void ExtendVisibilityGraphToLocation(Point location) {
if (VisibilityGraph == null)
VisibilityGraph = new VisibilityGraph();
List<Polygon> addedPolygons = null;
if (!activeRectangle.Contains(location)) {
if (activeRectangle.IsEmpty)
activeRectangle = new Rectangle(SourcePort.Location, location);
else
activeRectangle.Add(location);
addedPolygons = GetAddedPolygonesAndMaybeExtendActiveRectangle();
foreach (Polygon polygon in addedPolygons)
VisibilityGraph.AddHole(polygon.Polyline);
}
if (addedPolygons == null || addedPolygons.Count == 0) {
if (targetVisibilityVertex != null)
VisibilityGraph.RemoveVertex(targetVisibilityVertex);
CalculateEdgeTargetVisibilityGraph(location);
}
else {
RemovePointVisibilityGraphs();
var visibilityGraphGenerator = new InteractiveTangentVisibilityGraphCalculator(addedPolygons,
activePolygons,
VisibilityGraph);
visibilityGraphGenerator.Run();
activePolygons.AddRange(addedPolygons);
CalculateEdgeTargetVisibilityGraph(location);
CalculateSourcePortVisibilityGraph();
}
}
void ExtendVisibilityGraphToTargetBoundaryPort(Point takenOutTargetPortLocation) {
List<Polygon> addedPolygons = null;
if (VisibilityGraph == null)
VisibilityGraph = new VisibilityGraph();
if (!activeRectangle.Contains(takenOutTargetPortLocation) ||
!activeRectangle.Contains(TargetLoosePolyline.BoundingBox)) {
if (activeRectangle.IsEmpty) {
activeRectangle = TargetLoosePolyline.BoundingBox;
activeRectangle.Add(SourcePort.Location);
activeRectangle.Add(StartPointOfEdgeRouting);
activeRectangle.Add(takenOutTargetPortLocation);
} else {
activeRectangle.Add(takenOutTargetPortLocation);
activeRectangle.Add(TargetLoosePolyline.BoundingBox);
}
addedPolygons = GetAddedPolygonesAndMaybeExtendActiveRectangle();
foreach (Polygon polygon in addedPolygons)
VisibilityGraph.AddHole(polygon.Polyline);
}
if (addedPolygons == null) {
if (targetVisibilityVertex != null)
VisibilityGraph.RemoveVertex(targetVisibilityVertex);
CalculateEdgeTargetVisibilityGraph(takenOutTargetPortLocation);
} else {
RemovePointVisibilityGraphs();
var visibilityGraphGenerator = new InteractiveTangentVisibilityGraphCalculator(addedPolygons,
activePolygons,
VisibilityGraph);
visibilityGraphGenerator.Run();
activePolygons.AddRange(addedPolygons);
CalculateEdgeTargetVisibilityGraph(takenOutTargetPortLocation);
CalculateSourcePortVisibilityGraph();
}
}
internal void CalculateWholeVisibilityGraphOnExistingGraph() {
activePolygons = new List<Polygon>(AllPolygons());
foreach (Polyline polylineLocal in ObstacleCalculator.LooseObstacles)
VisibilityGraph.AddHole(polylineLocal);
AlgorithmBase visibilityGraphGenerator;
if (UseSpanner) {
visibilityGraphGenerator = new ConeSpanner(ObstacleCalculator.LooseObstacles, VisibilityGraph)
{ConeAngle = ConeSpannerAngle};
}
else {
visibilityGraphGenerator = new InteractiveTangentVisibilityGraphCalculator(new List<Polygon>(),
activePolygons,
visibilityGraph);
}
visibilityGraphGenerator.Run();
}
/*
void ShowPolylineAndObstaclesWithLineSeg(LineSegment lineSegment)
{
var ls = GetDebugCurves();
ls.Add(new DebugCurve(2,"pink", lineSegment));
LayoutAlgorithmSettings.ShowDebugCurvesEnumeration(ls);
}
*/
void ExtendVisibilityGraphToLocationOfTargetFloatingPort(Polyline portLoosePolyline) {
if (VisibilityGraph == null)
VisibilityGraph = new VisibilityGraph();
List<Polygon> addedPolygons = null;
Point targetLocation = targetPort.Location;
if (!activeRectangle.Contains(targetLocation)) {
if (activeRectangle.IsEmpty)
activeRectangle = new Rectangle(SourcePort.Location, targetLocation);
else
activeRectangle.Add(targetLocation);
addedPolygons = GetAddedPolygonesAndMaybeExtendActiveRectangle();
foreach (Polygon polygon in addedPolygons)
VisibilityGraph.AddHole(polygon.Polyline);
}
if (addedPolygons == null) {
if (targetVisibilityVertex != null)
VisibilityGraph.RemoveVertex(targetVisibilityVertex);
CalculateEdgeTargetVisibilityGraphForFloatingPort(targetLocation, portLoosePolyline);
if (SourceVisibilityVertex == null)
CalculateSourcePortVisibilityGraph();
}
else {
RemovePointVisibilityGraphs();
var visibilityGraphGenerator = new InteractiveTangentVisibilityGraphCalculator(addedPolygons,
activePolygons,
VisibilityGraph);
visibilityGraphGenerator.Run();
activePolygons.AddRange(addedPolygons);
CalculateEdgeTargetVisibilityGraphForFloatingPort(targetLocation, portLoosePolyline);
CalculateSourcePortVisibilityGraph();
}
}
