void PointToPointDumbbellHelper::BoundingBox()

in simulation/src/point-to-point-layout/model/point-to-point-dumbbell.cc [209:324]

• 103 lines of code
• 17 McCabe index (conditional complexity)

void PointToPointDumbbellHelper::BoundingBox (double ulx, double uly, // Upper left x/y
                                              double lrx, double lry) // Lower right x/y
{
  double xDist;
  double yDist;
  if (lrx > ulx)
    {
      xDist = lrx - ulx;
    }
  else
    {
      xDist = ulx - lrx;
    }
  if (lry > uly)
    {
      yDist = lry - uly;
    }
  else
    {
      yDist = uly - lry;
    }

  double xAdder = xDist / 3.0;
  double  thetaL = M_PI / (LeftCount () + 1.0);
  double  thetaR = M_PI / (RightCount () + 1.0);

  // Place the left router
  Ptr<Node> lr = GetLeft ();
  Ptr<ConstantPositionMobilityModel> loc = lr->GetObject<ConstantPositionMobilityModel> ();
  if (loc == 0)
    {
      loc = CreateObject<ConstantPositionMobilityModel> ();
      lr->AggregateObject (loc);
    }
  Vector lrl (ulx + xAdder, uly + yDist/2.0, 0);
  loc->SetPosition (lrl);

  // Place the right router
  Ptr<Node> rr = GetRight ();
  loc = rr->GetObject<ConstantPositionMobilityModel> ();
  if (loc == 0)
    {
      loc = CreateObject<ConstantPositionMobilityModel> ();
      rr->AggregateObject (loc);
    }
  Vector rrl (ulx + xAdder * 2, uly + yDist/2.0, 0); // Right router location
  loc->SetPosition (rrl);

  // Place the left leaf nodes
  double theta = -M_PI_2 + thetaL;
  for (uint32_t l = 0; l < LeftCount (); ++l)
    {
      // Make them in a circular pattern to make all line lengths the same
      // Special case when theta = 0, to be sure we get a straight line
      if ((LeftCount () % 2) == 1)
        { // Count is odd, see if we are in middle
          if (l == (LeftCount () / 2))
            {
              theta = 0.0;
            }
        }
      Ptr<Node> ln = GetLeft (l);
      loc = ln->GetObject<ConstantPositionMobilityModel> ();
      if (loc == 0)
        {
          loc = CreateObject<ConstantPositionMobilityModel> ();
          ln->AggregateObject (loc);
        }
      Vector lnl (lrl.x - std::cos (theta) * xAdder,
                  lrl.y + std::sin (theta) * xAdder, 0);   // Left Node Location
      // Insure did not exceed bounding box
      if (lnl.y < uly) 
        {
          lnl.y = uly; // Set to upper left y
        }
      if (lnl.y > lry) 
        {
          lnl.y = lry; // Set to lower right y
        }
      loc->SetPosition (lnl);
      theta += thetaL;
    }
  // Place the right nodes
  theta = -M_PI_2 + thetaR;
  for (uint32_t r = 0; r < RightCount (); ++r)
    {
      // Special case when theta = 0, to be sure we get a straight line
      if ((RightCount () % 2) == 1)
        { // Count is odd, see if we are in middle
          if (r == (RightCount () / 2))
            {
              theta = 0.0;
            }
        }
      Ptr<Node> rn = GetRight (r);
      loc = rn->GetObject<ConstantPositionMobilityModel> ();
      if (loc == 0)
        {
          loc = CreateObject<ConstantPositionMobilityModel> ();
          rn->AggregateObject (loc);
        }
      Vector rnl (rrl.x + std::cos (theta) * xAdder, // Right node location
                  rrl.y + std::sin (theta) * xAdder, 0);
      // Insure did not exceed bounding box
      if (rnl.y < uly) 
        {
          rnl.y = uly; // Set to upper left y
        }
      if (rnl.y > lry) 
        {
          rnl.y = lry; // Set to lower right y
        }
      loc->SetPosition (rnl);
      theta += thetaR;
    }
}