edu.uci.ics.jung.visualization.transform

Class HyperbolicTransformer

java.lang.Object

edu.uci.ics.jung.visualization.transform.MutableTransformerDecorator

edu.uci.ics.jung.visualization.transform.LensTransformer

edu.uci.ics.jung.visualization.transform.HyperbolicTransformer

All Implemented Interfaces:

BidirectionalTransformer, MutableTransformer, ShapeTransformer, ChangeEventSupport

Direct Known Subclasses:

HyperbolicShapeTransformer

public class HyperbolicTransformer
extends LensTransformer
implements MutableTransformer

HyperbolicTransformer wraps a MutableAffineTransformer and modifies the transform and inverseTransform methods so that they create a fisheye projection of the graph points, with points near the center spread out and points near the edges collapsed onto the circumference of an ellipse. HyperbolicTransformer is not an affine transform, but it uses an affine transform to cause translation, scaling, rotation, and shearing while applying a non-affine hyperbolic filter in its transform and inverseTransform methods.

Author:

Tom Nelson

Nested Class Summary

Nested classes/interfaces inherited from class edu.uci.ics.jung.visualization.transform.LensTransformer

LensTransformer.ComponentListenerImpl

Field Summary

Fields inherited from class edu.uci.ics.jung.visualization.transform.LensTransformer

lensShape, magnification

Fields inherited from class edu.uci.ics.jung.visualization.transform.MutableTransformerDecorator

delegate

Constructor Summary

Constructors

Constructor and Description
HyperbolicTransformer(Component component) create an instance, setting values from the passed component and registering to listen for size changes on the component
HyperbolicTransformer(Component component, MutableTransformer delegate) Create an instance with a possibly shared transform.

Method Summary

Modifier and Type	Method and Description
Point2D	inverseTransform(Point2D viewPoint) override base class to un-project the fisheye effect
Point2D	transform(Point2D graphPoint) override base class transform to project the fisheye effect

Methods inherited from class edu.uci.ics.jung.visualization.transform.LensTransformer

getDistanceFromCenter, getLensShape, getMagnification, getRatio, getViewCenter, getViewRadius, inverseTransform, setLensShape, setMagnification, setToIdentity, setViewCenter, setViewRadius, transform

Methods inherited from class edu.uci.ics.jung.visualization.transform.MutableTransformerDecorator

addChangeListener, concatenate, fireStateChanged, getChangeListeners, getDelegate, getRotation, getScale, getScaleX, getScaleY, getShearX, getShearY, getTransform, getTranslateX, getTranslateY, preConcatenate, removeChangeListener, rotate, rotate, scale, setDelegate, setScale, setTranslate, shear, translate

Methods inherited from class java.lang.Object

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

Methods inherited from interface edu.uci.ics.jung.visualization.transform.MutableTransformer

concatenate, getRotation, getScale, getScaleX, getScaleY, getShearX, getShearY, getTransform, getTranslateX, getTranslateY, preConcatenate, rotate, rotate, scale, setScale, setToIdentity, setTranslate, shear, translate

Methods inherited from interface edu.uci.ics.jung.visualization.transform.shape.ShapeTransformer

inverseTransform, transform

Methods inherited from interface edu.uci.ics.jung.visualization.util.ChangeEventSupport

addChangeListener, fireStateChanged, getChangeListeners, removeChangeListener

Constructor Detail

HyperbolicTransformer

public HyperbolicTransformer(Component component)

create an instance, setting values from the passed component and registering to listen for size changes on the component

Parameters:

component - the component used for rendering

HyperbolicTransformer

public HyperbolicTransformer(Component component,
                             MutableTransformer delegate)

Create an instance with a possibly shared transform.

Parameters:

component - the component used for rendering

delegate - the transformer to use

Method Detail

transform

public Point2D transform(Point2D graphPoint)

override base class transform to project the fisheye effect

Specified by:

transform in interface BidirectionalTransformer

Specified by:

transform in class LensTransformer

Parameters:

graphPoint - graph point to convert

Returns:

screen point

inverseTransform

public Point2D inverseTransform(Point2D viewPoint)

override base class to un-project the fisheye effect

Specified by:

inverseTransform in interface BidirectionalTransformer

Specified by:

inverseTransform in class LensTransformer

Parameters:

viewPoint - screen point to convert

Returns:

the graph point