/////////////////////////////////////////////////////////////////////////////// 
// Copyright (C) 2002-2025, Open Design Alliance (the "Alliance"). 
// All rights reserved. 
// 
// This software and its documentation and related materials are owned by 
// the Alliance. The software may only be incorporated into application 
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// programs incorporating this software must include the following statement 
// with their copyright notices:
//   
//   This application incorporates Open Design Alliance software pursuant to a license 
//   agreement with Open Design Alliance.
//   Open Design Alliance Copyright (C) 2002-2025 by Open Design Alliance. 
//   All rights reserved.
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// By use of this software, its documentation or related materials, you 
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///////////////////////////////////////////////////////////////////////////////

#ifndef __TNW_TRINANGLE_INDEXES_H__
#define __TNW_TRINANGLE_INDEXES_H__

#include "NwObject.h"
#include "NwExport.h"


class OdNwVerticesData;
typedef OdSmartPtr<OdNwVerticesData> OdNwVerticesDataPtr;

/** \details
  This structure represents indices of triangle's points in array of vertices,
  normals etc.

  <group OdNw_Classes>
*/
struct NWDBEXPORT OdNwTriangleIndexes
{
  /** Index of the first point. */
  OdUInt16 pointIndex1;
  /** Index of the second point. */
  OdUInt16 pointIndex2;
  /** Index of the third point. */
  OdUInt16 pointIndex3;
  /** \details
    Comparison operator.

    \param obj [in] Structure instance to compare with this structure instance.

    \returns The true value if this structure is equal to the compared structure, or false
    otherwise.
  */
  bool operator == (const OdNwTriangleIndexes& obj) const;

  /** \details
    Constructor with parameters.

    \param index1 [in] An index of the first triange's point.
    \param index2 [in] An index of the second triange's point.
    \param index3 [in] An index of the third triange's point.
  */
  OdNwTriangleIndexes(OdUInt16 index1, OdUInt16 index2, OdUInt16 index3)
    : pointIndex1(index1)
    , pointIndex2(index2)
    , pointIndex3(index3)
  {}
};

/** \details
    This template class is a specialization of the OdArray class for OdNwTriangleIndexes objects.
*/
typedef OdArray<OdNwTriangleIndexes, OdMemoryAllocator<OdNwTriangleIndexes> > OdNwTriangleIndexesArray;

/** \details
    This class represents a pair of OdNwVerticesDataPtr and OdNwTriangleIndexesArray objects.
*/
typedef std::pair<OdNwVerticesDataPtr, OdNwTriangleIndexesArray> OdNwTriangleData;

#endif //__TNW_TRINANGLE_INDEXES_H__