static void RouteClusterParentInEdges(List<Edge> inParentEdges, EdgeRoutingSettings edgeRoutingSettings, Cluster cluster,
double padding) {
foreach (var e in cluster.InEdges.Where(e => IsDescendant(e.Source, cluster))) {
double ePadding = Math.Max(padding, 1.5*ArrowlengthAtTarget(e));
var hookPort = e.TargetPort as HookUpAnywhereFromInsidePort;
if (hookPort == null)
e.TargetPort = hookPort = new HookUpAnywhereFromInsidePort(() => cluster.BoundaryCurve);
hookPort.HookSize = ePadding;
e.Curve = StraightLineEdges.CreateLoop(e.Source.BoundingBox, cluster.BoundingBox, ePadding, false);
Arrowheads.TrimSplineAndCalculateArrowheads(e, e.Curve, false,
edgeRoutingSettings.KeepOriginalSpline);
inParentEdges.Add(e);
}
}
double GetIdealDistanceBetweenHookUpAnywherePortAndPort(HookUpAnywhereFromInsidePort hookPort, Port port) {
var poly = hookPort.LoosePolyline;
var point = port.Location;
var closestPar = poly.ClosestParameter(point);
return (point - poly[closestPar]).Length;
}
void FixLastPolylinePointForAnywherePort(HookUpAnywhereFromInsidePort port) {
while (true) {
PolylinePoint lastPointInside = GetLastPointInsideOfCurveOnPolyline(port.Curve);
lastPointInside.Next.Next = null;
_polyline.EndPoint=lastPointInside.Next;
var dir = lastPointInside.Next.Point - lastPointInside.Point;
dir = dir.Normalize()*port.Curve.BoundingBox.Diagonal; //make it a long vector
var dir0 = dir.Rotate(-port.AdjustmentAngle);
var dir1 = dir.Rotate(port.AdjustmentAngle);
var rx=Curve.CurveCurveIntersectionOne(port.Curve, new LineSegment(lastPointInside.Point, lastPointInside.Point+dir0), true);
var lx=Curve.CurveCurveIntersectionOne(port.Curve, new LineSegment(lastPointInside.Point, lastPointInside.Point+dir1), true);
if (rx == null || lx == null) return;
//this.ShowPolylineAndObstacles(Polyline, new LineSegment(lastPointInside.Point, lastPointInside.Point+dir0), new LineSegment(lastPointInside.Point, rerPoint+dir1), port.Curve);
var trimmedCurve = GetTrimmedCurveForHookingUpAnywhere(port.Curve, lastPointInside, rx, lx);
var newLastPoint = trimmedCurve[trimmedCurve.ClosestParameter(lastPointInside.Point)];
if (!LineAvoidsTightHierarchy(new LineSegment(lastPointInside.Point, newLastPoint), SourceTightPolyline, null)) {
var xx=Curve.CurveCurveIntersectionOne(port.Curve, new LineSegment(lastPointInside.Point, lastPointInside.Next.Point), false);
if (xx == null) return;
//this.ShowPolylineAndObstacles(Polyline, port.Curve);
_polyline.EndPoint.Point = xx.IntersectionPoint;
break;
}
_polyline.EndPoint.Point = newLastPoint;
if (lastPointInside.Prev == null || !TryShortcutPolyPoint(lastPointInside.Prev))
break;
}
}
void ExtendPolyline(Point tangentAtIntersection, IntersectionInfo x, Point polylineTangent, HookUpAnywhereFromInsidePort port) {
var normal=tangentAtIntersection.Rotate(Math.PI/2);
if(normal*polylineTangent<0)
normal=-normal;
var pointBeforeLast = x.IntersectionPoint + normal * port.HookSize;
Point pointAfterX;
if (!Point.LineLineIntersection(pointBeforeLast, pointBeforeLast+tangentAtIntersection, _polyline.End, _polyline.End+polylineTangent, out pointAfterX))
return;
_polyline.AddPoint(pointAfterX);
_polyline.AddPoint(pointBeforeLast);
_polyline.AddPoint(x.IntersectionPoint);
}
void BuildHook(HookUpAnywhereFromInsidePort port) {
var curve = port.Curve;
//creating a hook
var ellipse = new Ellipse(port.HookSize, port.HookSize, _polyline.End);
var intersections = Curve.GetAllIntersections(curve, ellipse, true).ToArray();
Debug.Assert(intersections.Length == 2);
if (Point.GetTriangleOrientation(intersections[0].IntersectionPoint, _polyline.End, _polyline.EndPoint.Prev.Point) == TriangleOrientation.Counterclockwise)
intersections.Reverse(); //so the [0] point is to the left of the Polyline
var polylineTangent = (_polyline.End - _polyline.EndPoint.Prev.Point).Normalize();
var tan0 = curve.Derivative(intersections[0].Par0).Normalize();
var prj0 = tan0 * polylineTangent;
if (Math.Abs(prj0) < 0.2)
ExtendPolyline(tan0, intersections[0], polylineTangent, port);
else {
var tan1 = curve.Derivative(intersections[1].Par0).Normalize();
var prj1 = tan1 * polylineTangent;
if (prj1 < prj0)
ExtendPolyline(tan1, intersections[1], polylineTangent, port);
else
ExtendPolyline(tan0, intersections[0], polylineTangent, port);
}
}
ICurve RouteFromFloatingPortToAnywherePort(Polyline targetLoosePoly, bool smooth, out SmoothedPolyline smoothedPolyline, HookUpAnywhereFromInsidePort port) {
if (!port.Curve.BoundingBox.Contains(sourcePort.Location)) {
smoothedPolyline = null;
return null;
}
_sourceVisibilityVertex = GetVertex(sourcePort.Location);
_polyline = GetShortestPolylineToMulitpleTargets(SourceVisibilityVertex, Targets(targetLoosePoly));
if (_polyline == null) {
smoothedPolyline = null;
return null;
}
if (UseSpanner)
TryShortcutPolyline();
RelaxPolyline();
FixLastPolylinePointForAnywherePort(port);
if (port.HookSize > 0)
BuildHook(port);
return SmoothCornersAndReturnCurve(smooth, out smoothedPolyline);
}