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

Fields

Modifier and Type	Field and Description
protected AffineTransform	inverse
protected AffineTransform	transform The AffineTransform to use; initialized to identity.

Constructor Summary

Constructors

Constructor and Description
AffineTransformer() Create an instance that does not transform points.
AffineTransformer(AffineTransform transform) Create an instance with the supplied transform.

Method Summary

Modifier and Type	Method and Description
AffineTransform	getInverse()
double	getRotation()
double	getScale()
double	getScaleX()
double	getScaleY()
double	getShearX()
double	getShearY()
AffineTransform	getTransform()
double	getTranslateX()
double	getTranslateY()
Point2D	inverseTransform(Point2D p) applies the inverse transform to the supplied point
Shape	inverseTransform(Shape shape) Transform the supplied shape from screen (view) to graph (layout) 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 (layout) to screen (view) 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; initialized 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.

Parameters:

transform - the transform to use

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 - the point to transform

Returns:

the transformed point

getInverse

public AffineTransform getInverse()

getScaleX

public double getScaleX()

Returns:

the transform's x scale value

getScaleY

public double getScaleY()

Returns:

the transform's y scale value

getScale

public double getScale()

Returns:

the transform's overall scale magnitude

getShearX

public double getShearX()

Returns:

the transform's x shear value

getShearY

public double getShearY()

Returns:

the transform's y shear value

getTranslateX

public double getTranslateX()

Returns:

the transform's x translate value

getTranslateY

public double getTranslateY()

Returns:

the transform's y translate value

transform

public Point2D transform(Point2D p)

Applies the transform to the supplied point.

Specified by:

transform in interface BidirectionalTransformer

Parameters:

p - the point to be transformed

Returns:

the transformed point

transform

public Shape transform(Shape shape)

Transform the supplied shape from graph (layout) to screen (view) coordinates.

Specified by:

transform in interface ShapeTransformer

Parameters:

shape - the Shape to transform

Returns:

the GeneralPath of the transformed shape

inverseTransform

public Shape inverseTransform(Shape shape)

Transform the supplied shape from screen (view) to graph (layout) coordinates.

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