Package com.tagtraum.core.image

Class ImageScaler

java.lang.Object

com.tagtraum.core.image.ImageScaler

public final class ImageScaler
extends Object

Allows to scale images efficiently and with high quality.

Method Summary

Modifier and Type	Method	Description
static BufferedImage	scale(BufferedImage sourceImage, int targetWidth, int targetHeight, Object hint, boolean progressiveBilinear)	Convenience method that returns a scaled instance of the provided BufferedImage.
static BufferedImage	scale(Image sourceImage, int targetWidth, int targetHeight)	Convenience method that returns a scaled instance of the provided image.

Methods inherited from class java.lang.Object

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

Method Detail

scale

public static BufferedImage scale(Image sourceImage,
                                  int targetWidth,
                                  int targetHeight)

Convenience method that returns a scaled instance of the provided image. Uses a multi-step approach for best results.

Parameters:

sourceImage - the original image to be scaled

targetWidth - the desired width of the scaled instance, in pixels

targetHeight - the desired height of the scaled instance, in pixels

Returns:

a scaled version of the original image

scale

public static BufferedImage scale(BufferedImage sourceImage,
                                  int targetWidth,
                                  int targetHeight,
                                  Object hint,
                                  boolean progressiveBilinear)

Convenience method that returns a scaled instance of the provided BufferedImage.

Parameters:

sourceImage - the original image to be scaled

targetWidth - the desired width of the scaled instance, in pixels

targetHeight - the desired height of the scaled instance, in pixels

hint - one of the rendering hints that corresponds to RenderingHints.KEY_INTERPOLATION (e.g. RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR, RenderingHints.VALUE_INTERPOLATION_BILINEAR, RenderingHints.VALUE_INTERPOLATION_BICUBIC)

progressiveBilinear - if true, this method will use a multi-step scaling technique that provides higher quality than the usual one-step technique (only useful in down-scaling cases, where targetWidth or targetHeight is smaller than the original dimensions)

Returns:

a scaled version of the original BufferedImage