LensTransformer

java.lang.Object
- edu.uci.ics.jung.visualization.transform.MutableTransformerDecorator
- - edu.uci.ics.jung.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.

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

protected class LensTransformer.ComponentListenerImpl
react to size changes on a component

Nested Classes
Modifier and Type	Class and Description
`protected class`	`LensTransformer.ComponentListenerImpl` react to size changes on a component

Field Summary

Fields
Modifier and Type Field and Description

protected java.awt.geom.RectangularShape lensShape
the area affected by the transform

protected float magnification
- Fields inherited from class edu.uci.ics.jung.visualization.transform.MutableTransformerDecorator
  delegate

Fields
Modifier and Type	Field and Description
`protected java.awt.geom.RectangularShape`	`lensShape` the area affected by the transform
`protected float`	`magnification`

Constructor Summary

Constructors
Constructor and Description

LensTransformer(java.awt.Component component, MutableTransformer delegate)
create an instance with a possibly shared transform

Constructors
Constructor and Description
`LensTransformer(java.awt.Component component, MutableTransformer delegate)` create an instance with a possibly shared transform

Method Summary

Methods
Modifier and Type	Method and Description
`double`	`getDistanceFromCenter(java.awt.geom.Point2D p)`
`java.awt.geom.RectangularShape`	`getLensShape()`
`float`	`getMagnification()`
`double`	`getRatio()`
`java.awt.geom.Point2D`	`getViewCenter()`
`double`	`getViewRadius()`
`abstract java.awt.geom.Point2D`	`inverseTransform(java.awt.geom.Point2D viewPoint)` override base class to un-project the fisheye effect
`java.awt.Shape`	`inverseTransform(java.awt.Shape shape)` return the supplied shape, translated to the coordinates that result from calling inverseTransform on its center
`void`	`setLensShape(java.awt.geom.RectangularShape ellipse)`
`void`	`setMagnification(float magnification)`
`void`	`setToIdentity()`
`void`	`setViewCenter(java.awt.geom.Point2D viewCenter)`
`void`	`setViewRadius(double viewRadius)`
`abstract java.awt.geom.Point2D`	`transform(java.awt.geom.Point2D graphPoint)` override base class transform to project the fisheye effect
`java.awt.Shape`	`transform(java.awt.Shape shape)` return the supplied shape, translated to the coordinates that result from calling transform on its center

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, setTranslate, shear, translate

Methods inherited from interface edu.uci.ics.jung.visualization.util.ChangeEventSupport
addChangeListener, fireStateChanged, getChangeListeners, removeChangeListener

- Field Detail
  - lensShape
```
protected java.awt.geom.RectangularShape lensShape
```
    the area affected by the transform
  - magnification
```
protected float magnification
```
- Constructor Detail
  - LensTransformer
```
public LensTransformer(java.awt.Component component,
               MutableTransformer delegate)
```
    create an instance with a possibly shared transform
    
    Parameters:
    component -
    delegate -
- Method Detail
  - getMagnification
```
public float getMagnification()
```
    Returns:
    Returns the magnification.
  - setMagnification
```
public void setMagnification(float magnification)
```
    Parameters:
    magnification - The magnification to set.
  - getViewCenter
```
public java.awt.geom.Point2D getViewCenter()
```
    Returns:
    Returns the viewCenter.
  - setViewCenter
```
public void setViewCenter(java.awt.geom.Point2D viewCenter)
```
    Parameters:
    viewCenter - The viewCenter to set.
  - getViewRadius
```
public double getViewRadius()
```
    Returns:
    Returns the viewRadius.
  - setViewRadius
```
public void setViewRadius(double viewRadius)
```
    Parameters:
    viewRadius - The viewRadius to set.
  - getRatio
```
public double getRatio()
```
    Returns:
    Returns the ratio.
  - setLensShape
```
public void setLensShape(java.awt.geom.RectangularShape ellipse)
```
  - getLensShape
```
public java.awt.geom.RectangularShape getLensShape()
```
  - setToIdentity
```
public void setToIdentity()
```
    Specified by:
    
    setToIdentity in interface MutableTransformer
    
    Overrides:
    
    setToIdentity in class MutableTransformerDecorator
  - transform
```
public abstract java.awt.geom.Point2D transform(java.awt.geom.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
  - inverseTransform
```
public abstract java.awt.geom.Point2D inverseTransform(java.awt.geom.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
  - getDistanceFromCenter
```
public double getDistanceFromCenter(java.awt.geom.Point2D p)
```
  - transform
```
public java.awt.Shape transform(java.awt.Shape shape)
```
    return the supplied shape, translated to the coordinates that result from calling transform on its center
    
    Specified by:
    
    transform in interface BidirectionalTransformer
    
    Specified by:
    
    transform in interface ShapeTransformer
    
    Overrides:
    
    transform in class MutableTransformerDecorator
    
    Returns:
    a GeneralPath (Shape) representing the screen points of the shape
  - inverseTransform
```
public java.awt.Shape inverseTransform(java.awt.Shape shape)
```
    return the supplied shape, translated to the coordinates that result from calling inverseTransform on its center
    
    Specified by:
    
    inverseTransform in interface BidirectionalTransformer
    
    Specified by:
    
    inverseTransform in interface ShapeTransformer
    
    Overrides:
    
    inverseTransform in class MutableTransformerDecorator
    
    Returns:

Class LensTransformer

Nested Class Summary

Field Summary

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

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

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

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

Field Detail

lensShape

magnification

Constructor Detail

LensTransformer

Method Detail

getMagnification

setMagnification

getViewCenter

setViewCenter

getViewRadius

setViewRadius

getRatio

setLensShape

getLensShape

setToIdentity

transform

inverseTransform

getDistanceFromCenter

transform

inverseTransform