/// <summary>
/// Initializes a new instance of the <see cref="ShapefileEnumerator" /> class.
/// </summary>
/// <param name="shapefile"></param>
public ShapefileEnumerator(ShapefileReader shapefile)
{
_parent = shapefile;
// create a file stream for each enumerator that is given out. This allows the same file
// to have one or more enumerator. If we used the parents stream - than only one IEnumerator
// could be given out.
var stream = shapefile._shapeStreamProviderRegistry[StreamTypes.Shape].OpenRead();
_shpBinaryReader = new BigEndianBinaryReader(stream);
// skip header - since parent has already read this.
_shpBinaryReader.ReadBytes(100);
var type = _parent._mainHeader.ShapeType;
_handler = Shapefile.GetShapeHandler(type);
if (_handler == null)
{
throw new NotSupportedException("Unsuported shape type:" + type);
}
}
/// <summary>
/// Reads the shapefile and returns a GeometryCollection representing all the records in the shapefile.
/// </summary>
/// <returns>GeometryCollection representing every record in the shapefile.</returns>
public IGeometryCollection ReadAll()
{
var list = new List <IGeometry>();
ShapeGeometryType type = _mainHeader.ShapeType;
ShapeHandler handler = Shapefile.GetShapeHandler(type);
if (handler == null)
{
throw new NotSupportedException("Unsupported shape type:" + type);
}
int i = 0;
foreach (IGeometry geometry in this)
{
list.Add(geometry);
i++;
}
IGeometry[] geomArray = GeometryFactory.ToGeometryArray(list);
return(_geometryFactory.CreateGeometryCollection(geomArray));
}
