Extern :

- C3d aggiornamento librerie ( 118044).
2025-08-28 14:47:28 +02:00
parent daccdfc398
commit f05795ffff
53 changed files with 1756 additions and 520 deletions
@@ -378,6 +378,138 @@ public:
 }; //MbNurbsPointInfo


+//------------------------------------------------------------------------------
+/** \brief \ru Веса NURBS кривой.
+           \en Weights of a NURBS curve. \~
+  \details \ru Веса NURBS кривой.
+           \en Weights of a NURBS curve. \~
+  \ingroup Data_Structures
+*/ // ---
+class MATH_CLASS MbWeightVector {
+private:
+  size_t              m_count;        ///< \ru Количество весов контрольных точек.  \en A number of weights of the control points.
+  double              m_commonWeight; ///< \ru Общий вес контрольных точек.         \en A common weight of control points. 
+  c3d::DoubleVector   m_weights;      ///< \ru Множество весов контрольных точек.   \en Set of weights of the control points.
+public:
+  /// \ru Конструктор по умолчанию. \en Default constructor. 
+  MbWeightVector() : m_count( 0 ), m_commonWeight( UNDEFINED_DBL ), m_weights() {}
+  /// \ru Конструктор копирования. \en Copy-constructor. 
+  MbWeightVector( const MbWeightVector & wv ) : m_count( wv.m_count ), m_commonWeight( wv.m_commonWeight ), m_weights( wv.m_weights ) {}
+  ~MbWeightVector() {}
+
+  /// \ru Количество весов. \en Number of weights.
+  size_t  Count() const { return m_count; }
+  /// \ru Общий вес? \en Is it used a common weight?
+  bool    IsCommonWeight() const {
+    C3D_ASSERT( ( m_commonWeight != UNDEFINED_DBL ) == ( m_weights.size() < 1 ) );
+    return ( m_commonWeight != UNDEFINED_DBL );
+  }
+
+  /// \ru Инициализация по общему весу. \en Initialize by common weight.
+  bool  InitWeights( double wt, size_t cnt ) {
+    ClearVector();
+    m_count = cnt;
+    m_commonWeight = wt;
+    return ( m_commonWeight > -MB_MAXDOUBLE && m_commonWeight < MB_MAXDOUBLE );
+  }
+
+  /// \ru Инициализация по массиву весов. \en Initialize by weights array.
+  template<class Vector>
+  bool  InitWeights( const Vector & wts ) {
+    bool res = false;
+    m_count = wts.size();
+    m_commonWeight = UNDEFINED_DBL;
+
+    if ( CanAdjust(wts) ) {
+      m_commonWeight = wts[0];
+      ClearVector();
+      res = true;
+    }
+    else {
+      m_weights.assign( wts.begin(), wts.end() );
+      res = wts.size() > 0;
+    }
+    return res;
+  }
+
+  /// \ru  Инициализация по вектору весов. \en Initialize by weights vector.
+  bool  InitWeights( const MbWeightVector & wv ) {
+    m_count = wv.m_count;
+    m_commonWeight = wv.m_commonWeight;
+    m_weights = wv.m_weights;
+    return true;
+  }
+
+  /// \ru Получить веса. \en Get weights array.
+  template<class Vector>
+  void  GetWeights( Vector & wts, bool clear = false ) const {
+    C3D_ASSERT( (m_commonWeight != UNDEFINED_DBL) == (m_weights.size() < 1) );
+    if ( clear )
+      wts.clear();
+    if ( m_commonWeight != UNDEFINED_DBL )
+      wts.resize( m_count + wts.size(), m_commonWeight);
+    else
+      std::copy( m_weights.begin(), m_weights.end(), std::back_inserter( wts ) );
+  }
+  /// \ru Установить веса. \en Get weights array.
+  template<class Vector>
+  bool  SetWeights( const Vector & wts ) { return InitWeights( wts ); }
+
+  /// \ru Получить вес по индексу. \en Get weight by index.
+  double   GetWeight( size_t index ) const { return index < m_weights.size() ? m_weights[index] : m_commonWeight; }
+  /// \ru Получить вес по индексу. Устаревшая функция, не рекомендуется к использованию.
+  /// \en Get weight by index. Deprecated function, not recommended for use.
+  DEPRECATE_DECLARE_REPLACE( SetWeight( size_t index, double wt ) )
+  double & SetWeight( size_t index );
+  /// \ru Установить вес по индексу. \en Set weight by index.
+  bool     SetWeight( size_t index, double wt );
+  /// \ru Добавить вес. \en Add weight.
+  void     AddWeight( double wt );
+  /// \ru Вставить вес. \en Insert weight.
+  void     InsertWeight( size_t index, double wt );
+  /// \ru Удалить вес по индексу. \en Remove weight at index.
+  bool RemoveWeight( size_t index );
+  /// \ru Удалить группу весов в интервале [index1, index2). \en Remove group of weights in the [index1, index2) interval.
+  bool RemoveWeights( size_t index1, size_t index2 );
+
+  /// \ru Получить общий вес (использовать после проверки IsCommonWeight). \en Get common weight (to be used after checking IsCommonWeight).
+  double   GetCommonWeight() const { return m_commonWeight; }
+
+  /// \ru Инвертировать веса. \en Reverse weights.
+  void Reverse() { if ( m_commonWeight == UNDEFINED_DBL ) std::reverse( m_weights.begin(), m_weights.end() ); }
+  /// \ru Сбросить данные. \en Flush data.
+  void FlushData() { m_count = 0; m_commonWeight = UNDEFINED_DBL; ClearVector(); }
+
+  /// \ru Можно ли оптимизировать расход памяти? \en Is it possible to adjust memory of weights array?
+  template<class Vector>
+  bool  CanAdjust( const Vector & wts, double eps = DOUBLE_REGION ) const {
+    bool res = wts.size() > 0;
+    if ( res ) {
+      const double & w0 = wts[0];
+      for ( size_t i = 1; res && i < m_count; i++ )
+        res = ::fabs( wts[i] - w0 ) < eps;
+    }
+    return res;
+  }
+  /// \ru Оптимизировать расход памяти. \en Adjust memory of weights array.
+  bool  Adjust( double eps = DOUBLE_REGION );
+
+  /// \ru Оператор присваивания. \en Assignment operator.
+  MbWeightVector & operator = ( const MbWeightVector & wv ) { InitWeights( wv ); return *this; }
+  /// \ru Оператор присваивания. \en Assignment operator.
+  template<class Vector>
+  MbWeightVector & operator = ( const Vector & wv ) { InitWeights( wv ); return *this; }
+
+  /// \ru Сравнение. \en Comparison.
+  bool IsSame( const MbWeightVector & wv, double eps ) const;
+
+private:
+  bool FillVector();
+  void ClearVector();
+  MbWeightVector( const c3d::DoubleVector & wv ); // Запрещено.
+  MbWeightVector( const SArray<double> & wv );    // Запрещено.
+};
+
 //------------------------------------------------------------------------------
 /** \brief \ru Дать меру расстояния.
           \en Get a measure of the distance. \~