/// <summary>
/// Label an isolated node with its relationship to the target point.
/// </summary>
/// <param name="n"></param>
/// <param name="targetIndex"></param>
private void LabelIsolatedNode(GraphComponent n, int targetIndex)
{
LocationType loc = _ptLocator.Locate(n.Coordinate, _arg[targetIndex].Geometry);
n.Label.SetAllLocations(targetIndex, loc);
}
/// <summary>
/// Label an isolated edge of a graph with its relationship to the target point.
/// If the target has dim 2 or 1, the edge can either be in the interior or the exterior.
/// If the target has dim 0, the edge must be in the exterior.
/// </summary>
/// <param name="e"></param>
/// <param name="targetIndex"></param>
/// <param name="target"></param>
private void LabelIsolatedEdge(GraphComponent e, int targetIndex, IGeometry target)
{
// this won't work for GeometryCollections with both dim 2 and 1 geoms
if (target.Dimension > 0)
{
// since edge is not in boundary, may not need the full generality of PointLocator?
// Possibly should use ptInArea locator instead? We probably know here
// that the edge does not touch the bdy of the target Geometry
LocationType loc = _ptLocator.Locate(e.Coordinate, target);
e.Label.SetAllLocations(targetIndex, loc);
}
else e.Label.SetAllLocations(targetIndex, LocationType.Exterior);
}
