Package com.dkt.graphics.extras

Class GTransform

java.lang.Object

com.dkt.graphics.elements.GraphicE

com.dkt.graphics.extras.GTransform

All Implemented Interfaces:

Cloneable

public class GTransform
extends GraphicE

This class wraps a AffineTransform in a GraphicE, in order to give a bit more "flexibility" to Graphic objects

Author:

Federico Vera <[email protected]>

Field Summary

Fields inherited from class com.dkt.graphics.elements.GraphicE

STROKE

Constructor Summary

Constructors

Constructor	Description
GTransform(double sx, double sy)	Create a scaling GTransform
GTransform(int x, int y, double phi)	Create a rotating GTransform
GTransform(GTransform e)	Copy constructor

Method Summary

Modifier and Type	Method	Description
GraphicE	clone()
void	draw(Graphics2D g)	Draws the component on the given graphics
boolean	equals(Object obj)
AffineTransform	getTransform()	Retrieves the AffineTransform used in this GTransform
int	hashCode()
GTransform	invert()	Retrieves a new GTransform that reverses the effects of this one
void	rotate(double phi)	Rotates the graphics around the origin of coordinates a given angle
void	rotate(int x, int y, double phi)	Rotates the graphics around the point (x, y) a given angle
void	scale(double sx, double sy)	Scales the graphics
void	traslate(int x, int y)	Traslates this element on X and Y

Methods inherited from class com.dkt.graphics.elements.GraphicE

getPaint, getStroke, setPaint, setStroke

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Details

GTransform

public GTransform(GTransform e)

Copy constructor

Parameters:

e - GTransform to copy

Throws:

IllegalArgumentException - if e is null

GTransform

public GTransform(double sx,
 double sy)

Create a scaling GTransform

Parameters:

sx - horizontal scale

sy - vertical scale

GTransform

public GTransform(int x,
 int y,
 double phi)

Create a rotating GTransform

Parameters:

x - x coordinate of the pivot point

y - y coordinate of the pivot point

phi - angle in degrees

Method Details

scale

public void scale(double sx,
 double sy)

Scales the graphics

Parameters:

sx - horizontal scale

sy - vertical scale

rotate

public void rotate(int x,
 int y,
 double phi)

Rotates the graphics around the point (x, y) a given angle

Parameters:

x - x coordinate of the pivot point

y - y coordinate of the pivot point

phi - angle in degrees

rotate

public void rotate(double phi)

Rotates the graphics around the origin of coordinates a given angle

Parameters:

phi - angle in degrees

getTransform

public AffineTransform getTransform()

Retrieves the AffineTransform used in this GTransform

Returns:

transform

invert

public GTransform invert()
                  throws NoninvertibleTransformException

Retrieves a new GTransform that reverses the effects of this one

Returns:

inverse transform

Throws:

NoninvertibleTransformException - if the transform is not invertible, this usually happens when using sheer, so it's very unlikely here

traslate

public void traslate(int x,
 int y)

Description copied from class: GraphicE

Traslates this element on X and Y

Specified by:

traslate in class GraphicE

Parameters:

x - size in px of the horizontal translation

y - size in px of the vertical translation

draw

public void draw(Graphics2D g)

Description copied from class: GraphicE

Draws the component on the given graphics

Specified by:

draw in class GraphicE

Parameters:

g - where to draw

clone

public GraphicE clone()

Specified by:

clone in class GraphicE

hashCode

public int hashCode()

Overrides:

hashCode in class GraphicE

equals

public boolean equals(Object obj)

Overrides:

equals in class GraphicE