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

Java Class File | 1995-12-01 | 3.6 KB | 240 lines

import java.awt.Graphics;
import java.io.BufferedInputStream;
import java.io.InputStream;
import java.io.StreamTokenizer;
import java.util.Hashtable;

class XYZChemModel {
   float[] vert;
   Atom[] atoms;
   int[] tvert;
   int[] ZsortMap;
   int nvert;
   int maxvert;
   static Hashtable atomTable = new Hashtable();
   static Atom defaultAtom;
   boolean transformed;
   Matrix3D mat;
   float xmin;
   float xmax;
   float ymin;
   float ymax;
   float zmin;
   float zmax;

   XYZChemModel() {
      this.mat = new Matrix3D();
      this.mat.xrot((double)20.0F);
      this.mat.yrot((double)30.0F);
   }

   XYZChemModel(InputStream var1) throws Exception {
      this();
      StreamTokenizer var2 = new StreamTokenizer(new BufferedInputStream(var1, 4000));
      var2.eolIsSignificant(true);
      var2.commentChar(35);

      while(true) {
         switch (var2.nextToken()) {
            case -3:
               String var3 = var2.sval;
               double var4 = (double)0.0F;
               double var6 = (double)0.0F;
               double var8 = (double)0.0F;
               if (var2.nextToken() == -2) {
                  var4 = var2.nval;
                  if (var2.nextToken() == -2) {
                     var6 = var2.nval;
                     if (var2.nextToken() == -2) {
                        var8 = var2.nval;
                     }
                  }
               }

               this.addVert(var3, (float)var4, (float)var6, (float)var8);

               while(var2.ttype != 10 && var2.ttype != -1) {
                  var2.nextToken();
               }
            case -2:
            default:
               break;
            case -1:
               var1.close();
               if (var2.ttype != -1) {
                  throw new Exception(var2.toString());
               } else {
                  return;
               }
         }
      }
   }

   int addVert(String var1, float var2, float var3, float var4) {
      int var5 = this.nvert;
      if (var5 >= this.maxvert) {
         if (this.vert == null) {
            this.maxvert = 100;
            this.vert = new float[this.maxvert * 3];
            this.atoms = new Atom[this.maxvert];
         } else {
            this.maxvert *= 2;
            float[] var6 = new float[this.maxvert * 3];
            System.arraycopy(this.vert, 0, var6, 0, this.vert.length);
            this.vert = var6;
            Atom[] var7 = new Atom[this.maxvert];
            System.arraycopy(this.atoms, 0, var7, 0, this.atoms.length);
            this.atoms = var7;
         }
      }

      Atom var9 = (Atom)atomTable.get(var1.toLowerCase());
      if (var9 == null) {
         var9 = defaultAtom;
      }

      this.atoms[var5] = var9;
      var5 *= 3;
      this.vert[var5] = var2;
      this.vert[var5 + 1] = var3;
      this.vert[var5 + 2] = var4;
      return this.nvert++;
   }

   void transform() {
      if (!this.transformed && this.nvert > 0) {
         if (this.tvert == null || this.tvert.length < this.nvert * 3) {
            this.tvert = new int[this.nvert * 3];
         }

         this.mat.transform(this.vert, this.tvert, this.nvert);
         this.transformed = true;
      }
   }

   void paint(Graphics var1) {
      if (this.vert != null && this.nvert > 0) {
         this.transform();
         int[] var2 = this.tvert;
         int[] var3 = this.ZsortMap;
         if (var3 == null) {
            this.ZsortMap = var3 = new int[this.nvert];
            int var4 = this.nvert;

            while(true) {
               --var4;
               if (var4 < 0) {
                  break;
               }

               var3[var4] = var4 * 3;
            }
         }

         int var9 = this.nvert - 1;

         boolean var5;
         do {
            --var9;
            if (var9 < 0) {
               break;
            }

            var5 = 0;

            for(int var6 = 0; var6 <= var9; ++var6) {
               int var7 = var3[var6];
               int var8 = var3[var6 + 1];
               if (var2[var7 + 2] > var2[var8 + 2]) {
                  var3[var6 + 1] = var7;
                  var3[var6] = var8;
                  var5 = 1;
               }
            }
         } while(var5);

         var5 = this.nvert;
         if (var5 > 0 && this.nvert > 0) {
            for(int var11 = 0; var11 < var5; ++var11) {
               int var12 = var3[var11];
               int var13 = var2[var12 + 2];
               if (var13 < 0) {
                  var13 = 0;
               }

               if (var13 > 15) {
                  var13 = 15;
               }

               this.atoms[var12 / 3].paint(var1, var2[var12], var2[var12 + 1], var13);
            }

         }
      }
   }

   void findBB() {
      if (this.nvert > 0) {
         float[] var1 = this.vert;
         float var2 = var1[0];
         float var3 = var2;
         float var4 = var1[1];
         float var5 = var4;
         float var6 = var1[2];
         float var7 = var6;
         int var8 = this.nvert * 3;

         while(true) {
            var8 -= 3;
            if (var8 <= 0) {
               this.xmax = var3;
               this.xmin = var2;
               this.ymax = var5;
               this.ymin = var4;
               this.zmax = var7;
               this.zmin = var6;
               return;
            }

            float var9 = var1[var8];
            if (var9 < var2) {
               var2 = var9;
            }

            if (var9 > var3) {
               var3 = var9;
            }

            float var10 = var1[var8 + 1];
            if (var10 < var4) {
               var4 = var10;
            }

            if (var10 > var5) {
               var5 = var10;
            }

            float var11 = var1[var8 + 2];
            if (var11 < var6) {
               var6 = var11;
            }

            if (var11 > var7) {
               var7 = var11;
            }
         }
      }
   }

   static {
      atomTable.put("c", new Atom(0, 0, 0));
      atomTable.put("h", new Atom(210, 210, 210));
      atomTable.put("n", new Atom(0, 0, 255));
      atomTable.put("o", new Atom(255, 0, 0));
      atomTable.put("p", new Atom(255, 0, 255));
      atomTable.put("s", new Atom(255, 255, 0));
      atomTable.put("hn", new Atom(150, 255, 150));
      defaultAtom = new Atom(255, 100, 200);
   }
}