/// <summary>
///
/// </summary>
/// <param name="geometry"></param>
/// <returns></returns>
protected ShapeGeometryTypes GetShapeType(Geometry geometry)
{
if (geometry is Point)
return ShapeGeometryTypes.Point;
else if (geometry is LinearRing)
return ShapeGeometryTypes.LineString;
else if (geometry is LineString)
return ShapeGeometryTypes.LineString;
else if (geometry is Polygon)
return ShapeGeometryTypes.Polygon;
else if (geometry is MultiPoint)
return ShapeGeometryTypes.MultiPoint;
else if (geometry is MultiLineString)
return ShapeGeometryTypes.LineString;
else if (geometry is MultiPolygon)
return ShapeGeometryTypes.Polygon;
else throw new NotSupportedException("Unsupported Geometry implementation:" + geometry.GetType());
}
/// <summary>
///
/// </summary>
/// <param name="geometry"></param>
/// <param name="leWriter"></param>
/// <param name="beWriter"></param>
protected void Write(Geometry geometry, BinaryWriter leWriter, BigEndianBinaryWriter beWriter)
{
WriteFeatureHeader(geometry, beWriter);
if (geometry is Point)
shapeWriter.Write(geometry as Point, leWriter);
else if (geometry is LineString)
shapeWriter.Write(geometry as LineString, leWriter);
else if (geometry is Polygon)
shapeWriter.Write(geometry as Polygon, leWriter);
else if (geometry is MultiPoint)
shapeWriter.Write(geometry as MultiPoint, leWriter);
else if (geometry is MultiLineString)
shapeWriter.Write(geometry as MultiLineString, leWriter);
else if (geometry is MultiPolygon)
shapeWriter.Write(geometry as MultiPolygon, leWriter);
else throw new NotSupportedException("Unsupported Geometry implementation:" + geometry.GetType());
}
/// <summary>
///
/// </summary>
/// <param name="geometry"></param>
/// <param name="beWriter"></param>
protected void WriteFeatureHeader(Geometry geometry, BigEndianBinaryWriter beWriter)
{
// Write record number (big endian)
beWriter.WriteIntBE((int)++recordCounter);
// Write content length (big endian)
int contentLength = shapeWriter.GetBytesLength(geometry);
beWriter.WriteIntBE((int)(contentLength / 2)); // Write length in 16 bit words!
}
/// <summary>
/// Returns a list containing a Coordinate from each Polygon, LineString, and Point
/// found inside the specified point. Thus, if the specified point is
/// not a GeometryCollection, an empty list will be returned.
/// </summary>
public static IList GetCoordinates(Geometry geom)
{
IList pts = new ArrayList();
geom.Apply(new ConnectedElementPointFilter(pts));
return pts;
}
