Package org.jungrapht.visualization.transform

Class MutableAffineTransformer

java.lang.Object

org.jungrapht.visualization.transform.AffineTransformer

org.jungrapht.visualization.transform.MutableAffineTransformer

All Implemented Interfaces:

BidirectionalTransformer, MutableTransformer, ShapeTransformer, ChangeEventSupport

Direct Known Subclasses:

TransformSupport

public class MutableAffineTransformer
extends AffineTransformer
implements MutableTransformer, ShapeTransformer, ChangeEventSupport

Provides methods to mutate the AffineTransform used by AffineTransformer base class to map points from one coordinate system to another.

Author:

Tom Nelson

Field Summary

Fields

Modifier and Type	Field	Description
protected ChangeEventSupport	changeSupport

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

inverse, transform

Constructor Summary

Constructors

Constructor	Description
MutableAffineTransformer()	create an instance that does not transform points
MutableAffineTransformer(AffineTransform transform)	Create an instance with the supplied transform

Method Summary

Modifier and Type	Method	Description
void	addChangeListener(ChangeListener l)	Adds a ChangeListener.
void	concatenate(AffineTransform xform)
void	fireStateChanged()	Notifies all listeners that have registered interest for notification on this event type.
ChangeListener[]	getChangeListeners()	Returns an array of all the ChangeListeners added with addChangeListener().
void	preConcatenate(AffineTransform xform)
void	removeChangeListener(ChangeListener l)	Removes a ChangeListener.
void	rotate(double radians, double x, double y)	rotates the current transform at the supplied points
void	rotate(double theta, Point2D from)	preconcatenates the rotation at the supplied point with the current transform
void	scale(double scalex, double scaley, Point2D from)	setter for the scale fires a PropertyChangeEvent with the AffineTransforms representing the previous and new values for scale and offset
void	setScale(double scalex, double scaley, Point2D from)	setter for the scale fires a PropertyChangeEvent with the AffineTransforms representing the previous and new values for scale and offset
void	setToIdentity()
void	setTranslate(double tx, double ty)	Replace the Transform's translate x and y values with the passed values, leaving the scale values unchanged.
void	shear(double shx, double shy, Point2D from)	shears the transform by passed parameters
void	translate(double offsetx, double offsety)	Apply the passed values to the current Transform

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

getInverse, getRotation, getScale, getScaleX, getScaleY, getShearX, getShearY, getTransform, getTranslateX, getTranslateY, inverseTransform, inverseTransform, inverseTransform, scale, setTransform, transform, transform, transform

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.transform.BidirectionalTransformer

inverseTransform, inverseTransform, transform, transform

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

getRotation, getScale, getScaleX, getScaleY, getShearX, getShearY, getTransform, getTranslateX, getTranslateY, scale

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

inverseTransform, transform

Field Detail

changeSupport

protected ChangeEventSupport changeSupport

Constructor Detail

MutableAffineTransformer

public MutableAffineTransformer()

create an instance that does not transform points

MutableAffineTransformer

public MutableAffineTransformer(AffineTransform transform)

Create an instance with the supplied transform

Parameters:

transform - the transform to use

Method Detail

scale

public void scale(double scalex,
                  double scaley,
                  Point2D from)

setter for the scale fires a PropertyChangeEvent with the AffineTransforms representing the previous and new values for scale and offset

Specified by:

scale in interface MutableTransformer

Parameters:

scalex - the amount to scale in the x direction

scaley - the amount to scale in the y direction

from - the point to transform

setScale

public void setScale(double scalex,
                     double scaley,
                     Point2D from)

setter for the scale fires a PropertyChangeEvent with the AffineTransforms representing the previous and new values for scale and offset

Specified by:

setScale in interface MutableTransformer

Parameters:

scalex - the amount to scale in the x direction

scaley - the amount to scale in the y direction

from - the point to transform

shear

public void shear(double shx,
                  double shy,
                  Point2D from)

shears the transform by passed parameters

Specified by:

shear in interface MutableTransformer

Parameters:

shx - x value to shear

shy - y value to shear

from - the point to transform

setTranslate

public void setTranslate(double tx,
                         double ty)

Replace the Transform's translate x and y values with the passed values, leaving the scale values unchanged.

Specified by:

setTranslate in interface MutableTransformer

Parameters:

tx - the x value of the translation

ty - the y value of the translation

translate

public void translate(double offsetx,
                      double offsety)

Apply the passed values to the current Transform

Specified by:

translate in interface MutableTransformer

Parameters:

offsetx - the x-value

offsety - the y-value

rotate

public void rotate(double theta,
                   Point2D from)

preconcatenates the rotation at the supplied point with the current transform

Specified by:

rotate in interface MutableTransformer

Parameters:

theta - the angle by which to rotate the point

from - the point to transform

rotate

public void rotate(double radians,
                   double x,
                   double y)

rotates the current transform at the supplied points

Specified by:

rotate in interface MutableTransformer

Parameters:

radians - angle by which to rotate the supplied coordinates

x - the x coordinate of the point to transform

y - the y coordinate of the point to transform

concatenate

public void concatenate(AffineTransform xform)

Specified by:

concatenate in interface MutableTransformer

preConcatenate

public void preConcatenate(AffineTransform xform)

Specified by:

preConcatenate in interface MutableTransformer

addChangeListener

public void addChangeListener(ChangeListener l)

Adds a ChangeListener.

Specified by:

addChangeListener in interface ChangeEventSupport

Parameters:

l - the listener to be added

removeChangeListener

public void removeChangeListener(ChangeListener l)

Removes a ChangeListener.

Specified by:

removeChangeListener in interface ChangeEventSupport

Parameters:

l - the listener to be removed

getChangeListeners

public ChangeListener[] getChangeListeners()

Returns an array of all the ChangeListeners added with addChangeListener().

Specified by:

getChangeListeners in interface ChangeEventSupport

Returns:

all of the ChangeListeners added or an empty array if no listeners have been added

fireStateChanged

public void fireStateChanged()

Notifies all listeners that have registered interest for notification on this event type. The event instance is lazily created.

Specified by:

fireStateChanged in interface ChangeEventSupport

See Also:

EventListenerList

setToIdentity

public void setToIdentity()

Specified by:

setToIdentity in interface MutableTransformer