com.vividsolutions.jts.shape.random

Class RandomPointsInGridBuilder

java.lang.Object

com.vividsolutions.jts.shape.GeometricShapeBuilder

com.vividsolutions.jts.shape.random.RandomPointsInGridBuilder

public class RandomPointsInGridBuilder
extends GeometricShapeBuilder

Creates random point sets where the points are constrained to lie in the cells of a grid.

Author:

mbdavis

Field Summary

Fields inherited from class com.vividsolutions.jts.shape.GeometricShapeBuilder

extent, geomFactory, numPts

Constructor Summary

Constructors

Constructor and Description
RandomPointsInGridBuilder() Create a builder which will create shapes using the default GeometryFactory.
RandomPointsInGridBuilder(GeometryFactory geomFact) Create a builder which will create shapes using the given GeometryFactory.

Method Summary

Methods

Modifier and Type	Method and Description
Geometry	getGeometry() Gets the MultiPoint containing the generated point
void	setConstrainedToCircle(boolean isConstrainedToCircle) Sets whether generated points are constrained to lie within a circle contained within each grid cell.
void	setGutterFraction(double gutterFraction) Sets the fraction of the grid cell side which will be treated as a gutter, in which no points will be created.

Methods inherited from class com.vividsolutions.jts.shape.GeometricShapeBuilder

createCoord, getCentre, getDiameter, getExtent, getRadius, getSquareBaseLine, getSquareExtent, setExtent, setNumPoints

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomPointsInGridBuilder

public RandomPointsInGridBuilder()

Create a builder which will create shapes using the default GeometryFactory.

RandomPointsInGridBuilder

public RandomPointsInGridBuilder(GeometryFactory geomFact)

Create a builder which will create shapes using the given GeometryFactory.

Parameters:

geomFact - the factory to use

Method Detail

setConstrainedToCircle

public void setConstrainedToCircle(boolean isConstrainedToCircle)

Sets whether generated points are constrained to lie within a circle contained within each grid cell. This provides greater separation between points in adjacent cells.

The default is to not be constrained to a circle.

Parameters:

isConstrainedToCircle -

setGutterFraction

public void setGutterFraction(double gutterFraction)

Sets the fraction of the grid cell side which will be treated as a gutter, in which no points will be created. The provided value is clamped to the range [0.0, 1.0].

Parameters:

gutterFraction -

getGeometry

public Geometry getGeometry()

Gets the MultiPoint containing the generated point

Specified by:

getGeometry in class GeometricShapeBuilder

Returns:

a MultiPoint