geometry constant

BinaryFormat<GeometryContent> const geometry

The Well-known binary (WKB) format for geometries.

Use encoder and encoder methods of the format instance to access an encoder or an decoder for WKB.

Supported geometry types and their "WKB integer codes" for different coordinate types:

Geometry	2D	Z	M	ZM
point	0001	1001	2001	3001
lineString	0002	1002	2002	3002
polygon	0003	1003	2003	3003
multiPoint	0004	1004	2004	3004
multiLineString	0005	1005	2005	3005
multiPolygon	0006	1006	2006	3006
geometryCollection	0007	1007	2007	3007

For WKB binary data encoding, the Endian.little (NDR) byte order is used by default, however when accessing an encoder it's possible to specify also the Endian.big (XDR) byte order.

See also geometryExtended to get a format for the Extended WKB (EWKB).

Implementation

static const BinaryFormat<GeometryContent> geometry =
    _WkbGeometryBinaryFormat(flavor: WkbFlavor.standard);