| java.lang.Object
 javax.media.jai.OperationDescriptorImpl
javax.media.jai.operator.DivideByConstDescriptor
| DivideByConstDescriptor | | public class DivideByConstDescriptor extends OperationDescriptorImpl (Code) | | An OperationDescriptor describing the
"DivideByConst" operation.
The DivideByConst operation takes one rendered or renderable
source image and an array of double constants, and divides every
pixel of the same band of the source by the constant from the
corresponding array entry. 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.
In case of division by 0, if the numerator is 0, then the
result is set to 0; otherwise, the result is set to the maximum
value supported by the destination data type.
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] = srcs[x][y][b]/constants[0];
} else {
dst[x][y][b] = srcs[x][y][b]/constants[b];
}
Resource List
| Name | Value |
|---|
| GlobalName | DivideByConst |
| LocalName | DivideByConst |
| Vendor | com.sun.media.jai |
| Description | Divides an image by constants. |
| DocURL | http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/operator/DivideByConstDescriptor.html |
| Version | 1.0 |
| arg0Desc | The constants to be divided by. |
Parameter List
| Name | Class Type |
Default Value |
|---|
| constants | double[] |
{1.0} |
See Also: javax.media.jai.OperationDescriptor
See Also: |
| DivideByConstDescriptor | | public DivideByConstDescriptor()(Code) | | Constructor.
|
| isRenderableSupported | | public boolean isRenderableSupported()(Code) | | Returns true since renderable operation is supported.
|
| validateParameters | | protected boolean validateParameters(ParameterBlock args, StringBuffer message)(Code) | | Validates the input parameters.
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.
|
| 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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