public ShapefileDataReader(string path, IGeometryFactory geometryFactory = null, GeometryTransform transform = null)
: base(path, geometryFactory, transform)
{
_dbf = DbfFile.Open(Path.ChangeExtension(path, ".dbf"));
_currentRecord = new DbfRecord(_dbf.Header);
}
public ShapefileBlockReader(string path, ShapefileIndexReader index, IGeometryFactory geometryFactory = null, GeometryTransform transform = null, int blockSize = 25)
: base(path, geometryFactory, transform)
{
_block = new int[blockSize, 2];
_blockPos = blockSize;
_index = index;
}
public ShapefileReader(string path, IGeometryFactory geometryFactory = null, GeometryTransform transform = null)
{
_gf = geometryFactory ?? new GeometryFactory();
_reader = new BinaryReader(new FileStream(path, FileMode.Open, FileAccess.Read));
ShapeHeader = ShapefileHeader.Read(_reader);
ShapeEnvelope = new Envelope();
switch (ShapeHeader.ShapeType)
{
case ShapefileGeometryType.Point:
case ShapefileGeometryType.PointZ:
_shapeFunc = ReadPoint;
break;
case ShapefileGeometryType.PolyLine:
case ShapefileGeometryType.PolyLineZ:
_shapeFunc = ReadPolyLine;
break;
case ShapefileGeometryType.Polygon:
case ShapefileGeometryType.PolygonZ:
_shapeFunc = ReadPolygon;
break;
case ShapefileGeometryType.MultiPoint:
case ShapefileGeometryType.MultiPointZ:
_shapeFunc = ReadMultiPoint;
break;
default:
throw new Exception("Shape type is not supported");
}
if (transform != null)
{
_transform = transform;
Func<IGeometry> origFun = _shapeFunc;
_shapeFunc = () =>
{
return _transform.Apply(origFun());
};
}
}
public ShapefileBlockReader CreateBlockReader(IGeometryFactory geometryFactory = null, GeometryTransform transform = null)
{
return new ShapefileBlockReader(Path.ChangeExtension(_path, ".shp"), this, geometryFactory, transform);
}