| java.lang.Object
 javax.media.jai.OperationDescriptorImpl
javax.media.jai.operator.ConstantDescriptor
| ConstantDescriptor | | public class ConstantDescriptor extends OperationDescriptorImpl (Code) | | An OperationDescriptor describing the "Constant"
operation.
The Constant operation creates a multi-banded, tiled rendered
image, where all the pixels from the same band have a constant
value. The width and height of the image must be specified and
greater than 0. At least one constant must be supplied. The number
of bands of the image is determined by the number of constant pixel
values supplied in the "bandValues" parameter. The data type is
determined by the type of the constants; this means all elements of
the bandValues array must be of the same type.
If the bandValues array is a Short
array, then TYPE_USHORT is used if all values are
non-negative; otherwise TYPE_SHORT is used.
Resource List
| Name | Value |
|---|
| GlobalName | Constant |
| LocalName | Constant |
| Vendor | com.sun.media.jai |
| Description | Creates an image with
constant pixel values. |
| DocURL | http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/operator/ConstantDescriptor.html |
| Version | 1.0 |
| arg0Desc | Image width in pixels. |
| arg1Desc | Image height in pixels. |
| arg2Desc | The constant pixel band values. |
Parameter List
| Name | Class Type |
Default Value |
|---|
| width | java.lang.Float |
NO_PARAMETER_DEFAULT |
| height | java.lang.Float |
NO_PARAMETER_DEFAULT |
| bandValues | java.lang.Number[] |
NO_PARAMETER_DEFAULT |
See Also: javax.media.jai.OperationDescriptor |
| ConstantDescriptor | | public ConstantDescriptor()(Code) | | Constructor.
|
| validateParameters | | protected boolean validateParameters(String modeName, ParameterBlock args, StringBuffer message)(Code) | | Validates the input parameters.
In addition to the standard checks performed by the
superclass method, this method checks that "width" and "height"
are greater than 0 (for rendered mode) and that "bandValues" has
length at least 1.
|
| Methods inherited from javax.media.jai.OperationDescriptorImpl | public boolean arePropertiesSupported()(Code)(Java Doc)
protected static Class getDefaultSourceClass(String modeName)(Code)(Java Doc)
public Class getDestClass(String modeName)(Code)(Java Doc)
public Class getDestClass()(Code)(Java Doc)
public Object getInvalidRegion(String modeName, ParameterBlock oldParamBlock, RenderingHints oldHints, ParameterBlock newParamBlock, RenderingHints newHints, OperationNode node)(Code)(Java Doc)
public String getName()(Code)(Java Doc)
public int getNumParameters()(Code)(Java Doc)
public int getNumSources()(Code)(Java Doc)
public Class[] getParamClasses()(Code)(Java Doc)
public Object getParamDefaultValue(int index)(Code)(Java Doc)
public Object[] getParamDefaults()(Code)(Java Doc)
public Number getParamMaxValue(int index)(Code)(Java Doc)
public Number getParamMinValue(int index)(Code)(Java Doc)
public String[] getParamNames()(Code)(Java Doc)
public ParameterListDescriptor getParameterListDescriptor(String modeName)(Code)(Java Doc)
public PropertyGenerator[] getPropertyGenerators(String modeName)(Code)(Java Doc)
public PropertyGenerator[] getPropertyGenerators()(Code)(Java Doc)
public Class getRenderableDestClass()(Code)(Java Doc)
public Class[] getRenderableSourceClasses()(Code)(Java Doc)
public ResourceBundle getResourceBundle(Locale locale)(Code)(Java Doc)
public String[][] getResources(Locale locale)(Code)(Java Doc)
public Class[] getSourceClasses(String modeName)(Code)(Java Doc)
public Class[] getSourceClasses()(Code)(Java Doc)
public String[] getSourceNames()(Code)(Java Doc)
public String[] getSupportedModes()(Code)(Java Doc)
public boolean isImmediate()(Code)(Java Doc)
public boolean isModeSupported(String modeName)(Code)(Java Doc)
public boolean isRenderableSupported()(Code)(Java Doc)
public boolean isRenderedSupported()(Code)(Java Doc)
protected static Class[][] makeDefaultSourceClassList(String[] supportedModes, int numSources)(Code)(Java Doc)
public boolean validateArguments(String modeName, ParameterBlock args, StringBuffer msg)(Code)(Java Doc)
public boolean validateArguments(ParameterBlock args, StringBuffer msg)(Code)(Java Doc)
protected boolean validateParameters(String modeName, ParameterBlock args, StringBuffer msg)(Code)(Java Doc)
protected boolean validateParameters(ParameterBlock args, StringBuffer msg)(Code)(Java Doc)
public boolean validateRenderableArguments(ParameterBlock args, StringBuffer msg)(Code)(Java Doc)
protected boolean validateRenderableSources(ParameterBlock args, StringBuffer msg)(Code)(Java Doc)
protected boolean validateSources(String modeName, ParameterBlock args, StringBuffer msg)(Code)(Java Doc)
protected boolean validateSources(ParameterBlock args, StringBuffer msg)(Code)(Java Doc)
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