Package org.h2.util.geometry

Class GeometryUtils

java.lang.Object
org.h2.util.geometry.GeometryUtils
public final class GeometryUtils extends Object
Utilities for GEOMETRY data type.

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    static final class 
    GeometryUtils.DimensionSystemTarget
    Converter output target that determines minimal dimension system for a geometry.
    static final class 
    GeometryUtils.EnvelopeTarget
    Converter output target that calculates an envelope.
    static class 
    GeometryUtils.Target
    Converter output target.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    DIMENSION_SYSTEM_XY
    Code of 2D (XY) dimension system.
    static final int
    DIMENSION_SYSTEM_XYM
    Code of M (XYM) dimension system.
    static final int
    DIMENSION_SYSTEM_XYZ
    Code of Z (XYZ) dimension system.
    static final int
    DIMENSION_SYSTEM_XYZM
    Code of ZM (XYZM) dimension system.
    static final int
    GEOMETRY_COLLECTION
    GEOMETRYCOLLECTION geometry type.
    static final int
    LINE_STRING
    LINESTRING geometry type.
    static final int
    M
    Number of M coordinate.
    static final int
    MAX_X
    Maximum X coordinate index.
    static final int
    MAX_Y
    Maximum Y coordinate index.
    static final int
    MIN_X
    Minimum X coordinate index.
    static final int
    MIN_Y
    Minimum Y coordinate index.
    static final int
    MULTI_LINE_STRING
    MULTILINESTRING geometry type.
    static final int
    MULTI_POINT
    MULTIPOINT geometry type.
    static final int
    MULTI_POLYGON
    MULTIPOLYGON geometry type.
    static final int
    POINT
    POINT geometry type.
    static final int
    POLYGON
    POLYGON geometry type.
    static final int
    X
    Number of X coordinate.
    static final int
    Y
    Number of Y coordinate.
    static final int
    Z
    Number of Z coordinate.

  • Method Summary

    Modifier and Type
    Method
    Description
    static double[]
    getEnvelope(byte[] ewkb)
    Calculates an envelope of a specified geometry.
    static boolean
    intersects(double[] envelope1, double[] envelope2)
    Checks whether two envelopes intersect with each other.
    static double[]
    union(double[] envelope1, double[] envelope2)
    Returns union of two envelopes.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • POINT

      public static final int POINT
      POINT geometry type.
      See Also:

    • LINE_STRING

      public static final int LINE_STRING
      LINESTRING geometry type.
      See Also:

    • POLYGON

      public static final int POLYGON
      POLYGON geometry type.
      See Also:

    • MULTI_POINT

      public static final int MULTI_POINT
      MULTIPOINT geometry type.
      See Also:

    • MULTI_LINE_STRING

      public static final int MULTI_LINE_STRING
      MULTILINESTRING geometry type.
      See Also:

    • MULTI_POLYGON

      public static final int MULTI_POLYGON
      MULTIPOLYGON geometry type.
      See Also:

    • GEOMETRY_COLLECTION

      public static final int GEOMETRY_COLLECTION
      GEOMETRYCOLLECTION geometry type.
      See Also:

    • X

      public static final int X
      Number of X coordinate.
      See Also:

    • Y

      public static final int Y
      Number of Y coordinate.
      See Also:

    • Z

      public static final int Z
      Number of Z coordinate.
      See Also:

    • M

      public static final int M
      Number of M coordinate.
      See Also:

    • DIMENSION_SYSTEM_XY

      public static final int DIMENSION_SYSTEM_XY
      Code of 2D (XY) dimension system.
      See Also:

    • DIMENSION_SYSTEM_XYZ

      public static final int DIMENSION_SYSTEM_XYZ
      Code of Z (XYZ) dimension system. Can also be used in bit masks to determine presence of dimension Z.
      See Also:

    • DIMENSION_SYSTEM_XYM

      public static final int DIMENSION_SYSTEM_XYM
      Code of M (XYM) dimension system. Can also be used in bit masks to determine presence of dimension M.
      See Also:

    • DIMENSION_SYSTEM_XYZM

      public static final int DIMENSION_SYSTEM_XYZM
      Code of ZM (XYZM) dimension system. Can be also combined from DIMENSION_SYSTEM_XYZ and DIMENSION_SYSTEM_XYM using bitwise OR.
      See Also:

    • MIN_X

      public static final int MIN_X
      Minimum X coordinate index.
      See Also:

    • MAX_X

      public static final int MAX_X
      Maximum X coordinate index.
      See Also:

    • MIN_Y

      public static final int MIN_Y
      Minimum Y coordinate index.
      See Also:

    • MAX_Y

      public static final int MAX_Y
      Maximum Y coordinate index.
      See Also:

  • Method Details

    • getEnvelope

      public static double[] getEnvelope(byte[] ewkb)
      Calculates an envelope of a specified geometry.
      Parameters:
      ewkb - EWKB of a geometry
      Returns:
      envelope, or null

    • intersects

      public static boolean intersects(double[] envelope1, double[] envelope2)
      Checks whether two envelopes intersect with each other.
      Parameters:
      envelope1 - first envelope, or null
      envelope2 - second envelope, or null
      Returns:
      whether the specified envelopes intersects

    • union

      public static double[] union(double[] envelope1, double[] envelope2)
      Returns union of two envelopes. This method does not modify the specified envelopes, but may return one of them as a result.
      Parameters:
      envelope1 - first envelope, or null
      envelope2 - second envelope, or null
      Returns:
      union of two envelopes