Java Primer Plus/Java Primer Plus (Waite Group Proess)(1996).iso/java_Win/demo/WireFrame/Model3D.class

Java Class File | 1995-12-06 | 4.1 KB | 315 lines

import java.awt.Color;
import java.awt.Graphics;
import java.io.IOException;
import java.io.InputStream;
import java.io.StreamTokenizer;

class Model3D {
   float[] vert;
   int[] tvert;
   int nvert;
   int maxvert;
   int[] con;
   int ncon;
   int maxcon;
   boolean transformed;
   Matrix3D mat;
   float xmin;
   float xmax;
   float ymin;
   float ymax;
   float zmin;
   float zmax;
   // $FF: renamed from: gr java.awt.Color[]
   static Color[] field_0;

   Model3D() {
      this.mat = new Matrix3D();
      this.mat.xrot((double)20.0F);
      this.mat.yrot((double)30.0F);
   }

   Model3D(InputStream var1) throws IOException, FileFormatException {
      this();
      StreamTokenizer var2 = new StreamTokenizer(var1);
      var2.eolIsSignificant(true);
      var2.commentChar(35);

      label82:
      while(true) {
         switch (var2.nextToken()) {
            case -3:
               if ("v".equals(var2.sval)) {
                  double var9 = (double)0.0F;
                  double var11 = (double)0.0F;
                  double var7 = (double)0.0F;
                  if (var2.nextToken() == -2) {
                     var9 = var2.nval;
                     if (var2.nextToken() == -2) {
                        var11 = var2.nval;
                        if (var2.nextToken() == -2) {
                           var7 = var2.nval;
                        }
                     }
                  }

                  this.addVert((float)var9, (float)var11, (float)var7);

                  while(var2.ttype != 10 && var2.ttype != -1) {
                     var2.nextToken();
                  }
               } else if (!"f".equals(var2.sval) && !"fo".equals(var2.sval) && !"l".equals(var2.sval)) {
                  while(var2.nextToken() != 10 && var2.ttype != -1) {
                  }
               } else {
                  int var3 = -1;
                  int var4 = -1;
                  int var5 = -1;

                  while(true) {
                     while(var2.nextToken() != -2) {
                        if (var2.ttype != 47) {
                           if (var3 >= 0) {
                              this.add(var3 - 1, var4 - 1);
                           }

                           if (var2.ttype != 10) {
                              break label82;
                           }
                           continue label82;
                        }

                        var2.nextToken();
                     }

                     var5 = (int)var2.nval;
                     if (var4 >= 0) {
                        this.add(var4 - 1, var5 - 1);
                     }

                     if (var3 < 0) {
                        var3 = var5;
                     }

                     var4 = var5;
                  }
               }
            case 10:
               break;
            default:
               break label82;
         }
      }

      var1.close();
      if (var2.ttype != -1) {
         throw new FileFormatException(var2.toString());
      }
   }

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

      var4 *= 3;
      this.vert[var4] = var1;
      this.vert[var4 + 1] = var2;
      this.vert[var4 + 2] = var3;
      return this.nvert++;
   }

   void add(int var1, int var2) {
      int var3 = this.ncon;
      if (var1 < this.nvert && var2 < this.nvert) {
         if (var3 >= this.maxcon) {
            if (this.con == null) {
               this.maxcon = 100;
               this.con = new int[this.maxcon];
            } else {
               this.maxcon *= 2;
               int[] var4 = new int[this.maxcon];
               System.arraycopy(this.con, 0, var4, 0, this.con.length);
               this.con = var4;
            }
         }

         if (var1 > var2) {
            int var5 = var1;
            var1 = var2;
            var2 = var5;
         }

         this.con[var3] = var1 << 16 | var2;
         this.ncon = var3 + 1;
      }
   }

   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;
      }
   }

   private void sort(int var1, int var2) {
      int[] var3 = this.con;
      int var4 = var1;
      int var5 = var2;
      if (var1 < var2) {
         int var6 = var3[(var1 + var2) / 2];

         while(var4 < var5) {
            while(var4 < var5 && var3[var4] < var6) {
               ++var4;
            }

            while(var4 < var5 && var3[var5] >= var6) {
               --var5;
            }

            if (var4 < var5) {
               int var7 = var3[var4];
               var3[var4] = var3[var5];
               var3[var5] = var7;
            }
         }

         if (var5 < var4) {
            var4 = var5;
         }

         this.sort(var1, var4);
         this.sort(var4 == var1 ? var4 + 1 : var4, var2);
      }
   }

   void compress() {
      int var1 = this.ncon;
      int[] var2 = this.con;
      this.sort(0, this.ncon - 1);
      int var3 = 0;
      int var4 = -1;

      for(int var5 = 0; var5 < var1; ++var5) {
         int var6 = var2[var5];
         if (var4 != var6) {
            var2[var3] = var6;
            ++var3;
         }

         var4 = var6;
      }

      this.ncon = var3;
   }

   void paint(Graphics var1) {
      if (this.vert != null && this.nvert > 0) {
         this.transform();
         if (field_0 == null) {
            field_0 = new Color[16];

            for(int var2 = 0; var2 < 16; ++var2) {
               int var3 = (int)((double)170.0F * ((double)1.0F - Math.pow((double)var2 / (double)15.0F, 2.3)));
               field_0[var2] = new Color(var3, var3, var3);
            }
         }

         int var11 = 0;
         int var12 = this.ncon;
         int[] var4 = this.con;
         int[] var5 = this.tvert;
         if (var12 > 0 && this.nvert > 0) {
            for(int var6 = 0; var6 < var12; ++var6) {
               int var7 = var4[var6];
               int var8 = (var7 >> 16 & '\uffff') * 3;
               int var9 = (var7 & '\uffff') * 3;
               int var10 = var5[var8 + 2] + var5[var9 + 2];
               if (var10 < 0) {
                  var10 = 0;
               }

               if (var10 > 15) {
                  var10 = 15;
               }

               if (var10 != var11) {
                  var11 = var10;
                  var1.setColor(field_0[var10]);
               }

               var1.drawLine(var5[var8], var5[var8 + 1], var5[var9], var5[var9 + 1]);
            }

         }
      }
   }

   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;
            }
         }
      }
   }
}