[Gdal-dev] Geometry Types

[Michele Sanges]

Hi all,

in file 'ogr_core.h' is defined this enum type:

typedef enum
{
     wkbUnknown = 0,
     wkbPoint = 1,
     wkbLineString = 2,
     wkbPolygon = 3,
     wkbMultiPoint = 4,
     wkbMultiLineString = 5,
     wkbMultiPolygon = 6,
     wkbGeometryCollection = 7,
     wkbNone = 100,
     wkbLinearRing = 101,
     wkbPoint25D = 0x80000001,
     wkbLineString25D = 0x80000002,
     wkbPolygon25D = 0x80000003,
     wkbMultiPoint25D = 0x80000004,
     wkbMultiLineString25D = 0x80000005,
     wkbMultiPolygon25D = 0x80000006,
     wkbGeometryCollection25D = 0x80000007
} OGRwkbGeometryType;


Where can i find the description of any of such geometry types, in 
particular the 25D extensions?

Thanks a lot.
Michele