public static FeatureDataRow LocatePolygon2(SharpMap.Geometries.Point punto, SharpMap.Data.FeatureDataTable fdt)
{
FeatureDataRow fdr = null;
if ((fdt as DataTable).Rows.Count == 1)
{
fdr = (FeatureDataRow)(fdt as DataTable).Rows[0];
}
else
{
GisSharpBlog.NetTopologySuite.Geometries.GeometryFactory f = new GeometryFactory(new PrecisionModel());
foreach (DataRow r in (fdt as DataTable).Rows)
{
if ((r as FeatureDataRow).Geometry.GetType() == typeof(SharpMap.Geometries.MultiPolygon))
{
// Doble cast: de Geometria a MultiPolygon, y de DataRow a FeatureDataRow.
SharpMap.Geometries.MultiPolygon SharpMultiPol = (SharpMap.Geometries.MultiPolygon)(r as FeatureDataRow).Geometry;
GisSharpBlog.NetTopologySuite.Geometries.Geometry[] NTSGeom = GeometryConverter.ToNTSGeometry(new SharpMap.Geometries.Geometry[1] {
SharpMultiPol
}, f);
GisSharpBlog.NetTopologySuite.Geometries.MultiPolygon NTSMultiPol = (GisSharpBlog.NetTopologySuite.Geometries.MultiPolygon)NTSGeom[0];
if (NTSMultiPol.Contains(new GisSharpBlog.NetTopologySuite.Geometries.Point(punto.X, punto.Y)) == true)
{
fdr = (FeatureDataRow)r;
break;
}
}
}
}
return(fdr);
}
internal static Geometries.MultiPolygon ToSharpMapMultiPolygon(MultiPolygon multiPolygon)
{
Geometries.MultiPolygon collection = new Geometries.MultiPolygon();
foreach (Polygon polygon in multiPolygon.Geometries)
{
collection.Polygons.Add(ToSharpMapPolygon(polygon));
}
return(collection);
}
private static IMultiPolygon ReadMultiPolygon(JsonTextReader jreader)
{
if (jreader == null)
{
throw new ArgumentNullException("reader", "A valid JSON reader object is required.");
}
IMultiPolygon areas = null;
if (jreader.TokenClass == JsonTokenClass.Array)
{
jreader.ReadToken(JsonTokenClass.Array);
List <IPolygon> polygons = new List <IPolygon>();
while (jreader.TokenClass == JsonTokenClass.Array)
{
jreader.ReadToken(JsonTokenClass.Array);
//Read the outer shell
ILinearRing shell = null;
if (jreader.TokenClass == JsonTokenClass.Array)
{
ICoordinate[] coordinates = new ICoordinate[] { };
Read(ref coordinates, jreader);
shell = new GisSharpBlog.NetTopologySuite.Geometries.LinearRing(coordinates);
}
//Read all the holes
List <ILinearRing> list = new List <ILinearRing>();
while (jreader.TokenClass == JsonTokenClass.Array)
{
ICoordinate[] coordinates = new ICoordinate[] { };
Read(ref coordinates, jreader);
ILinearRing hole = new GisSharpBlog.NetTopologySuite.Geometries.LinearRing(coordinates);
list.Add(hole);
}
jreader.ReadToken(JsonTokenClass.EndArray);
//An outer shell was found so a polygon can be created
if (shell != null)
{
IPolygon area = new GisSharpBlog.NetTopologySuite.Geometries.Polygon(shell, list.ToArray());
polygons.Add(area);
}
}
jreader.ReadToken(JsonTokenClass.EndArray);
areas = new GisSharpBlog.NetTopologySuite.Geometries.MultiPolygon(polygons.ToArray());
}
return(areas);
}
private static MultiPolygon ReadMultiPolygon(JsonTextReader jreader)
{
if (jreader == null)
throw new ArgumentNullException("reader", "A valid JSON reader object is required.");
MultiPolygon areas = null;
if (jreader.TokenClass == JsonTokenClass.Array)
{
jreader.ReadToken(JsonTokenClass.Array);
List<Polygon> polygons = new List<Polygon>();
while (jreader.TokenClass == JsonTokenClass.Array)
{
jreader.ReadToken(JsonTokenClass.Array);
//Read the outer shell
LinearRing shell = null;
if (jreader.TokenClass == JsonTokenClass.Array)
{
Coordinate[] coordinates = new Coordinate[] { };
Read(ref coordinates, jreader);
shell = new LinearRing(coordinates);
}
//Read all the holes
List<LinearRing> list = new List<LinearRing>();
while (jreader.TokenClass == JsonTokenClass.Array)
{
Coordinate[] coordinates = new Coordinate[] { };
Read(ref coordinates, jreader);
LinearRing hole = new LinearRing(coordinates);
list.Add(hole);
}
jreader.ReadToken(JsonTokenClass.EndArray);
//An outer shell was found so a polygon can be created
if (shell != null)
{
Polygon area = null;
if (list.Count > 0)
area = new Polygon(shell, list.ToArray());
else
area = new Polygon(shell);
polygons.Add(area);
}
}
jreader.ReadToken(JsonTokenClass.EndArray);
areas = new MultiPolygon(polygons.ToArray());
}
return areas;
}
public static void Write(MultiPolygon areas, TextWriter writer)
{
if (areas == null)
return;
if (writer == null)
throw new ArgumentNullException("writer", "A valid text writer object is required.");
JsonTextWriter jwriter = new JsonTextWriter(writer);
Write(areas, jwriter);
}
public static void Write(MultiPolygon areas, JsonTextWriter jwriter)
{
if (areas == null)
return;
if (jwriter == null)
throw new ArgumentNullException("jwriter", "A valid JSON writer object is required.");
jwriter.WriteStartObject();
jwriter.WriteMember("type");
jwriter.WriteString("MultiPolygon");
jwriter.WriteMember("coordinates");
jwriter.WriteStartArray();
foreach (Polygon area in areas.Geometries)
{
jwriter.WriteStartArray();
//Write the exterior boundary or shell
Write(area.Shell.Coordinates, jwriter);
//Write all the holes
foreach (LineString hole in area.Holes)
{
Write(hole.Coordinates, jwriter);
}
jwriter.WriteEndArray();
}
jwriter.WriteEndArray();
jwriter.WriteEndObject();
}
public InMemoryGISMultiPolygonFeature(Polygon[] polygons)
{
Shape = new MultiPolygon(polygons);
}
internal static Geometries.MultiPolygon ToSharpMapMultiPolygon(MultiPolygon multiPolygon)
{
Geometries.MultiPolygon collection = new Geometries.MultiPolygon();
foreach (Polygon polygon in multiPolygon.Geometries)
collection.Polygons.Add(ToSharpMapPolygon(polygon));
return collection;
}