package org.catacomb.be;
   
   
   
   
   public final class TimePoint {
   
       int istep;
   
      double dt;
      double time;
      double previousTime;
      double runtime;
      Timestep timestep;
  
  
  
      public TimePoint() {
          time = 0.;
          dt = 1.;
          runtime = 100.;
          timestep = new BasicTimestep(dt);
      }
  
      public TimePoint(double dt, double t0) {
          istep = 0;
          this.dt = dt;
          this.time = t0;
          this.previousTime = t0 - dt;
      }
  
  
      public void setDt(double d) {
          dt = d;
          timestep = new BasicTimestep(dt);
      }
  
      public void setRuntime(double d) {
          runtime = d;
      }
  
  
      public boolean isFinished() {
          return (time >= runtime);
      }
  
      public double getProgressFraction() {
          if (runtime <= 0) {
              runtime = 1.;
          }
          return time / runtime;
      }
  
      public String getProgressDescription() {
          Long ns = new Long(Math.round(runtime / dt));
          Integer iso = new Integer(istep > 0 ? istep-1 : 0);
          String ret = String.format("step %d of %d (t=%.4g)", iso, ns, new Double(time));
  //      return "step " + istep + " of " + ns + " t=" + time;
          return ret;
      }
  
      public double getTime() {
          return time;
      }
  
      public double getPreviousTime() {
          return previousTime;
      }
  
  
      public double getDt() {
          return dt;
      }
  
      public int getStep() {
          return istep;
      }
  
      public void increment() {
          previousTime = time;
          time += dt;
          istep += 1;
      }
  
      public Timestep getTimestep() {
          return timestep;
      }
  
  
  
  }