public abstract interface CompositeContext

The CompositeContext interface defines the encapsulated and optimized environment for a compositing operation. CompositeContext objects maintain state for compositing operations. In a multi-threaded environment, several contexts can exist simultaneously for a single Composite object.

public void compose(Raster, Raster, WritableRaster)

Composes the two source Raster objects and places the result in the destination WritableRaster. Note that the destination can be the same object as either the first or second source. Note that dstIn and dstOut must be compatible with the dstColorModel passed to the Composite#createContext(java.awt.image.ColorModel, java.awt.image.ColorModel, java.awt.RenderingHints) createContext method of the Composite interface.

Raster src: the first source for the compositing operation

Raster dstIn: the second source for the compositing operation

WritableRaster dstOut: the WritableRaster into which the result of the operation is stored

public void dispose()

Releases resources allocated for a context.