Java图片倒影效果实例源码.zip

import java.applet.Applet; import java.awt.*; import java.net.MalformedURLException; import java.net.URL; //图片倒影 //Download by http://www.codefans.net public class ReflectionApplet extends Applet implements Runnable { Thread lakeThread; //图片倒影线程 Graphics graphics; //该Applet的Graphics对象 Graphics waveGraphics; //倒影的Graphics对象 Image image; //Applet的Image对象 Image waveImage; //倒影的Graphics对象 int currentImage,imageWidth,imageHeight; boolean imageLoaded; //图片是否装载 String imageName; //图片名称 public void init() { imageName= getParameter("image"); //得到图片名称 } public void start() { if (lakeThread == null) { lakeThread= new Thread(this); //实例化线程 lakeThread.start(); //运行线程 } } public void run() { currentImage= 0; if (!imageLoaded) { //如果图片未装载 repaint(); //得绘屏幕 graphics= getGraphics(); //得到Graphics对象 MediaTracker mediatracker= new MediaTracker(this); //实例化MediaTracker对象 image= getImage(getDocumentBase(), imageName); //得到Image实例 mediatracker.addImage(image, 0); //增加待加载的图片 try { mediatracker.waitForAll(); //装载图片 imageLoaded= !mediatracker.isErrorAny(); //是否有错误发生 } catch (InterruptedException ex) { } if (!imageLoaded) { //加载图片失败 stop(); //Applet停止运行 graphics.drawString("加载图片错误", 10, 40); //输出错误信息 return; } imageWidth= image.getWidth(this); //得到图像宽度 imageHeight= image.getHeight(this); //得到图像高度 createAnimation(); //创建动画效果 } repaint(); //重绘屏幕 try { while (true) { repaint(); //得绘屏幕 currentImage++; if (currentImage == 12) currentImage= 0; Thread.sleep(50); //线程休眠 } } catch (InterruptedException ex) { stop(); } } public void createAnimation() { Image img= createImage(imageWidth, imageHeight); //以图像高度创建Image实例 Graphics g= img.getGraphics(); //得到Image对象的Graphics对象 g.drawImage(image, 0, 0, this); //绘制Image for (int i= 0; i < imageHeight ; i++) { g.copyArea(0,imageHeight-1-i,imageWidth,1,0,-imageHeight+1+(i*2)); //拷贝图像区域 } waveImage= createImage(13 * imageWidth, imageHeight); //得到波浪效果的Image实例 waveGraphics= waveImage.getGraphics(); //得到波浪效果的Graphics实例 waveGraphics.drawImage(img, 12 * imageWidth, 0, this); //绘制图像 int j= 0; while (j<12){ makeWaves(waveGraphics, j); j++; } g.drawImage(image, 0, 0, this); //绘制图像 } public void makeWaves(Graphics g, int i) { //波浪效果模拟 double d= (6.2831853071795862 * i) / 12; int j= (12 - i) * imageWidth; int waveHeight=imageHeight / 16; for (int l= 0; l < imageHeight; l++) { int k=(int) ((waveHeight* (l + 28)* Math.sin(waveHeight * (imageHeight - l)/ (l + 1)+ d))/imageHeight); if (l < -k) g.copyArea(12 * imageWidth, l, imageWidth, 1, -j, 0); //拷贝图像区域,形成波浪 else g.copyArea(12 * imageWidth, l + k, imageWidth, 1, -j, -k); } } public void paint(Graphics g) { update(g); } public void update(Graphics g){ if (waveImage != null) { g.drawImage(waveImage,-currentImage * imageWidth,imageHeight-1, this); //绘制图像 g.drawImage(waveImage,(12 - currentImage) * imageWidth, imageHeight-1,this); } g.drawImage(image, 0, 1, this); } }