[游戏开发]JAVA实现图片缩放反转

1.图片处理工具类

import java.awt.image.BufferedImage;

public class ImageZoom{
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	
	private ImageZoom()
	{}
	
	//图片按比例缩放
	public static BufferedImage createZoomImage(BufferedImage image,float zoom)
	{
		return createZoomImage(image,zoom,zoom);
	}
	//图片不按比例缩放
	public static BufferedImage createZoomImage(BufferedImage image,float xZoom,float yZoom)
	{
		BufferedImage createImage=null;
		if(image!=null)
		{
			int width=0;
			int height=0;
			int forX=0;
			int forY=0;
			int tempZoomStartX=0;
			int tempZoomStartY=0;
			int tempZoomEndX=0;
			int tempZoomEndY=0;
			int rgb=0;
			int imageRGB[] = null;
			int imageChangeRGB[] = null;
			
			width=(int)(image.getWidth()*xZoom);
			height=(int)(image.getHeight()*yZoom);
			forX=image.getWidth();
			forY=image.getHeight();
			
			imageChangeRGB=new int[height*width];
			imageRGB=new int[forX*forY];
			image.getRGB(0, 0, forX, forY, imageRGB, 0, forX);
			
			createImage=new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);
			
			for(int y=0;y<forY;y++)
			{
				for(int x=0;x<forX;x++)
				{
					tempZoomStartX=(int)(x*xZoom);
					tempZoomStartY=(int)(y*yZoom);
					tempZoomEndX=(int)((x+1)*xZoom);
					tempZoomEndY=(int)((y+1)*yZoom);
					
					rgb=imageRGB[y*forX+x];
					for(int yy=tempZoomStartY;yy<tempZoomEndY;yy++)
					{
						for(int xx=tempZoomStartX;xx<tempZoomEndX;xx++)
						{
							imageChangeRGB[yy*width+xx]=rgb;
						}
					}
				}
			}
			createImage.setRGB(0, 0, width, height, imageChangeRGB, 0, width);
			
			imageRGB=null;
			imageChangeRGB=null;
		
		}
		return createImage;
	}
	//图片反色处理
	public static BufferedImage inverse(BufferedImage image)
	{
		BufferedImage createImage=null;
		if(image!=null)
		{
			int width=0;
			int height=0;
			width=image.getWidth();
			height=image.getHeight();
			int imageRGB[]=new int[width*height];
			image.getRGB(0, 0, width, height, imageRGB, 0, width);
			createImage=new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);
			for(int i=0;i<imageRGB.length;i++)
			{
				imageRGB[i]=imageRGB[i]^0xffffffff;
			}
			createImage.setRGB(0, 0, width, height, imageRGB, 0, width);
			imageRGB=null;
		}
		return createImage;
	}
}

2.test

import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Date;

import javax.imageio.ImageIO;
import javax.swing.JFrame;


public class test extends JFrame{
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	BufferedImage image2=null;
	public test()
	{
		File file=new File("d:/2.jpg");
		File file2=new File("d:/2-1.jpg");
		Date d;
		long startTime;
		long endTime;
		float xZoom=20f;
		float yZoom=20f;
		try {
			BufferedImage image=ImageIO.read(file);
			
			//获取缩放并且反色后的图片
			d=new Date();
			startTime=d.getTime();
			//图片反色后再按比例缩放
			image2=ImageZoom.createZoomImage(ImageZoom.inverse(image),xZoom,yZoom);
			d=new Date();
			endTime=d.getTime();
			System.out.println("使用时间:"+(endTime-startTime)+"毫秒");
			ImageIO.write(image2, "JPEG", file2);//保存转换后的图片
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		this.repaint();
		this.setBounds(0,0,600,500);
		this.setDefaultCloseOperation(3);
		this.setVisible(true);
	}
	public void paint(Graphics g){
		g.drawImage(image2, 0, 30, this);
	}
	public static void main(String[] arg)
	{
		new test();
	}
}

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