Method mayTraverse

qcustomplot/qcustomplot.cpp:22801–22888

! \internal This function is part of the curve optimization algorithm of \ref getCurveLines. This method returns whether a segment going from \a prevRegion to \a currentRegion (see \ref getRegion) may traverse the visible region 5. This function assumes that neither \a prevRegion nor \a currentRegion is 5 itself. If this method returns false, the segment for sure doesn't pass re

  getTraverse).
*/
bool QCPCurve::mayTraverse(int prevRegion, int currentRegion) const
{
  switch (prevRegion)
  {
    case 1:
    {
      switch (currentRegion)
      {
        case 4:
        case 7:
        case 2:
        case 3: return false;
        default: return true;
      }
    }
    case 2:
    {
      switch (currentRegion)
      {
        case 1:
        case 3: return false;
        default: return true;
      }
    }
    case 3:
    {
      switch (currentRegion)
      {
        case 1:
        case 2:
        case 6:
        case 9: return false;
        default: return true;
      }
    }
    case 4:
    {
      switch (currentRegion)
      {
        case 1:
        case 7: return false;
        default: return true;
      }
    }
    case 5: return false; // should never occur
    case 6:
    {
      switch (currentRegion)
      {
        case 3:
        case 9: return false;
        default: return true;
      }
    }
    case 7:
    {
      switch (currentRegion)
      {