edu.uci.ics.jung.visualization.control
Class LayoutScalingControl

java.lang.Object
  edu.uci.ics.jung.visualization.control.LayoutScalingControl

All Implemented Interfaces:

ScalingControl

public class LayoutScalingControl
extends Object
implements ScalingControl

LayoutScalingControl applies a scaling transformation to the graph layout. The Vertices get closer or farther apart, but do not themselves change size. ScalingGraphMouse uses MouseWheelEvents to apply the scaling.

Author:

Tom Nelson

Constructor Summary

LayoutScalingControl()

Method Summary

void	scale(VisualizationServer vv, float amount, Point2D from) zoom the display in or out, depending on the direction of the mouse wheel motion.

Methods inherited from class java.lang.Object

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

Constructor Detail

LayoutScalingControl

public LayoutScalingControl()

Method Detail

scale

public void scale(VisualizationServer vv,
                  float amount,
                  Point2D from)

zoom the display in or out, depending on the direction of the mouse wheel motion.

Specified by:

scale in interface ScalingControl

Parameters:

vv - the VisualizationViewer

amount - how much to adjust scale by

from - where to adjust scale from