/// <summary>
/// calculates maximum possible edge separation for the computed routing
/// if it is greater than bundlingSettings.EdgeSeparation, then proceed
/// if it is smaller, then either
/// stop edge bundling, or
/// reduce edge separation, or
/// move obstacles to get more free space
/// </summary>
bool AnalyzeEdgeSeparation()
{
Dictionary <EdgeGeometry, Set <CdtEdge> > crossedCdtEdges = new Dictionary <EdgeGeometry, Set <CdtEdge> >();
shortestPathRouter.FillCrossedCdtEdges(crossedCdtEdges);
Dictionary <CdtEdge, Set <EdgeGeometry> > pathsOnCdtEdge = GetPathsOnCdtEdge(crossedCdtEdges);
double es = CalculateMaxAllowedEdgeSeparation(pathsOnCdtEdge);
// TimeMeasurer.DebugOutput("opt es: " + es);
if (es >= bundlingSettings.EdgeSeparation)
{
return(true); //we can even enlarge it here
}
if (es <= 0.02)
{
TimeMeasurer.DebugOutput("edge bundling can't be executed: not enough free space around obstacles");
foreach (var e in regularEdges)
{
e.Curve = null;
}
return(false);
}
// reducing edge separation
// TimeMeasurer.DebugOutput("reducing edge separation to " + es);
bundlingSettings.EdgeSeparation = es;
shortestPathRouter.RouteEdges();
return(true);
}
/// <summary>
/// edge routing with Ordered Bundles:
/// 1. route edges with bundling
/// 2. nudge bundles and hubs
/// 3. order paths
/// </summary>
protected override void RunInternal()
{
//TimeMeasurer.DebugOutput("edge bundling started");
if (ThereAreOverlaps(TightHierarchy))
{
/*
* LayoutAlgorithmSettings.ShowDebugCurves(
* TightHierarchy.GetAllLeaves().Select(p => new DebugCurve(100, 1, "black", p)).ToArray());*/
Status = BundlingStatus.Overlaps;
TimeMeasurer.DebugOutput("overlaps in edge bundling");
return;
}
FixLocationsForHookAnywherePorts(geometryGraph.Edges);
if (!RoutePathsWithSteinerDijkstra())
{
Status = BundlingStatus.EdgeSeparationIsTooLarge;
return;
}
FixChildParentEdges();
if (!bundlingSettings.StopAfterShortestPaths)
{
var metroGraphData = new MetroGraphData(regularEdges.Select(e => e.EdgeGeometry).ToArray(),
LooseHierarchy,
TightHierarchy,
bundlingSettings,
shortestPathRouter.Cdt,
EdgeLooseEnterable,
EdgeTightEnterable,
loosePolylineOfPort);
NodePositionsAdjuster.FixRouting(metroGraphData, bundlingSettings);
new EdgeNudger(metroGraphData, bundlingSettings).Run();
//TimeMeasurer.DebugOutput("edge bundling ended");
}
RouteSelfEdges();
FixArrowheads();
}