/// <summary>
/// Initializes a new instance of the <see cref="GeometryComponentFilterImpl"/> class.
/// </summary>
/// <param name="sequencer">The sequencer.</param>
internal GeometryComponentFilterImpl(LineSequencer sequencer)
{
this.sequencer = sequencer;
}
/// <summary>
/// Initializes a new instance of the <see cref="GeometryComponentFilterImpl"/> class.
/// </summary>
/// <param name="sequencer">The sequencer.</param>
internal GeometryComponentFilterImpl(LineSequencer sequencer)
{
this.sequencer = sequencer;
}
/// <summary>
///
/// </summary>
/// <param name="inputWKT"></param>
/// <param name="expectedWKT"></param>
private void RunLineSequencer(String[] inputWKT, String expectedWKT)
{
try
{
IList<IGeometry> inputGeoms = FromWKT(inputWKT);
LineSequencer sequencer = new LineSequencer();
sequencer.Add(inputGeoms);
if (!sequencer.IsSequenceable())
Assert.IsNull(expectedWKT);
else
{
IGeometry expected = rdr.Read(expectedWKT);
IGeometry result = sequencer.GetSequencedLineStrings();
bool isTrue = expected.EqualsExact(result);
Assert.IsTrue(isTrue);
bool isSequenced = LineSequencer.IsSequenced(result);
Assert.IsTrue(isSequenced);
}
}
catch (Exception ex) { Debug.WriteLine(ex.ToString()); throw; }
}
/// <summary>
/// Takes the path returned from QuickGraph library and uses the
/// list of coordinates to reconstruct the path into a geometric
/// "shape"
/// </summary>
/// <param name="paths">Shortest path from the QucikGraph Library</param>
/// <returns>
/// A <see cref="ILineString"/> or a <see cref="IMultiLineString"/>
/// with all the elements of the graph that composes the shortest path,
/// sequenced using a <see cref="LineSequencer"/>.
/// </returns>
private IGeometry BuildString(ICollection<IEdge<ICoordinate>> paths)
{
// if the path has no links then return a null reference
if (paths.Count < 1)
return null;
var collector = new LineSequencer();
foreach (var path in paths)
{
var src = path.Source;
var dst = path.Target;
foreach (var str in strings)
{
if (IsBound(str, src) && IsBound(str, dst))
collector.Add(str);
}
}
var sequence = collector.GetSequencedLineStrings();
return sequence;
}