java.awt.image

## Interface BufferedImageOp

- All Known Implementing Classes:
    AffineTransformOp, ColorConvertOp, ConvolveOp, LookupOp, RescaleOp

      public interface BufferedImageOp

  This interface describes single-input/single-output operations performed on `BufferedImage` objects. It is implemented by `AffineTransformOp`, `ConvolveOp`, `ColorConvertOp`, `RescaleOp`, and `LookupOp`. These objects can be passed into a `BufferedImageFilter` to operate on a `BufferedImage` in the ImageProducer-ImageFilter-ImageConsumer paradigm.

  Classes that implement this interface must specify whether or not they allow in-place filtering-- filter operations where the source object is equal to the destination object.

  This interface cannot be used to describe more sophisticated operations such as those that take multiple sources. Note that this restriction also means that the values of the destination pixels prior to the operation are not used as input to the filter operation.

  See Also:
    `BufferedImage`, `BufferedImageFilter`, `AffineTransformOp`, `BandCombineOp`, `ColorConvertOp`, `ConvolveOp`, `LookupOp`, `RescaleOp`

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `BufferedImage` | `createCompatibleDestImage(BufferedImage src, ColorModel destCM)` | Creates a zeroed destination image with the correct size and number of bands.
    `BufferedImage` | `filter(BufferedImage src, BufferedImage dest)` | Performs a single-input/single-output operation on a `BufferedImage`.
    `Rectangle2D` | `getBounds2D(BufferedImage src)` | Returns the bounding box of the filtered destination image.
    `Point2D` | `getPoint2D(Point2D srcPt, Point2D dstPt)` | Returns the location of the corresponding destination point given a point in the source image.
    `RenderingHints` | `getRenderingHints()` | Returns the rendering hints for this operation.

- - ### Method Detail

    - #### filter

          BufferedImage filter(BufferedImage src,
                               BufferedImage dest)

      Performs a single-input/single-output operation on a `BufferedImage`. If the color models for the two images do not match, a color conversion into the destination color model is performed. If the destination image is null, a `BufferedImage` with an appropriate `ColorModel` is created.

      An `IllegalArgumentException` may be thrown if the source and/or destination image is incompatible with the types of images $ allowed by the class implementing this filter.

      Parameters:
        `src` - The `BufferedImage` to be filtered
        `dest` - The `BufferedImage` in which to store the results$
      Returns:
        The filtered `BufferedImage`.
      Throws:
        `IllegalArgumentException` - If the source and/or destination image is not compatible with the types of images allowed by the class implementing this filter.

    - #### getBounds2D

          Rectangle2D getBounds2D(BufferedImage src)

      Returns the bounding box of the filtered destination image. An `IllegalArgumentException` may be thrown if the source image is incompatible with the types of images allowed by the class implementing this filter.
      Parameters:
        `src` - The `BufferedImage` to be filtered
      Returns:
        The `Rectangle2D` representing the destination image's bounding box.

    - #### createCompatibleDestImage

          BufferedImage createCompatibleDestImage(BufferedImage src,
                                                  ColorModel destCM)

      Creates a zeroed destination image with the correct size and number of bands. An `IllegalArgumentException` may be thrown if the source image is incompatible with the types of images allowed by the class implementing this filter.
      Parameters:
        `src` - The `BufferedImage` to be filtered
        `destCM` - `ColorModel` of the destination. If null, the `ColorModel` of the source is used.
      Returns:
        The zeroed destination image.

    - #### getPoint2D

          Point2D getPoint2D(Point2D srcPt,
                             Point2D dstPt)

      Returns the location of the corresponding destination point given a point in the source image. If `dstPt` is specified, it is used to hold the return value.
      Parameters:
        `srcPt` - the `Point2D` that represents the point in the source image
        `dstPt` - The `Point2D` in which to store the result
      Returns:
        The `Point2D` in the destination image that corresponds to the specified point in the source image.

    - #### getRenderingHints

          RenderingHints getRenderingHints()

      Returns the rendering hints for this operation.
      Returns:
        The `RenderingHints` object for this `BufferedImageOp`. Returns null if no hints have been set.

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