基于Java的实例源码-绘制图片火焰效果.zip

import java.applet.*; import java.awt.*; import java.net.*; //图片火焰效果 //Download by http://www.codefans.net public class FirePicApplet extends Applet implements Runnable{ private Image backImage,foreImage; //前景和背景Image对象 private Image image,fireImage; //Applet和绘制火焰的效果的Image对象 private Graphics graphics,fireGraphics; //Applet和绘制火焰的效果的Graphics对象 private Thread thread; //火焰效果的线程 private MediaTracker imageTracker; //装载图片 private int height,width; //Applet的高度,宽度 public void init() { Dimension dim=getSize(); //得到Applet的尺寸 width = dim.width; //得到宽度值 height = dim.height; //得到高度值 backImage = getImage(getDocumentBase(),"back.jpg"); //得到图片 foreImage = getImage(getDocumentBase(),"image1.gif"); imageTracker = new MediaTracker(this); //实例化MediaTracker对象 imageTracker.addImage(backImage,0); //增加图片到图片装载器 imageTracker.addImage(foreImage,0); try{ imageTracker.waitForID(0); //装载图片 } catch(InterruptedException e){} image = createImage(width,height); //得到Image对象实例 graphics = image.getGraphics(); //得到Graphics对象实例 fireImage=createImage(width*2,height*2); fireGraphics=fireImage.getGraphics(); } public void start(){ if(thread == null){ thread = new Thread(this); //实例化线程 thread.start(); //运行线程 } } public void run(){ int x= 0, y=0; //绘制火焰效果的X坐标,Y坐标 int tileWidth = backImage.getWidth(this); //背景图片的宽度 int tileHeight= backImage.getHeight(this); //背景图片的高度 while(thread != null) { x=fireImage.getWidth(this)-width; //得到X坐标,Y坐标值 y=fireImage.getHeight(this)-height; for(;(x>0)&&(y>0); x--,y--) { if((x==0)||(y==0)) { //坐标回到零时,重新设置 x=fireImage.getWidth(this)-width; y=fireImage.getHeight(this)-height; } for(int j=0; j < fireImage.getHeight(this); j = j + tileHeight){ for(int i=0; i < fireImage.getWidth(this); i = i + tileWidth){ fireGraphics.drawImage(backImage, i, j, this); //绘制背景图片 } } fireGraphics.drawImage(foreImage, x, y,width,height,this); //绘制前景图片 graphics.drawImage(fireImage,-x,-y,this); //绘制火焰效果Image repaint(); //重绘屏幕 } } } public void update(Graphics g){ paint(g); } public void paint(Graphics g){ g.drawImage(image,0,0,this); //绘制Image } }