PrintPretty

// =======================================================================
// function : PrintPretty
// purpose  :
// =======================================================================
void RayTraceGPU_Node::PrintPretty (std::string thePrefix, bool isLeft, int theLevel) const
{
  if (IsLeaf())
  {
    thePrefix.erase(thePrefix.size() - 2, 2);
    thePrefix += isLeft ? "|-" : "\xC0-";

    std::cout << thePrefix;

    const RayTraceGPU_PrimitiveNode* aNode =
      static_cast<const RayTraceGPU_PrimitiveNode*> (this);

    char buf[32];
    _itoa((int)aNode, buf, 16);

    std::cout << (aNode->IsComplement() ? "!" : " ") << aNode->TypeID() << std::endl;
  }
  else
  {
    const RayTraceGPU_OperationNode* aNode =
      static_cast<const RayTraceGPU_OperationNode*> (this);

    thePrefix.erase(thePrefix.size() - 2, 2);
    thePrefix += isLeft ? "|-" : "\xC0-";

    std::cout 
      << thePrefix
      << (aNode->Operation() == RT_OP_INTER ? (aNode->IsComplement() ? " ~." : " . ") : (aNode->Operation() == RT_OP_UNION ? (aNode->IsComplement() ? " ~+" : " + ") : (aNode->IsComplement() ? " ~-" : " - ")))
      << "(" << aNode->Height() << ")"
      << std::endl;

    thePrefix.erase(thePrefix.size() - 2, 2);

    if (!isLeft)
    {
      thePrefix += "  ";
    }
    else
    {
      thePrefix += "| ";
    }

    thePrefix += " | ";

    {
      aNode->Child<0>()->PrintPretty (thePrefix, true, theLevel + 1);
      aNode->Child<1>()->PrintPretty (thePrefix, false, theLevel + 1);
    }
  }  
}