org.h2gis.functions.spatial.clean

Class MakeValidOp

java.lang.Object

org.h2gis.functions.spatial.clean.MakeValidOp

public class MakeValidOp
extends Object

Operator to make a geometry valid.
Making a geometry valid will remove duplicate points although duplicate points do not make a geometry invalid.

Author:

Michaël Michaud

Constructor Summary

Constructors

Constructor and Description
MakeValidOp()

Method Summary

Modifier and Type	Method and Description
org.locationtech.jts.geom.Geometry	makeValid(org.locationtech.jts.geom.Geometry geometry) Repair an invalid geometry.
MakeValidOp	setPreserveCoordDim(boolean preserveCoordDim)
MakeValidOp	setPreserveDuplicateCoord(boolean preserveDuplicateCoord)
MakeValidOp	setPreserveGeomDim(boolean preserveGeomDim)

Methods inherited from class java.lang.Object

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

Constructor Detail

MakeValidOp

public MakeValidOp()

Method Detail

setPreserveGeomDim

public MakeValidOp setPreserveGeomDim(boolean preserveGeomDim)

setPreserveCoordDim

public MakeValidOp setPreserveCoordDim(boolean preserveCoordDim)

setPreserveDuplicateCoord

public MakeValidOp setPreserveDuplicateCoord(boolean preserveDuplicateCoord)

makeValid

public org.locationtech.jts.geom.Geometry makeValid(org.locationtech.jts.geom.Geometry geometry)

Repair an invalid geometry.
If preserveGeomDim is true, makeValid will remove degenerated geometries from the result, i.e geometries which dimension is lower than the input geometry dimension (except for mixed GeometryCollection).
A multi-geometry will always produce a multi-geometry (eventually empty or made of a single component). A simple geometry may produce a multi-geometry (ex. polygon with self-intersection will generally produce a multi-polygon). In this case, it is up to the client to explode multi-geometries if he needs to.
If preserveGeomDim is off, it is up to the client to filter degenerate geometries.
WARNING : for geometries of dimension 1 (linear), duplicate coordinates are preserved as much as possible. For geometries of dimension 2 (areal), duplicate coordinates are generally removed due to the use of overlay operations.

Parameters:

geometry - input geometry

Returns:

a valid Geometry