// ===================================================================
// $Id: $
//
// ktb.h
//      definition of classes for CKTB tree building up and traversal
//
// Class: CKTBNodeAbstract, SKTBNode, CKTBAllocMan, CKTBNodeIterator
//
// REPLACEMENT_STRING
//
// Copyright by Vlastimil Havran, 2006 - email to vhavran AT seznam.cz
// Initial coding by Vlastimil Havran, 2006

#ifndef __KTBCONF_H__
#define __KTBCONF_H__

// GOLEM headers
#include "configh.h"
#include "subdivm.h"
#ifdef __SSE__
// SSE supported
#include <xmmintrin.h>
#endif

// If we support the use of SSE instructions for ray shooting
//#define _USE_HAVRAN_SSE

namespace GtpVisibilityPreprocessor {

#ifdef __SSE__
// The second parameter is
//  
#define GPREFETCH(A, B) _mm_prefetch((const char*)A, B)
#else
#define GPREFETCH(A, B)  
#endif

#if defined(__INTEL_COMPILER)||defined(_MSC_VER)
// Intel compiler or Microsoft Compiler
#define GALIGN16 __declspec(align(16))
#endif
#ifndef __INTEL_COMPILER
#ifdef __GNUC__
// GNU compiler - somehow correct, but it crashes during
// compilation for GCC 4.1.2 !!!!!!!!!!!!!!!!!!!!!!!!!!!!
//#define GALIGN16 __attribute((aligned(16)))
#undef  GALIGN16
#define GALIGN16 
#endif
#endif
  

// forward declarations
class CObjectList;

// The statistics for construction
#define _KTB_CONSTR_STATS

// If to use 8 Bytes representation of the node
#define _KTB8Bytes

// If to use allocated boxes in minbox nodes or allocate
// them as a whole nodes, the difference is access time
// when the boxes are not needed
#define _SHORT_FORM_MINBOX

// -----------------------------------------------
// The containter at the leaves or interior node (tagged object lists)
// We use vector<CObject3D*> representation of object list
typedef CObjectList* CKTBObjectContainer;

// ==============================================
// definition of axes of spatial subdivision

class CKTBAxes
{
public:
  enum Axes {
    // The axes of a splitting plane
    EE_X_axis = 0,
    EE_Y_axis = 1,
    EE_Z_axis = 2,
    // The leaf node, full or empty
    EE_Leaf = 3,
    // The link node for DFS order representation
    EE_Link = 4,
    EE_X_axisBox = 5,
    EE_Y_axisBox = 6,
    EE_Z_axisBox = 7,
  };
  enum {
    EE_Mask = 0x7
  };
};

}

#endif //  __KTBCONF_H__