Class PreparedPolygonContains


  • class PreparedPolygonContains
    extends AbstractPreparedPolygonContains
    Computes the contains spatial relationship predicate for a PreparedPolygon relative to all other Geometry classes. Uses short-circuit tests and indexing to improve performance.

    It is not possible to short-circuit in all cases, in particular in the case where the test geometry touches the polygon linework. In this case full topology must be computed.

    • Constructor Detail

      • PreparedPolygonContains

        public PreparedPolygonContains​(PreparedPolygon prepPoly)
        Creates an instance of this operation.
        Parameters:
        prepPoly - the PreparedPolygon to evaluate
    • Method Detail

      • contains

        public static boolean contains​(PreparedPolygon prep,
                                       Geometry geom)
        Computes the contains predicate between a PreparedPolygon and a Geometry.
        Parameters:
        prep - the prepared polygon
        geom - a test geometry
        Returns:
        true if the polygon contains the geometry
      • contains

        public boolean contains​(Geometry geom)
        Tests whether this PreparedPolygon contains a given geometry.
        Parameters:
        geom - the test geometry
        Returns:
        true if the test geometry is contained
      • fullTopologicalPredicate

        protected boolean fullTopologicalPredicate​(Geometry geom)
        Computes the full topological contains predicate. Used when short-circuit tests are not conclusive.
        Specified by:
        fullTopologicalPredicate in class AbstractPreparedPolygonContains
        Parameters:
        geom - the test geometry
        Returns:
        true if this prepared polygon contains the test geometry