edu.uci.ics.jung.visualization.transform
Class AffineTransformer

java.lang.Object
  edu.uci.ics.jung.visualization.transform.AffineTransformer

All Implemented Interfaces:

BidirectionalTransformer, ShapeTransformer

Direct Known Subclasses:

MutableAffineTransformer

public class AffineTransformer
extends Object
implements BidirectionalTransformer, ShapeTransformer

Provides methods to map points from one coordinate system to another, by delegating to a wrapped AffineTransform (uniform) and its inverse.

Author:

Tom Nelson

Field Summary

protected AffineTransform	inverse
protected AffineTransform	transform the AffineTransform to use.

Constructor Summary

AffineTransformer()
create an instance that does not transform points

AffineTransformer(AffineTransform transform)
Create an instance with the supplied transform

Method Summary

AffineTransform	getInverse()
double	getRotation()
double	getScale()
double	getScaleX() getter for scalex
double	getScaleY() getter for scaley
double	getShearX() getter for shear in x axis
double	getShearY() getter for shear in y axis
AffineTransform	getTransform()
double	getTranslateX() get the translate x value
double	getTranslateY() get the translate y value
Point2D	inverseTransform(Point2D p) applies the inverse transform to the supplied point
Shape	inverseTransform(Shape shape) transform the supplied shape from graph coordinates to screen coordinates
void	setTransform(AffineTransform transform)
String	toString()
Point2D	transform(Point2D p) applies the transform to the supplied point
Shape	transform(Shape shape) transform the supplied shape from graph coordinates to screen coordinates

Methods inherited from class java.lang.Object

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

Field Detail

inverse

protected AffineTransform inverse

transform

protected AffineTransform transform

the AffineTransform to use. Initialize to identity

Constructor Detail

AffineTransformer

public AffineTransformer()

create an instance that does not transform points

AffineTransformer

public AffineTransformer(AffineTransform transform)

Create an instance with the supplied transform

Method Detail

getTransform

public AffineTransform getTransform()

Returns:

Returns the transform.

setTransform

public void setTransform(AffineTransform transform)

Parameters:

transform - The transform to set.

inverseTransform

public Point2D inverseTransform(Point2D p)

applies the inverse transform to the supplied point

Specified by:

inverseTransform in interface BidirectionalTransformer

Parameters:

p -

Returns:

getInverse

public AffineTransform getInverse()

getScaleX

public double getScaleX()

getter for scalex

getScaleY

public double getScaleY()

getter for scaley

getScale

public double getScale()

getShearX

public double getShearX()

getter for shear in x axis

getShearY

public double getShearY()

getter for shear in y axis

getTranslateX

public double getTranslateX()

get the translate x value

getTranslateY

public double getTranslateY()

get the translate y value

transform

public Point2D transform(Point2D p)

applies the transform to the supplied point

Specified by:

transform in interface BidirectionalTransformer

Parameters:

p - graph point to convert

Returns:

screen point

transform

public Shape transform(Shape shape)

transform the supplied shape from graph coordinates to screen coordinates

Specified by:

transform in interface BidirectionalTransformer

Specified by:

transform in interface ShapeTransformer

Returns:

the GeneralPath of the transformed shape

inverseTransform

public Shape inverseTransform(Shape shape)

transform the supplied shape from graph coordinates to screen coordinates

Specified by:

inverseTransform in interface BidirectionalTransformer

Specified by:

inverseTransform in interface ShapeTransformer

Returns:

the GeneralPath of the transformed shape

getRotation

public double getRotation()

toString

public String toString()

Overrides:

toString in class Object