Package org.h2gis.functions.spatial.operators

Class ST_ConcaveHull

  • All Implemented Interfaces:
    org.h2gis.api.Function, org.h2gis.api.ScalarFunction
    public class ST_ConcaveHull
extends org.h2gis.api.DeterministicScalarFunction
    Compute the concave geometry that encloses the vertices of the input geometry

    • Field Summary

      • Fields inherited from interface org.h2gis.api.Function

        PROP_NAME, PROP_REMARKS

      • Fields inherited from interface org.h2gis.api.ScalarFunction

        PROP_DETERMINISTIC

    • Constructor Summary

      Constructors 
      Constructor Description
      ST_ConcaveHull()
      Default constructor

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      static org.locationtech.jts.geom.Geometry execute​(org.locationtech.jts.geom.Geometry geometry)
      Compute the concave geometry that encloses the vertices of the input geometry
      static org.locationtech.jts.geom.Geometry execute​(org.locationtech.jts.geom.Geometry geometry, double ratio, boolean allow_holes)
      Compute the concave geometry that encloses the vertices of the input geometry
      static org.locationtech.jts.geom.Geometry execute​(org.locationtech.jts.geom.Geometry geometry, org.h2.value.Value param)
      Compute the concave geometry that encloses the vertices of the input geometry
      String getJavaStaticMethod()  

      • Methods inherited from class org.h2gis.api.AbstractFunction

        addProperty, getProperty, removeProperty

      • Methods inherited from interface org.h2gis.api.Function

        getProperty

    • Constructor Detail

      • ST_ConcaveHull

        public ST_ConcaveHull()
        Default constructor

    • Method Detail

      • getJavaStaticMethod

        public String getJavaStaticMethod()

      • execute

        public static org.locationtech.jts.geom.Geometry execute​(org.locationtech.jts.geom.Geometry geometry)
        Compute the concave geometry that encloses the vertices of the input geometry
        Parameters:
        geometry - input geometry
        Returns:
        the concave geometry

      • execute

        public static org.locationtech.jts.geom.Geometry execute​(org.locationtech.jts.geom.Geometry geometry,
                                                         org.h2.value.Value param)
                                                  throws SQLException
        Compute the concave geometry that encloses the vertices of the input geometry
        Parameters:
        geometry - input geometry
        param - set true to allow hole or a double value to increase the hull concaveness
        Returns:
        the concave geometry
        Throws:
        SQLException

      • execute

        public static org.locationtech.jts.geom.Geometry execute​(org.locationtech.jts.geom.Geometry geometry,
                                                         double ratio,
                                                         boolean allow_holes)
        Compute the concave geometry that encloses the vertices of the input geometry
        Parameters:
        geometry - input geometry
        ratio - concaveness ratio
        allow_holes - true to allow hole
        Returns:
        the concave geometry