Your Web Site Creator/Your Web Site Creator.iso/WebSite/data1.cab/Program_Executable_Files/Classes/WACANVA2.CLA

Java Class File | 1999-01-13 | 3.6 KB | 164 lines

import java.applet.Applet;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.ImageObserver;

class WaveCanvas2 extends Canvas implements Runnable {
   Thread theThread;
   double[] sinValues;
   double angleIncrement;
   int waveCount;
   Image osImage;
   Graphics osg;
   int sineIndex;
   Color bkColor;
   Image bkImage;
   Color waveColor;
   int movementIncrement;
   int sleepTime;
   boolean moveWest;
   boolean moveEast;

   public void update(Graphics var1) {
      if (this.osImage == null) {
         this.osImage = ((Component)this).createImage(((Component)this).size().width, ((Component)this).size().height);
         this.osg = this.osImage.getGraphics();
      }

      this.osg.setColor(((Component)this).getBackground());
      this.osg.fillRect(0, 0, ((Component)this).size().width, ((Component)this).size().height);
      if (this.bkImage != null) {
         int var2 = this.bkImage.getWidth(this);
         int var3 = this.bkImage.getHeight(this);
         int var4 = ((Component)this).size().width / var2;
         int var5 = ((Component)this).size().height / var3;
         ++var4;
         ++var5;

         for(int var6 = 0; var6 < var5; ++var6) {
            for(int var7 = 0; var7 < var4; ++var7) {
               this.osg.drawImage(this.bkImage, var7 * var2, var6 * var3, this);
            }
         }
      }

      this.osg.setColor(this.waveColor);
      int var8 = 0;
      int var9 = ((Component)this).size().height / 2 + (int)(this.sinValues[this.sineIndex] * (double)(((Component)this).size().height / 2));
      int var11 = var9;
      int var13 = 0;
      int var14 = 0;
      int var16 = this.sineIndex;

      while(var13 < ((Component)this).size().width) {
         var13 = var8 + 1;
         var14 = (int)(this.sinValues[var16] * (double)(((Component)this).size().height / 2) + (double)(((Component)this).size().height / 2));
         this.osg.drawLine(var8, var11, var13, var14);
         var8 = var13;
         var11 = var14;
         ++var16;
         if (var16 >= this.sinValues.length) {
            var16 = 0;
         }
      }

      var1.drawImage(this.osImage, 0, 0, (ImageObserver)null);
   }

   public WaveCanvas2(Applet var1, int var2) {
      this.GetParameters(var1, var2);
   }

   void GetParameters(Applet var1, int var2) {
      String var3 = var1.getParameter("waveBkColor" + var2);
      this.bkColor = AppletParam2.GetColor(var3, (Color)null);
      if (this.bkColor != null) {
         ((Component)this).setBackground(this.bkColor);
      }

      var3 = var1.getParameter("waveBkImage" + var2);
      this.bkImage = var1.getImage(var1.getCodeBase(), var3);
      var3 = var1.getParameter("waveColor" + var2);
      this.waveColor = AppletParam2.GetColor(var3, Color.black);
      var3 = var1.getParameter("waveIncrement" + var2);
      this.movementIncrement = AppletParam2.GetInt(var3, 2);
      var3 = var1.getParameter("waveCount" + var2);
      this.waveCount = AppletParam2.GetInt(var3, 1);
      var3 = var1.getParameter("waveSpeed" + var2);
      this.sleepTime = AppletParam2.GetInt(var3, 125);
      var3 = var1.getParameter("waveMoveDirection" + var2);
      String var4 = AppletParam2.GetString(var3, "West");
      if (var4.compareTo("West") == 0) {
         this.moveWest = true;
         this.moveEast = false;
      } else {
         this.moveWest = false;
         this.moveEast = true;
      }
   }

   public void Start() {
      this.theThread = new Thread(this);
      this.theThread.start();
   }

   public void Stop() {
      this.theThread.stop();
      this.theThread = null;
   }

   public void run() {
      try {
         while(true) {
            ((Component)this).repaint();
            Thread.sleep((long)this.sleepTime);
            if (this.moveWest) {
               this.sineIndex += this.movementIncrement;
               if (this.sineIndex >= this.sinValues.length) {
                  this.sineIndex = 0;
               }
            } else {
               this.sineIndex -= this.movementIncrement;
               if (this.sineIndex <= 0) {
                  this.sineIndex = this.sinValues.length - 1;
               }
            }
         }
      } catch (InterruptedException var1) {
      }
   }

   public synchronized void reshape(int var1, int var2, int var3, int var4) {
      this.angleIncrement = (Math.PI * 2D) / ((double)var3 / (double)this.waveCount);
      int var5 = var3 / this.waveCount;
      this.sinValues = new double[var5];
      double var6 = (double)0.0F;

      for(int var8 = 0; var8 < var5; ++var8) {
         this.sinValues[var8] = Math.sin(var6);
         var6 += this.angleIncrement;
      }

      this.osImage = null;
      if (this.moveWest) {
         this.sineIndex = 0;
      } else {
         this.sineIndex = this.sinValues.length - 1;
      }

      super.reshape(var1, var2, var3, var4);
   }

   public Dimension minimumSize() {
      return new Dimension(10, 10);
   }

   public Dimension preferredSize() {
      return new Dimension(10, 10);
   }
}