Package org.jgrapht.alg.drawing

Class CircularLayoutAlgorithm2D<V,E>

java.lang.Object

org.jgrapht.alg.drawing.CircularLayoutAlgorithm2D<V,E>

Type Parameters:

V - the vertex type

E - the edge type

All Implemented Interfaces:

LayoutAlgorithm2D<V,E>

public class CircularLayoutAlgorithm2D<V,E>
extends Object

Circular layout.

The algorithm places the graph vertices on a circle evenly spaced. The vertices are iterated based on the iteration order of the vertex set of the graph. The order can be adjusted by providing an external comparator.

Author:

Dimitrios Michail

Field Summary

Fields

Modifier and Type	Field	Description
protected Comparator<Double>	comparator
protected Function<V,Point2D>	initializer	A model initializer
protected double	radius
protected Comparator<V>	vertexComparator

Constructor Summary

Constructors

Constructor	Description
CircularLayoutAlgorithm2D()	Create a new layout algorithm
CircularLayoutAlgorithm2D(double radius)	Create a new layout algorithm
CircularLayoutAlgorithm2D(double radius, Comparator<V> vertexComparator)	Create a new layout algorithm.

Method Summary

Modifier and Type	Method	Description
Function<V,Point2D>	getInitializer()	Get the initializer
protected void	init(Graph<V,E> graph, LayoutModel2D<V> model)	Initialize a model using the initializer.
void	layout(Graph<V,E> graph, LayoutModel2D<V> model)	Layout a graph.
void	setInitializer(Function<V,Point2D> initializer)	Set the initializer

Methods inherited from class java.lang.Object

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

Field Detail

radius

protected double radius

comparator

protected Comparator<Double> comparator

vertexComparator

protected Comparator<V> vertexComparator

initializer

protected Function<V,Point2D> initializer

A model initializer

Constructor Detail

CircularLayoutAlgorithm2D

public CircularLayoutAlgorithm2D()

Create a new layout algorithm

CircularLayoutAlgorithm2D

public CircularLayoutAlgorithm2D(double radius)

Create a new layout algorithm

Parameters:

radius - the circle radius

CircularLayoutAlgorithm2D

public CircularLayoutAlgorithm2D(double radius,
                                 Comparator<V> vertexComparator)

Create a new layout algorithm. The algorithm will iterate over the vertices of the graph using the provided ordering.

Parameters:

radius - the circle radius

vertexComparator - the vertex comparator. Can be null.

Method Detail

layout

public void layout(Graph<V,E> graph,
                   LayoutModel2D<V> model)

Description copied from interface: LayoutAlgorithm2D

Layout a graph.

Parameters:

graph - the graph

model - the layout model to use

getInitializer

public Function<V,Point2D> getInitializer()

Get the initializer

Returns:

the initializer

setInitializer

public void setInitializer(Function<V,Point2D> initializer)

Set the initializer

Parameters:

initializer - the initializer

init

protected void init(Graph<V,E> graph,
                    LayoutModel2D<V> model)

Initialize a model using the initializer.

Parameters:

graph - the graph

model - the model