/// <summary>
/// If the feature type is specified, then this will automatically generate a new feature from the specified coordinates.
/// This will not work unless the featuretype is specified.
/// </summary>
/// <param name="self">This IFeatureList</param>
/// <param name="points">
/// The list or array of coordinates to build into a new feature.
/// If the feature type is point, then this will create separate features for each coordinate.
/// For polygons, all the points will be assumed to be in the shell.
/// </param>
/// <exception cref="UnspecifiedFeaturetypeException">Thrown if the current FeatureType for the shapefile is unspecified.</exception>
public static void Add(this IFeatureList self, IEnumerable <Coordinate> points)
{
switch (self.Parent.FeatureType)
{
case FeatureType.Unspecified:
throw new UnspecifiedFeaturetypeException();
case FeatureType.Point:
self.SuspendEvents();
foreach (Coordinate point in points)
{
self.Add(new Feature(new Point(point)));
}
self.ResumeEvents();
break;
case FeatureType.Line:
self.Add(new Feature(new LineString(points as Coordinate[])));
break;
case FeatureType.Polygon:
self.Add(new Feature(new Polygon(new LinearRing(points as Coordinate[]))));
break;
case FeatureType.MultiPoint:
self.Add(new Feature(new MultiPoint(points.CastToPointArray())));
break;
}
}
/// <summary>
/// If the feature type is specified, then this will automatically generate a new feature from the specified coordinates.
/// This will not work unless the featuretype is specified.
/// </summary>
/// <param name="self">This IFeatureList</param>
/// <param name="points">
/// The list or array of coordinates to build into a new feature.
/// If the feature type is point, then this will create separate features for each coordinate.
/// For polygons, all the points will be assumed to be in the shell.
/// </param>
/// <exception cref="UnspecifiedFeaturetypeException">Thrown if the current FeatureType for the shapefile is unspecified.</exception>
public static void Add(this IFeatureList self, IEnumerable <Coordinate> points)
{
if (self.Parent.FeatureType == FeatureType.Unspecified)
{
throw new UnspecifiedFeaturetypeException();
}
if (self.Parent.FeatureType == FeatureType.Point)
{
self.SuspendEvents();
foreach (Coordinate point in points)
{
self.Add(new Feature(new Point(point)));
}
self.ResumeEvents();
}
if (self.Parent.FeatureType == FeatureType.Line)
{
self.Add(new Feature(new LineString(points)));
}
if (self.Parent.FeatureType == FeatureType.Polygon)
{
self.Add(new Feature(new Polygon(points)));
}
if (self.Parent.FeatureType == FeatureType.MultiPoint)
{
self.Add(new Feature(new MultiPoint(points)));
}
}
/// <summary>
/// Creates a new FeatureSet using a given list of IFeatures.
/// This will copy the existing features, rather than removing
/// them from their parent feature set.
/// </summary>
/// <param name="inFeatures">The list of IFeatures</param>
public FeatureSet(IList<IFeature> inFeatures)
{
_progressHandler = Components.DataManager.DefaultDataManager.ProgressHandler;
_progressMeter = new ProgressMeter(_progressHandler);
_dataTable = new DataTable();
_dataTable.RowDeleted += DataTableRowDeleted;
if (inFeatures.Count > 0)
{
FeatureType = inFeatures[0].FeatureType;
}
_features = new FeatureList(this);
if (inFeatures.Count > 0)
{
if (inFeatures[0].ParentFeatureSet != null)
{
CopyTableSchema(inFeatures[0].ParentFeatureSet);
}
else
{
if (inFeatures[0].DataRow != null)
{
CopyTableSchema(inFeatures[0].DataRow.Table);
}
}
_features.SuspendEvents();
foreach (IFeature f in inFeatures)
{
IFeature myFeature = f.Copy();
_features.Add(myFeature);
}
_features.ResumeEvents();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="FeatureSet"/> class.
/// Creates a new FeatureSet using a given list of IFeatures.
/// This will copy the existing features, rather than removing
/// them from their parent feature set.
/// </summary>
/// <param name="inFeatures">
/// The list of IFeatures
/// </param>
public FeatureSet(IList<IFeature> inFeatures)
: this()
{
_dataTable = new DataTable();
_dataTable.RowDeleted += DataTableRowDeleted;
if (inFeatures.Count > 0)
{
FeatureType = inFeatures[0].FeatureType;
}
_features = new FeatureList(this);
if (inFeatures.Count > 0)
{
if (inFeatures[0].ParentFeatureSet != null)
{
CopyTableSchema(inFeatures[0].ParentFeatureSet);
}
else
{
if (inFeatures[0].DataRow != null)
{
CopyTableSchema(inFeatures[0].DataRow.Table);
}
}
_features.SuspendEvents();
foreach (IFeature f in inFeatures)
{
IFeature myFeature = f.Copy();
_features.Add(myFeature);
}
_features.ResumeEvents();
}
}
protected void FeaturesFromVertices()
{
_features = new FeatureList(this);
_features.IncludeAttributes = false; // load these on demand later.
_features.SuspendEvents();
for (int shp = 0; shp < ShapeIndices.Count; shp++)
{
_features.Add(GetFeature(shp));
}
_features.ResumeEvents();
_features.IncludeAttributes = true; // from this point on, any features that get added will also add a datarow to the data-Table.
}