//============================================================================
// bvtree.cpp : Bounding-Volume tree base class implementation
//============================================================================

#include "bvtree.hpp"

int* BVtree::Objs;               // THE GLOBAL MASTER LIST OF OBJECT IDs
int BVtree::MINOBJSLIMIT=10;     // MIN # OF OBJS ALLOWED TO BE IN OBB (>=0)

#ifdef STATS_ON
  float BVtree::_TotalBVs_;      // TOTAL # OF BVs (# TIMES CONSTRUCTOR IS CALLED)
  float BVtree::_NumBVtests_;    // # OF BV OVERLAP TESTS PERFORMED
#endif

//----------------------------------------------------------------------------
// ALLOCATES GLOBAL OBJECT ID ARRAY, COPIES OBJECT LIST INTO IT, CONNECTS
// TOP-LEVEL OBB TO THE HEAD OF THE ARRAY
//----------------------------------------------------------------------------
void BVtree::CopyPtSetObjList(PtSetObjList* OL)
{
  Objs = new int[OL->NumObjs];        // ALLOCATE GLOBAL OBJECT ID ARRAY
  for (int i=0; i < OL->NumObjs; i++) // COPY ALL OF THE OBJECTS INTO GLOBAL ARRAY
    Objs[i]=OL->Objs[i];
  MyObjs = Objs;                      // "CONNECT" TOP-LEVEL OBB TO GLOBAL OBJECT ID ARRAY
  NumObjs = OL->NumObjs;              // STORE # OF OBJECTS
}

//----------------------------------------------------------------------------
// TURNS THE GLOBAL MASTER LIST OF OBJECT PTRS TO OBJECT IDs (COPIES THEM OVER)
//----------------------------------------------------------------------------
void BVtree::PtSetObjListToIDs()
{
  for (int i=0; i < NumObjs; i++)       // Objs[i] IS ACTUALLY A PTR TO AN OBJECT
    Objs[i] = ((PtSetObj*)(Objs[i]))->ID; // EXTRACT THE ID AND COPY OVER PTR
}