| java.lang.Object
 javax.media.jai.OperationDescriptorImpl
javax.media.jai.operator.OverlayDescriptor
| OverlayDescriptor | | public class OverlayDescriptor extends OperationDescriptorImpl (Code) | | An OperationDescriptor describing the "Overlay" operation.
The Overlay operation takes two rendered or renderable source
images, and overlays the second source image on top of the first
source image. No additional parameters are required.
The two source images must have the same data type and number
of bands. However, their SampleModel types may
differ. The destination image will always have the same bounding
rectangle as the first source image, that is, the image on the
bottom, and the same data type and number of bands as the two
sources. In case the two sources don't intersect, the destination
will be the same as the first source.
The destination pixel values are defined by the pseudocode:
if (srcs[1] contains the point (x, y)) {
dst[x][y][b] = srcs[1][x][y][b];
} else {
dst[x][y][b] = srcs[0][x][y][b];
}
Resource List
| Name | Value |
|---|
| GlobalName | Overlay |
| LocalName | Overlay |
| Vendor | com.sun.media.jai |
| Description | Overlays one image on top of
another. |
| DocURL | http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/operator/OverlayDescriptor.html |
| Version | 1.0 |
No parameters are needed for this operation.
See Also: javax.media.jai.OperationDescriptor
See Also: |
| OverlayDescriptor | | public OverlayDescriptor()(Code) | | Constructor.
|
| validateSources | | protected boolean validateSources(String modeName, ParameterBlock args, StringBuffer msg)(Code) | | Validates the input sources.
In addition to the standard checks performed by the
superclass method, this method checks that the source image
SampleModels have the same number of bands and
transfer types.
|
| 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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