Class CreateRandomShapeFunctions

java.lang.Object

org.locationtech.jtstest.function.CreateRandomShapeFunctions

public class CreateRandomShapeFunctions
extends Object

Constructor Summary

Constructors

Constructor	Description
CreateRandomShapeFunctions()

Method Summary

Modifier and Type	Method	Description
static Geometry	haltonPoints(Geometry g, int nPts)
static Geometry	haltonPoints57(Geometry g, int nPts)
static Geometry	haltonPointsWithBases(Geometry g, int nPts, int basei, int basej)
static Geometry	randomLineString(Geometry g, int nPts)
static Geometry	randomPoints(Geometry g, int nPts)
static Geometry	randomPointsInGrid(Geometry g, int nPts)
static Geometry	randomPointsInGridCircles(Geometry g, int nPts)
static Geometry	randomPointsInGridWithGutter(Geometry g, int nPts, double gutterFraction)
static Geometry	randomPointsInPolygon(Geometry g, int nPts)
static Geometry	randomPointsInTriangle(Geometry g, int nPts)
static Geometry	randomRadialPoints(Geometry g, int nPts)
static Geometry	randomRectilinearWalk(Geometry g, int nPts)
static Geometry	randomSegments(Geometry g, int nPts)
static Geometry	randomSegmentsInGrid(Geometry g, int nPts)
static Geometry	randomSegmentsRectilinear(Geometry g, int nPts)
static Geometry	robertsPoints(Geometry geom, int nPts)	Creates a set of quasi-random 2D points using the Roberts recurrences.

Methods inherited from class Object

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

Constructor Details

CreateRandomShapeFunctions

public CreateRandomShapeFunctions()

Method Details

randomPointsInGrid

public static Geometry randomPointsInGrid(Geometry g,
 int nPts)

randomPointsInGridCircles

public static Geometry randomPointsInGridCircles(Geometry g,
 int nPts)

randomPointsInGridWithGutter

public static Geometry randomPointsInGridWithGutter(Geometry g,
 int nPts,
 double gutterFraction)

randomPoints

public static Geometry randomPoints(Geometry g,
 int nPts)

randomPointsInPolygon

public static Geometry randomPointsInPolygon(Geometry g,
 int nPts)

randomPointsInTriangle

public static Geometry randomPointsInTriangle(Geometry g,
 int nPts)

randomRadialPoints

public static Geometry randomRadialPoints(Geometry g,
 int nPts)

haltonPoints

public static Geometry haltonPoints(Geometry g,
 int nPts)

haltonPoints57

public static Geometry haltonPoints57(Geometry g,
 int nPts)

haltonPointsWithBases

public static Geometry haltonPointsWithBases(Geometry g,
 int nPts,
 int basei,
 int basej)

robertsPoints

public static Geometry robertsPoints(Geometry geom,
 int nPts)

Creates a set of quasi-random 2D points using the Roberts recurrences. Roberts recurrences are based on the generalized Golden Ratio (for the 2D case, Phi2). They have excellent low-discrepancy characteristics. This mean they are non-periodic and have less clustering than random points or Halton points.

Parameters:

geom -

nPts -

Returns:

randomSegments

public static Geometry randomSegments(Geometry g,
 int nPts)

randomSegmentsInGrid

public static Geometry randomSegmentsInGrid(Geometry g,
 int nPts)

randomSegmentsRectilinear

public static Geometry randomSegmentsRectilinear(Geometry g,
 int nPts)

randomLineString

public static Geometry randomLineString(Geometry g,
 int nPts)

randomRectilinearWalk

public static Geometry randomRectilinearWalk(Geometry g,
 int nPts)