/// <summary>
///
/// </summary>
/// <param name="fileName"></param>
/// <returns></returns>
private static IGeometry CheckShapefile(string fileName)
{
//int count = 0;
var geoms = new List<IGeometry>();
using (ShapefileDataReader reader = new ShapefileDataReader(fileName, GeometryFactory.Floating))
{
while (reader.Read())
{
IGeometry current = reader.Geometry;
if (!current.IsValid)
{
Debug.WriteLine("Imvalid geometry found: " + current);
continue;
}
geoms.Add(current);
//if (result == null)
// result = current;
//else result = result.Union(current);
//Debug.WriteLine("Iteration => " + ++count);
}
}
IGeometry result = UnaryUnionOp.Union(geoms);
var write = new WKTWriter {Formatted = true, MaxCoordinatesPerLine = 3, Tab = 2};
Debug.WriteLine("Operation result: " + write.Write(result));
return result;
}
private IGeometry BuildGrid()
{
var lines = new ILineString[_numLines * 2];
int index = 0;
for (int i = 0; i < _numLines; i++)
{
Coordinate p0 = new Coordinate(GetRandOrdinate(), 0);
Coordinate p1 = new Coordinate(GetRandOrdinate(), GridWidth);
ILineString line = _geomFactory.CreateLineString(new [] { p0, p1 });
lines[index++] = line;
}
for (int i = 0; i < _numLines; i++)
{
Coordinate p0 = new Coordinate(0, GetRandOrdinate());
Coordinate p1 = new Coordinate(GridWidth, GetRandOrdinate());
ILineString line = _geomFactory.CreateLineString(new [] { p0, p1 });
lines[index++] = line;
}
IMultiLineString ml = _geomFactory.CreateMultiLineString(lines);
_grid = ml.Buffer(_lineWidth);
var wktWriter = new WKTWriter(2) {Formatted = true, MaxCoordinatesPerLine = 6};
if (Verbose)
Console.WriteLine(wktWriter.Write(_grid));
return _grid;
}
public static System.Data.Entity.Spatial.DbGeometry UnionAggregate(
IEnumerable<System.Data.Entity.Spatial.DbGeometry> dbGeometrys)
{
var wktReader = new WKTReader();
var geometries = dbGeometrys.Select(x => wktReader.Read(x.WellKnownValue.WellKnownText)).ToArray();
var collection = new GeometryCollection(geometries);
var wktWriter = new WKTWriter();
return System.Data.Entity.Spatial.DbGeometry.FromText(wktWriter.Write(collection));
}
public static System.Data.Entity.Spatial.DbGeometry Project(System.Data.Entity.Spatial.DbGeometry source,
ProjectionInfo pStart, ProjectionInfo pEnd)
{
var wkt = source.WellKnownValue.WellKnownText;
var wktReader = new WKTReader();
var geometry = wktReader.Read(wkt);
var featureSet = new FeatureSet();
featureSet.Features.Add(geometry.ToDotSpatial());
featureSet.Projection = pStart;
featureSet.Reproject(pEnd);
var projected =
(featureSet.Features.First().BasicGeometry as IGeometry).ToGeoAPI();
var wktWriter = new WKTWriter();
var projectedWkt = wktWriter.Write(projected);
return System.Data.Entity.Spatial.DbGeometry.FromText(projectedWkt);
}
public void FixtureSetup()
{
writer = new WKTWriter();
}
/// <summary>
/// geoJson should be feature or featureCollection. convert and project geoJson to DbGeometry
/// </summary>
/// <param name="geoJson"></param>
/// <param name="pStart"></param>
/// <param name="pEnd"></param>
/// <returns></returns>
public static System.Data.Entity.Spatial.DbGeometry ToGeometry(string geoJson, ProjectionInfo pStart,
ProjectionInfo pEnd)
{
var featureCollection = FeatureCollection(geoJson);
var geometries =
Project(featureCollection.Features.Select(feature => feature.Geometry).ToList(), pStart, pEnd);
var wktWriter = new WKTWriter();
var geoemetryColleciton = new GeometryCollection(geometries.ToArray());
var wkt = wktWriter.Write(geoemetryColleciton);
var geometry = System.Data.Entity.Spatial.DbGeometry.FromText(wkt);
return geometry;
}
/// <summary>
/// Initializes a new instance of the <see cref="WKTTest"/> class.
/// </summary>
public WKTTest() : base()
{
writer = new WKTWriter();
}
private void printFormatted(IGeometry geom)
{
WKTWriter writer = new WKTWriter();
Console.WriteLine(writer.WriteFormatted(geom));
}
/// <summary>
/// Converts a Geometry to its Well-known Text representation.
/// </summary>
/// <param name="geometry">A geometry to process.</param>
/// <param name="writer">Stream to write out the geometry's text representation.</param>
/// <remarks>
/// Geometry is written to the output stream as <Geometry Tagged Text> string (see the OpenGIS
/// Simple Features Specification).
/// </remarks>
public static void Write(IGeometry geometry, StringWriter writer)
{
WKTWriter wkt = new WKTWriter();
wkt.Write(geometry, writer);
//AppendGeometryTaggedText(geometry, writer);
}
/// <summary>
/// Returns the Well-known Text representation of this <c>Geometry</c>.
/// For a definition of the Well-known Text format, see the OpenGIS Simple
/// Features Specification.
/// </summary>
/// <returns>
/// The Well-known Text representation of this <c>Geometry</c>.
/// </returns>
public string ToText()
{
var writer = new WKTWriter(3);
return writer.Write(this);
}
public void SetUp()
{
_originalWktWriter = new WKTWriter();
_sdeStWktWriter = new SdeStWktWriter();
}
