com.vividsolutions.jts.simplify

Class TopologyPreservingSimplifier


public class TopologyPreservingSimplifier
extends java.lang.Object

Simplifies a geometry, ensuring that the result is a valid geometry having the same dimension and number of components as the input. The simplification uses a maximum distance difference algorithm similar to the one used in the Douglas-Peucker algorithm.

In particular, if the input is an areal geometry ( Polygon or MultiPolygon )

Constructor Summary

TopologyPreservingSimplifier(Geometry inputGeom)

Method Summary

Geometry
getResultGeometry()
void
setDistanceTolerance(double distanceTolerance)
Sets the distance tolerance for the simplification.
static Geometry
simplify(Geometry geom, double distanceTolerance)

Constructor Details

TopologyPreservingSimplifier

public TopologyPreservingSimplifier(Geometry inputGeom)

Method Details

getResultGeometry

public Geometry getResultGeometry()

setDistanceTolerance

public void setDistanceTolerance(double distanceTolerance)
Sets the distance tolerance for the simplification. All vertices in the simplified geometry will be within this distance of the original geometry. The tolerance value must be non-negative. A tolerance value of zero is effectively a no-op.
Parameters:
distanceTolerance - the approximation tolerance to use

simplify

public static Geometry simplify(Geometry geom,
                                double distanceTolerance)