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Method Summary | |
RenderedImage | create(ParameterBlock pb,
Hashtable renderHints,
Hashtable renderHintsObserved)
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Method Detail |
public RenderedImage create(ParameterBlock pb, Hashtable renderHints, Hashtable renderHintsObserved)
The create() method can return null if the RenderedImageFactory is not capable of producing output for the given set of source images and parameters. For example, if a RenderedImageFactory is only capable of performing a 3x3 convolution on single-banded image data, and the source image has multiple bands or the convolution Kernel is 5x5, null should be returned. Hints should be taken into account, but can be ignored.
pb
- a ParameterBlock containing sources and parameters
for the RenderedImage to be created.
renderHints
- a Hashtable of hints to the RenderedImageFactory.
renderHintsObserved
- a Hashtable of hints observed by the RIF.
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