Class SineStarFactory

Hierarchy: Object , GeometricShapeFactory, SineStarFactory

public class SineStarFactory
extends GeometricShapeFactory

Creates geometries which are shaped like multi-armed stars with each arm shaped like a sine wave. These kinds of geometries are useful as a more complex geometry for testing algorithms.

Authors:: Martin Davis

public SineStarFactory()

Creates a factory which will create sine stars using the default GeometryFactory.

public SineStarFactory(GeometryFactory geomFact)

Creates a factory which will create sine stars using the given GeometryFactory.

Parameters:: geomFact - geomFact the factory to use

public static Geometry create(Coordinate origin, double size, int nPts, int nArms, double armLengthRatio)

Creates a sine star with the given parameters.

Parameters:: origin - origin the origin point; size - size the size of the star; nPts - nPts the number of points in the star; nArms - nArms the number of arms to generate; armLengthRatio - armLengthRatio the arm length ratio

Returns:: a sine star shape

public void setNumArms(int numArms)

Sets the number of arms in the star

Parameters:: numArms - numArms the number of arms to generate

public void setArmLengthRatio(double armLengthRatio)

Sets the ratio of the length of each arm to the radius of the star. A smaller number makes the arms shorter. Value should be between 0.0 and 1.0

Parameters:: armLengthRatio - armLengthRatio the ratio determining the length of them arms.

public Geometry createSineStar()

Generates the geometry for the sine star

Returns:: the geometry representing the sine star