PC Plus SuperCD (UK) 2000 May/PCP163A.iso/handson/files/java/stage4/HawkRay.class

Java Class File | 2000-01-30 | 4.0 KB | 174 lines

import java.applet.Applet;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.MediaTracker;
import java.awt.image.MemoryImageSource;
import java.awt.image.PixelGrabber;

public class HawkRay extends Applet implements Runnable {
   // $FF: renamed from: w int
   protected int field_0;
   // $FF: renamed from: h int
   protected int field_1;
   protected int dispx = 0;
   protected int dispz = 0;
   protected int m_sw;
   protected int m_sh;
   protected int[] texel;
   protected int m_cos1;
   protected int m_sin1;
   protected int xres;
   protected int yres;
   protected int m_alti = 120;
   // $FF: renamed from: d int
   protected int field_2 = 1;
   protected int viewA = 180;
   protected int dViewA = 3;
   protected int[] screenPixel;
   protected MemoryImageSource screenMem;
   protected Image screenImage;
   private int garbageCnt = 0;
   private Thread theThread;
   private boolean m_tAnimate = true;

   // $FF: synthetic method
   static boolean access$0(HawkRay var0) {
      return var0.m_tAnimate;
   }

   // $FF: synthetic method
   static void access$1(HawkRay var0, boolean var1) {
      var0.m_tAnimate = var1;
   }

   public void init() {
      ((Component)this).addMouseListener(new HawkRay$1(this));
      MediaTracker var1 = new MediaTracker(this);
      Image var2 = ((Applet)this).getImage(((Applet)this).getDocumentBase(), ((Applet)this).getParameter("image"));
      this.m_sh = ((Component)this).getSize().height << 2;
      this.m_sw = ((Component)this).getSize().width;
      this.screenPixel = new int[this.m_sw * this.m_sh >> 2];
      this.screenMem = new MemoryImageSource(this.m_sw, this.m_sh >> 2, this.screenPixel, 0, this.m_sw);
      var1.addImage(var2, 0);

      try {
         var1.waitForID(0);
      } catch (Exception var5) {
      }

      this.field_0 = var2.getWidth(this);
      this.field_1 = var2.getHeight(this);
      this.texel = new int[this.field_0 * this.field_1];
      PixelGrabber var3 = new PixelGrabber(var2.getSource(), 0, 0, this.field_0, this.field_1, this.texel, 0, this.field_0);

      try {
         var3.grabPixels();
      } catch (Exception var4) {
         return;
      }

      Object var6 = null;
   }

   public void paint(Graphics var1) {
      if (this.screenImage != null) {
         var1.drawImage(this.screenImage, 0, 0, this);
      }

   }

   protected void renderImage() {
      int var7 = 0;
      int var10 = this.field_0;
      int var11 = this.field_1;
      int var12 = this.m_sw - 1;
      int var13 = this.m_sw;
      int var14 = this.dispx;
      int var15 = this.dispz;
      int var16 = (3 * this.m_sh >> 2) + 1;
      int var17 = this.m_sh;
      double var18 = (double)this.m_sh;
      int var20 = this.field_0 << 10;
      int var21 = this.field_1 << 10;
      int var22 = (int)((double)240.0F - (double)120.0F * Math.sin((double)this.viewA * 0.0174432925));
      int var23 = (int)((double)1024.0F * Math.sin((double)this.viewA * 0.0174432925));
      int var24 = (int)((double)1024.0F * Math.cos((double)this.viewA * 0.0174432925));
      this.dispz += var24 << 3;
      this.dispx += var23 << 3;

      for(int var25 = var16; var25 <= var17; ++var25) {
         double var28 = (double)(var25 << 1) / var18 - (double)1.0F;
         double var30 = ((double)var22 - var28) / var28;
         double var32 = -(var30 + (double)1.0F) / (double)2.0F;
         int var1 = (int)((double)var24 * var32 + (double)var23 * var30) + var14;
         int var2 = (int)((double)(-var23) * var32 + (double)var24 * var30) + var15;
         int var3 = (int)((double)(-var24) * var32 + (double)var23 * var30) + var14;
         int var4 = (int)((double)var23 * var32 + (double)var24 * var30) + var15;
         int var8 = (var3 - var1) / var12;
         int var9 = (var4 - var2) / var12;
         var8 = (var8 % var20 + var20) % var20;
         var9 = (var9 % var21 + var21) % var21;

         for(int var34 = 0; var34 < var13; ++var34) {
            int var5 = (var10 - var1 >> 10) % var10;
            if (var5 < 0) {
               var5 += var10;
            }

            int var6 = (var2 >> 10) % var11;
            if (var6 < 0) {
               var6 += var11;
            }

            this.screenPixel[var7++] = this.texel[var6 * var10 + var5];
            var1 += var8;
            var2 += var9;
         }
      }

      this.screenImage = ((Component)this).createImage(this.screenMem);
   }

   public void run() {
      Graphics var1 = ((Component)this).getGraphics();
      Timer.sampleStart();

      for(; this.theThread != null && this.m_tAnimate; Timer.stop()) {
         Timer.start();
         if (this.viewA > 720) {
            this.dViewA = -1;
         } else if (this.viewA < 360) {
            this.dViewA = 1;
         }

         this.viewA += this.dViewA;
         this.renderImage();
         Thread.yield();
         this.paint(var1);
         if (this.garbageCnt++ > 120) {
            System.gc();
            this.garbageCnt = 0;
         }
      }

      Timer.sampleEnd();
      Timer.report();
   }

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

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

   }

   public void update(Graphics var1) {
      this.paint(var1);
   }
}