Class GaussianBlurRable8Bit

java.lang.Object

org.apache.batik.ext.awt.image.renderable.AbstractRable

org.apache.batik.ext.awt.image.renderable.AbstractColorInterpolationRable

org.apache.batik.ext.awt.image.renderable.GaussianBlurRable8Bit

All Implemented Interfaces:

RenderableImage, Filter, FilterColorInterpolation, GaussianBlurRable

public class GaussianBlurRable8Bit
extends AbstractColorInterpolationRable
implements GaussianBlurRable

GaussianBlurRable implementation

Version:

$Id$

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final double	DSQRT2PI	Constant: 3*sqrt(2*PI)/4
static final double	eps
private double	stdDeviationX	Deviation along the x-axis
private double	stdDeviationY	Deviation along the y-axis

Fields inherited from class AbstractColorInterpolationRable

csLinear

Fields inherited from class AbstractRable

props, srcs, stamp

Fields inherited from interface RenderableImage

HINTS_OBSERVED

Constructor Summary

Constructors

Constructor	Description
GaussianBlurRable8Bit(Filter src, double stdevX, double stdevY)

Method Summary

Modifier and Type	Method	Description
RenderedImage	createRendering(RenderContext rc)
static boolean	eps_abs_eq(double f1, double f2)
static boolean	eps_eq(double f1, double f2)
Rectangle2D	getBounds2D()	Grow the source's bounds
Shape	getDependencyRegion(int srcIndex, Rectangle2D outputRgn)	Returns the region of input data is is required to generate outputRgn.
Shape	getDirtyRegion(int srcIndex, Rectangle2D inputRgn)	This calculates the region of output that is affected by a change in a region of input.
Filter	getSource()	Returns the source of the blur operation
double	getStdDeviationX()	Returns the deviation along the x-axis, in user space.
double	getStdDeviationY()	Returns the deviation along the y-axis, in user space.
void	setSource(Filter src)	Sets the source of the blur operation
void	setStdDeviationX(double stdDeviationX)	The deviation along the x axis, in user space.
void	setStdDeviationY(double stdDeviationY)	The deviation along the y axis, in user space.

Methods inherited from class AbstractColorInterpolationRable

convertSourceCS, convertSourceCS, getOperationColorSpace, isColorSpaceLinear, setColorSpaceLinear

Methods inherited from class AbstractRable

createDefaultRendering, createScaledRendering, getHeight, getMinX, getMinY, getProperty, getPropertyNames, getSources, getTimeStamp, getWidth, init, init, init, init, isDynamic, touch

Methods inherited from class Object

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

Methods inherited from interface Filter

getTimeStamp

Methods inherited from interface FilterColorInterpolation

getOperationColorSpace, isColorSpaceLinear, setColorSpaceLinear

Methods inherited from interface RenderableImage

createDefaultRendering, createScaledRendering, getHeight, getMinX, getMinY, getProperty, getPropertyNames, getSources, getWidth, isDynamic

Field Details

stdDeviationX

private double stdDeviationX

Deviation along the x-axis

stdDeviationY

private double stdDeviationY

Deviation along the y-axis

DSQRT2PI

static final double DSQRT2PI

Constant: 3*sqrt(2*PI)/4

eps

public static final double eps

See Also:

• Constant Field Values

Constructor Details

GaussianBlurRable8Bit

public GaussianBlurRable8Bit(Filter src,
 double stdevX,
 double stdevY)

Method Details

setStdDeviationX

public void setStdDeviationX(double stdDeviationX)

The deviation along the x axis, in user space.

Specified by:

setStdDeviationX in interface GaussianBlurRable

Parameters:

stdDeviationX - should be greater than zero.

setStdDeviationY

public void setStdDeviationY(double stdDeviationY)

The deviation along the y axis, in user space.

Specified by:

setStdDeviationY in interface GaussianBlurRable

Parameters:

stdDeviationY - should be greater than zero

getStdDeviationX

public double getStdDeviationX()

Returns the deviation along the x-axis, in user space.

Specified by:

getStdDeviationX in interface GaussianBlurRable

getStdDeviationY

public double getStdDeviationY()

Returns the deviation along the y-axis, in user space.

Specified by:

getStdDeviationY in interface GaussianBlurRable

setSource

public void setSource(Filter src)

Sets the source of the blur operation

Specified by:

setSource in interface GaussianBlurRable

Parameters:

src - image to blurred.

getBounds2D

public Rectangle2D getBounds2D()

Grow the source's bounds

Specified by:

getBounds2D in interface Filter

Overrides:

getBounds2D in class AbstractRable

getSource

public Filter getSource()

Returns the source of the blur operation

Specified by:

getSource in interface GaussianBlurRable

eps_eq

public static boolean eps_eq(double f1,
 double f2)

eps_abs_eq

public static boolean eps_abs_eq(double f1,
 double f2)

createRendering

public RenderedImage createRendering(RenderContext rc)

Specified by:

createRendering in interface RenderableImage

getDependencyRegion

public Shape getDependencyRegion(int srcIndex,
 Rectangle2D outputRgn)

Returns the region of input data is is required to generate outputRgn.

Specified by:

getDependencyRegion in interface Filter

Overrides:

getDependencyRegion in class AbstractRable

Parameters:

srcIndex - The source to do the dependency calculation for.

outputRgn - The region of output you are interested in generating dependencies for. The is given in the user coordiate system for this node.

Returns:

The region of input required. This is in the user coordinate system for the source indicated by srcIndex.

getDirtyRegion

public Shape getDirtyRegion(int srcIndex,
 Rectangle2D inputRgn)

This calculates the region of output that is affected by a change in a region of input.

Specified by:

getDirtyRegion in interface Filter

Overrides:

getDirtyRegion in class AbstractRable

Parameters:

srcIndex - The input that inputRgn reflects changes in.

inputRgn - the region of input that has changed, used to calculate the returned shape. This is given in the user coordinate system of the source indicated by srcIndex.

Returns:

The region of output that would be invalid given a change to inputRgn of the source selected by srcIndex. this is in the user coordinate system of this node.