Package com.jhlabs.image

Class VariableBlurFilter

  • All Implemented Interfaces:
    java.awt.image.BufferedImageOp, java.lang.Cloneable
    public class VariableBlurFilter
extends AbstractBufferedImageOp
    A filter which performs a box blur with a different blur radius at each pixel. The radius can either be specified by providing a blur mask image or by overriding the blurRadiusAt method.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void blur​(int[] in, int[] out, int width, int height, int radius, int pass)  
      protected float blurRadiusAt​(int x, int y, int width, int height)
      Override this to get a different blur radius at eahc point.
      java.awt.image.BufferedImage createCompatibleDestImage​(java.awt.image.BufferedImage src, java.awt.image.ColorModel dstCM)  
      java.awt.image.BufferedImage filter​(java.awt.image.BufferedImage src, java.awt.image.BufferedImage dst)  
      java.awt.image.BufferedImage getBlurMask()
      Get the mask used to give the amount of blur at each point.
      java.awt.geom.Rectangle2D getBounds2D​(java.awt.image.BufferedImage src)  
      int getHRadius()
      Get the horizontal size of the blur.
      int getIterations()
      Get the number of iterations the blur is performed.
      java.awt.geom.Point2D getPoint2D​(java.awt.geom.Point2D srcPt, java.awt.geom.Point2D dstPt)  
      boolean getPremultiplyAlpha()
      Get whether to premultiply the alpha channel.
      int getRadius()
      Get the radius of the effect.
      java.awt.RenderingHints getRenderingHints()  
      int getVRadius()
      Get the vertical size of the blur.
      void setBlurMask​(java.awt.image.BufferedImage blurMask)
      Set the mask used to give the amount of blur at each point.
      void setHRadius​(int hRadius)
      Set the horizontal size of the blur.
      void setIterations​(int iterations)
      Set the number of iterations the blur is performed.
      void setPremultiplyAlpha​(boolean premultiplyAlpha)
      Set whether to premultiply the alpha channel.
      void setRadius​(int radius)
      Set the radius of the effect.
      void setVRadius​(int vRadius)
      Set the vertical size of the blur.
      java.lang.String toString()  

      • Methods inherited from class java.lang.Object

        equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Constructor Detail

      • VariableBlurFilter

        public VariableBlurFilter()

    • Method Detail

      • setPremultiplyAlpha

        public void setPremultiplyAlpha​(boolean premultiplyAlpha)
        Set whether to premultiply the alpha channel.
        Parameters:
        premultiplyAlpha - true to premultiply the alpha
        See Also:
        getPremultiplyAlpha()

      • getPremultiplyAlpha

        public boolean getPremultiplyAlpha()
        Get whether to premultiply the alpha channel.
        Returns:
        true to premultiply the alpha
        See Also:
        setPremultiplyAlpha(boolean)

      • filter

        public java.awt.image.BufferedImage filter​(java.awt.image.BufferedImage src,
                                           java.awt.image.BufferedImage dst)

      • createCompatibleDestImage

        public java.awt.image.BufferedImage createCompatibleDestImage​(java.awt.image.BufferedImage src,
                                                              java.awt.image.ColorModel dstCM)
        Specified by:
        createCompatibleDestImage in interface java.awt.image.BufferedImageOp
        Overrides:
        createCompatibleDestImage in class AbstractBufferedImageOp

      • getBounds2D

        public java.awt.geom.Rectangle2D getBounds2D​(java.awt.image.BufferedImage src)
        Specified by:
        getBounds2D in interface java.awt.image.BufferedImageOp
        Overrides:
        getBounds2D in class AbstractBufferedImageOp

      • 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
        Overrides:
        getPoint2D in class AbstractBufferedImageOp

      • getRenderingHints

        public java.awt.RenderingHints getRenderingHints()
        Specified by:
        getRenderingHints in interface java.awt.image.BufferedImageOp
        Overrides:
        getRenderingHints in class AbstractBufferedImageOp

      • blur

        public void blur​(int[] in,
                 int[] out,
                 int width,
                 int height,
                 int radius,
                 int pass)

      • blurRadiusAt

        protected float blurRadiusAt​(int x,
                             int y,
                             int width,
                             int height)
        Override this to get a different blur radius at eahc point.
        Parameters:
        x - the x coordinate
        y - the y coordinate
        width - the width of the image
        height - the height of the image
        Returns:
        the blur radius

      • setHRadius

        public void setHRadius​(int hRadius)
        Set the horizontal size of the blur.
        Parameters:
        hRadius - the radius of the blur in the horizontal direction. Minimum value: 0
        See Also:
        getHRadius()

      • getHRadius

        public int getHRadius()
        Get the horizontal size of the blur.
        Returns:
        the radius of the blur in the horizontal direction
        See Also:
        setHRadius(int)

      • setVRadius

        public void setVRadius​(int vRadius)
        Set the vertical size of the blur.
        Parameters:
        vRadius - the radius of the blur in the vertical direction. Minimum value: 0.
        See Also:
        getVRadius()

      • getVRadius

        public int getVRadius()
        Get the vertical size of the blur.
        Returns:
        the radius of the blur in the vertical direction
        See Also:
        setVRadius(int)

      • setRadius

        public void setRadius​(int radius)
        Set the radius of the effect.
        Parameters:
        radius - the radius. Minimum value: 0
        See Also:
        getRadius()

      • getRadius

        public int getRadius()
        Get the radius of the effect.
        Returns:
        the radius
        See Also:
        setRadius(int)

      • setIterations

        public void setIterations​(int iterations)
        Set the number of iterations the blur is performed.
        Parameters:
        iterations - the number of iterations. Minimum value: 0
        See Also:
        getIterations()

      • getIterations

        public int getIterations()
        Get the number of iterations the blur is performed.
        Returns:
        the number of iterations
        See Also:
        setIterations(int)

      • setBlurMask

        public void setBlurMask​(java.awt.image.BufferedImage blurMask)
        Set the mask used to give the amount of blur at each point.
        Parameters:
        blurMask - the mask
        See Also:
        getBlurMask()

      • getBlurMask

        public java.awt.image.BufferedImage getBlurMask()
        Get the mask used to give the amount of blur at each point.
        Returns:
        the mask
        See Also:
        setBlurMask(BufferedImage)

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object