edu.uci.ics.jung.visualization.control

Class CrossoverScalingControl

java.lang.Object

edu.uci.ics.jung.visualization.control.CrossoverScalingControl

All Implemented Interfaces:

ScalingControl

Direct Known Subclasses:

AbsoluteCrossoverScalingControl

public class CrossoverScalingControl
extends Object
implements ScalingControl

A scaling control that has a crossover point. When the overall scale of the view and model is less than the crossover point, the scaling is applied to the view's transform and the graph nodes, labels, etc grow smaller. This preserves the overall shape of the graph. When the scale is larger than the crossover, the scaling is applied to the graph layout. The graph spreads out, but the vertices and labels grow no larger than their original size.

Author:

Tom Nelson

Field Summary

Fields

Modifier and Type	Field and Description
protected double	crossover Point where scale crosses over from view to layout.

Constructor Summary

Constructors

Constructor and Description
CrossoverScalingControl()

Method Summary

Modifier and Type	Method and Description
double	getCrossover()
void	scale(VisualizationServer<?,?> vv, float amount, Point2D at) zoom the display in or out
void	setCrossover(double crossover) Sets the crossover point to the specified value.

Methods inherited from class java.lang.Object

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

Field Detail

crossover

protected double crossover

Point where scale crosses over from view to layout.

Constructor Detail

CrossoverScalingControl

public CrossoverScalingControl()

Method Detail

setCrossover

public void setCrossover(double crossover)

Sets the crossover point to the specified value.

Parameters:

crossover - the crossover point to use (defaults to 1.0)

getCrossover

public double getCrossover()

Returns:

the current crossover value

scale

public void scale(VisualizationServer<?,?> vv,
                  float amount,
                  Point2D at)

Description copied from interface: ScalingControl

zoom the display in or out

Specified by:

scale in interface ScalingControl

Parameters:

vv - the VisualizationViewer

amount - how much to adjust scale by

at - where to adjust scale from