Java修改PNG(背景透明)图片，java修改png背景,偶得一套PNG的Hero

Java修改PNG(背景透明)图片，java修改png背景,偶得一套PNG的Hero

偶得一套PNG的Hero行走动画(感谢原作者)，非常精细，骨头甚至喜欢，但是原图（hero.png）空白太多，放在手机里有点浪费。又不想麻烦美工，于是想自己用代码修改下

TestPNG.java

import javax.imageio.ImageIO;import java.io.File;import java.io.IOException;import java.awt.image.BufferedImage;import java.awt.Image;import java.awt.Graphics2D;import java.awt.Transparency; public class TestPNG{    /**       * resizePNG:Resize the PNG file.       *        * @author lazybone,2010.08.16       *        * @param fromFile       * @param fromW       * @param fromH       * @param toFile       * @param toW       * @param toH       */      public static void resizePNG(String fromFile, int fromW, int fromH, String toFile, int toW, int toH) {           try {               BufferedImage to = new BufferedImage(toW, toH,                       BufferedImage.TYPE_INT_RGB);               Graphics2D g2d = to.createGraphics();               to = g2d.getDeviceConfiguration().createCompatibleImage(toW, toH,                       Transparency.TRANSLUCENT);               g2d.dispose();               g2d = to.createGraphics();               File f2 = new File(fromFile);               BufferedImage bi2 = ImageIO.read(f2);               Image from = bi2.getScaledInstance(fromW, fromH, bi2.SCALE_DEFAULT);               int a = 128;               int b = 128;               int tileCount = 8;               int offset = 50;               for (int i = 0; i < tileCount; i++)                   for (int j = 0; j < tileCount; j++) {                       g2d.drawImage(from, i * a - i * offset - offset / 2, j * a                               - j * offset - offset / 2, i * a + a - i * offset                               - offset / 2, j * a + a - j * offset - offset / 2,                               i * b, j * b, i * b + b, j * b + b, null);                   }               g2d.dispose();               ImageIO.write(to, "png", new File(toFile));           } catch (IOException e) {               e.printStackTrace();           }       }       public static void main(String[] args) throws IOException {           System.out.println("Start");           int toSize = 624;           int fromSize = 1024;           resizePNG("d:\\hero.png", fromSize, fromSize, "d:\\hero_ok.png",                   toSize, toSize);           System.out.println("OK");       }}