private static IGeometry ParseWkbGeometry(GaiaGeoGeometry type, byte[] blob, ref int offset, IGeometryFactory factory, GaiaImport gaiaImport)
{
var readCoordinates = SetReadCoordinatesFunction(gaiaImport, type);
switch (ToBaseGeometryType(type))
{
case GaiaGeoGeometry.GAIA_POINT:
return(ParseWkbPoint(blob, ref offset, factory, readCoordinates, gaiaImport));
case GaiaGeoGeometry.GAIA_MULTIPOINT:
return(ParseWkbMultiPoint(blob, ref offset, factory, readCoordinates, gaiaImport));
case GaiaGeoGeometry.GAIA_LINESTRING:
return(ParseWkbLineString(blob, ref offset, factory, readCoordinates, gaiaImport));
case GaiaGeoGeometry.GAIA_MULTILINESTRING:
return(ParseWkbMultiLineString(blob, ref offset, factory, readCoordinates, gaiaImport));
case GaiaGeoGeometry.GAIA_POLYGON:
return(ParseWkbPolygon(blob, ref offset, factory, readCoordinates, gaiaImport));
case GaiaGeoGeometry.GAIA_MULTIPOLYGON:
return(ParseWkbMultiPolygon(blob, ref offset, factory, readCoordinates, gaiaImport));
case GaiaGeoGeometry.GAIA_GEOMETRYCOLLECTION:
return(ParseWkbGeometryCollection(blob, ref offset, factory, gaiaImport));
}
return(null);
}
public void SetGeometryType(GaiaGeoGeometry geometryTypeFlag)
{
//Debug.Assert(geometryTypeFlag != GaiaGeoGeometry.GAIA_UNKNOWN);
//Debug.Assert(geometryTypeFlag > 0);
var cflag = ((int)geometryTypeFlag);
if (cflag > 1000000)
{
Compressed = true;
cflag -= 1000000;
}
if (cflag > 3000)
cflag = 3000;
else if (cflag > 2000)
cflag = 2000;
else if (cflag > 1000)
cflag = 1000;
else
cflag = 0;
CoordinateFlag = cflag | (Compressed ? 1000000 : 0);
HasZ = (cflag == 1000) || (cflag == 3000);
HasM = (cflag == 2000) || (cflag == 3000);
Dimension = GaiaDimensionModels.GAIA_XY;
if (HasZ) Dimension |= GaiaDimensionModels.GAIA_Z;
if (HasM) Dimension |= GaiaDimensionModels.GAIA_M;
}
private GaiaExport(GaiaGeoGeometry geometryType, WriteDoubleFunction writeDouble, WriteSingleFunction writeSingle,
WriteInt32Function writeInt32)
: base(geometryType)
{
WriteDouble = writeDouble;
WriteSingle = writeSingle;
WriteInt32 = writeInt32;
}
private GaiaImport(GaiaGeoGeometry geometryType, GetDoubleFunction getDouble, GetDoublesFunction getDoubles, GetSingleFunction getSingle, GetSinglesFunction getSingles, GetInt32Function getInt32, Ordinates handleOrdinates)
: base(geometryType)
{
GetDouble = getDouble;
GetDoubles = getDoubles;
GetSingle = getSingle;
GetSingles = getSingles;
GetInt32 = getInt32;
HandleOrdinates = handleOrdinates;
}
public void SetGeometryType(GaiaGeoGeometry geometryTypeFlag)
{
//Debug.Assert(geometryTypeFlag != GaiaGeoGeometry.GAIA_UNKNOWN);
//Debug.Assert(geometryTypeFlag > 0);
var cflag = ((int)geometryTypeFlag);
if (cflag > 1000000)
{
Compressed = true;
cflag -= 1000000;
}
if (cflag > 3000)
{
cflag = 3000;
}
else if (cflag > 2000)
{
cflag = 2000;
}
else if (cflag > 1000)
{
cflag = 1000;
}
else
{
cflag = 0;
}
CoordinateFlag = cflag | (Compressed ? 1000000 : 0);
HasZ = (cflag == 1000) || (cflag == 3000);
HasM = (cflag == 2000) || (cflag == 3000);
Dimension = GaiaDimensionModels.GAIA_XY;
if (HasZ)
{
Dimension |= GaiaDimensionModels.GAIA_Z;
}
if (HasM)
{
Dimension |= GaiaDimensionModels.GAIA_M;
}
}
private static GaiaGeoGeometry ToBaseGeometryType(GaiaGeoGeometry geometry)
{
var geometryInt = (int)geometry;
if (geometryInt > 1000000)
{
geometryInt -= 1000000;
}
if (geometryInt > 3000)
{
geometryInt -= 3000;
}
if (geometryInt > 2000)
{
geometryInt -= 2000;
}
if (geometryInt > 1000)
{
geometryInt -= 1000;
}
return((GaiaGeoGeometry)geometryInt);
}
protected GaiaGeoIO(GaiaGeoGeometry geometryType)
{
SetGeometryType(geometryType);
}
private static ReadCoordinatesFunction SetReadCoordinatesFunction(GaiaImport gaiaImport, GaiaGeoGeometry type)
{
gaiaImport.SetGeometryType(type);
if (gaiaImport.Uncompressed)
{
if (gaiaImport.HasZ && gaiaImport.HasM)
{
return(ReadXYZM);
}
if (gaiaImport.HasM)
{
return(ReadXYM);
}
if (gaiaImport.HasZ)
{
return(ReadXYZ);
}
return(ReadXY);
}
if (gaiaImport.HasZ && gaiaImport.HasM)
{
return(ReadCompressedXYZM);
}
if (gaiaImport.HasM)
{
return(ReadCompressedXYM);
}
if (gaiaImport.HasZ)
{
return(ReadCompressedXYZ);
}
return(ReadCompressedXY);
}
private GaiaExport(GaiaGeoGeometry geometryType, WriteDoubleFunction writeDouble, WriteSingleFunction writeSingle,
WriteInt32Function writeInt32)
: base(geometryType)
{
WriteDouble = writeDouble;
WriteSingle = writeSingle;
WriteInt32 = writeInt32;
}
private GaiaImport(GaiaGeoGeometry geometryType, GetDoubleFunction getDouble, GetDoublesFunction getDoubles, GetSingleFunction getSingle, GetSinglesFunction getSingles, GetInt32Function getInt32, Ordinates handleOrdinates)
: base(geometryType)
{
GetDouble = getDouble;
GetDoubles = getDoubles;
GetSingle = getSingle;
GetSingles = getSingles;
GetInt32 = getInt32;
HandleOrdinates = handleOrdinates;
}
protected GaiaGeoIO(GaiaGeoGeometry geometryType)
{
SetGeometryType(geometryType);
}
private static IGeometry ParseWkbGeometry(GaiaGeoGeometry type, byte[] blob, ref int offset, IGeometryFactory factory, GaiaImport gaiaImport)
{
var readCoordinates = SetReadCoordinatesFunction(gaiaImport, type);
switch (ToBaseGeometryType(type))
{
case GaiaGeoGeometry.GAIA_POINT:
return ParseWkbPoint(blob, ref offset, factory, readCoordinates, gaiaImport);
case GaiaGeoGeometry.GAIA_MULTIPOINT:
return ParseWkbMultiPoint(blob, ref offset, factory, readCoordinates, gaiaImport);
case GaiaGeoGeometry.GAIA_LINESTRING:
return ParseWkbLineString(blob, ref offset, factory, readCoordinates, gaiaImport);
case GaiaGeoGeometry.GAIA_MULTILINESTRING:
return ParseWkbMultiLineString(blob, ref offset, factory, readCoordinates, gaiaImport);
case GaiaGeoGeometry.GAIA_POLYGON:
return ParseWkbPolygon(blob, ref offset, factory, readCoordinates, gaiaImport);
case GaiaGeoGeometry.GAIA_MULTIPOLYGON:
return ParseWkbMultiPolygon(blob, ref offset, factory, readCoordinates, gaiaImport);
case GaiaGeoGeometry.GAIA_GEOMETRYCOLLECTION:
return ParseWkbGeometryCollection(blob, ref offset, factory, gaiaImport);
}
return null;
}
private static GaiaGeoGeometry ToBaseGeometryType(GaiaGeoGeometry geometry)
{
var geometryInt = (int)geometry;
if (geometryInt > 1000000) geometryInt -= 1000000;
if (geometryInt > 3000) geometryInt -= 3000;
if (geometryInt > 2000) geometryInt -= 2000;
if (geometryInt > 1000) geometryInt -= 1000;
return (GaiaGeoGeometry)geometryInt;
}
private static ReadCoordinatesFunction SetReadCoordinatesFunction(GaiaImport gaiaImport, GaiaGeoGeometry type)
{
gaiaImport.SetGeometryType(type);
if (gaiaImport.Uncompressed)
{
if (gaiaImport.HasZ && gaiaImport.HasM)
return ReadXYZM;
if (gaiaImport.HasM)
return ReadXYM;
if (gaiaImport.HasZ)
return ReadXYZ;
return ReadXY;
}
if (gaiaImport.HasZ && gaiaImport.HasM)
return ReadCompressedXYZM;
if (gaiaImport.HasM)
return ReadCompressedXYM;
if (gaiaImport.HasZ)
return ReadCompressedXYZ;
return ReadCompressedXY;
}