/// <summary>
/// Initializes a new instance of the <see cref="SweepLine" /> class.
/// </summary>
/// <param name="source">The source coordinates.</param>
/// <param name="precisionModel">The precision model.</param>
/// <exception cref="System.ArgumentNullException">The source is null.</exception>
public SweepLine(IEnumerable <IList <Coordinate> > source, PrecisionModel precisionModel = null)
{
if (source == null)
{
throw new ArgumentNullException("source", "The source is null.");
}
_source = new List <Coordinate>();
_endpoints = new List <Int32>();
foreach (IList <Coordinate> coordinateList in source)
{
if (coordinateList == null || coordinateList.Count < 2)
{
continue;
}
if (coordinateList.First() == coordinateList.Last())
{
_endpoints.Add(_source.Count);
}
for (Int32 i = 0; i <= coordinateList.Count - 1; i++)
{
_source.Add(coordinateList[i]);
}
if (coordinateList.First() == coordinateList.Last())
{
_endpoints.Add(_source.Count - 2);
}
}
_tree = new SweepLineTree(precisionModel ?? PrecisionModel.Default);
_coordinateComparer = new CoordinateComparer();
}
/// <summary>
/// Initializes a new instance of the <see cref="SweepLine" /> class.
/// </summary>
/// <param name="source">The source coordinates representing a line string.</param>
/// <param name="precisionModel">The precision model.</param>
/// <exception cref="System.ArgumentNullException">The source is null.</exception>
public SweepLine(IList <Coordinate> source, PrecisionModel precisionModel = null)
{
if (source == null)
{
throw new ArgumentNullException("source", "The source is null.");
}
_source = source;
_tree = new SweepLineTree(precisionModel ?? PrecisionModel.Default);
_coordinateComparer = new CoordinateComparer();
if (source.Count >= 2 && source.First() == source.Last())
{
_endpoints = new List <Int32> {
0, source.Count - 2
}
}
;
}
/// <summary>
/// Initializes a new instance of the <see cref="SweepLine" /> class.
/// </summary>
/// <param name="source">The source coordinates representing a line string.</param>
/// <param name="precisionModel">The precision model.</param>
/// <exception cref="System.ArgumentNullException">The source is null.</exception>
public SweepLine(IEnumerable <Coordinate> source, PrecisionModel precisionModel)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
this.source = new List <Coordinate>(source.Elements());
this.tree = new SweepLineTree(precisionModel ?? PrecisionModel.Default);
this.coordinateComparer = new CoordinateComparer();
if (this.source.Count >= 2 && this.source[0] == this.source[this.source.Count - 1])
{
this.endpoints = new List <Int32> {
0, this.source.Count - 2
}
}
;
}
/// <summary>
/// Initializes a new instance of the <see cref="SweepLine" /> class.
/// </summary>
/// <param name="source">The source coordinates.</param>
/// <param name="precisionModel">The precision model.</param>
/// <exception cref="System.ArgumentNullException">The source is null.</exception>
public SweepLine(IEnumerable <IEnumerable <Coordinate> > source, PrecisionModel precisionModel)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
List <Coordinate> sourceList = new List <Coordinate>();
this.endpoints = new List <Int32>();
foreach (IEnumerable <Coordinate> collection in source)
{
Int32 collectionCount = collection.Count();
if (collection == null || collectionCount < 2)
{
continue;
}
Boolean firstEqualsLast = collection.FirstElement() == collection.LastElement();
if (firstEqualsLast)
{
this.endpoints.Add(sourceList.Count);
}
sourceList.AddRange(collection.Elements());
if (firstEqualsLast)
{
this.endpoints.Add(sourceList.Count - 2);
}
}
this.source = sourceList;
this.tree = new SweepLineTree(precisionModel);
this.coordinateComparer = new CoordinateComparer();
}
