TWKBUtils Class Reference

Collaboration diagram for TWKBUtils:

Static Public Member Functions
static int	zigZagEncode (final int value)
static int	zigZagDecode (final int value)

Static Public Attributes
static final byte	POINT_TYPE = 1
static final byte	LINESTRING_TYPE = 2
static final byte	POLYGON_TYPE = 3
static final byte	MULTIPOINT_TYPE = 4
static final byte	MULTILINESTRING_TYPE = 5
static final byte	MULTIPOLYGON_TYPE = 6
static final byte	GEOMETRYCOLLECTION_TYPE = 7
static final byte	EXTENDED_DIMENSIONS = 1 << 3
static final byte	EMPTY_GEOMETRY = 1 << 4
static final byte	MAX_COORD_PRECISION = 7
static final byte	MIN_COORD_PRECISION = -8
static final byte	MAX_EXTENDED_PRECISION = 3
static final byte	MIN_EXTENDED_PRECISION = -4

Member Function Documentation

zigZagDecode()

static int zigZagDecode ( final int  value )

static

Referenced by TWKBReader.ExtendedPrecisionReader.ExtendedPrecisionReader(), and TWKBReader.read().

                                                  {
    final int temp = (((value << 31) >> 31) ^ value) >> 1;
    return temp ^ (value & (1 << 31));
  }

zigZagEncode()

static int zigZagEncode ( final int  value )

static

Referenced by TWKBWriter.getTypeAndPrecisionByte(), and TWKBWriter.ExtendedPrecisionWriter.writeExtendedPrecision().

                                                  {
    return (value << 1) ^ (value >> 31);
  }

Member Data Documentation

EMPTY_GEOMETRY

final byte EMPTY_GEOMETRY = 1 << 4

static

Referenced by TWKBReader.readGeometryCollection(), TWKBReader.readLineString(), TWKBReader.readMultiLineString(), TWKBReader.readMultiPoint(), TWKBReader.readMultiPolygon(), TWKBReader.readPoint(), TWKBReader.readPolygon(), and TWKBWriter.write().

EXTENDED_DIMENSIONS

final byte EXTENDED_DIMENSIONS = 1 << 3

static

Referenced by TWKBReader.read(), and TWKBWriter.write().

GEOMETRYCOLLECTION_TYPE

final byte GEOMETRYCOLLECTION_TYPE = 7

static

Referenced by TWKBWriter.getType(), TWKBReader.read(), and TWKBWriter.write().

LINESTRING_TYPE

final byte LINESTRING_TYPE = 2

static

Referenced by TWKBWriter.getType(), TWKBReader.read(), and TWKBWriter.write().

MAX_COORD_PRECISION

final byte MAX_COORD_PRECISION = 7

static

Referenced by TWKBWriter.TWKBWriter().

MAX_EXTENDED_PRECISION

final byte MAX_EXTENDED_PRECISION = 3

static

Referenced by TWKBWriter.ExtendedPrecisionWriter.finalize().

MIN_COORD_PRECISION

final byte MIN_COORD_PRECISION = -8

static

MIN_EXTENDED_PRECISION

final byte MIN_EXTENDED_PRECISION = -4

static

MULTILINESTRING_TYPE

final byte MULTILINESTRING_TYPE = 5

static

Referenced by TWKBWriter.getType(), TWKBReader.read(), and TWKBWriter.write().

MULTIPOINT_TYPE

final byte MULTIPOINT_TYPE = 4

static

Referenced by TWKBWriter.getType(), TWKBReader.read(), and TWKBWriter.write().

MULTIPOLYGON_TYPE

final byte MULTIPOLYGON_TYPE = 6

static

Referenced by TWKBWriter.getType(), TWKBReader.read(), and TWKBWriter.write().

POINT_TYPE

final byte POINT_TYPE = 1

static

Referenced by TWKBWriter.getType(), TWKBReader.read(), and TWKBWriter.write().

POLYGON_TYPE

final byte POLYGON_TYPE = 3

static

Referenced by TWKBWriter.getType(), TWKBReader.read(), and TWKBWriter.write().