/// <summary>
/// Creates a Node instance
/// </summary>
/// <param name="id">node name</param>
public Node(string id)
{
Label = new Label();
Label.GeometryLabel = null;
Label.Owner = this;
Attr = new NodeAttr();
attr.Id = id;
Label.Text = id; //one can change the label later
}
/// <summary>
/// Creates a Node instance
/// </summary>
/// <param name="id">node name</param>
public Node(string id)
{
this.DefaultStyleKey = typeof(Node);
Label = new Label();
Label.GeometryLabel = null;
Label.Owner = this;
Label.Text = id; // one can change the label text later - TJT: Huh???
Attr = new NodeAttr();
attr.Id = id;
}
internal static void DragLabel(GeomLabel label, Point delta)
{
label.Center += delta;
var edge = label.GeometryParent as GeomEdge;
if (edge != null)
{
CalculateAttachedSegmentEnd(label, edge);
if (!ApproximateComparer.Close(label.AttachmentSegmentEnd, label.Center))
{
IntersectionInfo x = Curve.CurveCurveIntersectionOne(label.BoundingBox.Perimeter(),
new LineSegment(
label.AttachmentSegmentEnd,
label.Center), false);
label.AttachmentSegmentStart = x != null ? x.IntersectionPoint : label.Center;
}
else
{
label.AttachmentSegmentStart = label.Center;
}
}
}
static void CalculateAttachedSegmentEnd(GeomLabel label, GeomEdge edge)
{
label.AttachmentSegmentEnd = edge.Curve[edge.Curve.ClosestParameter(label.Center)];
}
string LabelToString(Label label) {
return String.Format("{0} {1} {2}", PointToString(label.Center), DoubleToString(label.Width), DoubleToString(label.Height));
}
void WriteLabel(Label label) {
WriteAttribute(GeometryToken.Label, LabelToString(label));
}
/// <summary>
/// Creates a Node instance
/// </summary>
/// <param name="id">node name</param>
public Node(string id) {
Label = new Label();
Label.GeometryLabel = null;
Label.Owner = this;
Attr = new NodeAttr();
attr.Id = id;
Label.Text = id; //one can change the label later
}
private static IEnumerable<double> GetPossibleSides(Label.PlacementSide side, Point derivative)
{
MethodInfo methodInfo = typeof(EdgeLabelPlacement).GetMethod("GetPossibleSides", BindingFlags.Static | BindingFlags.NonPublic);
return (IEnumerable<double>)methodInfo.Invoke(null, new object[] { side, derivative });
}
/// <summary>
/// Edge constructor
/// </summary>
/// <param name="source"></param>
/// <param name="target"></param>
/// <param name="labelWidth"></param>
/// <param name="labelHeight"></param>
/// <param name="edgeThickness"></param>
public Edge(Node source, Node target, double labelWidth, double labelHeight, double edgeThickness) {
this.source = source;
this.target = target;
if (labelWidth > 0)
Label = new Label(labelWidth, labelHeight, this);
LineWidth = edgeThickness;
}
static void CalculateAttachedSegmentEnd(GeomLabel label, GeomEdge edge) {
label.AttachmentSegmentEnd = edge.Curve[edge.Curve.ClosestParameter(label.Center)];
}
internal static void DragLabel(GeomLabel label, Point delta) {
label.Center += delta;
var edge = label.GeometryParent as GeomEdge;
if (edge != null) {
CalculateAttachedSegmentEnd(label, edge);
if (!ApproximateComparer.Close(label.AttachmentSegmentEnd, label.Center)) {
IntersectionInfo x = Curve.CurveCurveIntersectionOne(label.BoundingBox.Perimeter(),
new LineSegment(
label.AttachmentSegmentEnd,
label.Center), false);
label.AttachmentSegmentStart = x != null ? x.IntersectionPoint : label.Center;
}
else
label.AttachmentSegmentStart = label.Center;
}
}
void ReadLabelFromAttribute(GeometryObject geomObj) {
string str;
if (!TryGetAttribute(GeometryToken.Label, out str)) return;
var label = new Label(geomObj);
Point center;
double width, height;
ParseLabel(str, out center, out width, out height);
label.Center = center;
label.Width = width;
label.Height = height;
var edge = geomObj as Edge;
if (edge != null) {
edge.Label = label;
}
}
void RouteEdgeWithLabel(IntEdge intEdge, Label label) {
//we allow here for the edge to cross its own label
Node sourceNode = routing.IntGraph.Nodes[intEdge.Source];
Node targetNode = routing.IntGraph.Nodes[intEdge.Target];
var sourcePort = new FloatingPort(sourceNode.BoundaryCurve, sourceNode.Center);
var targetPort = new FloatingPort(targetNode.BoundaryCurve, targetNode.Center);
ICurve labelObstacle = labelsToLabelObstacles[label];
var labelPort = new FloatingPort(labelObstacle, label.Center);
SmoothedPolyline poly0;
interactiveEdgeRouter.RouteSplineFromPortToPortWhenTheWholeGraphIsReady(sourcePort, labelPort, true, out poly0);
SmoothedPolyline poly1;
interactiveEdgeRouter.RouteSplineFromPortToPortWhenTheWholeGraphIsReady(labelPort, targetPort, true, out poly1);
Site site = poly1.HeadSite.Next;
Site lastSite = poly0.LastSite;
lastSite.Next = site;
site.Previous = lastSite;
var eg = intEdge.Edge.EdgeGeometry;
eg.SetSmoothedPolylineAndCurve(poly0);
Arrowheads.TrimSplineAndCalculateArrowheads(eg, intEdge.Edge.Source.BoundaryCurve,
intEdge.Edge.Target.BoundaryCurve, eg.Curve, false,
settings.EdgeRoutingSettings.KeepOriginalSpline);
}
static ICurve CreatObstaceOnLabel(Label label) {
var c = new Curve();
double obstacleBottom = label.Center.Y - label.Height/4;
c.AddSegment(new LineSegment(new Point(label.BoundingBox.Left, obstacleBottom),
new Point(label.BoundingBox.Right, obstacleBottom)));
Curve.ContinueWithLineSegment(c, label.BoundingBox.RightTop);
Curve.ContinueWithLineSegment(c, label.BoundingBox.LeftTop);
Curve.CloseCurve(c);
return c;
}
/// <summary>
/// creates label restore data
/// </summary>
/// <returns></returns>
public static RestoreData GetRestoreData(Label label)
{
return new LabelRestoreData(label.Center);
}