cutimage.java

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import java.awt.Image;
import java.awt.MediaTracker;
import java.awt.Toolkit;
import java.awt.image.CropImageFilter;
import java.awt.image.FilteredImageSource;
import java.awt.image.ImageProducer;
import java.net.MalformedURLException;
import java.net.URL;

import javax.swing.JFrame;


public class CutImage extends JFrame 
{
	private Image mainImage;
	private Image[] wolfImage;
	private Image[] ballImage;
	private Image[] pigImage;
	private MediaTracker mt = new MediaTracker(this);
	
	public CutImage()
	{
		mainImage = Toolkit.getDefaultToolkit().getImage(this.getImageURL("background.jpg"));
		wolfImage = this.loadImageStrip(this.getImageURL("wolf.gif"), 14, 125, 125, 0);
		ballImage = this.loadImageStrip(this.getImageURL("ball.gif"), 5, 116, 92, 0);
		
		for(int i=0; i < ballImage.length;i++)
		{
			mt.addImage(ballImage[i], 0);
		}
		for(int i=0; i < wolfImage.length;i++)
		{
			mt.addImage(wolfImage[i], 0);
		}
		mt.addImage(mainImage, 0);
		
		try {
			mt.waitForAll();
		} catch (InterruptedException e) {
			// TODO 自动生成 catch 块
			e.printStackTrace();
		}
	}
	
	public Image getMainImage()
	{
		return mainImage;
	}
	
	public Image[] getWolfImage()
	{
		return wolfImage;
	}
	
	public Image[] getBallImage()
	{
		return ballImage;
	}
	
	public URL getImageURL(String imgName)
	{
		String imageURLStr = CutImage.class.getResource("/").toString();
		imageURLStr = imageURLStr.substring(0, imageURLStr.length() - 4) + "img/" + imgName;
		
		URL imageURL = null;
		
		try {
			imageURL = new URL(imageURLStr);
		} catch (MalformedURLException e) {
			// TODO 自动生成 catch 块
			e.printStackTrace();
		}
		System.out.println(imageURLStr);
		return imageURL;
		
	}
	
	/**分割图片*/
	public Image[] loadImageStrip(URL fileURL, int numImages, int cellWidth, int cellHeight, int cellBorder) {
		Image img = Toolkit.getDefaultToolkit().getImage(fileURL);
		mt.addImage(img, 0);
		
		try {
			mt.waitForAll();
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
		
		int colums = img.getWidth(null)/cellWidth;
		Image[] imges = new Image[numImages];
		ImageProducer iP = img.getSource();
		
		for(int i=0;i<numImages;i++){
			int tempX=(i%colums)*cellWidth+cellBorder;
			int tempY=(i/colums)*cellHeight+cellBorder;
			int width=cellWidth-2*cellBorder;
			int height=cellHeight-2*cellBorder;
			imges[i]=this.loadCell(iP, tempX, tempY, width, height);		
		}
		return imges;		
		
	}
	
	/**为原图像的新过滤版本产生图像数据*/
	public Image loadCell(ImageProducer ip,int x,int y,int width,int height){
		
		CropImageFilter cf = new CropImageFilter(x,y,width,height);
		
		FilteredImageSource fis = new FilteredImageSource(ip,cf);
		
		return createImage(fis);
	}

	
//	public static void main(String[] args)
//	{
//		new CutImage().getImageURL("background.jpg");
//	}
}