/// <summary>
/// Converts the List of Coordinates to WKT format and appends it to output stream.
/// </summary>
/// <param name="coordinates">The list of coordinates to be converted.</param>
/// <param name="writer">The output stream.</param>
/// <param name="wrap">bool value indicating whether the list of coordinates should be enclosed in parathenes.</param>
private static void AppendCoordinates(ICoordinateList coordinates, TextWriter writer, bool wrap)
{
if (coordinates.Count == 0)
{
return;
}
if (wrap)
{
writer.Write("(");
}
WktWriter.AppendCoordinate(coordinates[0], writer);
for (int i = 1; i < coordinates.Count; i++)
{
writer.Write(", ");
WktWriter.AppendCoordinate(coordinates[i], writer);
}
if (wrap)
{
writer.Write(")");
}
}
/// <summary>
/// Converts Polygon's content to WKT format and appends WKT representation to the output stream.
/// </summary>
/// <param name="polygon">The Polygon to be converted.</param>
/// <param name="writer">The output Stream to Append WKT representation to.</param>
private static void AppendPolygonText(IPolygon polygon, TextWriter writer)
{
if (polygon.ExteriorRing.Count == 0)
{
writer.Write("empty");
}
else
{
writer.Write("(");
WktWriter.AppendCoordinates(polygon.ExteriorRing, writer, true);
if (polygon.InteriorRings.Count() > 0)
{
writer.Write(",");
WktWriter.AppendCoordinates(polygon.InteriorRings.First(), writer, true);
foreach (var ring in polygon.InteriorRings.Skip(1))
{
writer.Write(",");
WktWriter.AppendCoordinates(ring, writer, true);
}
}
writer.Write(")");
}
}
/// <summary>
/// Writes specified Geometry to the TextWriter in WKT format.
/// </summary>
/// <param name="geometry">The geometry to be written.</param>
/// <param name="writer">The output Stream the Geometry will be written to.</param>
protected static void Write(IGeometry geometry, TextWriter writer)
{
if (geometry is IPoint)
{
WktWriter.AppendPointTaggedText((IPoint)geometry, writer);
}
else if (geometry is ILineString)
{
WktWriter.AppendLineStringTaggedText((ILineString)geometry, writer);
}
else if (geometry is IPolygon)
{
WktWriter.AppendPolygonTaggedText((IPolygon)geometry, writer);
}
else if (geometry is IMultiPoint)
{
WktWriter.AppendMultiPointTaggedText((IMultiPoint)geometry, writer);
}
else if (geometry is IMultiLineString)
{
WktWriter.AppendMultiLineStringTaggedText((IMultiLineString)geometry, writer);
}
else if (geometry is IMultiPolygon)
{
WktWriter.AppendMultiPolygonTaggetText((IMultiPolygon)geometry, writer);
}
else if (geometry is IGeometryCollection <IGeometry> )
{
WktWriter.AppendGeometryCollectionTaggedText((IGeometryCollection <IGeometry>)geometry, writer);
}
}
/// <summary>
/// Writes the Geometry object to the string in WKT format.
/// </summary>
/// <param name="geometry">The Geometry to be written.</param>
/// <returns>The WKT representation of the Geometry.</returns>
public static string WriteToString(IGeometry geometry)
{
StringWriter tw = new StringWriter(System.Globalization.CultureInfo.InvariantCulture);
WktWriter.Write(geometry, tw);
return(tw.ToString());
}
/// <summary>
/// Converts LineString's content to WKT and appends it to the output stream.
/// </summary>
/// <param name="linestring">The LineString to be converted.</param>
/// <param name="writer">The output Stream to Append WKT representation to.</param>
private static void AppendLineStringText(ILineString linestring, TextWriter writer)
{
if (linestring.Coordinates.Count == 0)
{
writer.Write("empty");
}
else
{
WktWriter.AppendCoordinates(linestring.Coordinates, writer, true);
}
}
/// <summary>
/// Converts Point's content to WKT format and appends it to the output stream.
/// </summary>
/// <param name="point">The Point to be converted.</param>
/// <param name="writer">The output Stream to append WKT representation to.</param>
private static void AppendPointText(IPoint point, TextWriter writer)
{
if (point.Position.Equals(Coordinate.Empty))
{
writer.Write("empty");
}
else
{
writer.Write("(");
WktWriter.AppendCoordinate(point.Position, writer);
writer.Write(")");
}
}
/// <summary>
/// Converts GeometryCollection to WKT format and appends WKT representation to the output stream.
/// </summary>
/// <param name="collection">The GeometryCollection be converted.</param>
/// <param name="writer">The output Stream to Append WKT representation to.</param>
private static void AppendGeometryCollectionTaggedText(IGeometryCollection <IGeometry> collection, TextWriter writer)
{
writer.Write("geometrycollection ");
string dimension = WktWriter.GetDimensionText(collection);
if (string.IsNullOrEmpty(dimension) == false)
{
writer.Write(dimension);
writer.Write(" ");
}
WktWriter.AppendGeometryCollectionText(collection, writer);
}
/// <summary>
/// Converts LineString to WKT format and appends WKT representation to the output stream.
/// </summary>
/// <param name="linestring">The LineString to be converted.</param>
/// <param name="writer">The output Stream to Append WKT representation to.</param>
private static void AppendLineStringTaggedText(ILineString linestring, TextWriter writer)
{
writer.Write("linestring ");
string dimension = WktWriter.GetDimensionText(linestring);
if (string.IsNullOrEmpty(dimension) == false)
{
writer.Write(dimension);
writer.Write(" ");
}
WktWriter.AppendLineStringText(linestring, writer);
}
/// <summary>
/// Converts Polygon to WKT format and appends WKT representation to the output stream.
/// </summary>
/// <param name="polygon">The Polygon to be converted.</param>
/// <param name="writer">The output Stream to Append WKT representation to.</param>
private static void AppendPolygonTaggedText(IPolygon polygon, TextWriter writer)
{
writer.Write("polygon ");
string dimension = WktWriter.GetDimensionText(polygon);
if (string.IsNullOrEmpty(dimension) == false)
{
writer.Write(dimension);
writer.Write(" ");
}
WktWriter.AppendPolygonText(polygon, writer);
}
/// <summary>
/// Converts MultiPolygon to WKT format and appends WKT representation to the output stream.
/// </summary>
/// <param name="mp">The Multipolygon to be converted.</param>
/// <param name="writer">The output Stream to Append WKT representation to.</param>
private static void AppendMultiPolygonTaggetText(IMultiPolygon mp, TextWriter writer)
{
writer.Write("multipolygon ");
string dimension = WktWriter.GetDimensionText(mp);
if (string.IsNullOrEmpty(dimension) == false)
{
writer.Write(dimension);
writer.Write(" ");
}
WktWriter.AppendMultiPolygonText(mp, writer);
}
/// <summary>
/// Converts MultiLineString to WKT format and appends WKT representation to the output stream.
/// </summary>
/// <param name="mls">The MultiLineString to be converted.</param>
/// <param name="writer">The output Stream to Append WKT representation to.</param>
private static void AppendMultiLineStringTaggedText(IMultiLineString mls, TextWriter writer)
{
writer.Write("multilinestring ");
string dimension = WktWriter.GetDimensionText(mls);
if (string.IsNullOrEmpty(dimension) == false)
{
writer.Write(dimension);
writer.Write(" ");
}
WktWriter.AppendMultiLineStringText(mls, writer);
}
/// <summary>
/// Converts MultiPoint to WKT format and appends WKT representation to the output stream.
/// </summary>
/// <param name="multipoint">The MultiPoint to be converted.</param>
/// <param name="writer">The output Stream to Append WKT representation to.</param>
private static void AppendMultiPointTaggedText(IMultiPoint multipoint, TextWriter writer)
{
writer.Write("multipoint ");
string dimension = WktWriter.GetDimensionText(multipoint);
if (string.IsNullOrEmpty(dimension) == false)
{
writer.Write(dimension);
writer.Write(" ");
}
WktWriter.AppendMultiPointText(multipoint, writer);
}
/// <summary>
/// Converts GeometryCollection's content to WKT format and appends WKT representation to the output stream.
/// </summary>
/// <param name="collection">The GeometryCollection to be converted.</param>
/// <param name="writer">The output Stream to Append WKT representation to.</param>
private static void AppendGeometryCollectionText(IGeometryCollection <IGeometry> collection, TextWriter writer)
{
if (collection.Geometries.Count() == 0)
{
writer.Write("empty");
}
else
{
writer.Write("(");
WktWriter.Write(collection.Geometries.First(), writer);
foreach (var geometry in collection.Geometries.Skip(1))
{
writer.Write(",");
WktWriter.Write(geometry, writer);
}
writer.Write(")");
}
}
/// <summary>
/// Converts MultiPolygon's content to WKT format and appends WKT representation to the output stream.
/// </summary>
/// <param name="multipolygon">The MultiPolygon to be converted.</param>
/// <param name="writer">The output Stream to Append WKT representation to.</param>
private static void AppendMultiPolygonText(IMultiPolygon multipolygon, TextWriter writer)
{
if (multipolygon.Geometries.Count() == 0)
{
writer.Write("empty");
}
else
{
writer.Write("(");
WktWriter.AppendPolygonText(multipolygon.Geometries.First(), writer);
foreach (var polygon in multipolygon.Geometries.Skip(1))
{
writer.Write(",");
WktWriter.AppendPolygonText(polygon, writer);
}
writer.Write(")");
}
}
/// <summary>
/// Converts MultiLineString's content to WKT format and appends WKT representation to the output stream.
/// </summary>
/// <param name="mls">The MultiLIneString to be converted.</param>
/// <param name="writer">The output Stream to Append WKT representation to.</param>
private static void AppendMultiLineStringText(IMultiLineString mls, TextWriter writer)
{
if (mls.Geometries.Count() == 0)
{
writer.Write("empty");
}
else
{
writer.Write("(");
WktWriter.AppendLineStringText(mls.Geometries.First(), writer);
foreach (var linestring in mls.Geometries.Skip(1))
{
writer.Write(",");
WktWriter.AppendLineStringText(linestring, writer);
}
writer.Write(")");
}
}
/// <summary>
/// Converts MultiPoint's content to WKT format and appends WKT representation to the output stream.
/// </summary>
/// <param name="multipoint">The MultiPoint to be converted.</param>
/// <param name="writer">The output Stream to Append WKT representation to.</param>
private static void AppendMultiPointText(IMultiPoint multipoint, TextWriter writer)
{
if (multipoint.Geometries.Count() == 0)
{
writer.Write("empty");
}
else
{
writer.Write("(");
if (multipoint.Geometries.Count() > 0)
{
WktWriter.AppendPointText(multipoint.Geometries.First(), writer);
foreach (var point in multipoint.Geometries.Skip(1))
{
writer.Write(",");
WktWriter.AppendPointText(point, writer);
}
}
writer.Write(")");
}
}
public void Dispose_ClosesOutputStreamIfWritingToFiles()
{
string filename = "TestFiles\\wktwriter-closes-output-filestream-test.wkt";
File.Delete(filename);
WktWriterSettings settings = new WktWriterSettings();
WktWriter target = new WktWriter(filename, settings);
target.Dispose();
FileStream testStream = null;
Assert.DoesNotThrow(() => testStream = new FileStream(filename, FileMode.Open, FileAccess.ReadWrite));
testStream.Dispose();
}
public void Constructor_PathSettings_CreatesOutputFile()
{
string filename = "TestFiles\\wktwriter-constructor-creates-output-test.wkt";
File.Delete(filename);
WktWriterSettings settings = new WktWriterSettings();
using (WktWriter target = new WktWriter(filename, settings)) {
;
}
Assert.True(File.Exists(filename));
}
public void Dispose_ClosesOutputStreamIfWritingToStream()
{
MemoryStream stream = new MemoryStream();
WktWriter target = new WktWriter(stream, new WktWriterSettings());
target.Dispose();
Assert.False(stream.CanRead);
}
private void TestWriteGeometry(IGeometry geometry, string expectedWkt)
{
MemoryStream stream = new MemoryStream();
using (WktWriter writer = new WktWriter(stream, new WktWriterSettings())) {
writer.Write(geometry);
}
using (TextReader tr = new StreamReader(new MemoryStream(stream.ToArray()))) {
string wkt = tr.ReadToEnd();
Assert.Equal(expectedWkt, wkt, StringComparer.InvariantCultureIgnoreCase);
}
}
/// <summary>
/// Writes the Geometry object in the WKT format to the output.
/// </summary>
/// <param name="geometry">The geometry to write.</param>
public void Write(IGeometry geometry)
{
WktWriter.Write(geometry, _writer);
}
public void Construcotor_StreamSettings_SetsSettingsAndMakeThemReadOnly()
{
WktWriterSettings settings = new WktWriterSettings();
using (WktWriter target = new WktWriter(new MemoryStream(), settings)) {
Assert.Same(settings, target.Settings);
Assert.True(settings.IsReadOnly);
}
}
