java图像进行缩放的类，java图像缩放,java图像进行缩放的类

java图像进行缩放的类，java图像缩放,java图像进行缩放的类

java图像进行缩放的类

MyScaleFilter.java

package cn.outofmemory;import java.awt.Graphics2D;import java.awt.Image;import java.awt.image.BufferedImage;import java.awt.image.ColorModel;import com.jhlabs.image.AbstractBufferedImageOp;/** * Scales an image using the area-averaging algorithm, which can't be done with AffineTransformOp. */public class MyScaleFilter extends AbstractBufferedImageOp {    private int width;    private int height;    /**     * Construct a ScaleFilter.     */    public MyScaleFilter() {        this(32, 32);    }    /**     * Construct a ScaleFilter.     * @param width the width to scale to     * @param height the height to scale to     */    public MyScaleFilter( int width, int height ) {        this.width = width;        this.height = height;    }    public BufferedImage filter( BufferedImage src, BufferedImage dst ) {        if ( dst == null ) {            ColorModel dstCM = src.getColorModel();            dst = new BufferedImage(dstCM,                 dstCM.createCompatibleWritableRaster( width, height ),                 dstCM.isAlphaPremultiplied(), null);        }        Image scaleImage = src.getScaledInstance( width, height, Image.SCALE_SMOOTH );        Graphics2D g = dst.createGraphics();        g.drawImage( scaleImage, 0, 0, width, height, null );        g.dispose();        return dst;    }    public String toString() {        return "Distort/Scale";    }}