Internet Magazine 2000 June/Internet Magazine June 2000.iso/pc/software/windows/building/wirefusion/html/ex4/bob51.class

Java Class File | 2000-01-07 | 2.4 KB | 147 lines

import java.awt.Event;
import java.io.DataInputStream;

public class bob51 extends bob {
   private int nrOfCurves;
   private double totalLength;
   private int[][] controlPointsX;
   private int[][] controlPointsY;
   private int lastX;
   private int lastY;
   private int newX;
   private int newY;
   private double resultX;
   private double resultY;
   private double[] pointsX;
   private double[] pointsY;
   private double[] lengths;
   private int nrOfPoints;

   private void calcLocation(double var1) {
      double var3 = var1 * this.totalLength;
      double var5 = (double)0.0F;

      int var7;
      for(var7 = 0; var5 + this.lengths[var7] < var3; ++var7) {
         var5 += this.lengths[var7];
      }

      double var8 = var3 - var5;
      double var10 = var8 / this.lengths[var7];
      double var12 = this.pointsX[var7];
      double var14 = this.pointsY[var7];
      double var16 = this.pointsX[var7 + 1];
      double var18 = this.pointsY[var7 + 1];
      this.lastX = this.newX;
      this.lastY = this.newY;
      this.newX = (int)(var12 + (var16 - var12) * var10);
      this.newY = (int)(var14 + (var18 - var14) * var10);
   }

   // $FF: renamed from: rd (java.io.DataInputStream) void
   public void method_0(DataInputStream var1) {
      try {
         this.nrOfCurves = var1.readInt();
         this.controlPointsX = new int[this.nrOfCurves][4];
         this.controlPointsY = new int[this.nrOfCurves][4];

         for(int var2 = 0; var2 < this.nrOfCurves; ++var2) {
            this.controlPointsX[var2][0] = var2 == 0 ? var1.readInt() : this.controlPointsX[var2 - 1][3];
            this.controlPointsY[var2][0] = var2 == 0 ? var1.readInt() : this.controlPointsY[var2 - 1][3];
            this.controlPointsX[var2][1] = var1.readInt();
            this.controlPointsY[var2][1] = var1.readInt();
            this.controlPointsX[var2][2] = var1.readInt();
            this.controlPointsY[var2][2] = var1.readInt();
            this.controlPointsX[var2][3] = var1.readInt();
            this.controlPointsY[var2][3] = var1.readInt();
         }

         this.newX = this.controlPointsX[0][1];
         this.newY = this.controlPointsY[0][1];
      } catch (Exception var3) {
      }

   }

   private void expandArray(double[] var1) {
      double[] var2 = new double[var1.length * 2];
      System.arraycopy(var1, 0, var2, 0, var1.length);
   }

   private void addPoint(double var1, double var3) {
      if (this.pointsX.length < this.nrOfPoints) {
         this.expandArray(this.pointsX);
         this.expandArray(this.pointsY);
         this.expandArray(this.lengths);
      }

      this.pointsX[this.nrOfPoints] = var1;
      this.pointsY[this.nrOfPoints] = var3;
      if (this.nrOfPoints > 0) {
         double var5 = var1 - this.pointsX[this.nrOfPoints - 1];
         double var7 = var3 - this.pointsY[this.nrOfPoints - 1];
         this.totalLength += this.lengths[this.nrOfPoints - 1] = Math.sqrt(var5 * var5 + var7 * var7);
      }

      ++this.nrOfPoints;
   }

   // $FF: renamed from: i () void
   public void method_1() {
      this.pointsX = new double[1000];
      this.pointsY = new double[1000];
      this.lengths = new double[1000];
      this.nrOfPoints = 0;

      for(int var1 = 0; var1 < this.nrOfCurves; ++var1) {
         double var2 = (double)0.0F;
         this.calcPosition(var1, (double)0.0F);

         for(int var12 = 1; var12 < 5; ++var12) {
            double var8 = this.resultX;
            double var10 = this.resultY;
            this.calcPosition(var1, (double)var12 / (double)4.0F);
            double var4 = var8 - this.resultX;
            double var6 = var10 - this.resultY;
            var2 += Math.sqrt(var4 * var4 + var6 * var6);
         }

         int var13 = (int)(var2 / (double)10) + 2;

         for(int var14 = 0; var14 < var13; ++var14) {
            this.calcPosition(var1, (double)var14 / (double)var13);
            this.addPoint(this.resultX, this.resultY);
         }
      }

      this.addPoint((double)this.controlPointsX[this.nrOfCurves - 1][3], (double)this.controlPointsY[this.nrOfCurves - 1][3]);
   }

   private void calcPosition(int var1, double var2) {
      double var4 = (double)this.controlPointsX[var1][0];
      double var6 = (double)this.controlPointsX[var1][1];
      double var8 = (double)this.controlPointsX[var1][2];
      double var10 = (double)this.controlPointsX[var1][3];
      double var12 = (double)this.controlPointsY[var1][0];
      double var14 = (double)this.controlPointsY[var1][1];
      double var16 = (double)this.controlPointsY[var1][2];
      double var18 = (double)this.controlPointsY[var1][3];
      double var20 = (double)1 - var2;
      this.resultX = var4 * var20 * var20 * var20 + var6 * (double)3 * var2 * var20 * var20 + var8 * (double)3 * var2 * var2 * var20 + var10 * var2 * var2 * var2;
      this.resultY = var12 * var20 * var20 * var20 + var14 * (double)3 * var2 * var20 * var20 + var16 * (double)3 * var2 * var2 * var20 + var18 * var2 * var2 * var2;
   }

   // $FF: renamed from: he (java.awt.Event) void
   public void method_2(Event var1) {
      if (var1.id == 1) {
         if (this.nrOfCurves > 0) {
            this.calcLocation(((bob10)var1.arg).value / (double)100.0F);
         }

         ((bob)this).ce(new bob13((double)this.newX, (double)this.newY), 1);
         ((bob)this).ce(new bob13((double)(this.newX - this.lastX), (double)(this.newY - this.lastY)), 2);
      }

   }
}