javax.media.jai.operator
Class AddConstDescriptor
java.lang.Object
|
+--javax.media.jai.OperationDescriptorImpl
|
+--javax.media.jai.operator.AddConstDescriptor
- All Implemented Interfaces:
- OperationDescriptor, RegistryElementDescriptor, Serializable
- public class AddConstDescriptor
- extends OperationDescriptorImpl
An OperationDescriptor describing the "AddConst" operation.
The AddConst operation takes one rendered or renderable source
image and an array of double constants, and adds a constant to
every pixel of its corresponding band of the source. If the number
of constants supplied is less than the number of bands of the
destination, then the constant from entry 0 is applied to all the
bands. Otherwise, a constant from a different entry is applied to
each band.
By default, the destination image bound, data type, and number of
bands are the same as the source image. If the result of the operation
underflows/overflows the minimum/maximum value supported by the
destination data type, then it will be clamped to the minimum/maximum
value respectively.
The destination pixel values are defined by the pseudocode:
if (constants.length < dstNumBands) {
dst[x][y][b] = src[x][y][b] + constants[0];
} else {
dst[x][y][b] = src[x][y][b] + constants[b];
}
Resource List
| Name | Value |
|---|
| GlobalName | AddConst |
| LocalName | AddConst |
| Vendor | com.sun.media.jai |
| Description | Adds constants to a rendered image. | |
| DocURL | http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/operator/AddConstDescriptor.html |
| Version | 1.0 |
| arg0Desc | The constants to be added. |
Parameter List
| Name | Class Type |
Default Value |
|---|
| constants | double[] |
NO_PARAMETER_DEFAULT |
- See Also:
OperationDescriptor, Serialized Form
| 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,
validateRenderableArguments,
validateRenderableSources,
validateSources,
validateSources |
| Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
AddConstDescriptor
public AddConstDescriptor()
- Constructor.
isRenderableSupported
public boolean isRenderableSupported()
- Returns
true since renderable operation is supported.
- Overrides:
- isRenderableSupported in class OperationDescriptorImpl
- Tags copied from class: OperationDescriptorImpl
- See Also:
OperationDescriptorImpl.isModeSupported(java.lang.String)
validateParameters
protected boolean validateParameters(ParameterBlock args,
StringBuffer message)
- Validates the input parameter.
In addition to the standard checks performed by the
superclass method, this method checks that the length of the
"constants" array is at least 1.
- Overrides:
- validateParameters in class OperationDescriptorImpl
- Tags copied from class: OperationDescriptorImpl
- Throws:
- IllegalArgumentException - if
args is null.- IllegalArgumentException - if
msg is null
and the validation fails. - See Also:
OperationDescriptorImpl.validateParameters(java.lang.String, java.awt.image.renderable.ParameterBlock, java.lang.StringBuffer)