Exemplo n.º 1
0
 /// <summary>
 /// Insert nodes for all intersections on the edges of a Geometry.
 /// Label the created nodes the same as the edge label if they do not already have a label.
 /// This allows nodes created by either self-intersections or
 /// mutual intersections to be labelled.
 /// Endpoint nodes will already be labelled from when they were inserted.
 /// Precondition: edge intersections have been computed.
 /// </summary>
 /// <param name="geomGraph"></param>
 /// <param name="argIndex"></param>
 public void ComputeIntersectionNodes(GeometryGraph geomGraph, int argIndex)
 {
     foreach (Edge e in geomGraph.Edges)
     {
         Location eLoc = e.Label.GetLocation(argIndex);
         foreach (EdgeIntersection ei in e.EdgeIntersectionList)
         {
             RelateNode n = (RelateNode)_nodes.AddNode(ei.Coordinate);
             if (eLoc == Location.Boundary)
             {
                 n.SetLabelBoundary(argIndex);
             }
             else if (n.Label.IsNull(argIndex))
             {
                 n.SetLabel(argIndex, Location.Interior);
             }
         }
     }
 }
Exemplo n.º 2
0
 /// <summary>
 /// For all intersections on the edges of a Geometry,
 /// label the corresponding node IF it doesn't already have a label.
 /// This allows nodes created by either self-intersections or
 /// mutual intersections to be labelled.
 /// Endpoint nodes will already be labelled from when they were inserted.
 /// </summary>
 /// <param name="argIndex"></param>
 private void LabelIntersectionNodes(int argIndex)
 {
     foreach (Edge e in _arg[argIndex].Edges)
     {
         Location eLoc = e.Label.GetLocation(argIndex);
         foreach (EdgeIntersection ei in e.EdgeIntersectionList)
         {
             RelateNode n = (RelateNode)_nodes.Find(ei.Coordinate);
             if (n.Label.IsNull(argIndex))
             {
                 if (eLoc == Location.Boundary)
                 {
                     n.SetLabelBoundary(argIndex);
                 }
                 else
                 {
                     n.SetLabel(argIndex, Location.Interior);
                 }
             }
         }
     }
 }