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## org.jvnet.substance.utils.filters
Class AbstractFilter

    java.lang.Object
      org.jvnet.substance.utils.filters.AbstractFilter

All Implemented Interfaces:
  java.awt.image.BufferedImageOp

Direct Known Subclasses:
  ColorSchemeFilter, GrayscaleFilter, NegatedFilter, TranslucentFilter

    public abstract class AbstractFilter

extends java.lang.Object
implements java.awt.image.BufferedImageOp

Provides an abstract implementation of the `BufferedImageOp` interface. This class can be used to created new image filters based on `BufferedImageOp`.

Author:
  Romain Guy

Constructor Summary
`AbstractFilter()`

Method Summary
`java.awt.image.BufferedImage` | `createCompatibleDestImage(java.awt.image.BufferedImage src, java.awt.image.ColorModel destCM)`
`abstract java.awt.image.BufferedImage` | `filter(java.awt.image.BufferedImage src, java.awt.image.BufferedImage dest)`
`java.awt.geom.Rectangle2D` | `getBounds2D(java.awt.image.BufferedImage src)`
`protected int[]` | `getPixels(java.awt.image.BufferedImage img, int x, int y, int w, int h, int[] pixels)`
`java.awt.geom.Point2D` | `getPoint2D(java.awt.geom.Point2D srcPt, java.awt.geom.Point2D dstPt)`
`java.awt.RenderingHints` | `getRenderingHints()`
`protected void` | `setPixels(java.awt.image.BufferedImage img, int x, int y, int w, int h, int[] pixels)` Writes a rectangular area of pixels in the destination `BufferedImage`.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### AbstractFilter

    public AbstractFilter()

Method Detail

### filter

    public abstract java.awt.image.BufferedImage filter(java.awt.image.BufferedImage src,
                                                        java.awt.image.BufferedImage dest)

  Specified by:
    `filter` in interface `java.awt.image.BufferedImageOp`

### getBounds2D

    public java.awt.geom.Rectangle2D getBounds2D(java.awt.image.BufferedImage src)

  Specified by:
    `getBounds2D` in interface `java.awt.image.BufferedImageOp`

### createCompatibleDestImage

    public java.awt.image.BufferedImage createCompatibleDestImage(java.awt.image.BufferedImage src,
                                                                  java.awt.image.ColorModel destCM)

  Specified by:
    `createCompatibleDestImage` in interface `java.awt.image.BufferedImageOp`

### getPoint2D

    public java.awt.geom.Point2D getPoint2D(java.awt.geom.Point2D srcPt,
                                            java.awt.geom.Point2D dstPt)

  Specified by:
    `getPoint2D` in interface `java.awt.image.BufferedImageOp`

### getRenderingHints

    public java.awt.RenderingHints getRenderingHints()

  Specified by:
    `getRenderingHints` in interface `java.awt.image.BufferedImageOp`

### getPixels

    protected int[] getPixels(java.awt.image.BufferedImage img,
                              int x,
                              int y,
                              int w,
                              int h,
                              int[] pixels)

### setPixels

    protected void setPixels(java.awt.image.BufferedImage img,
                             int x,
                             int y,
                             int w,
                             int h,
                             int[] pixels)

  Writes a rectangular area of pixels in the destination `BufferedImage`. Calling this method on an image of type different from `BufferedImage.TYPE_INT_ARGB` and `BufferedImage.TYPE_INT_RGB` will unmanage the image.

  Parameters:
    `img` - the destination image
    `x` - the x location at which to start storing pixels
    `y` - the y location at which to start storing pixels
    `w` - the width of the rectangle of pixels to store
    `h` - the height of the rectangle of pixels to store
    `pixels` - an array of pixels, stored as integers
  Throws:
    `java.lang.IllegalArgumentException` - is `pixels` is non-null and of length < w*h

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