Package snap.swing

Class AWTImageUtils

java.lang.Object

snap.swing.AWTImageUtils

public class AWTImageUtils
extends Object

Utility methods for AWT Images.

Constructor Summary

Constructors

Constructor	Description
AWTImageUtils()

Method Summary

Modifier and Type	Method	Description
static void	convolve(int[] srcPix, int[] destPix, int srcW, int srcH, float[] kern, int kernW)	Convolves given source image into dest image.
static void	emboss(int[] srcPix, int[] bumpPix, int srcW, int srcH, int radius, double azimuth, double altitude)	Emboss a source image according to a bump map, both in ARGB integer array form.
static BufferedImage	getBufferedImage(int aWidth, int aHeight, boolean withAlpha)	Returns a compatible buffered image for width and height with given transparency.
static BufferedImage	getBufferedImage(Image anImage)	Returns a buffered image for an AWT image with transparency.
static BufferedImage	getBufferedImage(Image anImage, boolean withAlpha)	Returns a buffered image for an AWT image.
static byte[]	getBytesJPEG(Image anImage)	Returns a JPeg byte array for the given buffered image.
static byte[]	getBytesPNG(Image anImage)	Returns a PNG byte array for the given buffered image.
static float[]	getGaussianKernel(int rx, int ry)	Returns kernel for a Gaussian blur convolve.

Methods inherited from class java.lang.Object

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

Constructor Details

AWTImageUtils

public AWTImageUtils()

Method Details

getBytesJPEG

public static byte[] getBytesJPEG(Image anImage)

Returns a JPeg byte array for the given buffered image.

getBytesPNG

public static byte[] getBytesPNG(Image anImage)

Returns a PNG byte array for the given buffered image.

getBufferedImage

public static BufferedImage getBufferedImage(Image anImage)

Returns a buffered image for an AWT image with transparency.

getBufferedImage

public static BufferedImage getBufferedImage(Image anImage,
 boolean withAlpha)

Returns a buffered image for an AWT image.

getBufferedImage

public static BufferedImage getBufferedImage(int aWidth,
 int aHeight,
 boolean withAlpha)

Returns a compatible buffered image for width and height with given transparency.

emboss

public static void emboss(int[] srcPix,
 int[] bumpPix,
 int srcW,
 int srcH,
 int radius,
 double azimuth,
 double altitude)

Emboss a source image according to a bump map, both in ARGB integer array form. Bump map is assumed to to be (2*radius x 2*radius) pixels larger than the source to compensate for edge conditions of both the blur and the emboss convolutions. Code adapted from Graphics Gems IV - Fast Embossing Effects on Raster Image Data (by John Schlag)

convolve

public static void convolve(int[] srcPix,
 int[] destPix,
 int srcW,
 int srcH,
 float[] kern,
 int kernW)

Convolves given source image into dest image.

getGaussianKernel

public static float[] getGaussianKernel(int rx,
 int ry)

Returns kernel for a Gaussian blur convolve.