Module org.jgrapht.core

Package org.jgrapht.alg.drawing

Class RescaleLayoutAlgorithm2D<V,E>

java.lang.Object

org.jgrapht.alg.drawing.RescaleLayoutAlgorithm2D<V,E>

Type Parameters:

V - the vertex type

E - the edge type

All Implemented Interfaces:

LayoutAlgorithm2D<V,E>

public class RescaleLayoutAlgorithm2D<V,E>
extends Object

A layout algorithm which re-scales vertex positions to (center-scale,center+scale) in all dimensions. The algorithm first subtracts the mean on each axis separately, then all values are adjusted so that the maximum magnitude becomes scale. The result is finally translated back to the old center. This procedure preserves the aspect ratio.

Author:

Dimitrios Michail

Field Summary

Fields

Modifier and Type	Field	Description
protected Function<V,Point2D>	initializer	A model initializer

Constructor Summary

Constructors

Constructor	Description
RescaleLayoutAlgorithm2D(double scale)	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 Details

initializer

protected Function<V,Point2D> initializer

A model initializer

Constructor Details

RescaleLayoutAlgorithm2D

public RescaleLayoutAlgorithm2D(double scale)

Create a new layout algorithm

Parameters:

scale - the scale parameter

Method Details

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