org.h2gis.h2spatialext.function.spatial.mesh
Class ST_Delaunay

java.lang.Object
  org.h2gis.h2spatialapi.AbstractFunction
      org.h2gis.h2spatialapi.DeterministicScalarFunction
          org.h2gis.h2spatialext.function.spatial.mesh.ST_Delaunay

All Implemented Interfaces:

Function, ScalarFunction

public class ST_Delaunay
extends DeterministicScalarFunction

Returns polygons that represent a Delaunay triangulation constructed from a collection of points. Note that the triangulation doesn't compute the intersections between lines; it takes only existing coordinates.

Author:

Erwan Bocher

Field Summary

Fields inherited from interface org.h2gis.h2spatialapi.ScalarFunction

PROP_DETERMINISTIC, PROP_NOBUFFER

Fields inherited from interface org.h2gis.h2spatialapi.Function

PROP_NAME, PROP_REMARKS

Constructor Summary

ST_Delaunay()

Method Summary

static com.vividsolutions.jts.geom.GeometryCollection	createDT(com.vividsolutions.jts.geom.Geometry geometry) Build a delaunay triangulation based on all coordinates of the geometry
static com.vividsolutions.jts.geom.GeometryCollection	createDT(com.vividsolutions.jts.geom.Geometry geometry, int flag) Build a delaunay triangulation based on all coordinates of the geometry
static com.vividsolutions.jts.geom.GeometryCollection	createDT(com.vividsolutions.jts.geom.Geometry geometry, int flag, double qualityRefinement) Build a delaunay triangulation based on all coordinates of the geometry
String	getJavaStaticMethod()

Methods inherited from class org.h2gis.h2spatialapi.AbstractFunction

addProperty, getProperty, removeProperty

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.h2gis.h2spatialapi.Function

getProperty

Constructor Detail

ST_Delaunay

public ST_Delaunay()

Method Detail

getJavaStaticMethod

public String getJavaStaticMethod()

createDT

public static com.vividsolutions.jts.geom.GeometryCollection createDT(com.vividsolutions.jts.geom.Geometry geometry)
                                                               throws SQLException,
                                                                      org.jdelaunay.delaunay.error.DelaunayError

Build a delaunay triangulation based on all coordinates of the geometry

Parameters:

geometry -

Returns:

a set of polygons (triangles)

Throws:

SQLException, - DelaunayError

org.jdelaunay.delaunay.error.DelaunayError

SQLException

createDT

public static com.vividsolutions.jts.geom.GeometryCollection createDT(com.vividsolutions.jts.geom.Geometry geometry,
                                                                      int flag)
                                                               throws SQLException,
                                                                      org.jdelaunay.delaunay.error.DelaunayError

Build a delaunay triangulation based on all coordinates of the geometry

Parameters:

geometry -

flag -

Returns:

a set of polygons (triangles)

Throws:

SQLException, - DelaunayError

org.jdelaunay.delaunay.error.DelaunayError

SQLException

createDT

public static com.vividsolutions.jts.geom.GeometryCollection createDT(com.vividsolutions.jts.geom.Geometry geometry,
                                                                      int flag,
                                                                      double qualityRefinement)
                                                               throws SQLException,
                                                                      org.jdelaunay.delaunay.error.DelaunayError

Build a delaunay triangulation based on all coordinates of the geometry

Parameters:

geometry -

flag -

qualityRefinement -

Returns:

Output is a COLLECTION of polygons (for flag=0) or a MULTILINESTRING (for flag=1)

Throws:

SQLException, - DelaunayError

org.jdelaunay.delaunay.error.DelaunayError

SQLException