Your Web Site Creator/Your Web Site Creator.iso/WebSite/data1.cab/Program_Executable_Files/Classes/FIRECAN2.CLA

Java Class File | 1999-01-13 | 4.2 KB | 182 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.util.Random;

public class FireworksCanvas2 extends Canvas implements Runnable {
   Thread appThread;
   Image osImage;
   Graphics osg;
   Color bkColor;
   Image bkImage;
   int rocketCount;
   Random randomizer;
   double[] radius;
   int[] centerX;
   int[] centerY;
   double[] currRadius;
   int newX;
   int newY;
   Color[] colors;
   int[] colorIndex;
   double[] cosines;
   double[] sines;

   public FireworksCanvas2(Applet var1, int var2) {
      this.GetParameters(var1, var2);
      this.randomizer = new Random(System.currentTimeMillis());
      this.colors = new Color[13];
      this.colors[0] = Color.black;
      this.colors[1] = Color.blue;
      this.colors[2] = Color.cyan;
      this.colors[3] = Color.darkGray;
      this.colors[4] = Color.gray;
      this.colors[5] = Color.green;
      this.colors[6] = Color.lightGray;
      this.colors[7] = Color.magenta;
      this.colors[8] = Color.orange;
      this.colors[9] = Color.pink;
      this.colors[10] = Color.red;
      this.colors[11] = Color.white;
      this.colors[12] = Color.yellow;
   }

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

      var3 = var1.getParameter("fireworksBkImage" + var2);
      this.bkImage = var1.getImage(var1.getCodeBase(), var3);
   }

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

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

   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);
            }
         }
      }

      for(int var8 = 0; var8 < this.rocketCount; ++var8) {
         this.osg.setColor(this.colors[this.colorIndex[var8]]);

         for(int var9 = 0; var9 < 16; ++var9) {
            for(double var11 = this.currRadius[var8]; var11 > this.currRadius[var8] - (double)10.0F; var11 -= (double)2.0F) {
               if (var11 > (double)0.0F) {
                  this.newX = this.centerX[var8] + (int)(this.cosines[var9] * var11);
                  this.newY = this.centerY[var8] + (int)(this.sines[var9] * var11);
                  this.osg.drawLine(this.newX, this.newY, this.newX, this.newY);
               }
            }
         }
      }

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

   public void run() {
      while(true) {
         try {
            ((Component)this).repaint();
            this.UpdateRockets();
            Thread.sleep(100L);
         } catch (InterruptedException var1) {
         }
      }
   }

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

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

   public synchronized void reshape(int var1, int var2, int var3, int var4) {
      super.reshape(var1, var2, var3, var4);
      this.osImage = null;
      this.osg = null;
      this.Initialize();
   }

   public boolean imageUpdate(Image var1, int var2, int var3, int var4, int var5, int var6) {
      ((Component)this).repaint();
      return true;
   }

   void Initialize() {
      this.rocketCount = Math.max(Math.abs(this.randomizer.nextInt()) % 10, 3);
      this.radius = new double[this.rocketCount];
      this.centerX = new int[this.rocketCount];
      this.centerY = new int[this.rocketCount];
      this.currRadius = new double[this.rocketCount];
      this.colorIndex = new int[this.rocketCount];

      for(int var1 = 0; var1 < this.rocketCount; ++var1) {
         this.centerX[var1] = Math.abs(this.randomizer.nextInt()) % (((Component)this).size().width - 20);
         this.centerY[var1] = Math.abs(this.randomizer.nextInt()) % (((Component)this).size().height - 20);
         this.radius[var1] = (double)Math.max(30, Math.abs(this.randomizer.nextInt()) % 200);
         this.currRadius[var1] = (double)0.0F;
         this.colorIndex[var1] = Math.abs(this.randomizer.nextInt()) % 12;
      }

      int var2 = 0;
      this.cosines = new double[16];
      this.sines = new double[16];

      for(double var3 = (double)0.0F; var3 < (Math.PI * 2D); var3 += (Math.PI / 8D)) {
         this.cosines[var2] = Math.cos(var3);
         this.sines[var2] = Math.sin(var3);
         ++var2;
      }

   }

   void UpdateRockets() {
      for(int var1 = 0; var1 < this.rocketCount; ++var1) {
         int var10002 = this.currRadius[var1]++;
         if (this.currRadius[var1] >= this.radius[var1]) {
            this.centerX[var1] = Math.abs(this.randomizer.nextInt()) % (((Component)this).size().width - 20);
            this.centerY[var1] = Math.abs(this.randomizer.nextInt()) % (((Component)this).size().height - 20);
            this.radius[var1] = (double)Math.max(30, Math.abs(this.randomizer.nextInt()) % 100);
            this.currRadius[var1] = (double)0.0F;
            this.colorIndex[var1] = Math.abs(this.randomizer.nextInt()) % 12;
         }
      }

   }
}