Package org.jungrapht.visualization.transform

Class LensTransformer

java.lang.Object

org.jungrapht.visualization.transform.MutableTransformerDecorator

org.jungrapht.visualization.transform.LensTransformer

All Implemented Interfaces:

BidirectionalTransformer, MutableTransformer, ShapeTransformer, ChangeEventSupport

Direct Known Subclasses:

HyperbolicTransformer, MagnifyTransformer

public abstract class LensTransformer
extends MutableTransformerDecorator
implements MutableTransformer

LensTransformer wraps a MutableAffineTransformer and modifies the transform and inverseTransform methods so that they create a projection of the graph points within an elliptical lens.

LensTransformer uses an affine transform to cause translation, scaling, rotation, and shearing while applying a possibly non-affine filter in its transform and inverseTransform methods.

Author:

Tom Nelson

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	LensTransformer.Builder<T extends LensTransformer,B extends LensTransformer.Builder<T,B>>

Field Summary

Fields

Modifier and Type	Field	Description
protected Lens	lens

Fields inherited from class org.jungrapht.visualization.transform.MutableTransformerDecorator

delegate

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	LensTransformer(Dimension d)
protected	LensTransformer(Dimension d, MutableTransformer delegate)
protected	LensTransformer(Lens lens)	Create an instance with a possibly shared lens.
protected	LensTransformer(Lens lens, MutableTransformer delegate)

Method Summary

Modifier and Type	Method	Description
Lens	getLens()
Point2D	inverseTransform(double x, double y)
abstract Point2D	inverseTransform(Point2D viewPoint)	override base class to un-project the fisheye effect
void	setToIdentity()
Point2D	transform(double x, double y)
abstract Point2D	transform(Point2D graphPoint)	override base class transform to project the fisheye effect

Methods inherited from class org.jungrapht.visualization.transform.MutableTransformerDecorator

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jungrapht.visualization.util.ChangeEventSupport

addChangeListener, fireStateChanged, getChangeListeners, removeChangeListener

Methods inherited from interface org.jungrapht.visualization.transform.MutableTransformer

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

Methods inherited from interface org.jungrapht.visualization.transform.shape.ShapeTransformer

inverseTransform, transform

Field Detail

lens

protected Lens lens

Constructor Detail

LensTransformer

protected LensTransformer(Dimension d)

Parameters:

d - the size used for the lens

LensTransformer

protected LensTransformer(Lens lens)

Create an instance with a possibly shared lens.

Parameters:

lens -

LensTransformer

protected LensTransformer(Dimension d,
                          MutableTransformer delegate)

Parameters:

d - the size used for the lens

delegate - the layoutTransformer to use

LensTransformer

protected LensTransformer(Lens lens,
                          MutableTransformer delegate)

Parameters:

lens -

delegate - the layoutTransformer to use

Method Detail

getLens

public Lens getLens()

setToIdentity

public void setToIdentity()

Specified by:

setToIdentity in interface MutableTransformer

Overrides:

setToIdentity in class MutableTransformerDecorator

transform

public abstract Point2D transform(Point2D graphPoint)

override base class transform to project the fisheye effect

Specified by:

transform in interface BidirectionalTransformer

Overrides:

transform in class MutableTransformerDecorator

Parameters:

graphPoint - graph point to convert

Returns:

screen point

transform

public Point2D transform(double x,
                         double y)

Specified by:

transform in interface BidirectionalTransformer

inverseTransform

public abstract Point2D inverseTransform(Point2D viewPoint)

override base class to un-project the fisheye effect

Specified by:

inverseTransform in interface BidirectionalTransformer

Overrides:

inverseTransform in class MutableTransformerDecorator

Parameters:

viewPoint - screen point to convert

Returns:

the graph point

inverseTransform

public Point2D inverseTransform(double x,
                                double y)

Specified by:

inverseTransform in interface BidirectionalTransformer