javax.media.jai.operator
Class AbsoluteDescriptor

java.lang.Object
  javax.media.jai.OperationDescriptorImpl
      javax.media.jai.operator.AbsoluteDescriptor

All Implemented Interfaces:

OperationDescriptor, RegistryElementDescriptor, Serializable

public class AbsoluteDescriptor

extends OperationDescriptorImpl

An OperationDescriptor describing the "Absolute" operation.

The "Absolute" operation takes a single rendered or renderable source image, and computes the mathematical absolute value of each pixel:

 if (src[x][y][b] < 0) {
     dst[x][y][b] = -src[x][y][b];
 } else {
     dst[x][y][b] =  src[x][y][b];
 }
 

For signed integral data types, the smallest value of the data type does not have a positive counterpart; such values will be left unchanged. This behavior parallels that of the Java unary minus operator (see The Java Language Specification, section 15.14.4).

Resource List

Name	Value
GlobalName	Absolute
LocalName	Absolute
Vendor	com.sun.media.jai
Description	Replaces the pixel values of an image by their absolute values.
DocURL	http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/operator/AbsoluteDescriptor.html
Version	1.0

No parameters are needed for the "Absolute" operation.

See Also:

OperationDescriptor, Serialized Form

Field Summary

Fields inherited from class javax.media.jai.OperationDescriptorImpl

sourceNames, supportedModes

Fields inherited from interface javax.media.jai.OperationDescriptor

NO_PARAMETER_DEFAULT

Constructor Summary

AbsoluteDescriptor()
Constructor.

Method Summary

static RenderedOp	create(RenderedImage source0, RenderingHints hints) Replaces the pixel values of an image by their absolute values.
static RenderableOp	createRenderable(RenderableImage source0, RenderingHints hints) Replaces the pixel values of an image by their absolute values.
boolean	isRenderableSupported() Returns true since renderable operation is supported.

Methods inherited from class javax.media.jai.OperationDescriptorImpl

arePropertiesSupported, getDefaultSourceClass, getDestClass, getDestClass, getInvalidRegion, getName, getNumParameters, getNumSources, getParamClasses, getParamDefaults, getParamDefaultValue, getParameterListDescriptor, getParamMaxValue, getParamMinValue, getParamNames, getPropertyGenerators, getPropertyGenerators, getRenderableDestClass, getRenderableSourceClasses, getResourceBundle, getResources, getSourceClasses, getSourceClasses, getSourceNames, getSupportedModes, isImmediate, isModeSupported, isRenderedSupported, makeDefaultSourceClassList, validateArguments, validateArguments, validateParameters, validateParameters, validateRenderableArguments, validateRenderableSources, validateSources, validateSources

Methods inherited from class java.lang.Object

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

Constructor Detail

AbsoluteDescriptor

public AbsoluteDescriptor()

Constructor.

Method Detail

isRenderableSupported

public boolean isRenderableSupported()

Returns true since renderable operation is supported.

Specified by:

isRenderableSupported in interface OperationDescriptor

Overrides:

isRenderableSupported in class OperationDescriptorImpl

See Also:

OperationDescriptorImpl.isModeSupported(java.lang.String)

create

public static RenderedOp create(RenderedImage source0,
                                RenderingHints hints)

Replaces the pixel values of an image by their absolute values.

Creates a ParameterBlockJAI from all supplied arguments except hints and invokes JAI.create(String,ParameterBlock,RenderingHints).

Parameters:

source0 - RenderedImage source 0.

hints - The RenderingHints to use. May be null.

Returns:

The RenderedOp destination.

Throws:

IllegalArgumentException - if source0 is null.

See Also:

JAI, ParameterBlockJAI, RenderedOp

createRenderable

public static RenderableOp createRenderable(RenderableImage source0,
                                            RenderingHints hints)

Replaces the pixel values of an image by their absolute values.

Creates a ParameterBlockJAI from all supplied arguments except hints and invokes JAI.createRenderable(String,ParameterBlock,RenderingHints).

Parameters:

source0 - RenderableImage source 0.

hints - The RenderingHints to use. May be null.

Returns:

The RenderableOp destination.

Throws:

IllegalArgumentException - if source0 is null.

See Also:

JAI, ParameterBlockJAI, RenderableOp