com.vividsolutions.jts.noding.snapround
Class GeometryNoder

java.lang.Object
  com.vividsolutions.jts.noding.snapround.GeometryNoder

public class GeometryNoder
extends java.lang.Object

Nodes the linework in a list of Geometrys using Snap-Rounding to a given PrecisionModel.

The input coordinates are expected to be rounded to the given precision model. This class does not perform that function. GeometryPrecisionReducer may be used to do this.

This class does not dissolve the output linework, so there may be duplicate linestrings in the output. Subsequent processing (e.g. polygonization) may require the linework to be unique. Using UnaryUnion is one way to do this (although this is an inefficient approach).

Constructor Summary

GeometryNoder(PrecisionModel pm)
Creates a new noder which snap-rounds to a grid specified by the given {@link PrecisionModel).

Method Summary

java.util.List	node(java.util.Collection geoms) Nodes the linework of a set of Geometrys using SnapRounding.
void	setValidate(boolean isValidityChecked) Sets whether noding validity is checked after noding is performed.

Methods inherited from class java.lang.Object

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

Constructor Detail

GeometryNoder

public GeometryNoder(PrecisionModel pm)

Creates a new noder which snap-rounds to a grid specified by the given {@link PrecisionModel).

Parameters:

pm - the precision model for the grid to snap-round to

Method Detail

setValidate

public void setValidate(boolean isValidityChecked)

Sets whether noding validity is checked after noding is performed.

Parameters:

isValidityChecked -

node

public java.util.List node(java.util.Collection geoms)

Nodes the linework of a set of Geometrys using SnapRounding.

Parameters:

geoms - a Collection of Geometrys of any type

Returns:

a List of LineStrings representing the noded linework of the input