InteractiveEdgeRouter CreateInteractiveEdgeRouter(IEnumerable<Shape> obstacleShapes) {
//we need to create a set here because one loose polyline can hold several original shapes
var loosePolys = new Set<Polyline>(obstacleShapes.Select(sh => shapesToTightLooseCouples[sh].LooseShape.BoundaryCurve as Polyline));
var router = new InteractiveEdgeRouter {
VisibilityGraph = visGraph,
TightHierarchy =
CreateTightObstacleHierarachy(obstacleShapes),
LooseHierarchy =
CreateLooseObstacleHierarachy(loosePolys),
UseSpanner = true,
LookForRoundedVertices = true,
TightPadding = tightPadding,
LoosePadding = LoosePadding,
UseEdgeLengthMultiplier = UseEdgeLengthMultiplier,
UsePolylineEndShortcutting = UsePolylineEndShortcutting,
UseInnerPolylingShortcutting = UseInnerPolylingShortcutting,
AllowedShootingStraightLines = AllowedShootingStraightLines,
CacheCorners = CacheCornersForSmoothing,
};
router.AddActivePolygons(loosePolys.Select(polyline => new Polygon(polyline)));
return router;
}
void ScaleDownLooseHierarchy(InteractiveEdgeRouter interactiveEdgeRouter, Set<Shape> obstacleShapes) {
var loosePolys = new List<Polyline>();
foreach (var obstacleShape in obstacleShapes) {
var tl = shapesToTightLooseCouples[obstacleShape];
loosePolys.Add( InteractiveObstacleCalculator.LoosePolylineWithFewCorners(tl.TightPolyline, tl.Distance / BundleRouter.SuperLoosePaddingCoefficient));
}
interactiveEdgeRouter.LooseHierarchy=CreateLooseObstacleHierarachy(loosePolys);
interactiveEdgeRouter.ClearActivePolygons();
interactiveEdgeRouter.AddActivePolygons(loosePolys.Select(polyline => new Polygon(polyline)));
}