Package com.jhlabs.math

Class ImageFunction2D

  • All Implemented Interfaces:
    Function2D
    public class ImageFunction2D
extends java.lang.Object
implements Function2D

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected boolean alpha  
      static int CLAMP  
      protected int edgeAction  
      protected int height  
      protected int[] pixels  
      protected int width  
      static int WRAP  
      static int ZERO  

    • Constructor Summary

      Constructors 
      Constructor Description
      ImageFunction2D​(int[] pixels, int width, int height, int edgeAction, boolean alpha)  
      ImageFunction2D​(java.awt.Image image)  
      ImageFunction2D​(java.awt.image.BufferedImage image)  
      ImageFunction2D​(java.awt.image.BufferedImage image, boolean alpha)  
      ImageFunction2D​(java.awt.image.BufferedImage image, int edgeAction, boolean alpha)  
      ImageFunction2D​(java.awt.Image image, int edgeAction, boolean alpha)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      float evaluate​(float x, float y)
      Evaluate the pixel and the x and y values according to the edge action.
      int getEdgeAction()
      Get the edgeAction.
      int getHeight()
      Get the height.
      int[] getPixels()
      Get the pixels.
      int[] getRGB​(java.awt.image.BufferedImage image, int x, int y, int width, int height, int[] pixels)
      A convenience method for getting ARGB pixels from an image.
      int getWidth()
      Get the width.
      void init​(int[] pixels, int width, int height, int edgeAction, boolean alpha)
      Initialize an image.
      void setEdgeAction​(int edgeAction)
      Set the edgeAction.

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • pixels

        protected int[] pixels

      • width

        protected int width

      • height

        protected int height

      • edgeAction

        protected int edgeAction

      • alpha

        protected boolean alpha

    • Constructor Detail

      • ImageFunction2D

        public ImageFunction2D​(java.awt.image.BufferedImage image)

      • ImageFunction2D

        public ImageFunction2D​(java.awt.image.BufferedImage image,
                       boolean alpha)

      • ImageFunction2D

        public ImageFunction2D​(java.awt.image.BufferedImage image,
                       int edgeAction,
                       boolean alpha)

      • ImageFunction2D

        public ImageFunction2D​(int[] pixels,
                       int width,
                       int height,
                       int edgeAction,
                       boolean alpha)

      • ImageFunction2D

        public ImageFunction2D​(java.awt.Image image)

      • ImageFunction2D

        public ImageFunction2D​(java.awt.Image image,
                       int edgeAction,
                       boolean alpha)

    • Method Detail

      • getRGB

        public int[] getRGB​(java.awt.image.BufferedImage image,
                    int x,
                    int y,
                    int width,
                    int height,
                    int[] pixels)
        A convenience method for getting ARGB pixels from an image. This tries to avoid the performance penalty of BufferedImage.getRGB unmanaging the image.
        Parameters:
        image - The image
        x - The x value of the pixel in one of the corners
        y - The y value of the pixel in one of the corners
        width - The width of the pixels to get
        height - The height of the pixels to get
        pixels - The image
        Returns:
        The subimage

      • init

        public void init​(int[] pixels,
                 int width,
                 int height,
                 int edgeAction,
                 boolean alpha)
        Initialize an image.
        Parameters:
        pixels - The image
        width - The width of the pixels to get
        height - The height of the pixels to get
        edgeAction - The edgeAction, one of ZERO, CLAMP or WRAP.
        alpha - The alpha

      • evaluate

        public float evaluate​(float x,
                      float y)
        Evaluate the pixel and the x and y values according to the edge action.
        Specified by:
        evaluate in interface Function2D
        Parameters:
        x - The x value
        y - The y value
        Returns:
        The value

      • setEdgeAction

        public void setEdgeAction​(int edgeAction)
        Set the edgeAction.
        Parameters:
        edgeAction - one of ZERO, CLAMP or WRAP.
        See Also:
        getEdgeAction()

      • getEdgeAction

        public int getEdgeAction()
        Get the edgeAction.
        Returns:
        The edgeAction, one of ZERO, CLAMP or WRAP.
        See Also:
        setEdgeAction(int)

      • getWidth

        public int getWidth()
        Get the width.
        Returns:
        The width

      • getHeight

        public int getHeight()
        Get the height.
        Returns:
        the height

      • getPixels

        public int[] getPixels()
        Get the pixels.
        Returns:
        the pixels.