Java Primer Plus/Java Primer Plus (Waite Group Proess)(1996).iso/java_Win/demo/MoleculeViewer/XYZApp.class

Java Class File | 1995-12-01 | 4.2 KB | 169 lines

import java.applet.Applet;
import java.awt.Component;
import java.awt.Event;
import java.awt.Graphics;
import java.awt.Image;
import java.io.InputStream;
import java.net.URL;

public class XYZApp extends Applet implements Runnable {
   // $FF: renamed from: md XYZChemModel
   XYZChemModel field_0;
   boolean painted = true;
   float xfac;
   int prevx;
   int prevy;
   float xtheta;
   float ytheta;
   float scalefudge = 1.0F;
   Matrix3D amat = new Matrix3D();
   Matrix3D tmat = new Matrix3D();
   String mdname;
   String message;
   Image backBuffer;
   Graphics backGC;

   public void init() {
      this.mdname = ((Applet)this).getParameter("model");

      try {
         this.scalefudge = Float.valueOf(((Applet)this).getParameter("scale"));
      } catch (Exception var1) {
      }

      this.amat.yrot((double)20.0F);
      this.amat.xrot((double)20.0F);
      if (this.mdname == null) {
         this.mdname = "model.obj";
      }

      ((Applet)this).resize(((Component)this).size().width <= 20 ? 400 : ((Component)this).size().width, ((Component)this).size().height <= 20 ? 400 : ((Component)this).size().height);
   }

   public void run() {
      InputStream var1 = null;

      try {
         Thread.currentThread().setPriority(1);
         var1 = (new URL(((Applet)this).getDocumentBase(), this.mdname)).openStream();
         XYZChemModel var2 = new XYZChemModel(var1);
         Atom.setApplet(this);
         this.field_0 = var2;
         var2.findBB();
         float var3 = var2.xmax - var2.xmin;
         float var4 = var2.ymax - var2.ymin;
         float var5 = var2.zmax - var2.zmin;
         if (var4 > var3) {
            var3 = var4;
         }

         if (var5 > var3) {
            var3 = var5;
         }

         float var6 = (float)((Component)this).size().width / var3;
         float var7 = (float)((Component)this).size().height / var3;
         this.xfac = 0.7F * (var6 < var7 ? var6 : var7) * this.scalefudge;
         this.backBuffer = ((Component)this).createImage(((Component)this).size().width, ((Component)this).size().height);
         this.backGC = this.backBuffer.getGraphics();
      } catch (Exception var9) {
         ((Throwable)var9).printStackTrace();
         this.field_0 = null;
         this.message = ((Throwable)var9).toString();
      }

      try {
         if (var1 != null) {
            var1.close();
         }
      } catch (Exception var8) {
      }

      ((Component)this).repaint();
   }

   public void start() {
      if (this.field_0 == null && this.message == null) {
         (new Thread(this)).start();
      }

   }

   public void stop() {
   }

   public boolean mouseDown(Event var1, int var2, int var3) {
      this.prevx = var2;
      this.prevy = var3;
      return true;
   }

   public boolean mouseDrag(Event var1, int var2, int var3) {
      this.tmat.unit();
      float var4 = (float)(this.prevy - var3) * (360.0F / (float)((Component)this).size().width);
      float var5 = (float)(var2 - this.prevx) * (360.0F / (float)((Component)this).size().height);
      this.tmat.xrot((double)var4);
      this.tmat.yrot((double)var5);
      this.amat.mult(this.tmat);
      if (this.painted) {
         this.painted = false;
         ((Component)this).repaint();
      }

      this.prevx = var2;
      this.prevy = var3;
      return true;
   }

   public void update(Graphics var1) {
      if (this.backBuffer == null) {
         var1.clearRect(0, 0, ((Component)this).size().width, ((Component)this).size().height);
      }

      this.paint(var1);
   }

   public void paint(Graphics var1) {
      if (this.field_0 != null) {
         this.field_0.mat.unit();
         this.field_0.mat.translate(-(this.field_0.xmin + this.field_0.xmax) / 2.0F, -(this.field_0.ymin + this.field_0.ymax) / 2.0F, -(this.field_0.zmin + this.field_0.zmax) / 2.0F);
         this.field_0.mat.mult(this.amat);
         this.field_0.mat.scale(this.xfac, -this.xfac, 16.0F * this.xfac / (float)((Component)this).size().width);
         this.field_0.mat.translate((float)(((Component)this).size().width / 2), (float)(((Component)this).size().height / 2), 8.0F);
         this.field_0.transformed = false;
         if (this.backBuffer != null) {
            this.backGC.setColor(((Component)this).getBackground());
            this.backGC.fillRect(0, 0, ((Component)this).size().width, ((Component)this).size().height);
            this.field_0.paint(this.backGC);
            var1.drawImage(this.backBuffer, 0, 0, this);
         } else {
            this.field_0.paint(var1);
         }

         this.setPainted();
      } else {
         if (this.message != null) {
            var1.drawString("Error in model:", 3, 20);
            var1.drawString(this.message, 10, 40);
         }

      }
   }

   private synchronized void setPainted() {
      this.painted = true;
      this.notifyAll();
   }

   private synchronized void waitPainted() {
      while(!this.painted) {
         try {
            this.wait();
         } catch (Exception var1) {
         }
      }

      this.painted = false;
   }
}