
var p2 = GeometryHelper.GetEdgeEndpoint(targetPos, new Rect(targetPos1, targetSize), hasRouteInfo ? routeInformation[routeInformation.Length - 2] : (sourcePos), Target.MathShape);
_linegeometry = new PathGeometry(); PathFigure lineFigure;
_arrowgeometry = new PathGeometry(); PathFigure arrowFigure;
//if we have route and route consist of 2 or more points
if (RootArea != null && hasRouteInfo)
{
//replace start and end points with accurate ones
var routePoints = routeInformation.ToList();
routePoints.Remove(routePoints.First());
routePoints.Remove(routePoints.Last());
routePoints.Insert(0, p1);
routePoints.Add(p2);
if (RootArea.EdgeCurvingEnabled)
{
var oPolyLineSegment = GeometryHelper.GetCurveThroughPoints(routePoints.ToArray(), 0.5, RootArea.EdgeCurvingTolerance);
lineFigure = GeometryHelper.GetPathFigureFromPathSegments(routePoints[0], true, true, oPolyLineSegment);
//get two last points of curved path to generate correct arrow
var cLast = oPolyLineSegment.Points.Last();
var cPrev = oPolyLineSegment.Points[oPolyLineSegment.Points.Count - 2];
arrowFigure = GeometryHelper.GenerateOldArrow(cPrev, cLast);
//freeze and create resulting geometry
GeometryHelper.TryFreeze(oPolyLineSegment);
}
else
{
lineFigure = new PathFigure(p1, new PathSegment[] { new PolyLineSegment(routePoints, true) }, false);
arrowFigure = GeometryHelper.GenerateOldArrow(routePoints[routePoints.Count - 2], p2);
}
}
else // no route defined
{
//!!! Here is the line calculation to not overlap an arrowhead
//Vector v = p1 - p2; v = v / v.Length * 5;
// Vector n = new Vector(-v.Y, v.X) * 0.7;
//segments[0] = new LineSegment(p2 + v, true);
lineFigure = new PathFigure(p1, new PathSegment[] { new LineSegment(p2, true) }, false);
arrowFigure = GeometryHelper.GenerateOldArrow(p1, p2);
}
GeometryHelper.TryFreeze(lineFigure);
(_linegeometry as PathGeometry).Figures.Add(lineFigure);
if (arrowFigure != null)
{
GeometryHelper.TryFreeze(arrowFigure);
_arrowgeometry.Figures.Add(arrowFigure);
}
GeometryHelper.TryFreeze(_linegeometry);
GeometryHelper.TryFreeze(_arrowgeometry);
if (ShowLabel && _edgeLabelControl != null && _updateLabelPosition && updateLabel)
{
_edgeLabelControl.UpdatePosition();
}
//PathGeometry = (PathGeometry)_linegeometry;
}
else
{
Debug.WriteLine("PrepareEdgePath() -> Edge template not found! Can't apply path to display edge!");
}
}
/// <summary>
/// Create and apply edge path using calculated ER parameters stored in edge
/// </summary>
/// <param name="useCurrentCoords">Use current vertices coordinates or final coordinates (for.ex if move animation is active final coords will be its destination)</param>
/// <param name="externalRoutingPoints">Provided custom routing points will be used instead of stored ones.
public void PrepareEdgePath(bool useCurrentCoords = false, Point[] externalRoutingPoints = null)
{
//do not calculate invisible edges
if (Visibility != System.Windows.Visibility.Visible || Source == null || Target == null || ManualDrawing)
{
return;
}
var template = Template;
if (template != null)
{
#region Get the inputs
//get the position of the source
var sourcePos = new Point()
{
X = useCurrentCoords ? GraphAreaBase.GetX(Source) : GraphAreaBase.GetFinalX(Source),
Y = useCurrentCoords ? GraphAreaBase.GetY(Source) : GraphAreaBase.GetFinalY(Source)
};
//get the size of the source
var sourceSize = new Size()
{
Width = Source.ActualWidth,
Height = Source.ActualHeight
};
//get the position of the target
var targetPos = new Point()
{
X = useCurrentCoords ? GraphAreaBase.GetX(Target) : GraphAreaBase.GetFinalX(Target),
Y = useCurrentCoords ? GraphAreaBase.GetY(Target) : GraphAreaBase.GetFinalY(Target)
};
//get the size of the target
var targetSize = new Size()
{
Width = Target.ActualWidth,
Height = Target.ActualHeight
};
//get the route informations
var routeInformation = externalRoutingPoints == null ? (Edge as IRoutingInfo).RoutingPoints : externalRoutingPoints;
#endregion
//if self looped edge
if (IsSelfLooped)
{
if (!RootArea.EdgeShowSelfLooped)
{
return;
}
var pt = new Point(sourcePos.X - sourceSize.Width / 2 + RootArea.EdgeSelfLoopCircleOffset.X - RootArea.EdgeSelfLoopCircleRadius, sourcePos.Y - sourceSize.Height / 2 + RootArea.EdgeSelfLoopCircleOffset.X - RootArea.EdgeSelfLoopCircleRadius);
var geo = new EllipseGeometry(pt,
RootArea.EdgeSelfLoopCircleRadius, RootArea.EdgeSelfLoopCircleRadius);
var dArrowAngle = Math.PI / 2.0;
_arrowgeometry = new PathGeometry(); _arrowgeometry.Figures.Add(GeometryHelper.GenerateArrow(new Point(sourcePos.X - sourceSize.Width / 2, sourcePos.Y - sourceSize.Height / 2), new Point(), new Point(), dArrowAngle));
_linegeometry = geo;
return;
}
bool hasRouteInfo = routeInformation != null && routeInformation.Length > 1;
//calculate source and target edge attach points
if (!hasRouteInfo && RootArea.EnableParallelEdges)
{
if (SourceOffset != 0)
{
sourcePos = GetOffset(Source, Target, SourceOffset);
}
if (TargetOffset != 0)
{
targetPos = GetOffset(Target, Source, TargetOffset);
}
}
Point p1 = GeometryHelper.GetEdgeEndpoint(sourcePos, new Rect(sourceSize), (hasRouteInfo ? routeInformation[1] : (targetPos)), Source.MathShape);
Point p2 = GeometryHelper.GetEdgeEndpoint(targetPos, new Rect(targetSize), hasRouteInfo ? routeInformation[routeInformation.Length - 2] : (sourcePos), Target.MathShape);
_linegeometry = new PathGeometry(); PathFigure lineFigure = null;
_arrowgeometry = new PathGeometry(); PathFigure arrowFigure = null;
//if we have route and route consist of 2 or more points
if (hasRouteInfo)
{
//replace start and end points with accurate ones
var routePoints = routeInformation.ToList();
routePoints.Remove(routePoints.First());
routePoints.Remove(routePoints.Last());
routePoints.Insert(0, p1);
routePoints.Add(p2);
if (RootArea.EdgeCurvingEnabled)
{
var oPolyLineSegment = GeometryHelper.GetCurveThroughPoints(routePoints.ToArray(), 0.5, RootArea.EdgeCurvingTolerance);
lineFigure = GeometryHelper.GetPathFigureFromPathSegments(routePoints[0], true, true, oPolyLineSegment);
//get two last points of curved path to generate correct arrow
var c_last = oPolyLineSegment.Points.Last();
var c_prev = oPolyLineSegment.Points[oPolyLineSegment.Points.Count - 2];
arrowFigure = GeometryHelper.GenerateOldArrow(c_prev, c_last);
//freeze and create resulting geometry
GeometryHelper.TryFreeze(oPolyLineSegment);
}
else
{
lineFigure = new PathFigure(p1, new PathSegment[1] {
new PolyLineSegment(routePoints, true)
}, false);
arrowFigure = GeometryHelper.GenerateOldArrow(routePoints[routePoints.Count - 2], p2);
}
}
else // no route defined
{
//!!! Here is the line calculation to not overlap an arrowhead
//Vector v = p1 - p2; v = v / v.Length * 5;
// Vector n = new Vector(-v.Y, v.X) * 0.7;
//segments[0] = new LineSegment(p2 + v, true);
lineFigure = new PathFigure(p1, new PathSegment[1] {
new LineSegment(p2, true)
}, false);
arrowFigure = GeometryHelper.GenerateOldArrow(p1, p2);
}
GeometryHelper.TryFreeze(lineFigure);
(_linegeometry as PathGeometry).Figures.Add(lineFigure);
if (arrowFigure != null)
{
GeometryHelper.TryFreeze(arrowFigure);
_arrowgeometry.Figures.Add(arrowFigure);
}
GeometryHelper.TryFreeze(_linegeometry);
GeometryHelper.TryFreeze(_arrowgeometry);
}
else
{
Debug.WriteLine("PrepareEdgePath() -> Edge template not found! Can't apply path to display edge!");
}
}